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service laser printer ml-1700 series ML-1510 ml-1710 ml-1750 manual laser printer contents 1. precautions 2. reference information 3. specifications 4. summary of product 5. disassembly and reassembly 6. alignment and adjustments 7. troubleshooting 8. exploded views and parts list 9. block diagram 10. connection diagram 11. schematic diagram
1 1 1-1 samsung electronics precautions training manual 1. precautions the cautions in the below are items needed to keep in mind when maintaining and servicing. please read carefully and keep the contents in mind to prevent accidents while servicing and to prevent that the machine gets damage. 1.1 warning for safety. (1) request the service by qualified service person. the service for this machine must be performed by a service person who took the additional education of this field. it is dangerous if unqualified service person or user tries to fix the machine. (2) do not rebuild it discretionary. do not attach or change pats discretionary. do not dissemble, fix, and rebuilt it. if do, printer will abnormally work and electric shock or a fire can be occurred. (3) laser safety statement the printer is certified in the u.s. to conform to the requirements of dhhs 21 cfr, chapter 1 subchapter j for class 1(1) laser products, and elsewhere, is certified as a class i laser product conforming to the requirements of iec 825. class i laser products are not considered to be hazardous. the laser system and printer are designed so there is never any human access to laser radiation above a class i level during normal operation, user maintenance, or prescribed service condition. warning >> never operate or service the printer with the protective cover removed from laser/scanner assembly. the reflected beam, although invisible, can damage your eyes. when using this product, these basic safety precautions should always be followed to reduce risk of fire, electric shock, and injury to persons. caution - invisible laser radiation when this cover open. do not open this cover. vorsicht - unsichtbare laserstrahlung, wenn abdeckung ge ffnet. nicht dem strahl aussetzen. attention - rayonnement laser invisible en cas d ouverture. exposition dangereuse au faisceau. attenzione - radiazione laser invisibile in caso di apertura. evitare l esposizione al fascio. precaucion - radiacion laser ivisible cuando se abre. evitar exponerse al rayo. advarsel. - usynlig laserstr lning ved bning, n r sikkerhedsbrydere er ude af funktion. undg udsaettelse for str lning. advarsel. - usynlig laserstr lning n r deksel pnes. stirr ikke inn i str len. unng eksponering for str len. varning - osynlig laserstr lning n r denna del r ppnad och sp rren r urkopplad. betrakta ej str len. str len r farlig. varo! - avatt aessa ja suojalukitus ohitettaessa olet alttiina n kym tt m lle laser- s teilylle l katso s teeseen.
1-2 precautions samsung electronics training manual 1.2 caution for safety 1.2.1 precaution related noxious material the toner in a printer cartridge contains a chemical material, which might harm human body if it is swal- lowed. please keep children out of the toner cartridge. 1.2.2 precaution related electric shock or fire it is possible to get electric shock or burn by fire if you don't fallow the instructions of the manual. (1) use exact voltage. please do use an exact voltage and wall socket. if not, a fire or an electric leakage can be caused. (2) use authorized power code. do use the power code supplied with printer. a fire can be occurred when over current flows in the power code. (3) do not insert many codes in an outlet. if do, a fire can be occurred due to flow over current in an outlet. (4) do not put water or extraneous matter in the printer. please do not put water, other liquid, pin, clip, etc. it can cause a fire, electric shock, or malfunction. if it is happened, turn off the power and remove the power plug from outlet immediately. (5) do not touch the power plug with wet hand. when servicing, do remove the power plug from outlet. and do not insert or take off it with wet hand. electric shock can be occurred. (6) caution when inserting or taking off the power plug. the power plug has to be inserted completely. if not, a fire can be caused due to poor contact. when taking off the power plug, do grip the plug and take it off. if grip the line and pull over, it could be damaged. a fire or electric shock could cause. (7) management of power code. do not bend, twist, or bind it and place other materials on it. also, do not fix it with staples. if the power code gets damage, a fire or electric shock can be caused. a damaged power code must be replaced immediately. do not repair the damaged part and reuse it. a repaired part with plastic tape can be occurred a fire or electric shock. do not spread chemicals on the power code. do not spread insecticide on the power code. a fire or electric shock can be occurred due to thinner(weak) cover of the power code. (8) check whether the power outlet and the power plug are damaged, pressed, chopped, or blazing fire or not. when such inferiorities are found, repair it immediately. do not make it pressed or chopped when moving the machine. (9) caution when thundering, and being flash of lightening. it causes a fire or electric shock. take the power plug off when thundering. do not touch cable and device when thundering and being flash of lightening. (10) do avoid the place where is moisture or has dust. do not install the printer in where have lots of dust or around humidifier. a fire can be occurred. a plug part need to clean well with dried fabric to remove dust. if water drops are dripped on the place covered with dust, a fire can be occurred. (11) avoid direct sunlight. do not install the printer near to window where directly contacts to the sunlight. if the machine contacts sunlight long time, the machine cannot work properly because inner temperature of the machine is getting higher. a fire can be caused. (12) turn off the power and take off the plug when a smoke, strange smell, or sound from the machine. if you keep using it, a fire can be occurred. (13) do not insert steel or metal piece inside/outside of the machine. do not put steel or metal piece into a ventilator. an electric shock could be happened.
1-3 samsung electronics precautions training manual 1.2.3 precaution related handling the machine. if you ignore this information, you could get harm and machine could be damaged. (1) do not install it on the different levels, or slanted floor. please confirm whether it is balanced or not after installation. if it is unbalanced, an accident can be happened due to the machine fell over. (2) be careful not to insert a finger or hair in the rotating unit. be careful not to insert a finger of hair in the rotating unit (motor, fan, paper feeding part, etc) while the machine is operating. once it happens, you could harm. (3) do not place a pot contains water/chemical or small metals. if those are got into the inner side of machine, a fire or electric shock can be occurred. (4) do not install it in where lots of moisture or dust exists or where raindrop reaches. a fire or electric shock can be caused. (5) do not place a candlelight, burning cigarette, and etc. on the machine. do not install it near to heater. a fire can be occurred. 1.2.4 precaution when assembly/disassembly when replace parts, do it very carefully. do memorize the location of each cable before replace parts for reconnecting it afterwards. do memorize. please perform the below before replace or disassembly the parts. (1) check the contents stored in the memory. all the information will be erased after replace main board. the information needed to keep has to be written down. (2) before servicing or replacing electric parts, take off a plug. (3) take off printer cables and power code connected to printer. (4) do use formal parts and same standardized goods when replacing parts.must check the product name, part code, rated voltage, rated current, operating temperature, etc. (5) do not give an over-force when release or tighten up the plastic parts. (6) be careful not to drop the small parts such as screws in the printer. (7) be careful not to change the location of small parts such as screws when assembling and disassem- bling. (8) do remove dust or foreign matters completely to prevent fire of tracking, short, or etc. (9) after finished repair, check the assembling state whether it is same as before the repair or not.
1-4 precautions samsung electronics training manual 1.3 esd precautions certain semiconductor devices can be easily damaged by static electricity. such components are common- ly called ?lectrostatically sensitive (es) devices? or esds. examples of typical esds are: integrated cir- cuits, some field effect transistors, and semiconductor ?hip?components. the techniques outlined below should be followed to help reduce the incidence of component damage caused by static electricity. caution >>be sure no power is applied to the chassis or circuit, and observe all other safety precautions. 1. immediately before handling a semiconductor component or semiconductor-equipped assembly, drain off any electrostatic charge on your body by touching a known earth ground. alternatively, employ a com- mercially available wrist strap device, which should be removed for your personal safety reasons prior to applying power to the unit under test. 2. after removing an electrical assembly equipped with esds, place the assembly on a conductive surface, such as aluminum or copper foil, or conductive foam, to prevent electrostatic charge buildup in the vicini- ty of the assembly. 3. use only a grounded tip soldering iron to solder or desolder esds. 4. use only an ?nti-static?solder removal device. some solder removal devices not classified as ?nti-stat- ic?can generate electrical charges sufficient to damage esds. 5. do not use freon-propelled chemicals. when sprayed, these can generate electrical charges sufficient to damage esds. 6. do not remove a replacement esd from its protective packaging until immediately before installing it. most replacement esds are packaged with all leads shorted together by conductive foam, aluminum foil, or a comparable conductive material. 7. immediately before removing the protective shorting material from the leads of a replacement esd, touch the protective material to the chassis or circuit assembly into which the device will be installed. 8. maintain continuous electrical contact between the esd and the assembly into which it will be installed, until completely plugged or soldered into the circuit. 9. minimize bodily motions when handling unpackaged replacement esds. normal motions, such as the brushing together of clothing fabric and lifting ones foot from a carpeted floor, can generate static elec- tricity sufficient to damage an esd.
2 2 2-1 samsung electronics reference information training manual 2. reference information this chapter describes the reference information for applying this training manual, and it is consist- ed of the tool list, the abbreviation table, the outline of model, and so on. 2.1 tool for troubleshooting the following tools are recommended for safe and smooth troubleshooting described in this service manual. dcu(diagnostic control unit) standard : test equipment to diagnose the laser printer supplied by samsung electronics. 1 driver standard : "-" type, "+" type (m3 long, m3 short, m2 long, m2 short). 4 cotton swab standard : for general home use, for medical ser-vice 6 software(driver) installation cd rom 8 cleaning equipments a ipa(isopropyl alcohol)dry cloth or a soft stuff neutral detergent 7 pinset standard : for general home use, small type. 5 dvm(digital volt meter) standard : indicates more than 3 digits. 2 electronic scale standard : equipment to check the weight of con- sumables(toner cartridge) supplied by samsung electronics. (the gram unit can be measured.) 3 mind your hands not to be touched when you disassemble and reassemble pba ass'y, such as the main board, smps, hvps.
2-2 reference information samsung electronics training manual 2.2 acronyms and abbreviations the table in the below explains abbreviations used in this service manual. the contents of this service manual are declared with abbreviations in many parts. please refer to the table. ac alternating current asic application specific integrated circuit assy assembly bios basic input output system cmos complementary metal oxide semiconductor cn connector con connector cpu central processing unit db decibel dba decibelampere dbm decibel milliwatt dc direct current dcu diagnostic control unit dpi dot per inch dram dynamic random access memory dvm digital voltmeter ecp enhanced capability port eeprom electronically erasable programmable read only memory emi electro magnetic interference ep electrophotographic epp enhanced parallel port f/w firmware gdi graphics device interface gnd ground hbp host based printing hdd hard disk drive hv high voltage hvps high voltage power supply i/f interface i/o input and output ic integrated circuit ide intelligent drive electronics or imbedded drive electronics ieee institute of electrical and electronics engineers. inc ipa isopropy alcohol ipm images per minute lan local area network lb pound(s) lbp laser beam printer lcd liquid crystal display led light emitting diode lsu laser scanning unit mb megabyte mhz megahertz nvram nonvolatile random access memory opc organic photo conductor pba printed board assembly pcl printer command language , printer control language pdl page description language ppm page per minute ptl per-transfer lamp qty quantity ram random access memory rom read only memory scf second cassette feeder smps switching mode power supply spgp samsung printer graphic processor spl samsung printer language spool simultaneous peripheral operation online sw switch sync synchronous or synchronization usb universal serial bus
3 3 3-1 samsung electronics specifications training manual 3. specifications 3.1 general specifications item description print technology non-impact electro-photograpic printing developing system non-magnetic, mono-component developing system print speed (1) 16 ppm : a4 size , 5% character pattern (ML-1510 : 14ppm) 17 ppm : letter size , 5% character pattern (ML-1510 : 15ppm) resolution ml-1710 / ML-1510 : true 600 x 600 dpi ml-1750 : 1200 x 600 dpi source of light laser diode (lsu : laser scanner unit) warm-up time power-on boot : 30 seconds or less first print out time less than 11 seconds (ready to 1st page out) media size 75 x 125 (3?x 5? mm to 216 x 356 (8.5?x 14?mm media thickness 16 ~ 24 lb dimension(w x d x h) 348 x 355 x 193mm / 13.7 x 14 x 7.6 inch weight net : 7 kg /15.4 lb gross : 9.5 kg (max.) acoustic noise (1) stand by : less than 35 db printing: less than 50 db power save mode available toner save mode available machine life 120,000 sheets periodic replacing parts (2) pick up roller : 60,000 sheets feed roller : 60,000 sheets transfer roller: 60,000 sheets fuser assembly : 60,000 sheets (1) for measuring the printing speed, count the papers which outputted within one minute from when the second page starts to be printed. (a4, 5% character pattern standard) (2) the life span of the consumption parts can be checked by printing the demo page or the system list. (refer to the 6.3 receive the service information)
3-2 specifications samsung electronics training manual 3.3 electrical specification 3.2 controller specification item description ml-1710 /ML-1510 ml-1750 processor(cpu) samsung jupiter4 90mhz samsung spgpm 166mhz os compatibility (1) win 98x/nt4.0/me/2000/xp, various linux os,mac(mac os 8.6 ) memory flash rom(program) : 0.5mb flash flash rom(program) : 0.5mb flash ram : 8mb eeprom(nvram) : 512byte emulation spl(samsung printer language) pcl6, ibmproprinter, epson interface usb 1.1 usb - usb 2.0 - 12 mbps 1 port parallel : ieee 1284 - modes supported : compatible,nibble,byte,ecp external network adaptor(optional) interface switching automatic interface time-out 5min(max.) font windows font 45 scalable, 1 bitmap item description input voltage nominal input voltage 200-240 vac / 100~127vac input voltage range 189-264 vac/ 90~132vac nominal frequency 50/60 hz frequency tolerance +3hz power consumption printing : 280w avg or less power save : 10w avg or less 3-4 environmental range item operating storage temperature 10~32 o c(50-90 of) -20~40 o c (-4~104 of) humidity 20~80%rh 10~80%rh (1) the spl series model is usb exclusive use, so it supports the environment beyond the win 98.
