Samsung Printer Ml 1200 Users Manual
ML-1200 to the manual 0f1218d5-33e8-4988-8a4f-103324f6222e
2015-01-23
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LASER PRINTER ML-1200 Series ML-1210 / ML-1250 / ML-1220M SERVICE LASER PRINTER Manual CONTENTS 1. Precautions 2. Specifications 3. Disassembly and Reassembly 4. Troubleshooting 5. Exploded Views and Parts List 6. Block Diagram 7. Connection Diagram This service manual is also provided on the web, the ITSELF system Samsung Electronics Co., Ltd. http://itself.sec.samsung.co.kr © Samsung Electronics Co.,Ltd. October. 2001 Printed in Korea. VERSION NO. : 2.03 CODE : JC-0051A This manual is stated and provided for service description. All rights reserved. Any parts of the information in this manual are prohibited from free duplication, use or translation without prior written approval except in cases allowed by the Copyright Act. Specifications are subject to change without prior notice. Samsung Electronics Digital Printing CS Group Copyright (c) 2001. 5. Precautions 1. Precautions Please read the following carefully to prevent any accidents and not to damage the unit during service. 1-1 Safety Precautions 1. Safety Precautions There are some electric or machinery parts with safety related property. If the parts replaced are different from the original, the safety may not function. Even if the part could allow higher voltage than that of the part used, do not replace it and use a regular product clarified in specifications. 2. Be careful not to leave a switch, a cover or a safety device out when reinstalling or assembling the product after repair. 3. Replacing Precautions Do not change or add parts as you like. You cannot benefit from such a remodeled product at your will during the term of guarantee. 4. You must replace overheated or damaged parts or cords with regular products. Please solve the problem causing any damage or overheating and troubles beforehand. Especially mind the safety on the part with this mark. You must use regular parts described in specifications for the parts inflammable and where the current can be flown. Otherwise any hazard such as an electric shock or a fire could occur. LASER STATEMENT (LASERTURVALLISUUS) WARNING : NEVER OPERATE AND SERVICE THE PRINTER WITH THE PROTECTIVE COVER REMOVED FROM LASER/SCANNER ASSEMBLY. THE REFLECTIVE BEAM, ALTHOUGH INVISIBLE, CAN DAMAGE YOUR EYES. Class 1 laser product Luokan 1 laserlaite Klass 1 laser apparat Allonpituus 770-795nm Teho 0.3mW±0.03mW CAUTION INVISIBLE LASER RADIATION WHEN THIS COVER OPEN. DO NOT OPEN THIS COVER. VORSICHT UNSICHTBARE LASERSTRAHLUNG, WENN ABDECKUNG GEOFFNET. NIGHT DEM STRAHL AUSSETZEN. ATTENTION REYONNEMENT LASER INVISIBLE EN CAS D’OUVERTURE. EXPOSITION DANGERUSE AU FAISCEAU. ATTENZIONE RADIAZIONE LASER INVISIBLE IN CASO DI APERTURA. EVITARE L’ESPOSIZONE LA FASCIO. PRECAUCION REDIACION LASER INVISIBLE CUANDO SE ABRE. EVITAR EXPONERSE AL RAYO. CAUTION : Avoid exposure to invisible laser radiation when the development unit is not installed. 1-2 Precautions on Disassembly and Reassembly Very careful precautions should be taken when replacing parts. Before replacing, please check cables because you cannot put the cables that you removed for replacing parts into the proper place if you would not make sure of where they were connected and in which condition. 7. When disassembling, assembling, also observe small components are located in place. 8. If you uncover and turn the machine over to replace some parts, toner or paper particles may contaminate the LSU window. Protect the LSU window with clean paper. Please do the following before disassembling for a repair or replacement of parts. Releasing Plastic Latches 1. Pull out paper cassette, printer cartridge installed. Especially careful not to be scratched by the surface of developer or not to expose them to light. 2. Turn the power switch off. 3. Take out the power plug, printer cable from the printer. 4. Use only the same type of part as original when replacing parts. 5. Do not force to open or fasten plastic material components. 6. Be careful that small parts such as screws should not get in the printer. Samsung Electronics Many of 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. 1-1 Precautions 1-3 Tools for Troubleshooting The following tools are recommended for safe and smooth troubleshooting described in this service manual. 1 DCU(Diagnostic Control Unit) Standard: Test equipment to diagnose the Laser printer supplied by Samsung Electronics. 4 Driver Standard: "-" type, "+" type (M3 long, M3 short, M2 long, M2 short). 5 Pinset Standard: For general home use, small type. 2 DVM(Digital Volt Meter) Standard: Indicates more than 3 digits. 6 Cotton Swab Standard: For general home use, for medical service. Ground Equipments a IPA(Isopropyl 7 Cleaning Alcohol)dry cloth or a soft stuff neutral detergent. 3 Electronic Scale 8 Software(Driver) installation CD ROM Standard: Equipment to check the weight of consumables(toner cartridge) supplied by Samsung Electronics. (The gram unit can be measured.) Note 1-2 Mind your hands not to be touched when you disassemble and reassemble PBA ASS'Y, such as the main board, SMPS, HVPS. Samsung Electronics Specifications 2. Specifications ML-1210 (ML-1220M) Engine Speed Resolution 12ppm 600 x 600 dpi 1200 x 600 dpi FROP(Fist Power On Time) Under 12.5 sec Warm-Up Time Power Consumption Dimension Weight Controller ML-1250 30 sec 25W (Print), 10W (Sleep) 329 x 355 x 231 mm (13” x 14” x 9.1”) Max 6.5Kg (With Toner Cartridge) Processor Jupiter 366MHz 61200 66MHz Memory 8MB Equivalent 4MB SmartGDI PCL6 Emulation Interface OS Support IEEE1284, USB (ML-1220M : USB ONLY) Windows 95/98/2000/Me/NT, Linux(Radhat 6.0), iMac(Mac OS 8.0) Paper N/W External Input 150 sheets Output 100 sheets Manual 1 sheet Media Type A4, Letter. Legal, Executive, B5, A5, Folio, 7 3/4(Monarch), #10, DL, C5, C6, B5 Toner Type Single Cartridge Life 2,500 sheets Cartridge User interface Pick up Roller 60,000 Feed Roller 60,000 Transfer Roller 60,000 Fuser 40,000 Key & LED LCD Samsung Electronics 2,500 (Initial : 1,000) 3Key, 4LEDs No Toner Save YES Reprint YES 2-1 Disassembly and Reassembly 3. Disassembly and Reassembly 3-1 Cover Assembly 3-1-1 Front Cover 1. Pull the both side of the cover to open. 4. Remove a screw of the front cover PCB and remove the connector, then remove the cover. 2. Remove a screw and remove the stopper that holds the printer cover. 