3-3 samsung electronics specifications training manual ?input capacity cassette: 250 sheets manual : 1 sheet ?output capacity face down : 50 sheets(20lb) face up : 1 sheet(ohp, lavbel, cut sheet, envelope) 2-paper handling specifications please refer to " paper specifications " on user guide ?input paper size 3.5 toner cartridge (developer) item description remark life span starter: 1,000 sheets ( 3,000 sheets for china) idc 5% pattern running : 3,000 sheets developing non-magnetic mono conponent contact developing charging conductive roller charging toner checking sensor not available ozone 0.1ppm or less 8 hours style single cartridge paper dimensions weight a4 210 x 297 mm 60 to 90 g/m 2 bond(16 to 24 lb) letter 216 x 279(8.5 x 11") legal(legal14") 216 x 356(8.5 x14") jis b5 182 x257mm (7.2 x 10") folio(legal13") 216 x 330mm (8.5 x 13") minimum size (custom) 76 x 127mm (3 x 5") 60 to 163 g/m 2 bond(16 to 43 lb) maximum size (custom) 216 x 356mm (8.5 x 14") transparency(ohp) same minimum and maximum thickness: label paper sizes as listed above 0.10 x 0.14 mm (0.0039 x 0.0055") envelopes up to 90 g/m 2 bond(16 to 24 lb)
3-4 specifications samsung electronics training manual
4 4 4-1 samsung electronics summary of pr oduct training manual 4. summary of product this chapter describes the functions and operating principal of the main component. 4.1 printer components 4.1.1 front view output support top output tray (face down) control panel power switch paper level indicator tray manual feeder manual feeder guide front cover
4-2 summary of pr oduct samsung electronics training manual 4.1.2 rear view rear output tray (face up) power receptacle parallel port usb port 4.1.3 inside view toner cartridge front cover
led description 4-3 samsung electronics summary of pr oduct training manual 4.1.4 control panel 1) on line/error and toner save leds if the on line/error lights green, the printer is ready to print. if the on line/error lights red, the printer is experiencing an error, such as jammed paper, the open cover or the empty toner cartridge. if you press the cancel button while the printer is receiving data, the on line/error led blinks red to cancel printing. in manual feed mode, if there is no paper in the manual feeder, the on line/error led blinks red. load paper into the manual feeder and the led stops blinking. if the printer is receiving data, the on line/error led slowly blinks green. if the printer is printing the received data, the on line/error led blinks green fast. if you press the cancel button in ready mode, this led is on and the toner save mode is enabled. if you press this button once again, this led is off and the toner save mode is disabled. if the on line/error and toner save leds blink, your system has some problems. to solve the problem.
4-4 summary of pr oduct samsung electronics training manual 2) cancel button printing demo page in ready mode, press and hold this button for about 2 seconds until all leds blink slowly, and release. printing configuration sheet in ready mode, press and hold this button for about 6 seconds until all leds blink fast, and release. manual feeding press this button each time you load a sheet of paper in the manual feeder, when you select manual feed for source from your software application. cleaning inside printer in ready mode, press and hold this button for about 10 seconds until all leds turn on, and release. after cleaning the printer, one cleaning sheet prints. canceling print job press this button during printing. the on line/error led blinks while the print job is cleared from both the printer and the computer, and then return to ready mode. this may take some time depending on the size of the print job. in manual feed mode, you can? cancel the print job by pressing this button. toner save mode on/off in ready mode, press this button to turn the toner save mode on or off.
4-5 samsung electronics summary of pr oduct training manual 4.2 system layout ptl p i c k / r pr cr dr sr tr fr opc l s u fuser toner cartridge 1 1 2 2 3 6 3 4 cassette manual feeder transfer roller ptl(per-tramsfer-lamp) 5 7 6 7 5 fuser lsu(laser scan unit) toner cartridge 4 mp sensor
4-6 summary of pr oduct samsung electronics training manual 4.2.1 feeding part there are the universal cassette, which loads papers, and the manual feeder, which supplies paper one by one. the cassette has the function pad which separates paper one by one, and it has the sensor function to check the existence of the loading paper. - feeding method: universal cassette type - feeding standard: center loading - feeding capacity: cassette-250 sheets (75g/m?, 20lb paper standard) manual 1 sheet (paper, ohp, envelop, etc.) - paper detecting sensor: photo sensor - paper size sensor: none 4.2.2 transfer ass? it is consisted of the ptl (pre-transfer lamp) and the transfer roller. the ptl sends a light to the opc drum, makes the current on the drum surface to low, and improves the transfer efficiency. the transfer roller delivers the toner of the opc drum to the paper. - the life span: print over 60,000 sheets (in 15~30?) 4.2.3 driver ass? it is a power delivery unit by gearing. by driving the motor, it supplies the power to the feeding unit, the fusing unit, and the distributing unit. 4.2.4 fixing part(fuser) - the fuser is consisted of the heat lamp, heat roller, pressure roller, thermistor, and thermostat. it adheres the toner to the paper with a pressure and a heat to complete the printing job. - there are two methods, the existing method which use the heat lamp and the q-pid which is developed by samsung. 110v : heat lamp type fuser 120v : q-pid type fuser 4.2.4.1 temperature-intercepting device (thermostat) the thermostat is the temperature-intercepting device, which cuts off the power for preventing an overheat- ing or a fire when the heat lamp or the heat coil of the heat roller is overheated. 4.2.4.2 temperature detecting sensor (thermistor) the thermistor detects the surface temperature of the heat roller, and it maintains the regular temperature of the heat roller by responding to the information of the temperature. 4.2.4.3 heat roller the heat roller transfers the temperature from the heat lamp or heat coil to the surface to heat the paper which passes the surface. the melted toner cannot stain the heat roller coated with teflon. the heating elements are heat lamp and heat coil. for this product, q-pid method with the heat coil is applied. 4.2.4.4 pressure roller the pressure roller mounted right under the heat roller is made of the silicon resin, and the surface of the roller is coated with teflon to fuse the toner on the paper when paper passes between the heat roller and the pressure roller.
4-7 samsung electronics summary of pr oduct training manual 4.2.4.5 safety relevant facts ?protecting device when overheating - 1st protecting device: h/w cuts off when detecting an overheating - 2nd protecting device: s/w cuts off when detecting an overheating - 3rd protecting device: thermostat cuts off the power ?safety device - the power of the fuser is cut off when the front cover is open. - the overheating safety device for customer - maintains the surface temperature of the fuser cover under 80? and attach the caution label inside of the rear cover where customer can find easily. 4.2.5 lsu (laser scanner unit) the lsu unit is controlled by the video controller. it scans the video data received from video controller with laser beam by using the rotation principal of the polygon mirror to create the latent image on the opc drum. it is the core part of lbp. the opc drum rotates as the same speed as the paper feeding speed. it creates the /hs ync signal and sends it to the engine when the laser bean of the lsu reaches the end of the polygon mirror, and the engine detects the /hs ync signal to arrange the vertical line of the image on the paper. after detecting the /hs ync signal, the image data is sent to the lsu to arrange the its left margin on the paper. the one side of the polygon mirror is one line for scanning.
4-8 summary of pr oduct samsung electronics training manual 4.2.6 toner cartridge by using the electronic photo process, it creates a visual image. in the toner cartridge, the opc unit and the developer unit are in a body. the opc unit has opc drum and charging roller, and the developer unit has toner, toner cartridge, supply roller, developing roller, and blade (doctor blade) - developing method: non magnetic 1 element contacting method - toner: non magnetic 1 element shatter type toner - the life span of toner: 3,000 sheets (idc pattern/a4 standard) - toner remaining amount detecting sensor: none - opc cleaning: collect the toner by using electric static + film opc - management of disusable toner: collect the toner by using electric static (clenerless type- no disusable toner) - opc drum protecting shutter: none - classifying device for toner cartridge: id is classified by interruption of the frame channel.
4-9 samsung electronics summary of pr oduct training manual 4.3 main pba(spl model) the engine board and the controller board are in one united board, and it is consisted of cpu part and print part in functional aspect. the cpu is functioned as the bus control, i/o handling, drivers, and pc inter- face. the main board sends the current image dlml video data to the lsu and manages the conduct of electrophotography for printing. it is consisted of the circuits of the motor (paper feed, pass) driving, clutch driving, pre-transfer lamp driving, current driving, and fan driving. the signals from the paper feed jam sensor and paper empty sensor are directly inputted to the main board.
4-10 summary of pr oduct samsung electronics training manual 4.3.1 asic (jupiter iv) the jupiter iv (16bit risc processor), which is the executive controller to operate the printer function, is in use, and the each operation block is driven by system program of the flash memory. the whole system is controlled by driving operation block. ?ain function block ?completely integrated system for embedded applications, ?16 bit risc architecture, efficient and powerful arm7tdmi cpu ?lsu interface module for interfacing pvc or hpvc with lsu ?2 channel general purpose dma controller for high speed i/o ?dual memory bus architecture ?operating frequency : 80mhz ?operating power : 3.3v ?power on reset time : under 6.6ms 4.3.2 flash memory it stores the system program and downloads the system program through the pc interface. ?capacity : 0.5m byte ?access time : 70 nsec 4.3.3 sdram it is used as a swath buffer, system working memory area, etc. while printing. ?capacity : the 2m byte is for the ml-1710 (2m : printing system working memory area) the 16mbyte is for the ml-1750 (8m, ml-1750g/1760g) access time : 60 nsec 4.3.4 sensor input circuit 1) paper empty sensing the paper empty sensor (photo interrupter) on the engine board informs the state of paper to cpu whether it is empty or not with operation of the actuator. when cassette is empty, it detects the fact by reading the d0 bit of cpu, and then informs the fact by selecting the second led(yellow) among the panel leds. 2) mp sensing by operation of actuator on the frame, the mp sensor (photo interrupter) on the engine board informs the state of paper to cpu whether it is empty or not. it reads the d0 bit of cpu for recognizing paper in mp, and paper is fed from mp if there is.
4-11 samsung electronics summary of pr oduct training manual 3) paper feeding/width , toner cartridge sensing when paper passes the actuator (feed sensor part), it detects the signal of photo interrupter, informs the paper feeding state to cpu, and then sprays the image data after certain time. if it doesn't detect the feed sensor within 1 sec. after paper is fed, paper jam0 (cpu #_) is occurred (red and yellow will be turned on among the op panel leds), and the fact whether the developer is inserted or not is detected with the same principle. after the developer is mounted, the actuator is operated. the signal from the photo interrupter is detected when it is passing the actuator of the sensor part. that is the devel- oper id sensing. 4) paper exit sensing it detects paper state whether paper gets out from the set with operation of exit sensor on the engine board and actuator on the frame. paper detects the on/off time of exit sensor by reading d2 bit of cpu, and the normal operation or jam information is informed to the cpu. the paper jam2 is informed. (red, yellow led will be turned on among the op panel leds) 5) cover open sensing the cover open sensor is located on the front cover. after the front cover is opened, +24v (dc fan, sole- noid, main motor, polygon motor part of lsu, hvps,), which is supplied to the each unit, is cut off. the cover-open sensing is operated by the d0 bit of cpu, and the developer id sensing is operated by d7 bit of cpu. in this case, the red led among op panel leds will be on for informing the facts to user. 6) dc fan / solenoid driving it is driven by transistor and controlled by d6 bit of cpu. when it is high, the fan is driving by turning on the tr, and it is off when the sleep mode is selected. there are two solenoids, and they are driven by paper pick-up and mp signal. it is turned on or off by d4 bit of cpu, and its driving time is 300ms. the diode protects the driving tr from the noise pulse, which is flown when the solenoid is de-energizing. 7) motor driving the motor driving circuit is formed when the driver ic is selected in the first place. the an8495 (motor dri- ver ic) is used in this case. but, the resistance rs value of sensing and the voltage value of the v refer- ence can be changed by motor driving voltage value. the motor driving voltage is calculated with the fol- lowing formula.
4-12 summary of pr oduct samsung electronics training manual 4.4 main pba (pcl model)
4-13 samsung electronics summary of pr oduct training manual 4.4.1 asic(spgpm) 1) arm946es - 32-bit risc embedded processor core - 16kb instruction cache and 16kb data cache - no tightly coupled memory - memory protection unit & cp15 control program 2) dual bus architecture for bus traffic distribution - amba high performance bus (ahb) - system bus with sdram 3) ieee1284 compliant parallel port interface 4) printer video controller for lbp engines 5) graphic execution unit for banding support of printer languages 6) printer video controller for lbp engines - pvc : printer video controller without ret algorithm - hpvc : printer video controller with ret algorithm (line memory & lookup table memory : 512 x 8 , 4096 x 16) 7) engine controller - motor control unit - motor speed lookup table memory (128 x 16 x 2) - pulse width modulation unit - 4 channels are supported - adc interface unit - 3 adc channels are available - adc core (adc8mux8) maximum clock frequency : 3 mhz 8) usb 2.0 interface 9) package - 272 pins pbga 10) power - 1.8v(core), 3.3v(io) power operation 11) speed - 166mhz core(arm946es) operation, 60mhz bus operation 4.4.2 memory 1) flash memory - it stores the system program, downloads the system program through pc interface, and com- presses the pcl font, then stores it. - capacity : 2m byte - access time : 70 nsec 2) dram - it is used as swath buffer, system working memory area, etc. when printing. it stores the font list, compressed into flash memory, on dram and uses it as pcl font. - capacity : 8m byte (basic), upto 64m byte (factory option) - type : sdram 100mhz/133mhz , 16bit 4.4.3 other the option pba can be mounted for supporting the serial communication.
4-14 summary of pr oduct samsung electronics training manual 4.4.4 spgpm internal block diagram ahb bus sfr bus interface system bus interface parallel port interface uart(3ch) sdram controller (5ch) hct rotator/ scaler/ halftoner 1024x8, 256x8x 4 gcodec graphic execution unit misc controller arm946e -s core 16kb icache 16kb dcache clock & reset generator system bus arbiter mac usb2.0 external dma controller (4ch) pvc hpvc 512x8 4096x16 lsu i/f pulse width modulator engine controller mot or controller 128x16 x2 adc (3ch) addr/ data mux sfr bus system bus interrupt ctrl (5ch) time control unit engine comm. i/f epi sysmac system pll (120mhz) arbiter decoder rom controller io controller
4-15 samsung electronics summary of pr oduct training manual 4.5 smps & hvps the smps supplies the dc power to the system. it takes 110v/220v and outputs the +3.3v and +24v to supply the power to the main board and adf board. the hvps part creates the high voltage of thv/mhv/supply/dev and supplies it to the developer part for making the best condition to display the image. the hvps part takes the 24v and outputs the high voltage for thv/mhv/bias, and the outputted high voltage is supplied to the toner, opc cartridge, and transfer roller. 4.5.1 hvps(high voltage power supply) 1) transfer high voltage (thv+) - inputting voltage : 24 v dc 15% - outputting voltage : +5.0kv 5 %,(duty 10% , %, no loading) - 1.0kv 15% (when cleaning,200 m ? ) - outputting voltage trigger : 6.5 a - inputting contrast of the voltage stability degree : under 5% (fluctuating input 21.6v~26.4v) loading contrast : under 5% - outputting voltage rising time : 100 ms max - outputting voltage falling time : 100 ms max - fluctuating transfer voltage with environmental various : +650 v(duty 10%) ~ 5 kv (duty 90%) - environmental recognition controlling method : the thv-pwm active is transfer active signal. it detects the resistance by recognizing the voltage value, f/b, while permits the environmental recog- nition voltage. - outputting voltage controlling method : the transfer output voltage is outputted and controlled by changing the duty of thvpwm signal. 10% duty : +650v, 90% duty : +5kv 5% 2) charge voltage (mhv) - inputting voltage : 24 v dc 15% - outputting voltage : -1.3kv ~ -1.8kv dc 50v - outputting voltage rising time : 50 ms max - outputting voltage falling time : 50 ms max - output loading range : 30 m ? ~ 1000 m ? - output controlling signal (mhv-pwm) : cpu output is high when the pwm is low 3)cleaning voltage (thv-) - the (+) transfer voltage is not outputted because the thvpwm is controlled with high. - the (-) transfer voltage is outputted because the thv-enable signal is controlled with low. - the outputting fluctuation range is big because there is no feedback control. 4) developing voltage (dev) - inputting voltage : 24 v dc 15% - outputting voltage : -200v ~ -600v dc 20 v - outputting voltage fluctuating range : pwm control - inputting contrast of the output stability degree : under 5% loading contrast : under 5% - output voltage rising time : 50ms max - output voltage falling time : 50ms max - output loading range : 10m ~ 1000m - output controlling signal (bias-pwm) : the cpu output is high when pwm is low.
4-16 summary of pr oduct samsung electronics training manual 5) supply voltage - outputting voltage : -400 v ~ -800v dc 50 v(using zener, dev) - inputting contrast of the output stability degree : under 5% loading contrast : under 5% - output voltage rising time : 50 ms max - output voltage falling time : 50 ms max - output loading range : 10 m ? ~ 1000 m ? - output controlling signal (bias-pwm) : the cpu output is high when pwm is low. 4.5.2 smps(switching mode power supply) it is the power source for the whole system. it is an independent module, so it is possible to use for com- mon use. it is mounted at the bottom of the set. it is consisted of the smps part, which supplies the dc power for driving the system, and the ac heater control part, which supplies the power to fuser. smps has two outputting channels (3.3v and +24v). there are three kinds of power, 120v exclusive (america), 220v exclusive (europe), and 220v for china (nations with instable power supply). 1) ac input - inputting rated voltage : ac 220v ~ 240v ac 120v / ac 220v - inputting voltage fluctuating range : ac 198v ~ 264v ac 90v ~ 135v / ac 198v ~ 264v - rated frequency : 50/60 hz - frequency fluctuating range : 47 ~ 63 hz - inputting voltage : under 4.0arms/2.0arms (the state when lamp is off or rated voltage is inputted/out- putted) 2)rated power output 3)consumption power no item ch1 ch2 remark 1 channel name +3.3v +24.0v 2 connector pin con 3 con 3 5v pin: 1,3,5 24v pin: 9,11,13 gnd pin: 2,4,6 gnd pin: 10,12,14 3 rated outputting voltage 3.3v 5% +24v 10% (3.2 3.4v) (21.6 26.4v) 4 maximum outputting voltage 1.0 a 2.0 a 5 peak loading voltage 1.5 a 2.5 a 1ms 6 ripple noise voltage 100mvp-p 500mvp-p 7 maximum output 3.3w 48w 8 peak output 4.95w 60w 1ms 9 protection for loading short and - - - overflowing voltage consumption power no item ch1 ch3 system (+3.3v) (24v) 1 stand-by 1.0 a 0.4 a avg : 55 wh 2 printing 1.0 a 2.0 a avg : 250 wh 3 sleep-mode 0.8a 0.4a avg : 10 wh
4-17 samsung electronics summary of pr oduct training manual 4) length of power cord - 1830 50mm 5) power switch - use 6) feature - insulating resistance : over 50m ? (at dc500v) - insulating revisiting pressure : must be no problem within 1min. (at 1500vzc, 10ma) - leaking voltage : under 3.5ma - running voltage : under 40a peak (at 25 c, cold start) under 60a peak (in other conditions) - rising time : within 2sec - falling time : over 20ms - surge : ring wave 6kv-500a (normal, common) 7) environment condition - operating temperature range : 0 c ~ 40 c - maintaining temperature range : -25 c ~ 85 c - maintaining humid range : 30% ~ 90% rh - operating atmospheric pressure range : 1 8) emi requirement - cispr ,fcc, ce, mic, c-tick, 9) safty requrement - iec950 ul1950, csa950, c-ul,nom,tuv,semko,nemko,ik,cb, ccc(ccib),gost, epa, 4.5.3 fuser ac power control fuser (heat lamp) gets heat from ac power. the ac power controls the switch with the triac, a semicon- ductor switch. the 'on/off control' is operated when the gate of the triac is turned on/off by photo triac (insulting part). in the other words, the ac control part is passive circuit, so it turns the heater on/off with taking signal from engine control part. when the 'heater on' signal is turned on at engine, the led of pc1 (photo triac) takes the voltage and flashes. from the flashing light, the triac part (light receiving part) takes the voltage, and the voltage is sup- plied to the gate of triac and flows into the triac. as a result, the ac current flows in the heat lamp, and heat is occurred. on the other hand, when the signal is off, the pc1 is off, the voltage is cut off at the gate of triac, the triac becomes off, and then the heat lamp is turned off. 1) triac (thy1) feature - 12a,600v switching 2) phototriac coupler (pc3) - turn on if current : 15ma ~ 50ma(design: 16ma) - high repetive peak off state voltage : min 600v
4-18 summary of pr oduct samsung electronics training manual 4.6 engine f/w 4.6.1 feeding if feeding from a cassette, the drive of the pickup roller is controlled by controlling the solenoid. the on/off of the solenoid is controlled by controlling the general output port or the external output port. if feeding from a manual feeder, decide to insert the paper according to the operation of the manual sensor, and by driving the main motor, insert the paper in front of the feed sensor. while paper moves, occurrence of jam is judged as below. (refer to the [6.2 paper transfer rout]) 4.6.1.1 jam 0 after picking up, paper cannot entered due to paper didn t feed. after picking up, paper entered but it cannot reach to the feed sensor in certain time due to slip, etc. after picking up, if the feed sensor is not on, repack up. after repacking up, if the feed sensor is not on after certain time, it is jam 0. - it is a status that the leading edge of the paper doesn t pass the feed sensor. even though the paper reaches to the feed sensor, the feed sensor doesn t be on. - it is a status that the leading edge of the paper already passes the feed sensor. 4.6.1.2 jam 1 after the leading edge of the paper passes the feed sensor, the tailing edge of the paper cannot pass the feed sensor after certain time. (the feed sensor cannot be off) after the leading edge of the paper passes the feed sensor, the paper cannot reach the exit sensor after certain time. (the exit sensor cannot be on) - the paper exists between the feed sensor and the exit sensor. 4.6.1.3 jam 2 after the tailing edge of the paper passes the feed sensor, the paper cannot pass the exit sensor after certain time. 4.6.2 drive by gearing, the main motor drives the rollers such as feeding roller, developing roller, fuser roller, and dis- tributing roller. the step motor is controlled for the sections, acceleration section and fixed speed section. in the initial stage of the motor run, appoint the acceleration section to prevent the isolation of the motor. it is controlled by the a3977 motor driver ic. the step signal and the enable signal are sent to make the phase for driving the motor in cpu. 4.6.3 transfer the charging voltage, developing voltage and the transfer voltage are controller by pwm (pulse width modulation). the each output voltage is changeable due to the pwm duty. the transfer voltage admitted when the paper passes the transfer roller is decided by environment recognition. the resistance value of the transfer roller is changed due to the surrounding environment or the environment of the set, and the voltage value, which changes due to the environments, is changed through ad converter. the voltage value for impressing to the transfer roller is decided by the changed value.
4-19 samsung electronics summary of pr oduct training manual error description dcu led displat open heat error when warming up, it has been lower 60 all led are flashing. than 68 c over 28 seconds lower heat error standby: 62 all led are flashing it has been lower than 80 c over 10 seconds printing: - 2 consecutive pages: it has been lower than 145 c over 4 seconds. - 3 consecutive page; it has been 25 c lower than the fixed fusing temperature over 4 seconds. over heat error it have been higher than 220 c over 3 seconds 68 all led are flashing error description dcu led displat open heat error when preheating, it has been lower than 68 c 60 all led are flashing over 15 seconds. lower heat error after finishing the preheating stage, 62 all led are flashing it has not reached 100 c (preheating stop temperature) during 15 seconds since the temperature is over 68 c. printing 1) when the main motor is on and after 0.92 second, it has not reached the 160 c during 20 seconds. 2) from the 2 consecutive pages, it has been 20 c lower than the fusing temperature over 4 seconds. over heat error the error is not displayed immediately when 68 all led are flashing it has been over 220 c over 3 seconds. the temperature after the 3 seconds is checked. if it is over 240 c, it is error. if the temperature has been higher than 220 c over 25 seconds, it is an error even through the temperature doesn t reach 240 c. 4.6.4 fusing the temperature change of the heat roller s surface is changed to the resistance value through the thermis- tor. by converting the voltage value, which impressed to the resistance, to the digital value through the ad converter, the temperature is decided. the ac power is controlled by comparing the target temperature to the value from the thermistor. if the value from the thermistor is out of the controlling range while control- ling the fusing, the error stated in the table occurs. (for the domestic model, the q-pid method has been applied.) 4.6.4.1 heat lamp method 4.6.4.2 q-pid method
4-20 summary of pr oduct samsung electronics training manual 4.6.4.3 what is the q-pid method? the q-pid is developed by samsung, and it saves the preheating time in half in comparison with the exist- ed method. it saves not only the printing time for initial print but also it saves the printing speed for the reattempting print after for a while. 4.6.5 lsu the lsu is consisted of the ld (laser diode) and the polygon motor control. when the printing signal occurs, it turns the ld and drives the polygon motor. when the receiving light part detects the beam, hsync occurs. when the polygon motor speed becomes a normal, lready occurs. if two conditions are satisfied, the status bit of the lsu controller register becomes 1 to be judged that the lsu is ready. if two conditions are not satisfied, the error shown in below occurs. toner toner air layer holgen lamp paper pressure roller heat pipe heating wire paper pressure roller after heating the air layer, transfer the heat to the surface it takes long time to heat it until it reaches the proper temperature. the high temperature is needed when it is standby status. the heat conductivity of the heat pipe is 100~150 times higher than cooper s. it is possible to raise the temperature in an instant it saves the dissipation of power in the standby status due to high accumulation of heat. error description dcu polygon motor error when the polygon motor s speed doesn t 95 become a normal hsync error the polygon motor s speed is normal, 96 but the hsync signal is not created.
5 5 5-1 samsung electronics disassembly and reassembly training manual 5. disassembly and reassembly 5.1 general precautions on disassembly when you disassemble and reassemble compo- nents, you must use extreme caution. the close proximity of cables to moving parts makes proper routing a must. if components are removed, any cables disturbed by the procedure must be restored as close as possible to their original positions. before remov- ing any component from the machine, note the cable routing that will be affected. whenever servicing the machine, you must perform as follows: 1. check to verify that documents are not stored in memory. 2. be sure to remove the toner cartridge before you disassemble parts. 3. unplug the power cord. 4. use a flat and clean surface. 5. replace only with authorized components. 6. do not force plastic-material components. 7. make sure all components are in their proper position. releasing plastic latches many of the parts are held in place with plastic latches. the latches break easily; release them carefully. to remove such parts, press the hook end of the latch away from the part to which it is latched.