3-1-2 Other Covers 1. Before you remove other covers, you should remove the Front cover in advance. 2. Rear Cover : Remove the cover in the direction of a . 3. Top Cover : Remove the cover in the direction of b . 4. Side Cover L, R : Remove the cover in the direction of c . 3. Loosen the right lower part of the cover, then push the cover in the direction of arrow to loosen the left lower part. Samsung Electronics 3-1 Disassembly and Reassembly 3-2 LED Panel PBA 1. Before you remove other covers, you should remove. 3. Remove two screws, and remove LED panel. • Front Cover (see [3-1 Main Cover]) 2. Remove two screws of PCB cover, and widen the hooks( a b c ) to remove. 4. Remove PCB from the PCB cover. 3-3 LSU(Laser Scanning Unit) 1. Before you remove LSU, you should remove front cover, rear cover and top cover. 3. Remove two connectors from the LSU, then remove the LSU. • Main Cover (see [3-1 Main Cover]) 2. Remove three screws securing the LSU. 3-2 Samsung Electronics Disassembly and Reassembly 3-4 Transfer Roller 1. Open the front cover. 2. Use a proper tool("-" type screwdriver) to pull the one end of the roller slightly, then take it out. 3-5 Motor Assembly 1. Before you remove the motor assembly, you should remove: • Main Cover (see [3-1 Main Cover]) • Shield Engine Assembly 2. Remove five screws securing the motor assembly and remove a connector from engine board(Engine board and SMPS board are integrated), then take the motor assembly out. Samsung Electronics 3-3 Disassembly and Reassembly 3-6 HVPS Board 1. Before you remove HVPS board, you should remove: •Main Cover (see [3-1 Main Cover]) 2. Remove four screws and a connector from HVPS board, then take the board out. Note When you reassemble the HVPS board, make sure that five terminals should be put in place. Terminal 3-7 Fuser Assembly 1. Before remove fuser assembly, you should remove: • Main Cover (see [3-1 Main Cover]) 3. Remove two screws and unplug a fuser assembly harness. Then use a " - " screwdriver to unlatch the fuser assembly to remove. 2. Remove two ground screws and a connector as illustrated. 3-4 Samsung Electronics Disassembly and Reassembly 3-8 Thermostat and Halogen Lamp 1. Remove a screw from the fuser assembly and remove the thermostat cover, then remove two screws securing the thermostat. 3. Take the halogen lamp out from the Heat Roller. Note When you reassemble the halogen lamp, handle it with care as it is fragile. 2. Remove two screws from the fuser assembly, and take the Heat Roller out. Samsung Electronics 3-5 Disassembly and Reassembly 3-9 SMPS Board 1. Before you remove the SMPS board, you should remove: • Main Cover (see [3-1 Main Cover]) 3. Unplug connectors from the main board and connectors from SMPS, then remove the SMPS. Remove four screws from SMPS and remove the SMPS board. 2. Remove screws in the order of a b then remove the shield engine assembly. a b 3-6 Note The Engine board and SMPS board are integrated in a body. Samsung Electronics Disassembly and Reassembly 3-10 Main Board and Sensor Board 1. Before you remove the main board, you should remove: 3. Release four snap-fits securing the insulator engine board and then remove the insulator. • Main Cover (see [3-1 Main Cover]) • SMPS board (see [3-9 SMPS Board]) 2. Remove two screws from the main board and unplug all of connectors, then remove the board. Main B’d 4. Release four snap-fits securing the sensor board and then remove the sensor board. Samsung Electronics 3-7 Troubleshooting 4. Troubleshooting 4-1 How to use DCU 4-4 The cause and solution of the malfunction 4-1-1 DCU Setup ......................................Page(4-2) 4-4-1 All LEDs blinking (Fuser Error)........Page(4-16) 4-1-2 Code ................................................Page(4-2) 4-4-2 All LEDs blinking (SCAN ERROR) .Page(4-16) 4-1-3 Self Diagnostic Mode......................Page(4-3) 4-1-4 Self Test Button ................................Page(4-4) 4-4-3 Not function of the gear of the fuser due to melting away.....................................Page(4-17) 4-1-5 Paper Path Layout ...........................Page(4-4) 4-4-4 Paper Empty.....................................Page(4-17) 4-4-5 Paper Empty without indication.......Page(4-17) 4-4-6 Cover Open ......................................Page(4-18) 4-2 The cause and solution of Bad image 4-2-1 Vertical Black Line and Band ..........Page(4-5) 4-2-2 Vertical White Line ...........................Page(4-5) 4-2-3 Horizontal Black Band .....................Page(4-6) 4-2-4 Black/White Spot..............................Page(4-6) 4-4-7 No lamp on when the cover is open ...........................................................Page(4-18) 4-4-8 Defective motor operation ...............Page(4-19) 4-4-9 No Power..........................................Page(4-19) 4-4-10 Vertical Line Getting Curved .........Page(4-20) 4-2-5 Light Image.......................................Page(4-7) 4-2-6 Dark Image or a Black.....................Page(4-7) 4-2-7 Uneven Density................................Page(4-8) 4-2-8 Background ......................................Page(4-8) 4-2-9 Ghost (1)...........................................Page(4-9) 4-2-10 Ghost (2)..........................................Page(4-9) 4-2-11 Ghost (3) ..........................................Page(4-10) 4-2-12 Ghost (4) .........................................Page(4-10) 4-2-13 Satins on the Face of Page............Page(4-10) 4-5 Toner Cartridge Service 4-5-1 Precautions on Safe-keeping of Toner Cartridge ..........................................................Page(4-21) 4-5-2 Service for the Life of Toner Cartridge ..........................................................Page(4-21) 4-5-3 Service for Judgement of Inferior Expendables and the Standard of Guarantee .....Page(4-21) 4-5-4 Signs and Measures at Poor toner cartridge ..........................................................Page(4-22) 4-2-14 Satins on Back of Page..................Page(4-11) 4-2-15 Blank Page Print out (1) .................Page(4-11) 4-2-16 Blank Page Print out (2) .................Page(4-11) 4-6 The cause and solutions of bad environment of the software 4-6-1 The printer is not working (1)...........Page(4-25) 4-3 The cause and solution of the bad discharge 4-6-2 The printer is not working (2) .........Page(4-26) 4-3-1 Wrong Print Position .......................Page(4-12) 4-6-3 Abnormal Printing.............................Page(4-27) 4-3-2 JAM 0...............................................Page(4-12) 4-6-4 SPOOL Error ...................................Page(4-28) 4-3-3 JAM 1...............................................Page(4-13) 4-3-4 JAM 2...............................................Page(4-13) 4-3-5 Multi-Feeding...................................Page(4-14) 4-3-6 Paper rolled in the fuser .................Page(4-14) 4-3-7 OPC .................................................Page(4-15) Samsung Electronics 4-1 Troubleshooting 4-1 How to use DCU 4-1-1 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. 