5-2 disassembly and reassembly samsung electronics training manual 1. pull the cassette out of the printer. 2. remove the front cover in the direction of arrow. 3. remove four screws. 4. unlatch the front ends of the top cover. 5. remove the top cover in the direction of arrow. 6. remove the rear cover from the top cover. cassette top cover rear cover front cover 5.2 top cover
5-3 samsung electronics disassembly and reassembly training manual 1. before you remove the fuser, you should remove: - top cover(see page 5-2) 2. unplug two connectors(block) from the boards, then remove four screws. 3. remove two screws and take the thermostat out of the fuser. 4. remove two screws and take the halogen lamp out of the heat roller. 5. remove one screw and take the idle gear out. 6. remove four screws and divide the fuser into two parts 7. remove the thermister from the fuser cover. idle gear fuser cover fuser ass'y thermostat halogen lamp heat roller 5.3 fuser 5.3.1 fuser(110v) thermister
5-4 disassembly and reassembly samsung electronics training manual 5.3.2 fuser(220v) 1. before you remove the fuser, you should remove: - top cover(see page 5-2) 2. unplug two connectors(block) from the boards, then remove four screws. 3. remove two screws and take the thermostat out of the fuser. 4. remove two screws. 5. remove one screw and take the idle gear out. fuser ass?y idle gear thermostat
5-5 samsung electronics disassembly and reassembly training manual 6. separate heat roller ass'y after remove six screws and after removing 6 screws as shown in below, take out the heat roller assembly in direction of the arrow while pulling the both side of the unit- brush caution: be careful not to damage or contaminate the surface of the roller when assembling/disassembling the heat roller. 7. unplug thermister harness from the fuser cover. 8. remove one screw and separate thermister from the inter connector fuser cover. thermister harness thermister fuser cover unit-brush heat roller
5-6 disassembly and reassembly samsung electronics training manual 1. before you remove the fuser, you should remove: - top cover(see page 5-2) 2.remove the exit gear, bearing and exit roller as shown below exit gear bearing exit roller 1 2 5.4 exit roller 5.5 lsu 1. before you remove the fuser, you should remove: - top cover(see page 5-2) 2. remove two screws and unplug one connector from the frame. 3. remove the led pba ass ? y as shown below. 4. unplug two connector from the lsu 5. unplug four screws and take the lsu out. lsu led pba cover
5-7 samsung electronics disassembly and reassembly training manual 1. before you remove the fuser, you should remove: - top cover(see page 5-2) 2. unplug the connector from the smps and remove the one screw. then take out the fan. dc fan 5.6 fan 5.7 driver ass? 1. before you remove the fuser, you should remove: - top cover(see page 5-2) 2. remove the six screws from the drive ass ? y. 3. unplug one connector from the driver ass ? y drive ass'y
5-8 disassembly and reassembly samsung electronics training manual 1. before you remove the fuser, you should remove: - top cover(see page 5-2) - fuser connector(see page 5-3) 2. remove the fourteen screws securing from the engine shield ass ? y and unplug the all connec- tors. then take the engine shield ass ? y. engine shield ass'y 5.8 engine shield ass? 5.9 main pba 1. before you remove the fuser, you should remove: - top cover(see page 5-2) - engine shield ass ? y(see page 5-8) 2. unplug one connector and remove five screws from the main pba. then lift the main pba out, as shown below. main pba
5-9 samsung electronics disassembly and reassembly training manual 5.10 smps 1. before you remove the fuser, you should remove: - top cover(see page 5-2) - engine shield ass ? y(see page 5-8) 2. unplug one connector and remove three screws then take the inlet ass ? y out. 3. remove one screw and unplug one connector from the main pba. 4. remove three screws and take the smps out. inlet bracket smps
5-10 disassembly and reassembly samsung electronics training manual 5.11 transfer roller 1. before you remove the fuser, you should remove: - top cover(see page 5-2) - lsu(see page 5-6) 2. remove three screws and take the transfer earth out. 3. unplug the ptl holder connector, then remove the ptl holder and ptl lens, as shown below. 4. unlatch the bush and remove it. then lift the transfer roller out, as shown below. transfer earth ptl holder ptl lens transfer roller bush
5-11 samsung electronics disassembly and reassembly training manual 5.12 feed roller 1. before you remove the fuser, you should remove: - top cover(see page 5-2) - drive ass ? y(see page 5-7) 2. pull up the feed idle bush and feed idle shaft, as shown below. 3. remove three screws from the feed bracket and take it out. 4. remove the idle gear and feed gear2. 5. remove the feed gear 1 ass ? y, as shown below. 6. remove the feed roller and feed roller 1, as shown below. bush feed idle shaft feed bracket feed gear2 idle gear feed gear1 ass'y feed roller1 feed roller
5-12 disassembly and reassembly samsung electronics training manual 1. before you remove the fuser, you should remove: - top cover(see page 5-2) - drive ass ? y(see page 5-7) - engine shield ass ? y(see page 5-8) 2. remove the pick up gear ass ? y, as shown below. 3. remove the pick up ass ? y, as shown below. pick up gear ass'y pick up ass'y 1 2 bush 5.13 pick up roller 5.14 solenoid 1. before you remove the fuser, you should remove: - top cover(see page 5-2) - drive ass ? y(see page 5-7) - engine shield ass ? y(see page 5-8) - pick up roller(see page 5-11) 2. remove two screw then remove the manual solenoid and pick up solenoid. (pick up) solenoid (manual) solenoid
6 6 6-1 samsung electronics alignment & adjustments training manual 6. alignment and adjustments this chapter describes the main functions for service, such as the product maintenance method, the test output related to maintenance and repair, dcu using method, jam removing method, and so on. it includes the contents of manual. 6.1 how to use dcu 6.1.1 dcu setup you can examine the malfunction of the printer. to perform dcu, open the front discharge cover and leave the connect the harness wire(10 pin/4 pin) to the cn10(4 pin) of the main control board. ml series diagnostic control unit 04 05 07 08 09 10 dev 300 lsu ready paper empty cover open coer heating dev 350 lsu mt & ld paper width exit sensor printing temp dev 350 lsu motor new cru feed sensor ready heat on off status self test diagnostic diagnostic code 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 61 00 01 02 03 04 20 30 40 50 69 60 62 68 64 70 71 72 73 95 main motor operating system main high-voltage on trnsfer high-voltage (-)on thv(+) referance voltage dev/supply high-voltage on/ptl on lsu operating system pickup clutch on peempty/pwith/new cru test feed & exit sensor test cover open sensor test fuser test hot burn test clean mode print thv(+)trigger, all hv & fan on thv(+) reference on error status code status code warm up ready (regal) ready (letter) ready (a4) ready (executive) ready (b5) print start feed sensor on feed sensor off paper out sleep mode open fuser error low temperature error over heating error cover open error no paperr paper jam 0 paper jam 1 paper jam 2 lsu not ready diagnostic mode down up enter shift stop to enter diagnostic mode, push three buttons simul aneousl and turn the printer power on.
6-2 alignment & adjustments samsung electronics training manual 6.1.2 code connect dcu to the printer and turn the power on. it show 7 segment fnd on the panel and each code tells the function of the printer. 1) normal code while printing or warming up, it indicate the position of the paper 2) error code when detecting the malfunction, the printing is stopped to indicate error code. code state description 61 warm up the printer is on, the cover is open or close. 00~05 ready(kind of paper) the printer is ready, the paper is detected when the first paper is printed. 00: legal ,01: letter ,02: a4 ,03: exec ,04: b5 ,05: folio, 06: a5/a6 20, 21, 22 print start the engine controller received the print order from the video con- troller. 20: 1st, 21: mp, 22: scf 30 feed sensor on the paper is passing out of the feed sensor. 40 feed sensor off the paper has passed out of the feed sensor. 50 paper out the paper has passed out of exit sensor. 69 sleep mode the fuser power turned off to minimize the power consumption. code state description 60, 62, 68 fuser error the error in the fuser occurred. there is a short circuit in the thermistor and the thermostat while printing, low temperature error occurs. ?60: open fuser error ?62: low heat error ?68: over heat error 64 cover open the printer cover is open. 65 cru error the toner cartridge not installed, 70 no paper no paper in the paper cassette. 71 paper jam 0 the front part of paper is jammed between pickup unit and feed sensor. 72 paper jam 1 the front part of paper is jammed between the discharge sensor and feed sensor. 73 paper jam 2 the front part of paper is jammed just after passing through the discharge sensor. 76 out bin full the out bin is filled with paper. 95 lsu not ready lsu scanner motor not ready or hsync signal not output.
6-3 samsung electronics alignment & adjustments training manual 6.1.3 self diagnostic mode if error code occurs due to malfunction of the printer, perform self diagnostic mode to solve the problem. the printer works only in the self-test mode to solve the malfunction problem. to enter the self-test mode, turn the power on pressing the buttons of [down], [shift] and [stop] at the same time. release the button within 2 or 3 seconds if 78 shows in the dcu. if 00 shows in the dcu, press the button [up] or [shift] to select the self+test , and press the button of [enter] to operate. to stop, press the button of [shift] and [enter] together. code description 00 main motor operating system only the main motor is in operation. 01 main high voltage on(thv-) -1400 voltage output by mhv terminal. caution : high voltage probe should be used. 02 transfer high voltage(-)on(thv-) -1000 voltage output by mhv terminal. caution : high voltage probe should be used. 03 transfer high voltage (+)reference on (thv +) +800 voltage output by mhv terminal. caution : high voltage probe should be used. 04 dev/supply high voltage : dev/supply high voltage test. the left one of the three leds in the self-test panel is on when dev high voltage supply high voltage output by each hv terminal(-500v). press the [up] button to switch the volt- age. the middle and right one of the three leds are on and -650 voltage output by dev hv terminal. caution : high voltage probe should be used. 05 lsu operating system the scanning motor of lsu is in operation, the right led of the three buttons on. press the [up] button to check ld. ld is functioning and the middle button is on. if the ld is normal, all leds are on. 06 pickup clutch on the solenoid in the printer is in operation. to stop the operation, press the button [shift] and [enter] together.
6-4 alignment & adjustments samsung electronics training manual code description 07 paper empty sensor test : if activate the actuator of the pempty sensor, the left and right of the three leds are on. paper empty sensor on/off 1st led on/off 08 feed & exit sensor test test the feed sensor and discharge sensor in the same way as '07'. feed sensor on/off 2nd led on/off exit sensor on/off 3rd led on/off 09 cover open sensor test test the cover open sensor in th same way as code '07 cover open sensor on/off 1st led on/off 10 fuser test if the [enter] button pressed, the right led is on and temperature of the fuser is up to ready mode. if the [up] button pressed, the middle led is on and temperature of the fuser is up to printing mode. if you press the button once more, the left led is on and temperature of the fuser is up to overheat mode. 11 hot burn test if the [enter] button pressed, the printer is continuously printing without detection. turn the power off to stop operation. 12 cleaning mode print mode print the paper to clean the opc drum in the cartridge. 13 thv(+) trigger. all hv : all high voltage output by each hv terminal and lsu and the fan is in operation. in this mode, electronic resistance of transfer roller and high voltage is detected. 14 ptl test : indicates the function of the ptl, same method of the code ?7? 15 fan test : indicates the function of the fan, same method of the code ?7? 16 manual pickup test : indicates the function of th manual pickup, same method of the code ?7? 17 manual sensor test : indicates the function of the manual sensor, same method of the code ?7?
6-5 samsung electronics alignment & adjustments training manual 6.1.4 self test button if the self-test button pressed, vertical lines are printed. turn the power on while pressing this button, '89' shows in the dcu and the printer is warming up. after warming-up the printer is in ready mode, and '88' shows in the dcu. in this mode, without any detection, the printer begins printing(trial printing and data from the pc). it is convenient to use this mode when the engine malfunction is detected in the control board.
6-6 alignment & adjustments samsung electronics training manual 6.2 paper path ptl p i c k / r pr cr dr sr tr fr opc l s u fuser toner cartridge 1 1 2 2 3 3 4 4 paper input (cassette) paper input (manual feeder) paper out(face down) paper out(face up) 5 5 6 6 7 7 paper empty sensor paper feeding sensor paper exit sensor feed sensor mp sensor ptl p i c k / r pr cr dr sr tr fr empty sensor opc l s u fuser toner cartridge exit sensor feed sensor mp sensor ptl p i c k / r pr cr dr sr tr fr empty sensor opc l s u fuser toner cartridge exit sensor feed sensor mp sensor ptl p i c k / r pr cr dr sr tr fr empty sensor opc l s u fuser toner cartridge exit sensor feed sensor mp sensor 1) after taking order, the printer feeds the printing paper from the cassette or manual feeder. 2) the fad paper passes the paper feeding sensor. (jam 0 occurs if the sensor is not operated after certain time passes) 3) the paper passed the paper feeding sensor moves to the paper exit sensor via printing process. (jam 1 occurs if the sensor is not operated after certain time passes) 4) the paper passed the paper exit sensor moves out from the set. (jam 2 occurs sometime after if the tail- ing edge of the paper is not coming out from the set after the leading edge of paper passes the paper exit sensor.)
6-7 samsung electronics alignment & adjustments training manual 6.3 clearing paper jams occasionally, paper can be jammed during a print job. some of causes include: ?the tray is loaded improperly or overfilled. ?the tray has been pulled out during a print job. ?the front cover has been opened during a print job. ?paper that does not meet paper specifications has been used. ?paper that is outside of the supported size range has been used. if a paper jam occurs, the on line/error led on the control panel lights red. find and remove the jammed paper. if it is invisible, look inside the printer. 6.3.1 in the paper exit area (jam2) 1) if the paper jams as it exits to the output tray and a long portion of the paper is visible, pull the paper straight out. when you pull the jammed paper, if there is resistance and the paper does not move immediately, stop pulling. continue with the next step. 2) open the rear output tray. 3) loosen the paper if it is caught in the feed rollers. then pull the paper gently out. note: please be careful when you open the rear cover. the inside of the printer is still hot. 4) close the rear output tray. open and close the front cover. printing can be resumed.
6-8 alignment & adjustments samsung electronics training manual 6.3.2 in the paper feed area 1) open the front cover and remove the toner cartridge 2) gently pull the paper toward you. 3) check that there is no other paper in the printer. 4) reinstall the toner cartridge, and then close the cover. printing can be resumed. 1) slide out the tray to expose the jammed paper. 2)remove any missfeed paper by pulling it out by the visible edge from the tray. make sure that all of the paper is proper- ly aligned in the tray. 3) slide the tray back into the printer. open and close the front cover. printing can be resumed. 6.3.2 in the paper feed area (jam0) 6.3.3 around the toner cartridge (jam1)
6-9 samsung electronics alignment & adjustments training manual 3.3.4 tips for avoiding paper jams by selecting the correct paper types, most paper jams can be avoided. if a paper jam occurs, follow the steps outlined in ?ensure that the adjustable guides are positioned correctly. ?do not overload the tray. ensure that the paper is below the paper capacity mark on the right inside of the tray. ?do not remove the paper from the tray while printing. ?flex, fan and straighten the paper before loading. ?do not use creased, damp or highly curled paper. ?do not mix paper types in the input tray. ?use only recommended print media. ?ensure that the recommended print side is facing down when loading paper into the input tray.
6-10 alignment & adjustments samsung electronics training manual 6.4 sample pattern this product has the several sample patterns for maintenance. with the sample patterns, check the exis- tence of the abnormality. the patterns help to regularly maintain the product. 6.4.1 printing a demo page print a demo page or a configuration sheet to make sure that the printer is operating correctly. 1) hold down the cancel button for about 2 seconds to print a demo page. hold down the cancel button for about 6 seconds to print a configuration sheet. 2) the demo page or the configuration sheet shows the printers current configuration.
6-11 samsung electronics alignment & adjustments training manual 6.4.2 printing a cleaning sheet if you are experiencing blurred, faded or smeared printouts. printing a cleaning sheet cleans the drum inside the toner cartridge. this process will produce a page with toner debris, which should be discarded. 1) ensure that the printer is turned on and in the ready mode with paper loaded in the tray. 2) press and hold down the cancel button on the control panel for about 10 seconds. 3) your printer automatically picks up a sheet of paper from the tray and prints out a cleaning sheet with dust or toner particles on it. note: the cartridge cleaning process takes some time. to stop printing, turn the power off.
6-12 alignment & adjustments samsung electronics training manual component replacement cycle pick-up roller 60,000 pages paepr feeding roller(friction pad) 60,000 pages transfer roller 60,000 pages fuser 60,000 pages toner cartridge 3,000 pages 6.5 consumables and replacement parts the cycle period outlined below is a general guideline for maintenance. the example list is for an average usage of 50 transmitted and received documents per day. environmental conditions and actual use will vary these factors. the cycle period given below is for reference only.