4-1-2 Code Connect DCU to the printer and turn the power on. It show 7 LED on the panel and each code tells the function of the printer. Normal Code While printing or warming up, it indicate the position of the paper 61 00-05 Warm up Ready(kind of paper) 20 30 40 50 69 Print Start Feed Sensor On Feed Sensor off Paper Out Sleep Mode The printer is on, the cover is open or close. 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 The engine controller received the print order from the video controller. The paper is passing out of the Feed Sensor. The paper has passed out of the Feed Sensor. The paper has passed out of Exit Sensor. The fuser power turned off to minimize the power consumption. Error Code When detecting the malfunction, the printing is stopped to indicate error code. 60, 62, 68 Fuser Error 64 70 71 72 73 95 Cover Open No Paper Paper Jam 0 Paper Jam 1 Paper Jam 2 LSU Not Ready 4-2 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 The Printer Cover is open or Toner Cartridge not installed. No paper in the paper cassette. The front part of paper is jammed between pickup unit and Feed sensor. The front part of paper is jammed between the Discharge sensor and Feed sensor. The front part of paper is jammed just after passing through the discharge sensor. LSU Scanner Motor not ready or Hsync signal not output. Samsung Electronics Troubleshooting 4-1-3 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. 00 Main Motor Operating System Only the main motor is in operation. 01 Main High Voltage On(THV-) -1550 voltage output by MHV terminal. 02 Transfer High Voltage(-)On(THV-) -1300 voltage output by MHV terminal. 03 Caution : High voltage probe should be used. Transfer High Voltage (+)Reference on (THV +) 1300 voltage output by MHV terminal. 04 Caution : High voltage probe should be used. Caution : High voltage probe should be used. 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. Press the [Up] button to switch the voltage. The middle and right one of the three LEDs are on and -530 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. 07 Pempty/PWIDTH/New CRU Sensor Test : Pempty/PWIDTH.HEW CRU sensor test. If activate the Actuator of the PEMPTY/PWIDTH Sensor, the left and right of the three LEDs are on. If you install new toner Cartridge in this mode, the right LED is on. 08 Feed & Exit Sensor Test Test the Feed sensor and Discharge sensor in the same way as '06'. 09 Cover Open Sensor Test The same way as code '06'. 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. Samsung Electronics 4-3 Troubleshooting 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. If no toner cartridge in the printer, output of THV is +199V ~ + 2100V. 14. PTL Test Indicates the PTL LED. 15. Fan Test Indicates the function of the fan. 4-1-4 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. FACE DOWN PAP ER (150 SHE ETS ) REC ORD ED MANUA L 1 SHE ET RE CO RD ED PAP ER (10 0S HE ETS ) 4-1-5 Paper Path Layout LSU KNOCK UP EXIT 2 PICK UP CARTRIDGE CR DR FUSER H R/L SR OPC IDLE FEED FACE UP TR PTL EXIT 1 SENSOR BOARD MAIN BOARD Pr R/L EXIT SENSOR SMPS SHIELD 4-4 EMPTY SEN FEED SEN SHIELD Samsung Electronics Troubleshooting 4-2 The cause and solution of Bad image 4-2-1 Vertical Black Line and Band • Description Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer 1. Straight thin black vertical line occurs in the printing. 2. Dark black vertical band occur in the printing. Check and Cause Solution 1. Damaged develop roller in the Developer or deformed Doctor-blade. 1. If causes 1 and 2 occur in the developer cartridge, replace the developer and try to print out. 2. Scratched surface of the discharge roller in the developer, or heavily accumulated foreign matters between the discharge roller and fur transfer roller/ charge roller. 2. Replace the transfer roller if occurred as No. 3. 3. Partly depression or deformation on the surface of the transfer roller. 4-2-2 Vertical White Line • Description Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer White vertical voids in the image. Check and Cause 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 occur in front of the image.) Solution 1. Foreign matter stuck onto the window : Clean the LSU window with recommended 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. It may occur when Burr and foreign substances are on the window of the developer frame. 3. No 3. : Remove the foreign matter and burr of the exposure window. 4. If the fuser is defective, voids occur periodically at the top of a black image. 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, check to see if the weight of the developer is below 670g. If so, replace the developer cartridge. Samsung Electronics 4-5 Troubleshooting 4-2-3 Horizontal Black Band • Description Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer 1. Dark or blurry horizontal stripes occur in the printing periodically. (They may not occur periodically.) Check and Cause Solution 1. Bad contacts of the voltage terminals to developer. 1. Clean each voltage terminal of the Charge, Supply, Develop and Transfer roller. (remove the toner particles and paper particles) 2. The rollers of developer may be stained. Charge roller = 37 mm Supply roller = 27 mm Develop roller = 32 mm Transfer roller = 47 mm 2. Clean the right Gear that has relatively small gap of the teeth in the OPC. 3. If the malfunction persists, replace the developer. 4-2-4 Black/White Spot • Description Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer 1. Dark or blurry black spots occur periodically in the printing. 2. White spots occur periodically in the printing. Check and Cause Solution 1. If dark or blurry black spots occur periodically, the rollers in the Developer may be contaminated with foreign matte or paper particles. ( Charge roller : 37 mm interval OPC drum : 75mm interval) 1. Run OPC cleaning Mode Print and run the Self-test 2 or 3 times. 2. If faded areas or voids occur in a black image at intervals of 75 mm, or black spots occur elsewhere, the OPC drum surface is damaged. 