6-13 samsung electronics alignment & adjustments training manual 6.6 periodic defective image if the delinquent image regularly occurs in the printed-paper, it is due to delinquent or damaged roller. refer to the table in below and check the condition of the roller. no roller defective image typical defect 1 opc drum 75.5mm white spot on black image 2 charge roller 37.7mm black spot 3 supply roller 37.0mm light or dark horizontal image band 4 developing roller 35.3mm horizontal image band 5 transfer roller 45.3mm image ghost 6 heat roller 64.1mm black spot and image ghost 7 pressure roller 75.5mm black spot on the backside ptl l s u fuser toner cartridge 1 2 3 7 6 5 4 mp sensor 1 2 3 4 opc drum charge roller supply roller developing roller 5 6 7 tramsfer roller heat roller pressure roller ptl p i c k / r pr cr dr sr tr fr opc l s u fuser toner cartridge mp sensor
6-14 alignment & adjustments samsung electronics training manual
7 7 7-1 samsung electronics troubleshoo ting training manual 7. troubleshooting 7.1 bad image 7.1.1 vertical black line and band ?description 1. straight thin black vertical line occurs in the printing. 2. dark black vertical band occur in the printing. digital printer digital printer digital printer digital printer digital printer check and cause solution 1. damaged develop roller in the developer. deformed doctor-blade or cleaning- blade. 2. scratched surface of the discharge roller in the developer. 3. partly depression or deformation on the surface of the transfer roller. 1. if causes 1 and 2 occur in the developer cartridge, replace the developer and try to print out. 2. replace the transfer roller if occurred as no. 3. 7.1.2 vertical white line ?description white vertical voids in the image. digital printer digital printer digital printer digital printer digital printer check and cause solution 1. foreign matter stuck onto the window of internal lenses of lsu mirror. 2. foreign matter or toner particles between the developer roller and blade. (in case the life of the developer has been expired, white lines or light image occur in front of the image.) 3. it may occur when burr and foreign sub- stances are on the window of the devel- oper frame. 4. if the fuser is defective, voids occur peri- odically at the top of a black image. 1. foreign matter stuck onto the window : clean the lsu window with recommend- ed cleaner(ipa) clean the window with a clean cotton swab. 2. foreign matter in the lsu : open the cover of lsu and clean with a cotton swab on the surface of the reflex mirror. 3. no 3. : remove the foreign matter and burr of the exposure window. (developer cartridge) 4. no. 4. : open the front cover and check ribs that corresponds to the position of the voids. remove if found. 5. if the problems are not solved, replace the developer cartridge.
7-2 troubleshoo ting samsung electronics training manual 7.1.3 horizontal black band ?description 1. dark or blurry horizontal stripes occur in the printing periodically. (they may not occur periodically.) digital printer digital printer digital printer digital printer digital printer check and cause solution 1. bad contacts of the voltage terminals to developer. 2. the rollers of developer may be stained. charge roller = 37.7mm supply roller = 37mm develop roller = 35.3mm transfer roller = 45.3mm 1. clean each voltage terminal of the charge, supply, develop and transfer roller. (remove the toner particles and paper par- ticles) 2. clean the right gear that has relatively small gap of the teeth in the opc. 3. if the malfunction persists, replace the developer. 7.1.4 black/white spot ?description 1. dark or blurry black spots occur periodically in the printing. 2. white spots occur periodically in the printing. digital printer digital printer digital printer digital printer digital printer check and cause solution 1. if dark or blurry black spots occur periodi- cally, the rollers in the developer may be contaminated with foreign matte or paper particles. ( charge roller : 37.7 mm interval opc drum : 75.5 mm interval) 2. if faded areas or voids occur in a black image at intervals of 75.5 mm, or black spots occur elsewhere, the opc drum surface is damaged. 3. if a black image is partially broken, the transfer voltage is abnormal or the trans- fer roller's life has expired. 1. run opc cleaning mode print and run the self-test 2 or 3 times. 2. in case of 75.5 mm interval unremovable in 1, cleanly remove foreign substances stuck on the opc location equivalent to black spots and white spots with a dry duster. 3. the transfer roller guarantees 60.000 sheets printing. if the roller's life is expired, replace it. 4. in case of 37.7 mm interval unremovable in 1, take measures as to replace the develop- er cartridge and try to print out. 5. clean the inside of the set against the paper particles and foreign matter in order not to cause the trouble.
7-3 samsung electronics troubleshoo ting training manual 7.1.5 light image ?description the printed image is light, with no ghost. digital printer digital printer digital printer digital printer digital printer check and cause solution 1. develop roller is stained when the toner of developer cartridge is almost con- sumed. 2. ambient temperature is below than 10?. 3. bad contact caused by the toner stains between the high voltage terminal in the hvps and the one in the set. 4. abnormal output from the hvps. 1. check if the toner save mode is off. 2. r eplace the developer cartridge and try to print out. 3. wait 30 minutes after printer is powered on before you start printing. 4. clean up the contaminated area by the toner. 5. replace the hvps if the problems are not solved by the above four directions. 7.1.6 dark image or a black ?description the printed image is dark. digital printer digital printer digital printer digital printer digital printer check and cause solution 1. no charge voltage in the engine board. ( perform dcu diagnostic code 01) 2. charge voltage is not turned on due to the bad contacts between power supply in the side of the developer and charge terminal of hvps. 1. clean the high voltage charge terminal. 2. check the state of the connector which connects the engine board and hvps. 3. replace the hvps if not solved by the above direction 1 and 2.
7-4 troubleshoo ting samsung electronics training manual 7.1.7 uneven density ?description print density is uneven between left and right. check and cause solution 1. the pressure force on the left and right springs of the transfer roller is not even, the springs are damaged, the transfer roller is improperly installed, or the trans- fer roller bushing or holder is damaged. 2. the toner level is not even on the devel- oper roller due to the bad blade. 1. replace both the left and right spring holder. 2. occur in the developer cartridge, replace the developer and try to print out. 7.1.8 background ?description light dark background appears in whole area of the printing. digital printer digital printer digital printer digital printer digital printer check and cause solution 1. does character exist less than 2% per a page, and hasn? it been used long time? 2. does recycle paper be used? 3. has the life span of the developer ended? 4. is the movement(up and down) of the transfer roller smooth? 5. is the hvps normal? 1. the toner cartridge is basically designed to print 3,000 sheets with 5% image. if it prints more than 3,000 sheets (around 5,000 sheets) with 2% image, a background can be occurred. 2. the b/s is not guaranteed if using recycle paper. 3. replace the developer when the life span of it has been ended. 4. clean the bushing part of the transfer roller. 5. if the problem is still not solved, replace the developer.
7-5 samsung electronics troubleshoo ting training manual 7.1.9 ghost (1) ?description ghost occurs at 75.5 mm intervals of the opc drum in the whole printing. digital printer digital printer digital printer digital printer digital printer digital printer 75.5mm check and cause solution 1. bad contacts caused by contamination from toner particles between high voltage terminal in the main body and the elec- trode of the developer. 2. bad contacts caused by contamination from toner particles between high voltage terminal in the main body and the one in the hvps board. 3. the life of developer is expired. 4. transfer roller lifetime(60.000 sheets) has expired. 5. abnormal low temperature(below 10?). 1. clean the terminals when contaminated by toner particles. 2. occur in the developer cartridge, replace the developer and try to print out. 3. replace the engine board if not solved by the above directions 1-2. 4. if not solved by the direction 3, check the transfer roller lifetime and replace it. 5. wait about 1 hour after power on before using printer. 7.1.10 ghost (2) ?description ghost occurs at 75.5 mm intervals of the opc drum in the whole printing. (when printing on card stock or transparencies using manual feeder) digital printer digital printer digital printer digital printer digital printer digital printer 75.5mm check and cause solution when printing on card stock thicker than nor- mal paper or transparencies such as ohp, higher transfer voltage is required. select 'thick mode' on paper type menu from the software application and after using return- ing to the original mode is recommended.
7-6 troubleshoo ting samsung electronics training manual 7.1.11 ghost (3) ?description white ghost occurs in the black image printing at 32mm intervals. digital printer digital printer digital printer digital printer digital printer digital printer 37mm check and cause solution 1. the life of the developer may be expired. 2. the abnormal voltage and bad contact of the terminal of the supply roller 1. occur in the developer cartridge, replace the developer and try to print out. 2. check the approved voltage of the supply roller and contact of the terminal and adjust if necessary. 7.1.12 ghost (4) ?description ghost occurs at 47 mm intervals. digital printer digital printer digital printer digital printer digital printer digital printer 47mm check and cause solution the temperature of the fuser is maintained high. 1. disassemble the fuser and remove the contaminated toner particles on the roller and clean the foreign matter between thermistor and heat roller. ( caution : can be deformed) 7.1.13 satins on the face of page ?description the background on the face of the printed page is stained. digital printer digital printer digital printer digital printer digital printer check and cause solution 1. toner leakage due to improperly sealed developer. 2. if the transfer roller is contaminated, satins on the face of page will occur. 1. replace the developer cartridge. 2. if the transfer roller is contaminated, run pc cleaning mode print 2 or 3 times. and perform self-test 2 or 3 times to remove contamination.
7-7 samsung electronics troubleshoo ting training manual 7.1.14 satins on back of page ?description the back of the page is stained at 47 mm intervals. digital digital pri digital printer digital printer digital printer check and cause solution 1. transfer roller is contaminated. 2. pressure roller is contaminated. 1. perform the opc cleaning mode print 2 or 3 times. run self-test to remove the conta- mination of the transfer roller. 2. replace the transfer roller if contaminated severely. 3. disassemble the fuser and clean the h/r(heat roller) and p/r(pressure roller). and check the area between h/r and thermistor. if contaminated, clean the area not to be deformed. 7.1.15 blank page print out (1) ?description blank page is printed. digital printer digital printer digital printer digital printer digital printer check and cause solution bad ground contacts in opc and/or devel- oper. remove contamination of the terminals of the developer and the unit. 7.1.16 blank page print out (2) ?description 1. blank page is printed. 2. one or several blank pages are printed. 3. when the printer turns on, several blank pages print. check and cause solution 1. bad ground contacts in opc and/or developer. 2. abnormal solenoid. 1. remove contamination of the terminals of the developer. 2. perform the engine self test using dcu to check if the solenoid is normal.(refer to code 06) 3. if not solved by the above directions 1-2, replace the engine board. 4. turn the power off, delete the data of pc and try printing again.
7-8 troubleshoo ting samsung electronics training manual 7.2.1 wrong print position ?description printing begins at wrong position on the paper. check and cause solution wrong sense time caused by defective feed sensor actuator. replace the defective actuator check and cause solution 1. check the solenoid by using dcu diagnostic mode 06. 2. check if the pad is loose due to bad sealing of the side-pad. 3. check the surface of the roller-pickup for foreign mat- ter. 4. if the paper feeds into the printer rand jam 0 occurs, perform dcu to check feed-sensor of the engine board. 1. replace the solenoid. 2. replace the side-pad assembly l or r, if necessary. 3. clean with soft cloth dampened with ipa(isopropyl alcohol) or water. 4. replace the smps-hvps and/or sensor. 7.2.2 jam 0 ?description 1. paper is not exited from the cassette. 2. jam-0 occurs if the paper feeds into the printer. ptl p i c k / r pr cr dr sr tr fr empty sensor opc l s u fuser toner cartridge exit sensor feed sensor mp sensor 7.2 bad discharge
7-9 samsung electronics troubleshoo ting training manual check and cause solution 1. if the recording paper is jammed in front of or inside the fuser. (perform dcu diagnostic code 08) 2. if the recording paper is stuck in the discharge roller and the fuser just after passing through the actuator- feed, feed actuator may be defective. 1. replace the smps. 2. reassemble the actuator-feed and spring-actuator if the returning is bad. 7.2.3 jam 1 ?description 1. recording paper is jammed in front of or inside the fuser. 2. recording paper is stuck in the discharge roller and in the fuser just after passing through the actuator-feed. ptl p i c k / r pr cr dr sr tr fr empty sensor opc l s u fuser toner cartridge exit sensor feed sensor mp sensor check and cause solution 1. if the paper is completely fed out of the printer, but jam 2 occurs : exit sensor is defective. ?after the paper is completely discharged, actuator exit should return to the original position to shut the photo-sensor. sometimes it takes longer hour than it should and does not return. 2. if the paper is rolled in the fuser roller: ?this occurs when a guide claw is broken away or transformed. ?it occurs when the spring of a guide claw is broken away or transformed. ? it occurs when the heat-roller or pressure-roller is seriously contaminated with the toner. 3. paper is accordion in the fuser. 1. check if the exit sensor actuator is defective. ?check if the actuator exit is unformed (check if the lever part is unformed in shape). ?check whether burrs occur in the assembly part of the actuator exit or not and if the actuator is smoothly operated. ?check if foreign matters and wire get caught in the actuator exit's operation. 2. if the paper is stuck in the fuser : disassemble the fuser and remove the jammed paper, and clean the surface of the pressure roller with dry gauze. 3. remove the jammed paper after disassembling the fuser : clean the surface of the pressure roller with dry gauze. ?remove the toner particles stained on the rib. ?check the assemblage and performance of the exit. 7.2.4 jam 2 ?description 1. recording paper is jammed in front of or inside the fuser. 2. recording paper is stuck in the discharge roller and in the fuser just after passing through the actuator-feed. ptl p i c k / r pr cr dr sr tr fr empty sensor opc l s u fuser toner cartridge exit sensor feed sensor mp sensor
7-10 troubleshoo ting samsung electronics training manual 7.2.5 multi-feeding ?description multiple sheets of paper are fed at once. check and cause solution 1. solenoid malfunction(the solenoid does not work properly): perform dcu diagnostic code 06. 2. pad-friction is contaminated with foreign matter.(oil...) 3. the face of paper is blended. 1. replace the solenoid if necessary. 2. clean the pad friction with soft clothe dampened with ipa(isopropyl alcohol). 3. use the smooth paper. 7.2.6 paper rolled in the fuser ?description if contaminated at intervals of 57mm on the back of a paper. check and cause solution 1. contamination of the pressure roller or heat roller (background, hot off set). 2. check the claw of the fuser whether it is unfit- ted. 1. after disassembling the fuser, clean contami- nation between the heat roller and the ther- mostor and remove the contamination of the pressure roller. 2. if there is heavy background, repair it by the background troubleshooting method. 3. the surface of the heat roller with ipa or water 4. check the warp or separation of the sprint claw and the holder plate claw, and then man- age it.