2. In case of 75mm 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. If a black image is partially broken, the transfer voltage is abnormal or the transfer roller's life has expired. 3. The transfer roller guarantees 50,000 sheets printing. If the roller's life is expired, replace it. 4. In case of 37mm interval unremovable in 1, take measures as to replace the developer 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. 4-6 Samsung Electronics Troubleshooting 4-2-5 Light Image • Description Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer The printed image is light, with no ghost. Check and Cause Solution 1. Develop roller is stained when the toner of developer cartridge is almost consumed. 1. Check if the Toner Save mode is off. 2. Ambient temperature is below than 10°C. 2. Replace the developer cartridge and try to print out. 3. Wait 30 minutes after printer is powered on before you start printing. 3. Bad contact caused by the toner stains between the high voltage terminal in the HVPS and the one in the set. 4. Clean up the contaminated area by the toner. 4. Abnormal output from the HVPS. (Run self-test and check 1~4) 5. Replace the HVPS if the problems are not solved by the above four directions. ( Service parts : Figure 11, Chapter 5) 4-2-6 Dark Image or a Black • Description Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer The printed image is dark. Check and Cause Solution 1. No charge voltage in the engine board. ( Perform DCU diagnostic code 01) 1. Clean the high voltage charge terminal. 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. 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. Samsung Electronics 4-7 Troubleshooting 4-2-7 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 transfer roller bushing or holder is damaged. 1. Replace both the left and right Spring Holder. 2. The toner level is not even on the developer roller due to the bad blade. 2. Occur in the developer cartridge, replace the developer and try to print out. 4-2-8 Background • Description Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer 4-8 Light dark background appears in whole area of the printing. Check and Cause Solution 1. Recycled recording paper has been used. 1. B/S is not guaranteed when using recycled paper. 2. The life of the Developer has expired. (The weight at the expiration of the developer's life: 800 ± 20g) 2. Replace the Developer that has expired. 3. The up-to-down movement of the transfer roller is swift? 3. Clean the busing part of the transfer roller. 4. The HVPS is normal? (Perform DCU diagnostic code 01~04) 4. Replace the Developer if not solved by the above direction 1~3. Samsung Electronics Troubleshooting 4-2-9 Ghost (1) • Description 75mm Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Ghost occurs at 75 mm intervals of the OPC drum in the whole printing. Check and Cause Solution 1. Bad contacts caused by contamination from toner particles between high voltage terminal in the main body and the electrode of the Developer. 1. Clean the terminals when contaminated by toner particles. 2. Bad contacts caused by contamination from toner particles between high voltage terminal in the main body and the one in the HVPS board. 2. Occur in the developer cartridge, replace the developer and try to print out. 3. The life of developer is expired. 3. Replace the engine board if not solved by the above directions 1-2. (Service Parts : Figure 9 , chapter 5) 4. Transfer roller lifetime(50,000 sheets) has expired. 4. If not solved by the direction 3, check the transfer roller lifetime and replace it. (Service Parts : Figure 8-2 , chapter 5) 5. Abnormal low temperature(below 10°C). 5. Wait about 1 hour after power on before using printer. 4-2-10 Ghost (2) • Description Samsung Electronics 75mm Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Ghost occurs at 75 mm intervals of the OPC drum in the whole printing. (When printing on card stock or transparencies using manual feeder) Check and Cause Solution When printing on card stock thicker than normal 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 returning to the original mode is recommended. 4-9 Troubleshooting 4-2-11 Ghost (3) • Description Check and Cause Digital Digital Printer Printer Solution 1. The life of the developer may be expired. 1. Occur in the developer cartridge, replace the developer and try to print out. 2. The abnormal voltage and bad contact of the terminal of the supply roller roller. 2. Check the approved voltage of the supply roller and contact of the terminal and adjust if necessary. 32mm Digital Digital Printer Printer Digital Digital Printer Printer White ghost occurs in the black image printing at 32mm intervals. 4-2-12 Ghost (4) • Description Check and Cause 47mm Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Ghost occurs at 47mm intervals. The temperature of the fuser is maintained high. Solution 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) 4-2-13 Satins on the Face of Page • Description Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer 4-10 The background on the face of the printed page is stained. Check and Cause Solution 1. Toner leakage due to improperly sealed developer. 1. Replace the developer cartridge. 2. If the transfer roller is contaminated, satins on the face of page will occur. 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. Samsung Electronics Troubleshooting 4-2-14 Satins on Back of Page • Description Digital Digital Pri Digital Printer Digital Printer Digital Printer The back of the page is stained at 47mm intervals. Check and Cause Solution 1. Transfer roller is contaminated. 1. Perform the OPC Cleaning Mode Print 2 or 3 times. Run Self-Test to remove the contamination of the transfer roller. 2. Pressure roller is contaminated. 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. 4-2-15 Blank Page Print out (1) • Description Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Blank page is printed. Check and Cause Bad ground contacts in OPC and/or developer. Solution Remove contamination of the terminals of the developer and the unit. 4-2-16 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. 1. Remove contamination of the terminals of the developer. 2. Abnormal solenoid. 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. (Service Parts : Figure 9 , chapter 5) 4. Turn the power off, delete the data of PC and try printing again. Samsung Electronics 4-11 Troubleshooting 4-3 The cause and solution of the bad discharge 4-3-1 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 (Service Parts : Figure 8-16 , chapter 5) 4-3-2 JAM 0 1. Paper is not exited from the cassette. 2. Jam-0 occurs if the paper feeds into the printer. • Description Check and Cause Solution 1. Check the Solenoid by using DCU diagnostic mode 06. 1. Replace the solenoid. (Service Parts : Figure 8-11 , chapter 5) 2. Check if the pad is loose due to bad sealing of the side-pad. 2. Replace the side-pad Assembly L or R, if necessary. (Service Parts : Figure 8-13 , 8-14, chapter 5) LSU EXIT 2 PICK UP CARTRIDGE FEED SEN EXIT 1 EXIT SENSOR JAM 0 3. Check the surface of the roller-pickup for foreign matter. 4. If continuous clusters occur, check whether the assembly slot between shaft-pickup and housing-pickup become open or is broken away. 3. Clean with soft cloth dampened with IPA(Isopropyl Alcohol) or water. 4. Replace the Housing-Pickup and/or Shaft-Pickup. (Service Parts : Figure 8-135, 8-12, chapter 5) 5. If the paper feeds into the printer rand Jam 0 occurs, perform DCU to check feed-sensor of the sensor board. 4-12 Samsung Electronics Troubleshooting 4-3-3 JAM 1 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. • Description Check and Cause LSU EXIT 2 Solution 1. If the recording paper is jammed in front of or inside the fuser. (Perform DCU diagnostic code of) 1. Replace the SMPS. (Service Parts : Figure 10, chapter 5) 2. If the recording paper is stuck in the discharge roller and the fuser just after passing through the ActuatorFeed, Feed Actuator may be defective. 2. Reassemble the Actuator-Feed and Spring-Actuator if the returning is bad. PICK UP CARTRIDGE FEED SEN FEED EXIT 1 EXIT SENSOR JAM 1 4-3-4 JAM 2 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. • Description LSU EXIT 2 PICK UP CARTRIDGE FEED SEN EXIT 1 EXIT SENSOR JAM 2 Samsung Electronics 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. 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 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. 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. Paper is accordion in the fuser. 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. 4-13 Troubleshooting 4-3-5 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 mode : solenoid check 06. 1. Replace the solenoid if necessary. (Service Parts : Figure 13, chapter 5) 2. Pad-Friction is contaminated with foreign matter.(oil...) 2. Clean the pad friction with soft clothe dampened with IPA(Isopropyl Alcohol). 3. The face of paper is blended. 3. Use the smooth paper. 4-3-6 Paper rolled in the fuser • Description If contaminated at intervals of 57mm on the back of a paper. Check and Cause 1. Contamination of the pressure roller. (Background, Hot off set) Solution 1. Disassemble the fuser, clean the area between the Heat-roller and Thermistor and remove the foreign matter of the pressure roller. 2. If background appears badly in the printing, fix it by referring to the solutions for background. (See 4-2-8 Background) 4-14 Samsung Electronics Troubleshooting 4-3-7 OPC • Description Paper is rolled up in the OPC. Check and Cause Solution 1. Paper is too much thin. 1. Recommend to use normal paper. 2. The face of paper is curled. 2. How to remove the rolled paper in the OPC. • Remove the paper while turning the OPC against the ongoing direction. • Clean fingerprints on the OPC softly with soft cloth dampened with IPA(Isopropyl Alcohol) or tissue. Samsung Electronics 4-15 Troubleshooting 4-4 The cause and solution of the malfunction 4-4-1 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. 1. If the thermostat is open replace the fuser and check following items. 2. Check if the thermistor sensor is in place. 2. If the thermistor sensor device is located deep in the sponge, replace the fuser. 3. Check if the heat lamp works properly. 3. Check if the circuit of overheat mode works properly. 4. Check if the overheat circuit works properly. 4. Run DCU mode : Perform DCU diagnostic code 10. 5. The fuser gear is defective due to melting away. 4-4-2 All LEDs blinking (Scan Error) • Description 1. All lamps on the operator panel blink. Check and Cause DCU Mode : Perform DCU diagnostic code 05. If the DCU error code 95 is displayed, replace LSU. Solution Replace LSU. (Service Parts : Figure 13, chapter 5) If you cannot solve the problem after you replace LSU, replace the main board. 4-16 Samsung Electronics Troubleshooting 4-4-3 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 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-. Solution 1. Replace the Fuser. (Service Parts : Figure 8-4, Chapter 5) 2. Replace the Main Control board. (Service Parts : Figure 9, Chapter 5) 4-4-4 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 sensor. 1. Replace the defective actuator. (Service Parts : Figure 8-17, Chapter 5) 2. The function of the sensor board is defective Perform DCU mode: Perform DCU diagnostic code 8. 2. Replace the sensor board. (Service Parts : Figure 8-10, Chapter 5) 4-4-5 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 sensor. 1. Replace the defective actuator. (Service Parts : Figure 8-17, chapter 5) 2. The function of the sensor board is defective Perform. DCU mode : Perform DCU diagnostic code 8. 2. Replace the sensor board. (Service Parts : Figure 8-10, chapter 5) Samsung Electronics 4-17 Troubleshooting 4-4-6 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. 1. Replace the hook lever, if defective. (Service Parts : Figure 1, chapter 5) 2. Check the connector 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. 2. Check the insertion of the Cover Open Sensor Connect. 3. Replace the Main Control board or Cover Open Sensor. (Service Parts : Figure 9, chapter 5) Hook Lever 4-4-7 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 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 Solution 1. Check the insertion of the Cover Open Sensor Connect. 2. Replace the Main Control board or Cover Open Sensor. (Service Parts : Figure 9, chapter 5) 4-18 Samsung Electronics Troubleshooting 4-4-9 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. 1. Check the motor harness, replace it, if defective. (Service Parts : Figure 12, chapter 5) 2. Perform DCU diagnostic code 00 and Check the motor operation. 2. Replace the SMPS, if necessary. (Service Parts : Figure 10, chapter 5) 4-4-10 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. 