7-11 samsung electronics troubleshoo ting training manual 7.2.7 paper rolled in the toner cartridge (opc drum) ?description paper is rolled up in the opc. check and cause solution 1. paper is too much thin. 2. the face of paper is curled. 1. recommend to use normal paper. 2. how to remove the rolled in the opc drum. ?remove the paper while turning the opc drum against the ongoing direction. ?c;eam fomger[romts on the opc drum spft;u with ipa(isopropyl alcohol) or tissue.
7-12 troubleshoo ting samsung electronics training manual 7.3 malfunction 7.3.1 all leds blinking (fuser error) ?description 1. all the lamps on the operator panel blink. 2. gear of the fuser does not work and breaks away melt away. when printing, motor breaks away from its place due to defective fuser gear. check and cause solution 1. check if the thermostat, ac wire and heat lamp is open. 2. check if the thermistor sensor is in place. 3. check if the heat lamp works properly. 4. check if the overheat circuit works properly. 5. the fuser gear is defective due to melting away. 1. if the thermostat is open replace the fuser and check following items. 2. if the thermistor sensor device is located deep in the sponge, replace the fuser. 3. check if the circuit of overheat mode works properly. 4. run dcu mode : perform dcu diagnostic code 10. 5. replace fuser. 7.3.2 all leds blinking (scan error) ?description 1. all lamps on the operator panel blink. check and cause solution dcu mode : perform dcu diagnostic code 05. if the dcu error code 95 is displayed, replace lsu. replace lsu. if you cannot solve the problem after you replace lsu, replace the main board.
7-13 samsung electronics troubleshoo ting training manual 7.3.3 not function of the gear of the fuser due to melting away ?description the motor breaks away from its place due to gear melting away. check and cause solution dcu mode : check if the error states '60' '62' '68' occur. check the operation of fuser erasing lamp on/off with the error code check -10-. 1. replace the fuser. 2. replace the main control board. 7.3.4 paper empty ?description the paper lamp on the operator panel is on even when paper is loaded in the cassette. check and cause solution 1. bending or deformation of the actuator of the paper sen- sor. 2. the function of the engine board is defective perform dcu mode : perform dcu diagnostic code 8. 1. replace the defective actuator. 2. replace the engine board. 7.3.5 paper empty without indication ?description the paper lamp on the operator panel does not come on when the paper cassette is empty. check and cause solution 1. bending or deformation of the actuator of the paper sen- sor. 2. the function of the engine board is defective perform. dcu mode : perform dcu diagnostic code 8. 1. replace the defective actuator. 2. replace the engine board.
7-14 troubleshoo ting samsung electronics training manual 7.3.6 cover open ?description the error lamp is on even when the print cover is closed. check and cause solution 1. the hook lever in the top cover may be defective. 2. check the connector (engine b? ? hvps) and circuit of the cover switch department in the main control board. perform dcu mode : if error state '64' occurs, check the related codes of the cover open error. 1. replace the hook lever, if defective. 2. check the insertion of the cover open s/w connect. 3. replace the main control board or cover open s/w. 7.3.7 no lamp on when the cover is open ?description the error lamp does not come on even when the printer cover is open check and cause solution 1. check the connector(cn8) and circuit of the cover switch department in the main control board. perform dcu mode : if error state '64' occurs, check the related codes of the cover open error 1. check the insertion of the cover open s/w connect. 2. replace the main control board or cover open s/w.
7-15 samsung electronics troubleshoo ting training manual 7.3.8 defective motor operation ?description main motor is not driving when printing, and paper does not feed into the printer, resulting 'jam 0'. check and cause solution 1. motor harness or sub pcb may be defective. 2. perform dcu diagnostic code 00 and check the motor operation. 1. check the motor harness, replace it, if defective. 2. replace the smps, if necessary. 7.3.9 no power ?description when system power is turned on, all lamps on the operator panel do not come on. check and cause solution 1. check if the power input and smps output are normal. 2. check the inferiority of led-panel on the front-cover if the led of panel does not appear after normal warming- up. 1. replace the power supply cord or smps. 2. replace the control board. 3. replace the led-panel.
7-16 troubleshoo ting samsung electronics training manual 7.3.10 vertical line getting curved ?description when printing, vertical line gets curved. check and cause solution 1. if the supply of +24v is unstable in the main control board linking with lsu, check drive by dcu mode : lsu check -05- lsu motor on. 1. replace lsu. 2. replace the main control board.
7-17 samsung electronics troubleshoo ting training manual 7.4 toner cartridge service it is not guaranteed for the default caused by using other toner cartridge other than the cartridge supplied by the samsung electronic or caused by non-licensed refill production. 7.4.1 precautions on safe-keeping of toner cartridge excessive exposure to direct light more than a few minutes may cause damage to the cartridge. 7.4.2 service for the life of toner cartridge if the printed image is light due to the life of the toner, you can temporarily improve the print quality by redistributing the toner(shake the toner cartridge), however, you should replace the toner cartridge to solve the problem thoroughly. 7.4.3 redistributing toner when toner is low, faded or light areas may appear on a printed page. you may be able to temporarily improve the print quality by redistributing the toner. the following procedures may allow you to finish the current print job before replacing the toner cartridge. 1) grasp the front cover and pull it toward you to open. 2) remove the toner cartridge from the printer 3) gently shake the toner cartridge from side to side five or six times to redistribute the toner. 4) reinsert the toner cartridge into the printer. ensure that the toner cartridge snaps into place. 5) close the front cover. make sure that the cover is securely closed. 1.7 note : avoid reaching too far into the printer. the fusing area may be hot. to prevent damage to the toner cartridge, do not expose it to light for more than a few minutes. note : if the toner gets on your clothing, wipe it off with a dry cloth and wash clothing in cold water. hot water sets toner into fabric.
7-18 troubleshoo ting samsung electronics training manual 7.4.4 signs and measures at poor toner cartridge fault signs cause & check solution light image and partially blank image (the life is ended.) toner contamination ?the printed image is light or unclean and untidy. ?some part of the image is not print- ed. ?periodically a noise as "tick tick" occurs. ?toner is fallen on the papers periodi- cally. ?contaminated with toner on prints part- ly or over the whole surface. 1. if the image is light or unclean and untidy printed image - shake the developer and then recheck. (1)ng : check the weight of the developer (2)ok : lack of toner, so the life is nearly closed. 2. some part of image is not printed - shake the develop- er and then recheck. (1)ng : check the weight of the developer and clean the lsu window with a cotton swab, then recheck. (2)ok : lack of toner, so the life is nearly closed. 3. periodically a noise as "tick tick" occurs - measure the cycle and the weight of the developer. 4. white vertical stripes on the whole screen or partly : check the weight of the developer. 1. toner is fallen on the paper periodically. (1)check the cycle of the falling of the toner. (2)check the appearance of both ends of the developer opc drum. 2.the center of the printed mat- ter is contaminated with toner. (1)check whether foreign sub- stances or toner are stuck to the terminal (contact point) of the developer. (2)check whether the state of the terminal assembly is normal. 1. all of 1, 2, 3 above- if it become better by shaking, replace with a new developer after 35.3-100 sheets in the closing state of the life span. 2. in case of 2- if it becomes better after clean- ing the lsu window, then the developer is normal. (because of foreign substance on the lsu window, the image has not been printed partly.) 3. in case of 3- if the cycle of noise is about 2 seconds, the toner inside the developer has been nearly exhausted.( purchase and replace with a new developer after using about 200 sheets at the point of occurrence) 4. in case of 3- this is a phenomenon caused by lack of toner, so replace with a new developer. 1. if both ends of the opc drum are contaminated with toner: check the life of the developer. 2. check whether it could be recy- cled. 3. if it cannot be recycled: replace the developer. digital printer digital printer digital printer digital printer digital printer
7-19 samsung electronics troubleshoo ting training manual fault signs cause & check solution white black spot recycled product ?light or dark black dots on the image occur periodically. ?white spots occur in the image period- ically. ?poor appearance of the developer. ?unclean and rough printouts. ?bad background in the image. 1. if light or dark periodical black dots occur, this is because the developer rollers are contami- nated with foreign substance or paper particles. (1)37.7mm interval : charged roller (2)75.5mm interval : opc cycle 2. if white spots occur in a black image at intervals of 75.5mm, or black spots occur else- where, the opc drum is dam- aged or foreign substance is stuck to the surface. 3. if a black and white or graphic image is partially broken at irregular intervals, the transfer roller's life has been expired or the transfer voltage is abnor- mal. 1. poor appearance of the devel- oper. (1)check the damage to label and whether different materi- als are used. (2)check the appearance of parts of the developer, such as frame, hopper. 2. unclean and rough printouts. (1)check whether foreign sub- stance or toner are stuck to the terminal (contact point) of the developer. (2)check whether the state of the terminal assembly is nor- mal. 1. in case of 1 above - run opc cleaning mode print 4-5 times repeatedly to remove. especially check foreign sub- stance on the opc surface, then remove them with a clean gauze moistened with ipa(isopropyl alcohol) not to damage opc if necessary. never use usual alcohol. 2. in case of 2 if they are not disappeared by running opc cleaning mode print 4-5 times. : at intervals of 37.7mm - replace the developer. : at intervals of 75.5mm - remove foreign substance. : broken image - replace the developer according to careless- ness. 3. in case of 3 - exchange the transfer roller because the life of the transfer roller in use has been expired. (check the transfer volt- age and readjust if different.) 1. in case of 1 - (1)if there is an evidence of disas- sembling the developer. (2)if materials other than normal parts of the developer are added or substituted. 2. in case of 2 - if there are any abnormals in connection with the situation of 1. (1)it occurs when the developer is recycled over 2 times. (2)if toner nearly being expired are collected to use, it is judged as the recycled devel- oper. digital printer digital printer digital printer digital printer digital printer
7-20 troubleshoo ting samsung electronics training manual 7.5 bad environment of the software 7.5.1 the printer is not working (1) ?description while power turned on, the printer is not working in the printing mode. check and cause solution 1. run self-test mode : turn the power on while pressing the test printing button for 2 or 3 seconds before printing works. 2. check if the pc and the printer is properly connected and the toner cartridge installed. 3. printing is nor working in the windows. 4. check if the printer cable is directly connected to periph- eral devices 1.check the power of the printer and perform the self- test. if the test printing works, that means no prob- lems in the printer itself. if the test printing does not work, that means bad functioning of the printer(not because of software). perform dcu to check the error status. 2. replace the printer cable. if the problems not solved even after the cable replaced, check the amount of the remaining tone. (refer to toner cartridge service 7.4) 3. check if the connection between pc and printer port is proper. if you use windows, check if the printer dri- ver in the controller is set up. if the printer driver is properly set up, check in which program the printing is not working. the best way to find out is to open the memo pad to check the function of printing. if it is not working in a certain program, adjust the setup the program requires. sometimes, the printout is normal within the windows basic programs, but it's not work- ing in a particular program. in such case, install the new driver again. if not working in the windows basic program, check the setup of the port of cmos is on ecp. and check the address of irq 7 and 378 4. if the scanner needs to be connected to the printer, first the remove the scanner from the pc to see if the printer is properly working alone.
7-21 samsung electronics troubleshoo ting training manual 7.5.2 the printer is not working (2) ?description after receiving the printing order, no response at all or the low speed of printing occurs due to wrong setup of the environment rather than malfunction of the printer itself. check and cause solution 1. secure more space of the hard disk. 2. printing error occurs even if there is enough space in the hard disk. 3. check the parallel-port-related items in the cmos setup. 4. reboot the system to print. 1. not working with the message 'insufficient printer memory' means hard disk space problem rather than the ram problem. in this case, provide more space for the hard disk. secure more space using the disk utilities program. 2. the connection of the cable and printer port is not proper. check if the connection is properly done and if the parallel port in cmos is rightly set up. 3. as a printer port, select ecp or spp among spp(normal), ecp, and epp modes(increase print- ing speed) spp normal mode support 8-bit data transfer, while ecp mode transfer the 12-bit data. 4. if the regular font is not printing, the cable or the printer driver may be defective. turn the pc and printer off, and reboot the system to print again. if not solved, double-click the printer in my computer if the regular fonts are not printed this time again. the cable must be defective so replace the cable with new one.
7-22 troubleshoo ting samsung electronics training manual 7.5.3 abnormal printing ?description the printing is not working properly even when the cable has no problem. (even after the cable is replaced) if the printer won't work at all or the strange fonts are repeated, the printer driver may be defec- tive or wrong setup in the cmos setup. check and cause solution 1. set up the parallel port in the cmos setup. 2. printer driver error. 3. error message from insufficient memory. (the printing job sometimes stops or due to insufficient virtual memory, but it actually comes from the insuffi- cient space of the hard disk.) 1. select spp(normal) or ecp lpt port the among ecp, epp or spp in the cmos setup. 2. check the printer in my computer.(to see if the printer driver is compatible to the present driver or delete the old driver, if defective and reinstall the new driver) 3. delete the unnecessary files to secure enough space of the hard disk and start printing job again.
7-23 samsung electronics troubleshoo ting training manual 7.5.4 spool error ?description to spool which stands for "simultaneous peripheral operations online" a computer document or task list (or "job") is to read it in and store it, usually on a hard disk or larger storage medium so that it can be printed or otherwise processed at a more convenient time (for example, when a printer is finished printing its current document). check and cause solution 1. insufficient space of the hard disk in the directory assigned for the basic spool. 2. if the previous printing error not solved. 3. when expected to collide with other program. 4. when an application program or the printer driver is damaged. 5. when some files related to os are damaged or virus infected. 6. memory is less than suggested one. 1. delete the unnecessary files to provide more space to start printing job. 2. if there are some files with the extension name of ****.jnl, delete them and reboot the windows to restart printing job. 3. shut down all other programs except the current one, if possible. 4. delete the printer driver completely and reinstall it. 5 after rebooting the computer, check for viruses, restore the damaged files and reinstall the program to do the printing job. 6. add up enough memory to the pc. how to delete the data in the spool manager. in the spool manager, the installed drivers and the list of the documents waiting to be printed are shown. select the document to be deleted and check the delete menu. if you intend to delete the current document being printed, the data being transferred to the printer will be put out and then the document is removed. before choosing the document, the menu is still inactive. or put the document out of the list and repeat the routine as in the above or finish the spool manager.
8 8 8-1 samsung electronics exploded view & parts list training manual 8. exploded views and parts list 5-1. main assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page(5-2) 5-2. frame unit assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . page(5-4) 5-3. drive unit assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . page(5-7) 5-4. fuser unit assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . page(5-8) 5-5. cassette unit assembly . . . . . . . . . . . . . . . . . . . . . . . . page(5-10)
8-2 exploded view & parts list samsung electronics training manual 8.1 main assembly 0 9 6 7 8 2-2 2-3 2-4 2-5 2-6 2-6 16 16-1 16-2 5 2-1 2-7 2-10 1 2 10 17 11-1 11 11-2 11-3 11-4 11-5 11-3 12 4 13 14-1 14-2 14-3 14 14-4 (toner cartridge) 3 15
8-3 samsung electronics exploded view & parts list training manual no. description sec.code q?y sa remark 0 set 1 ela unit-frame assy 110v jc96-02732a 1 @ 2 ela hou-cover top jc97-01748a 1 @ 2-1 lens led-led jc67-00026a 1 @ 2-2 cover-top jc63-00102a 1 @ 2-3 cover-rear jc63-00101a 1 @ 2-4 pmo-stacker_rx jc72-00973a 1 @ 2-5 pmo-bushing_f/down jc72-00387a 1 @ 2-6 pmo-sub stacker jc72-01001a 1 @ 2-7 spring-key 6107-001169 1 @ 2-8 key-on line jc64-00039a 1 @ 2-9 screw-tiptite 6003-000264 2 3 plate-channel jc61-00606a 1 @ 4 mea unit-toner cartridge 1710 jc97-01744a 1 @ 5 ela hou-fuser 220v jc96-02660a 1 @ 6 unit-lsu jc59-00018a 1 @ 7 pba sub-led panel jc92-01439a 1 @ 8 cover pcb-pcb jc63-00104a 1 @ 9 cbf harness-lsu 1400 jc39-00242a 1 @ 10 ela hou-rx drive 1400 jc96-02733a 1 @ 11 mea etc-cover front jc97-01746a 1 @ 11-1 cover-front jc63-00103a 1 @ 11-2 adjust-manual l jc70-00302a 1 @ 11-3 adjust rack-manual jc70-00304a 1 @ 11-4 gear-rack_pinion jc66-00387a 1 @ 11-5 adjust-manual r jc70-00303a 1 @ 11-6 screw-tiptite 6003-000264 3 12 mea etc-cassette 1400 jc97-01750a 1 @ 13 pba-controller spl tbd 1 @ 14 mea etc-shield engine jc96-02663a 1 @ 14-1 cbf harness-main_smps jc39-00240a 1 @ 14-2 smps-hvps hphr(110v) jc44-00045a 1 @ 110v 14-3 bracket-inlet jc61-00601a 1 @ 14-4 shield-engine jc63-00107a 1 @ 14-5 screw-tiptite 6003-000264 6 14-6 screw-tiptite 6003-000119 2 14-7 screw-tiptite 6003-000301 1 15 fan-dc jc31-00027a 1 @ 16 16-1 roller-transfer roller jc66-00528a 1 @ 16-2 gear-transfer jc66-00395a 1 @ 17 cbf harness-motor jc39-00241a 1 @ main assembly parts list sa : service available o : service available x : service not available
8-4 exploded view & parts list samsung electronics training manual 8.2 frame unit assembly 0 1 2 4 3 5 6 7 12 6 9 53 9 51 13 14 15 16 17 57 18 19 20 20 21 22 23 24 25 26 37 31 27 28 29 29 30 58 58-1 58-2 58-3 58-4 58-5 58-6 58-6 58-4 40 41 56 42 44 53 45 46 47 48 59 59-1 59-2 59-3 59-4 50 52 52 54 55 11 10 8 35 36 transfer roller 38 39 43 32 34 33 49 49-3 49-2 49-1
8-5 samsung electronics exploded view & parts list training manual no. description sec.code q?y sa remark 0 ela unit-frame assy 110v jc96-02732a 1 @ 1 frame-base jc61-00579a 1 @ 2 guide-tr jc61-00607a 1 @ 3 plate-saw jc61-00604a 1 @ 4 guide-tr rib jc61-00594a 1 @ 5 gear-exit f/down jc66-00038a 1 @ 6 mec-bearing,exit jc75-10529a 2 @ 7 roller-exit_f/down jc66-00378a 1 @ 8 spring-exit_f/down 6107-001163 1 @ 9 pmo-gear_exit_drv16 jc72-00143a 2 @ 10 holder-exit_f/down jc61-00582a 4 @ 11 pmo-roller_exit,main jc72-41081a 4 @ 12 pmo-roller_exit,fr jc72-41082a 4 @ 13 mec-terminal jc75-00049a 4 @ 14 ipr-terminal con jc70-00312a 3 @ 15 ipr-terminal cr jc70-00313a 1 @ 16 housing-terminal jc61-00592a 1 @ 17 pmo-locker cst jc72-00983a 1 @ 18 pmo-actuator cvr open jc72-00974a 1 @ 19 pmo-plate guide deve_r jc72-00985a 1 @ 20 spring-guide deve jc61-00038a 2 @ 21 ipr-ground_roller idle jc70-00315a 1 @ 22 pmo-plate guide deve_l jc72-00984a 1 @ 23 pmo-actuator feed jc72-00976a 1 @ 24 pmo-actuator empty jc72-00975a 1 @ 25 pmo-actuator manual jc72-00977a 1 @ 26 ipr-ground earth tr jc70-00309a 1 @ 27 spring-tr_r 6107-001162 1 @ 28 roller-feed roller1 jc66-00526a 1 @ 29 pmo-bushing tx jc72-00382a 5 @ 30 roller-feed jc61-00347a 1 @ 31 spring-act,manual 6107-001165 1 @ 32 ipr-earth transfer jc70-00307a 1 @ 33 holder-ptl jc61-00583a 1 @ 34 lens-ptl jc67-00027a 1 @ 35 bush-tr_l jc61-00588a 1 @ 36 spring-tr_l jc61-00047a 1 @ 37 spring-act_feed 6107-001164 1 @ 38 pmo-bushing tr_l jc72-00102a 1 @ 39 ipr-ground fuser jc70-00310a 1 @ 40 shaft-feed idle jc66-00527a 1 @ 41 bush-feed idle jc61-00585a 1 @ 42 spring-feed idle jc61-70958a 1 @ 43 ipr-p_ground_drive2 jc70-00335a 1 @ 44 spring-cam pick-up 6107-001170 1 @ 45 cam-pick_up jc66-00377a 1 @ 46 ipr-ground drive jc70-00308a 1 @ 47 solenoid-hb (pick-up) jc33-00009a 1 @ 48 solenoid-hb (manual) jc33-00010a 1 @ frame unit assembly parts list sa : service available o : service available x : service not available
8-6 exploded view & parts list samsung electronics training manual frame unit assembly parts list(cont.) sa : service available o : service available x : service not available no. description sec.code q?y sa remark 49 1@ 49-1 pmo-gear pick_up b jc72-00980a 1 @ 49-2 pmo-gear pick_up a jc72-00979a 1 @ 49-3 spring-pick_up gear 6107-001167 1 @ 50 bracket-feed jc61-00602a 1 @ 51 ipr-ground tr jc70-00311a 1 @ 52 shapt-feed jc66-00398a 1 @ 53 ring-cs 6044-000001 3 @ 54 gear-feed 2 jc66-00394a 1 @ 55 gear-idle 23 jc66-00396a 1 @ 56 guide-paper jc61-00718a 1 @ 57 rmo-rubber_foot jc73-00027a 2 @ 58 1@ 58-1 bush-pick_up_l jc61-00586a 1 @ 58-2 shaft-pick_up jc66-00399a 1 @ 58-3 stopper-pick_up jc61-00593a 2 @ 58-4 pmo-idle pick_up jc72-00982a 2 @ 58-5 sponge-roiller pick up jc72-01231a 1 @ 58-6 bush-pick_up_r jc61-00587a 1 @ 58-7 housing-pick_up jc61-00591a 1 @ 59 59-1 gear-feed 1 jc66-00393a 1 @ 59-2 pmo-collar_spring jc72-00978a 1 @ 59-3 spring-clutch 6107-001164 1 @ 59-4 pmo-hub clutch jc72-00981a 1 @
8-7 samsung electronics exploded view & parts list training manual 8.3 drive unit assembly 0 1 2 3 4 4 5 6 7 8 9 harness-motor 5 no. description sec.code q?y sa remark 0 ela hou-rx drive 1400 jc96-02733a 1 @ 1 bracket-gear 1400 jc61-00598a 1 @ 2 gear-fuser drv jc66-00388a 1 @ 3 gear-rdcn z132/19 jc66-00391a 1 @ 4 gear-pick_up drv jc66-00389a 2 @ 5 ring-e 6044-000231 2 @ 6 bracket-motor 1400 jc61-00599a 1 @ 7 gear-rdcn z7128 jc66-00390a 1 @ 8 gear-rdcn z7322 jc66-00392a 1 @ 9 motor step-7.5 jc31-00028a 1 @ drive unit assembly parts list sa : service available o : service available x : service not available
8-8 exploded view & parts list samsung electronics training manual 8.4 fuser unit assembly 0 1 2 3 4 5 32 32 6 33 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 31 22 23 24 25 26 27 30 28 29
8-9 samsung electronics exploded view & parts list training manual no. description sec.code q?y sa remark 0 ela hou-fuser 110v jc96- 1 1 cover-fuser jc63-00105a 1 2 holder-plate claw jc61-00584a 4 3 spring etc-claw jc61-00064a 4 4 pmo-roller exit jc72-60059a 2 5 spring-exit f_up jc61-70976a 2 6 thermostat-150 jc47-00005a 7 pmo-gear_exit_drv16 jc72-00143a 1 8 gear-idle 23 jc66-00396a 1 9 ring-cs 6044-000001 1 10 gear-rdcn 2515 jc66-00397a 1 11 ipr-electrode_lamp jc70-00275a 1 12 electrode-wire_l jc70-00450a 1 13 thermister-ntc hf 1404-001298 1 14 electrode-wire_r jc70-00449a 1 15 cbf harness-fuser(1) jc39-00239a 1 16 gear-fuser_htn jc66-00564a 1 17 bush-hr_l jc61-00589a 1 18 npr-roller_heat jc66-00601a 1 19 bush-hr_r jc61-00590a 1 20 lamp-halogen(110v) 4713-001155 1 110v 21 roller-exit f_up jc66-00380a 1 22 mec-roller_pr(1400) jc66-00600a 1 23 bearing-pressure jc66-10901a 2 24 spring-pr(1400) 6107-001168 2 25 pmo-bushing tx jc72-00382a 3 26 holder-actuator jc61-00581a 1 27 pmo-actuator_exit jc72-00987a 1 28 ipr-frame_fuser jc70-00317a 1 29 guide-input jc61-00595a 1 31 rmo-rubber_exit jc73-00017a 2 33 ?abel(p)-caution, hot_fuser jc68-30928d 1 30 spring etc-act_exit 6107-001165 1 32 nut-hexagon 6021-000222 5 ?? new-claw assy tbd ?? plate-claw jc61-00605a 4 fuser unit assembly parts list sa : service available o : service available x : service not available
8-10 exploded view & parts list samsung electronics training manual 8.5 cassette unit assembly 0 1 2 3 4 5 5 6 7 8 9 10 11 12 13 14 15 16 17 18
8-11 samsung electronics exploded view & parts list training manual no. description sec.code q?y sa remark 0 cassette tbd 1 1 frame-cassette jc61-00578a 1 @ 2 pmo-extension large jc72-00970a 1 @ 3 pmo-extension small jc72-00971a 1 @ 4 plate-knock_up jc61-00603a 1 @ 5 spring-knock_up 6107-001166 2 @ 6 holder-pad jc61-00580a 1 @ 7 spring-friction pad jc61-70911a 1 @ 8 roller-idle feed jc66-00529a 2 @ 9 spring-feed 6107-001047 2 @ 10 pmo-plate_locker jc72-00972a 1 @ 11 spring-locker jg61-70531a 1 @ 12 adjust-cassette_l jc70-00300a 1 @ 13 adjust-cassette_r jc70-00301a 1 @ 14 gear-pinion jg66-40003a 1 @ 15 indicator-lever indicator jc64-00040a 1 @ 16 rpr-friction pad jc73-00140a 1 @ 17 ipr-plate pad jc70-00314a 1 @ 18 rpr-pad cassette jc73-00141a 3 @ cassette unit assembly parts list sa : service available o : service available x : service not available
9 9 9-1 samsung electronics block diagram training manual 9. block diagram 9.1 pcl model fuser ass?y power cord in-let f. g thermistor to controller main motor c-solenoid c-solenoid-mp scf (option) ieee1284 interface usb2.0 net2270 crystal 14.74 mhz freq. spread video clock voltage detector motor driver power on reset controller block smps block heater-ac +24v +5v +3.3v gnd crystal 12mhz freq. spread eeprom feed-sensor p/empty-sensor mp-sensor main clock exit-sensor thvpwm blaspwm mhvpwm +24v cover-open switch panel b?d ptl lsu + + + + fan 2 led 1key font rom 16mb flash memory (2mb) sdram (8mb) spgpm arm946es hvps block mhv opc gnd supply dev thv
9-2 block diagram samsung electronics training manual 9.2 spl model mhvpwm thvpwm f. g exit-sensor feed-sensor p/empty-sensor mp-sensor in-let - + gnd thv-rd biaspwm thv_ea heater-thermistor +24v +5v +3.3v fan power cord crystal 12mhz main clock power on reset smps + main 26p cpu jupiter 4 +24v main motor c-clutch usb heater-ac smps part's cover open sw cn8 cn8 cn11 cn6 cn1 cn3 con4 con1 cn2 cn9 hvps part's voltage detector ptl lsu panel b ? d 2 led 1key mhv opc gnd supply dev thv fuser ass ? y m-clutch motor dr part's flash memory 0.5mb (128kx32bits) arm7 90mhz video clock ld sscg