1. Replace the power supply cord or SMPS. (Service Parts : Figure 10, chapter 5) 2. Check the inferiority of LED-Panel on the front-cover if the LED of Panel does not appear after normal warmingup. 2. Replace the control board. (Service Parts : Figure 9, chapter 5) 3. Replace the LED-panel. (Service Parts : Figure 1-1, chapter 5) Samsung Electronics 4-19 Troubleshooting 4-4-11 Vertical Line Getting Curved • Description When printing, vertical line gets curved. Check and Cause 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. Solution 1. Replace LSU. (Service Parts : Figure 13, chapter 5) 2. Replace the Main Control board. (Service Parts : Figure 9, chapter 5) 4-20 Samsung Electronics Troubleshooting 4-5 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. 4-5-1 Precautions on Safe-keeping of Toner Cartridge Excessive exposure to direct light more than a few minutes may cause damage to the cartridge. 4-5-2 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. 4-5-3 Service for Judgement of Inferior Expendables and the Standard of Guarantee Please refer to User's Manual or Instructions on Fax/Printer Expendables SVC for the judgement of inferior expendables and the standard of guarantee besides this service manual. Samsung Electronics 4-21 Troubleshooting 4-5-4 Signs and Measures at Poor toner cartridge Fault Light image and partially blank image (The life is ended.) Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Signs Cause & Check • The printed image is light or unclean and untidy. 1. If the image is light or unclean and untidy printed image Shake the developer and then recheck. • Some part of the (1)NG: Check the weight of the image is not printdeveloper ed. (2)OK: Lack of toner, so the life is nearly closed. • Periodically a noise 2. Some part of image is not as "tick tick" occurs. printed - Shake the developer 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. Toner Contamination • Toner is fallen on the papers periodically. • Contaminated with toner on prints partly or over the whole surface. Solution 1. All of 1, 2, 3 above(1)The weight of the developer ended: 800g ± 20g (2)If it become better by shaking, replace with a new developer after 50-100 sheets in the closing state of the life span. 2. In case of 2If it becomes better after cleaning 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 3If 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 3This is a phenomenon caused by lack of toner, so replace with a new 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. 1. If both ends of the OPC drum are contaminated with toner: Check the life of the developer. (In case of less than 820g, the life may be expired.) 2.The center of the printed matter is contaminated with toner. (1)Check whether foreign substances or toner are stuck to the terminal (contact point) of the developer. (2)Check whether the state of the terminal assembly is normal. 2. Check whether it could be recycled. 3. If it cannot be recycled: Replace the developer. 4-22 Samsung Electronics Troubleshooting Fault White Black spot Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Signs Cause & Check 1. If light or dark periodical black dots occur, this is because the developer rollers are contaminated with foreign substance or paper particles. • White spots occur in the image period- (1)35mm interval : Charged roller ically. (2)75mm interval : OPC cycle • Light or dark black dots on the image occur periodically. 2. If white spots occur in a black image at intervals of 75mm, or black spots occur elsewhere, the OPC drum is damaged or foreign substance is stuck to the surface. Recycled product Samsung Electronics Solution 1. In case of 1 above Run OPC Cleaning Mode Print 4-5 times repeatedly to remove. Especially check foreign substance 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 37mm - Replace the developer. : at intervals of 75mm - Remove foreign substance. : Broken image - Replace the developer according to carelessness. 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 abnormal. 3. In case of 3 - Exchange the transfer roller because the life of the transfer roller in use has been expired. (Check the transfer voltage and readjust if different.) • Poor appearance of 1. Poor appearance of the develthe developer. oper. (1)Check the damage to label • Unclean and rough and whether different materiprintouts. als are used. (2)Check the appearance of • Bad background in parts of the developer, such the image. as frame, hopper. 1. In case of 1 (1)If there is an evidence of disassembling the developer. (2)If materials other than normal parts of the developer are added or substituted. 2. Unclean and rough printouts. (1)Check whether foreign substance or toner are stuck to the terminal (contact point) of the developer. (2)Check whether the state of the terminal assembly is normal. 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 developer. 4-23 Troubleshooting Fault Ghost & Image Contamination Signs Cause & Check Solution • The printed image is too light or dark, or partially contaminated black. 1. The printed image is too light or dark, or partially contaminated black. (1)Check whether foreign substance or toner are stuck to the terminal(point of contact) of the developer. (2)Check whether the terminal assembly is normal. 1. All of 1, 2, 3 above (1)Remove toner and foreign substances adhered to the contact point of the developer. (2)The contact point of the unit facing that of the developer also must be cleaned. (3)If the terminal assembly is unsafe: • Fully stick the terminal to or reassemble it after disassembling. • Disassemble the side plate and push the terminal to be stuck, then reassemble it. 2. Totally contaminated black. (Black image printed out) (1)Check whether foreign substances are stuck to the terminal(point of contact) of the developer and the state of assembly. (Especially check the charged roller terminal.) 2. In case of 2 It is a phenomenon when the OPC drum of the developer is not electrically charged. Clean the terminals of the charged roller, then recheck it. 3. The printed image is dark and ghost occurs. (1)Check foreign substance attached to the terminal (point of contact) of the developer and the state of assembly. (Especially check the developing roller terminal.) 3. In case of 3 It is a phenomenon as the developing bias voltage of the developer. Clean the terminals of the developing roller, then recheck it. • Totally contaminatedblack. (Black image printed out) • The density of printouts is too dark and ghost occurs. 