1 1 0 0 10-1 samsung electronics connection diagram training manual 10. connection diagram 10.1 pcl model host computer ieee1284 comopatiable cable j1 pcl main board fr-4, 4layer 4p in connector for usb usb cable cn3 1 2 1 2 thermistor 1 2 3 4 1 2 3 4 motor cn5 cn12 dcu cn1 +3.3v dcu_data 1 2 3 4 1 2 3 4 dcu_clk gnd 1 2 3 4 5 6 7 8 9 10 11 1 2 3 4 5 1 2 3 4 5 6 +24vs gnd *p mo to r *l re ady ext_ cl k *h syn c +3.3v *l d_ o n vd o gnd lsu polygon motor ld diode le d_ err o r le d_ dat a *k ey_d emo 1 2 +3.3v ptl 1 2 cn9 cn6 cn5 smps hvps +3.3v gnd +3.3v +3.3v gnd +3.3v +3.3v gnd +3.3v +24v gnd +24v +24vs +24v gnd +24v +24v gnd +24v *e xit se nso r 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 *f u ser o n +24vs *b ia s pw m *m an ua l se nso r cn5 gnd 1 2 +24v m_cl utch 1 2 cn7 1 2 +24v c_clutch cassette clutch ptl led array manual clutch 1 2 cn8 fan panel *t h v pw m 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 *t h v ea nb le thv read *m hv p w m fan a b the rm the rm2 a/ b/ 36 pi n
10-2 connection diagram samsung electronics training manual 10.2 spl model +24vs gnd *p mo to r *l re ady ext_ cl k *h syn c +3.3v *l d_ o n vd o gnd lsu polygon motor ld diode le d_ err o r le d_ dat a *k ey_d emo +3.3v ptl 1 2 the rm the rm2 1 2 1 2 thermistor motor dcu host computer a a/ 1 2 3 4 1 2 3 4 b b/ cn9 cn6 cn7 cn8 cn5 cn1 cn5 cn12 cn3 smps +3.3v gnd +3.3v +3.3v gnd +3.3v +3.3v gnd +3.3v +24v gnd +24v +24vs +24v gnd +24v +24v gnd +24v *e xit se nso r *f u ser o n hvps +24vs *bia s pw m spl main board fr-4, 2layer 4p in conn-ector fo r usb usb cable +3.3v dcu_data 1 2 3 4 1 2 3 4 dcu_clk gnd *ma nu a l se nso r cn5 gnd +24v m_clutch 1 2 +24v c_clutch 1 2 fan panel *t h v pw m *t h v ea nb le thv read *mh v p w m fan 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 1 2 3 4 5 6 7 8 9 10 11 1 2 3 4 5 1 2 3 4 5 6 1 2 1 2 1 2 spl main board fr-4, 2layer ptl led array manual clutch cassette clutch
1 1 11-1 samsung electronics schematic diagrams repair manual 11. schematic diagrams 11.1 pcl main circuit diagram (1/7)
11-2 schematic diagrams samsung electronics repair manual pcl main circuit diagram (2/7)
11-3 samsung electronics schematic diagrams repair manual pcl main circuit diagram (3/7)
11-4 schematic diagrams samsung electronics repair manual pcl main circuit diagram (4/7)
11-5 samsung electronics schematic diagrams repair manual pcl main circuit diagram (5/7)
11-6 schematic diagrams samsung electronics repair manual pcl main circuit diagram (6/7)
11-7 samsung electronics schematic diagrams repair manual pcl main circuit diagram (7/7)
11-8 schematic diagrams samsung electronics repair manual 11.2 spl main circuit diagram (1/5)
11-9 samsung electronics schematic diagrams repair manual spl main circuit diagram (2/5)
11-10 schematic diagrams samsung electronics repair manual spl main circuit diagram (3/5)
11-11 samsung electronics schematic diagrams repair manual spl main circuit diagram (4/5)
11-12 schematic diagrams samsung electronics repair manual spl main circuit diagram (5/5)
11-13 samsung electronics schematic diagrams repair manual 11.3 hvps circuit diagram (1/2) r305 mgr1/2w 50m 5v q201 a708-y 4 r204 47k d202 d1nl20u tnr201 5n221k thv-pwm ? c210 6kv 221 r205 22k it301 q302 c2383 6 it201 it-01 c303 103 7 thv-ea ? d206 6kv r304 1/4w 4.7 zd301 2.7v c304 3kv 151 1 ? d205 6kv r212 1/2w 100k 5 q301 c945c-y ? c206 104 r209 100k d302 4kv c204 103 r306 150kf 2 d303 1n4148 r206 180k-f con2-17 7 r207 330k-f thv thv 50k r307 150k thv-sen r213 mgr1/2w 100mf 4 thv-read con2-18 6 c302 103 it-01 1 d301 d1nl20u r303 470 q202 c945c-y c201 473 5v index 50k c307 473 ? c202 102 d305 1n4148 24vs 5v c212 2kv 221 d201 1n4148 c306 473 tnr203 5n431k zd201 2.7v thv-sen r208 10k r201 430 tnr202 5n431k r211 1/4w 4.7 r210 5.6k r302 470k 5 c205 473 + - u102-a ka324 3 2 1 + - u102-b ka324 5 6 7 4 11 c305 104 c208 681 2 r202 100 c211 6kv 221 d203 d1nl20u d204 6kv d304 1n4148 con2-16 c203 681 r301 1k c207 103 24vs c301 104 r309 n.u r308 1k r203 2k ? 5v c209 6kv 221 q203 c2383
11-14 schematic diagrams samsung electronics repair manual hvps circuit diagram (2/2) d503 d1nl20u 5v r413 1/2w 100k c407 103 c505 104 d402 1n4148 opc 1 c402 102 r505 10k + c113 25v 47uf mhv-pwm ? r410 1/2w 560k bias-sen r513 1/2w 50k r407 100k zd401 2.7v 6 zd402 2.7v r501 47k r408 470 ? gnd zd501 2.7v c405 104 r404 10k q402 c945c-y 7 d401 1n4148 d501 1n4148 supply r512 30kf ? bias-sen 1 + c112 50v 10uf it401 c504 472 r515 mgr1/2w 15mf c502 102 5 c506 103 r510 1/2w 1.8m out 5v zd503 200v c501 473 r508 470 c503 681 r502 22k q403 c2316 + - u102-d ka324 12 13 14 in r504 10k con2-20 r503 330kf c508 103 r409 1/4w 4.7 q501 a708-y zd403 130v 2 d404 4kv r401 47k + - u102-c ka324 10 9 8 4 24vs 5v c510 3kv 101 r402 22k r412 30kf c406 103 mhv-sen con2-19 5 d502 1n4148 r405 10k d504 4kv q401 a708-y c409 3kv 471 r406 5.6k c404 472 q503 c2316 2 5v dev 20k mhv 20k r511 mgr1/2w 10mf c509 3kv 471 mhv-sen dev q502 c945c-y 4 24vs 5v ka7805 r506 5.6k d403 d1nl20u mhv ? it-01 r411 mgr1/2w 20mf u103 it501 r514 1/2w 50k zd502 2.7v r509 1/4w 10 ? r507 100k c410 221 c507 103 ? 6 24vs c403 331 bias-pwm 7 c401 473 c408 103 it-01 r414 mgr1/2w 15mf r403 1.5m
11-15 samsung electronics schematic diagrams repair manual 11.4 smps circuit diagram c110 nu 3 c105 50v 33uf d6 d1nl20u con2-22(led-data) c8 471 u101 tl431 2 3 1 r5 2w 100k 4 f101 con2-16(thv-pwm) 9 dss-401m c7 50v 33uf no marking resistor 1/8w-j(5%) c6 1kv 103 con2-25(fuser-on) r106 1/2w 3.3k c101 1kv 102 con2-14,16(+24vs) r108 22 5 eer2828 ar1 r107 1/2w 3.3k con2-23(key-demo) r11 1w 47 fusible f1 250v 5a con2-18(thv-read) vin con2-26(exit) r112 5.6k-f inlet1 r7 6.8k sw1 sw spst r6 30 con2-24(fan) nu con2-25(*fuser-on) gnd con2-19(mhv-pwm) gnd d103,104 40v 3a*2 c104 nu con2-20(bias-pwm) con2-13,14 d5 uf4007 r111 1.8k-f 1 con1 1 2 r113 nu source 10 +24vs f2 250v 2a drain c103 35v 47uf pt1 c106 1kv 102 11 r8 680 con2-10,11,12 str-g6353 r101 22 c10 630v 333 lf2 2003 con2-7,8,9 ocp/fb c2 222mad pwm control dgnd r110 220 r2 1/4w75k d101,102 200v 3a*2 u2 th1 sck-054 +3.3v1.0a r9 1w0.6 r12 1w 180 fusible r3 1/4w75k dss-401m r105 1/2w 3.3k c4 104 c3 222mad bd1 sw2 lf1 1007 con2-1,2,3 c108 50v 1uf c12 332mad ar2 l1 300uh +24v2.0a 2 c107 10v 1000uf u1 bta12-600b 8 c1 224 1 c11 50v 104 pc102 tlp3061s l101 10uh c9 nu 1 r1 1/2w 560k r109 nu c5 400v 100uf r104 1/2w 3.3k 2 ss-5gl2 con2-15(manual) 6 r114 1/2w 1.5k con2-4,5,6 tnr1 10d561k r102 1/2w 3.3k 3 pc101-b 817m-b 3 -+ d1,2,3,4 600v2a*4 c109 10v 470uf con2-21(led-error) c102 35v 1000uf r13 1/4w 22 4 pc101-a 817m-b r4 1/4w75k r103 1/2w 3.3k con2-17(thv-ea)
11-16 schematic diagrams samsung electronics repair manual 11.5 other pba circuit diagrams r115 150 r117 150 con2-24(fan) 1 2 r118 47k 2 op102 itr-8406s con4 3 c111 104 con2-15(manual) 35301-0350 35303-0550 5 con2-23(key-demo) r120 5.6k 4 con2-26(exit) r119 2.2k 3 3 24vs 2 2 1 4 con2-21(led-error) op101 itr-8406s 13 3.3v d105 1n4003 1 r116 47k con3 3.3v con2-22(led-data) q101 ksc1008-y 4
1 . s e r v i c e e r r o r i t e m p h e n o m e n o n m e a s u r e m e n t d c u f u s e r e r r o r o n l i n e / e r r o r a n d t o n e r s a v e a l t e r n a t e l y l i g h t r e d a n d g r e e n f o r 1 s e c o n d . c h e c k t h e f u s e r a s s e m b l y , c o n t r o l l e r a n d s m p s a n d a c w i r e o p e n f u s e r e r r o r ( d c u : 6 0 ) o n l i n e / e r r o r a n d t o n e r s a v e a l t e r n a t e l y l i g h t o r a n g e a n d g r e e n f o r 1 s e c o n d . c h e c k t h e f u s e r a s s e m b l y , c o n t r o l l e r a n d s m p s o v e r h e a t e r r o r ( d c u : 6 8 ) o n l i n e / e r r o r a n d t o n e r s a v e a l t e r n a t e l y l i g h t r e d a n d g r e e n f o r 4 s e c o n d s . c h e c k t h e f u s e r a s s e m b l y , c o n t r o l l e r , s m p s a n d a c w i r e l o w h e a t e r r o r ( d c u : 6 2 ) l s u e r r o r o n l i n e / e r r o r a n d t o n e r s a v e a l t e r n a t e l y l i g h t g r e e n a n d g r e e n f o r 1 s e c o n d . c h e c k t h e l s u , c o n t r o l l e r a n d h a r n e s s l s u n o t r e a d y e r r o r p m o t o r e r r o r ( d c u : 9 5 ) m a i n m o t o r s t o p s r i g h t a f t e r p a p e r i s f e e d e d . t h e n o n l i n e / e r r o r a n d t o n e r s a v e a l t e r n a t e l y l i g h t g r e e n a n d g r e e n f o r 4 s e c o n d s . c h e c k t h e l s u , c o n t r o l l e r a n d h a r n e s s l s u n o t r e a d y e r r o r h s y n c e r r o r ( d c u : 9 6 ) h u m m i n g b i r d e r r o r t e s t
2 . p a p e r j a m 3 . a ?? i t e m p h e n o m e n o n m e a s u r e m e n t d c u p a p e r j a m o n l i n e / e r r o r l i g h t s r e d c h e c k t h e f e e d c l u t c h o p e r a t i o n a n d c o n t r o l l e r j a m 0 ( d c u : 7 1 ) o n l i n e / e r r o r l i g h t s r e d c h e c k t h e f e e d s e n s o r a n d c o n t r o l l e r j a m 1 ( d c u : 7 2 ) o n l i n e / e r r o r l i g h t s r e d c h e c k t h e e x i t s e n s o r , f u s e r a s s ' y a n d c o n t r o l l e r j a m 2 ( d c u : 7 3 ) i t e m p h e n o m e n o n m e a s u r e m e n t d c u c o v e r o p e n o n l i n e / e r r o r l i g h t s r e d c h e c k t h e c o v e r o p e n s w i t c h ( d c u : 6 4 ) p a p e r e m p t y o n l i n e / e r r o r l i g h t s r e d c h e c k i f t h e r e a r e p a p e r s i n c a s s e t t e . ( d c u : 7 0 )
d c u f u n c t i o n t a b l e f o r m l - 1 7 1 0 s e r i e s n o . f u n c t i o n e n t e r u p / d o w n s t o p r e m a r k 0 0 m o t o r m o t o r r u n m o t o r s t o p 0 1 m h v m h v o n m h v o f f - 1 5 5 0 v 0 2 t h v ( - ) t h v n e g a t i v e o n t h v n e g a t i v e o f f 0 3 t h v ( + ) t h v o n t h v o f f + 1 3 0 0 v 0 4 d e v d e v o n s u p p l y d e v d e v o f f 0 : - 6 3 0 v 0 : - 4 3 0 v 0 5 l s u l s u r u n ? ? ? o n o f f r e a d y l s u s t o p 0 6 p i c k u p p i c k u p o n p i c k u p o f f 0 7 p e m p t y ? ? ? p a p e r e m p t y 0 8 s e n s o r ? ? ? e x i t f e e d 0 9 c o v e r ? ? ? c o v e r o p e n 1 0 f u s e r f u s e r o n f u s e r o f f 1 1 h o t b u r n h o t b u r n o n 1 2 c l e a n p r i n t c l e a n p r i n t i n g 1 3 t h v r e f e r e n c e ? ? ? l o w a d e q u a t e h i g h 1 4 p t l p t l o n p t l o f f 1 5 f a n f a n o n f a n o f f 1 6 m a n u a l p i c k u p m a n u a l p i c k u p o n m a n u a l p i c k u p o f f 1 7 m a n u a l s e n s o r ? ? ? m a n u a l s e n s o r
2003. 01
? samsung electronics co.,ltd. january 2003 printed in korea. version no. : 1.00 code : jc-0084a this service manual is also provided on the web, the itself system f samsung electronics co., ltd. http://itself.sec.samsung.co.kr electronics

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