4-24 Samsung Electronics Troubleshooting 4-6 The cause and solutions of bad environment of the software 4-6-1 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. 1.Check the power of the printer and perform the SelfTest. If the test printing works, that means no problems 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. Check if the PC and the printer is properly connected and the toner cartridge installed. 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 4-5) 3. Printing is nor working in the Windows. 3. Check if the connection between PC and printer port is proper. If you use windows, check if the printer driver 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 working 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. Check if the printer cable is directly connected to peripheral devices Samsung Electronics 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. 4-25 Troubleshooting 4-6-2 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. 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. Printing error occurs even if there is enough space in the hard disk. 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. Check the parallel-port-related items in the CMOS Setup. 3. As a printer port, Select ECP or SPP among SPP(Normal), ECP, and EPP modes(increase printing speed) SPP normal mode support 8-bit data transfer, while ECP Mode transfer the 12-bit data. 4. Reboot the system to print. 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. 4-26 Samsung Electronics Troubleshooting 4-6-3 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 defective or wrong setup in the CMOS Setup. Check and Cause Solution 1. Set up the parallel port in the CMOS SETUP. 1. Select SPP(Normal) or ECP LPT Port the among ECP, EPP or SPP in the CMOS Setup. 2. Printer Driver Error. 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. Error message from insufficient memory. (The printing job sometimes stops or due to insufficient virtual memory, but it actually comes from the insufficient space of the hard disk.) 3. Delete the unnecessary files to secure enough space of the hard disk and start printing job again. Samsung Electronics 4-27 Troubleshooting 4-6-4 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. 1. Delete the unnecessary files to provide more space to start printing job. 2. If the previous printing error not solved. 2. If there are some files with the extension name of ****.jnl, Delete them and Reboot the Windows to restart printing job. 3. When expected to collide with other program. 3. Shut down all other programs except the current one, if possible. 4. When an application program or the printer driver is damaged. 4. Delete the printer driver completely and reinstall it. 5. When some files related to OS are damaged or virus infected. 5 After rebooting the computer, check for viruses, restore the damaged files and reinstall the program to do the printing job. 6. Memory is less than suggested one. 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. 4-28 Samsung Electronics Exploded Views and Parts List 5. Exploded Views and Parts List • Deal drawings and service parts are declared for the items with higher rate of inferiority and replaceable in the level of service description only. • If inferiority occurs, you can replace the parts by the unit declared in deal drawings and service items. Way to observe Part Code & Description Part code and Description is quoted and controlled by determined standard. Refer to this determined standard, it will help with ordering Part. • There ar woo kinds of Part code inscription type. ex ) 2007-007961 R-CHIP ex ) JB96-01268A ELA UNIT-COVER TOP Type 1 : Controlled by Company : It can be commonly used for all kinds of product SEC produce. Mostly, electronics Parts. Type 2 : Controlled by Division : It is used or one produce. Mostly, Mostly, mechanical Parts. • A/S privately used part : It is only used for A/S . • Ass’y part : Assembled by more than 2 Parts. If necessary part is not A/S Part, Ass’y part including necessary par can be used. It is shown in the diagram and drawing of SVC manual. • Ass’y part and A/S privately used Part is distinguished by part Code and Description. The are inscription type 2. It is recognized by Part character and front side of description. Samsung Electronics DIVISION A/S Private PART CODE **81-****** (JB81-00039A) DESCRIPTION AS-***** (AS-USE) ASS’Y Part **75-****** (JB75-00068A) MEC-***** (MEC-CHUTE) ASS’Y Part **92-****** (JB92-01131A) PBA ****** (PBA MAIN-CONTROLLER) ASS’Y Part **97-****** (JB97-01089A) MEA ****** (MEA UNIT-PULLEY IDLE) 5-1 Exploded Views and Parts List 5-1 Exploded Views and Parts List • Service Parts List No. 1 1-1 1-2 1-3 1-4 1-5 1-6 1-7 2 Description ELA UNIT-CVR FRONT PBA SUB-LED PANEL PMO-COVER FRONT CBF HARNESS-FRONT PANEL PMO-COVER PCB PMO-GUIDE STACKER PMO-STOPPER PMO-COVER FRONT, SUB IMAC PMO-STACKER RX PMO-STACKER RX 3 PMO-COVER TOP 4 PMO-COVER REAR 5 PMO-COVER SIDE(L) 6 PMO-COVER SIDE(R) 7 MEC-TRAY(P) MEC-TRAY(P) 8 ELA UNIT-FR LOWER 8-1 PMO-FRAME LOWER 8-2 MEC-ROLLER_TRANSFER 8-3 FAN-DC 8-4 ELA HOU-FUSER ASS’Y ELA HOU-FUSER ASS’Y 8-4-1 LAMP-HALOGEN LAMP-HALOGEN 8-4-2 THERMOSTAT 8-5 MEC KNOCKUP-ASS’Y 8-6 MEC UNIT HOLDER PAD 8-7 PMO-CAP_PAD 8-8 MEC GEAR-PICK UP 8-9 MEC-TERMINAL 8-10 PBA MAIN-SENSOR 8-11 SOLENOID 8-12 MEC-CAM PICK UP 8-13 MEC-SIDE PAD(L) 8-14 MEC-SIDE PAD(R) 8-15 PMO-HOUSING-PICK UP 8-16 PMO-ACTUATOR-EXIT 8-17 PMO-ACTUATOR-FEED 8-18 MEC-PLATE UPPER 8-19 ELA HOU-OPEN SENSOR 8-20 ELA HOU-PTLASS’Y 8-21 PMO-BUSHING_TR(R) 8-22 PMO-BUSHING_TR(L) 8-23 SPRING-TR, L 8-24 SPRING-TR (300) 8-25 PMO-HOLDER_EXIT 8-26 PMO-COVER PTL 8-27 PMO-BUSHING SHAFT 8-28 MEC-ROLLER FEED 8-29 EMC-HOLDER FEED 8-30 PMO-HOLDER TR 9 PBA MAIN-CONTROLLER GDI PBA MAIN-CONTROLLER PCL PBA MAIN-ML-1220M IMAC(SUB) 10 SMPS-ML-1210 V2 SMPS-ML-1210 V1 11 SMPS-HVPS SMPS-HVPS 12 ELA UNIT-RX DRIVE 12-1 MOTOR-STEP 7.5 13 UNIT-LSU UNIT-LSU 5-2 O : Service available X : Service not available SEC.Code Q’ty SA * 1 X JC92-01280A 1 O refer to the table ⇒ 1 O JC39-00112C 1 O JC72-00678A 1 O JC72-00511A 1 O JC72-00519A 1 O JC72-00843A 1 O JC72-00302A 1 O JC72-00302C 1 O JC72-00522A 1 O JC75-00094A 1 O JC72-00523A 1 O JC72-00524A 1 O JC75-00099A 1 O JC75-00099D 1 O * 1 X JC72-00533A 1 O JC75-00129A 1 O 3103-001085 1 O JC81-00424A 1 O JC81-00423A 1 O 4713-001136 1 O 4713-001135 1 O 4712-000001 1 O JC75-00053A 1 O JC97-01486A 1 O JC72-00124A 1 O JC75-00056A 1 O JC75-00049A 5 O JC92-01197A 1 O JC33-00002B 1 O JC75-00072A 1 O JC75-00050B 1 O JC75-00051B 1 O JC72-00109A 1 O JC72-00130A 1 O JC72-00119A 1 O JC75-00111A 1 O JC96-01584A 1 O JC96-02037A 1 O JC72-00101A 1 O JC72-00102A 1 O JC61-00458A 1 O JC61-00024A 1 O JC72-00532A 1 O JC72-00534A 1 O JC72-40849A 1 O JC75-00054A 1 O JC75-00055A 1 O JC72-00100D 1 O JC92-01316D 1 O JC92-01333A 1 O JC92-01316C 1 O JC44-00026A 1 O JC44-00025A 1 O JC44-00024A 1 O JC44-00036A 1 O JC96-02125A 1 O JC31-00005B 1 O JC59-00015A 1 O JC59-00015B 1 O Remark • PMO-COVER FRONT • ML-1210 ML-1220M ONLY ML-1210,1250 ML-1220M ML-1210,1250 ML-1220M 220V 110V 220V 110V 125 / 250V ML-1210/XAA JC72-00677A ML-1210/XAC JC72-00677A ML-1210/XAX JC72-00677F ML-1210/XEG JC72-00677A ML-1210/XEU JC72-00677A ML-1210/XEF JC72-00677E ML-1210/XET JC72-00677A ML-1210/XEC JC72-00677F ML-1210/XEO JC72-00677A ML-1210/XIL JC72-00677G ML-1210/XIP JC72-00677A ML-1210/XSA JC72-00677A ML-1210/XEV JC72-00677V ML-1210/XEN JC72-00677A ML-1250 ML-1250/XAA JC72-00677B ML-1250/XAC JC72-00677B ML-1250/XEC JC72-00677M ML-1250/XEG JC72-00677B ML-1250/XEU JC72-00677B ML-1250/XEF JC72-00677L ML-1250/XET JC72-00677B ML-1250/XIL JC72-00677N ML-1250/XAX JC72-00677B ML-1250/XIP JC72-00677M ML-1250/XSA JC72-00677B ML-1220M ML-1220M/XEU JC72-00841A ML-1220M/XEF JC72-00841B ML-1220M/XIL JC72-00841C ML-1220M/AC JC72-00841A ML-1210 ML-1250 ML-1220M 220V 110V ML-1210/1220M ML-1250 ML-1210/1220M ML-1250 Samsung Electronics /1250 10 3 20M 12 ML - ML -12 Exploded Views and Parts List 7 13 5 2 8 4 8-18 1 9 8-26 11 8-20 8-22 8-23 8-30 8-2 1-5 1-2 8-21 8-24 8-12 10 8-13 1-6 1-3 8-5 8-14 8-9 8-6 8-15 1-1 8-7 8-19 8-1 1-4 8-11 8-4 1-2 8-8 8-25 8-4-2 1-2’ 8-3 8-17 8-27 8-16 8-29 8-4-1 8-28 8-10 6 1-7 ML-1210 / ML-1250 Samsung Electronics 12-1 12 ML-1220M 5-3 Exploded Views and Parts List 5-2 Front Assembly 0 11 SA MS UN G 3 2 5 ML-1210 / ML-1250 10 0’ 4 SA MS UN G 10 8 ML-1220M NO 0 6 1 12 9 DESCRIPTION ELA HOU-COVER FRONT 7 ELA HOU-COVER FRONT 1 CBF-HARNESS-PANEL MAIN 2 PMO-COVER FRONT 3 PMO-GUIDE STACKER 4 PMO-DOOR FACE UP 5 PPR-SHEET PAPER GUIDE 6 PMO-KEY A 7 PMO-KEY B 8 PMO-LENS SED 9 PMO-COVER PCB 10 PMO-STOPPER 11 PMO-BRKT PUSH DEVE 12 PBA SUB DISP-PANEL 13 PMO-COVER FRONT, SUB IMAC 2 2’ SA MS UN G 13 ML-1210 / ML-1250 5-4 ML-1220M Samsung Electronics Exploded Views and Parts List 5-3 Engine/Frame Lower Assembly 2-17 2-14 2-13 2-3 3-2 3-2-2 3-2-3 3-2-1 3-2-4 1 2-3-2 2-12 2-11 2-15 2-7 3-12 3-3 3-3-1 3-2-3 3-2-1 3-4 3-6 3-5 3-6 2-16 3 2-16-2 2-16-1 2-7-3 2-7-1 2-7-2 2-9 2-9-1 2-9-2 3-10-2 2-9-3 3-45 3-25 2-9-4 2-8 3-9 3-16 3-24 3-22 3-23 3-21 2-10 3-17 3-10-1 3-10 3-41 2-3-1 3-15 3-43 3-44 3-1 2-1 2-2 2-2-1 2-2-3 2-2-2 2-6 2-5 3-8 3-7 3-26 3-11 3-22 3-23 3-21 3-28 3-19 3-13 3-14 3-32 3-38 3-27 3-39 3-30 3-29 3-18 3-26 3-31 2-4 3-34 3-42 3-33 3-20 3-35 3-36 3-40 3-37 3-46 NO 1 2 2-1 2-2 2-2-1 2-2-2 2-2-3 2-3 2-3-1 2-3-2 2-4 2-5 2-6 2-7 2-7-1 2-7-2 2-7-3 2-8 2-9 2-9-1 2-9-2 2-9-3 2-9-4 2-10 2-11 2-12 2-13 2-14 2-15 2-16 DESCRIPTION SMPS-HVPS ELA HOU-ENGINE ASS’Y SOLENOID-(APOLLO) MEC-GEAR PICKUP PMO-GEAR_PICKUP,1 PMO-GEAR_PICKUP,2 SPRING-PICKUP,GEAR MEC-CAM PICKUP PMO-CAM_PICKUP PMO-SHAFT_PICKUP PMO-GEAR_FEED PMO-CLUTCH_FEED SPRING-CLUTCH MEC-KNOCKUP ASS’Y PMO-PLATE_KNOCKUP PMO-CAM-KNOCKUP IPR-BAR_KNOCKUP SPRING-KNOCK UP MEC-HOLDER PAD PMO-HOLDER PAD PMO-HOLDER_PAD RPR-PAD FRICTION SPRING-PAD PMO-CAP_PAD MEC-SIDE PAD(R) MEC-SIDE PAD(L) PMO-GEAR_TRANSFER PPR-SPACER DR MEC-TRANSFER ROLLER MEC-TERMINAL Samsung Electronics NO 2-16-1 2-16-2 2-17 S-1 3 3-1 3-2 3-2-1 3-2-2 3-2-3 3-2-4 3-3 3-2-1 3-3-1 3-2-3 3-4 3-5 3-6 3-7 3-8 3-9 3-10 3-10-1 3-10-2 3-11 3-12 3-13 3-14 3-15 3-16 DESCRIPTION TERMINAL SPRING-HV APOLLO PCT-INSULATOR ENG B’D SCREW-TAPTITE ELA HOU-FRAME LOWER PMO-FRAME LOWER MEA ETC-HOLDER TR L PMO-HOLDER TR PMO-BUSHING_TR(L) SPRING-TR IPR-PLATE_TR MEA ETC-HOLDER TR R PMO-HOLDER TR PMO-BUSHING_TR(R) SPRING-TR PMO-CAP PLTE GU/DEV R PMO-CAP PLTE GU/DEV L SPRING-GUIDE DEVE PMO-ACTUATOR_EXIT PMO-HOLDER_EXIT PMO-BUSHING_TERMINAL ELA HOU-OPEN SENSOR IPR-BRKT_SENSOR CBF-HARNESS COVER IPR-GUIDE-TR IPR-PLATE-TERMINAL IPR-SAW_PLATE PCT-FILM SAW IPR-EARTH_TRANS IPR-GROUND_GUIDE NO 3-17 3-18 3-19 3-20 3-21 3-22 3-23 3-24 3-25 3-26 3-27 3-28 3-29 3-30 3-31 3-32 3-33 3-34 3-35 3-36 3-37 3-38 3-39 3-40 3-41 3-42 3-43 3-44 3-45 3-46 DESCRIPTION IPR-GROUND_HVPS IPR-GROUND_FUSER IPR-GROUND_DRIVE CBF HARNESS-OPE GND PMO-HOLDER_PR BEARING-PRESSURE R SPRING-PR MEC-ROLLER_PRESSURE PMO-GUIDE_INPUT RMO-RUBBER_FOOT ELA HOU-FUSER ASS’Y220V CBF-HARNESS FUSER ELA HOU-MOTOR GND PMO-BUSHING SHAFT FAN-DC PMO-GEAR_83/35 SPRING-FUSER DR PMO-GEAR_FU_IN 47 PMO-GEAR_FU_OUT 47 MEC-ROLLER FEED PBA MAIN-SENSOR EMC-HOLDER FEED CBF HARNESS-MOTOR GND IRP-BRKT FUSER DRV PMO-HINGE FRONT(L) PMO-HINGE FRONT(R) PMO-COVER PTL ELA HOU-PTL PCT-COVER SHEET LAMP PCT-INSULATOR SENSOR B’D 5-5 Exploded Views and Parts List 5-4 Fuser Assembly 24 30 29 27 26 28 24 23 25 17 21 0 NO ELA HOU-FUSER ASS’Y 1 THERMISTOR-NTC 2 THERMOSTAT-150C 3 LAMP-HALOGEN 4 PMO-COVER FUSER 5 PMO-BUSHING H/R, L 6 PMO-BUSHING H/R, R 7 PMO-COVER_THERMOSTAT 8 NPR-ROLLER HEAT 9 IPR-ELECTRODE_PLATE 10 IPR-GROUND_FU 11 PMO-GUIDE CLAW 12 ELECTRODE-WIRE,1 13 ELECTRODE-WIRE,S 14 MEA ETC-SHAFT EXIT 14-1 PMO-SHAFT_EXIT(Z15) 14-2 RMO-RUBBER_EXIT 15 15-1 5-6 DESCRIPTION 0 7 S-1 13 2 9 12 20 15 15-2 15-1 4 16 1 18 S-2 14-1 14-2 22 17 PMO-ROLLER_IDLE EXIT IPR-PIN ROLLER EXIT 16 SPRING-EXIT 17 PMO-GEAR_EXIT_DRV16 18 PMO-GEAR_EXIT_IDLE 19 PMO-GEAR_FUSER 20 LABEL (R)-CAU_HOT_FU 21 SPRING-EXIT DOWN 22 SPRING-ES, GUIDE CLAW 23 GEAR-EXIT F/DOWN 24 BEARING-EXIT FU L 25 PMO-COVER FUSER F/DOWN 26 PMO-HOLDER_EXIT_DOWN 27 PMO-EXIT_DOWN_L 28 PMO-EXIT_DOWN_S 29 RMO-RUBBER-KICKER 30 MEC-UNIT_EXIT, F_DOWN S-1 SCREW TAPTITE S-2 SCREW TAPTITE 10 11 14 S-1 5 3 S-1 8 19 6 Samsung Electronics Exploded Views and Parts List 5-5 Shield Engine Unit Assembly NO DESCRIPTION 0 ELA HOU-SHIELD ENGINE 1 MEC-SHIELD BRKT CONTROLLER 1-1 IPR-SHIELD ENGINE 1-2 IPR-BRKT CONTROLLER 2 PCT-INSULATOR SMPS 3 CBF HARNESS-INLET ASS’Y S-1 SCREW-MACHINE S-2 SCREW-TAPTITE S-3 SCREW-TAPTITE 0 2 S-1 S-2 3 S-3 1 1-1 1-2 Samsung Electronics 5-7 Exploded Views and Parts List 5-6 RX Drive Assembly NO DESCRIPTION 0 ELA HOU-RX DRIVE 1 MOTOR-STEP 2 PMO-GEAR_71/28 3 PMO-GEAR_73/22 4 PMO-GEAR_132/19 5 IPR-BRKT_MOTOR 6 IPR-BRKT_GEAR 7 CBF-HARNESS_MOTOR S-7 SCREW-MACHINE 0 7 5 4 6 1 2 3 S-7 S-7 5-7 Plate-Upper Unit Assembly NO DESCRIPTION 0 MEC-PLATE UPPER 1 IPR-UPPER-PLATE 2 IPR-PLATE SPRING DEV 3 MEA ETC-ROLLER PICKUP 3-1 PMO-HOUSING_PICKUP 3-2 RMO-ROLLER_PICKUP 3-3 4 0 PMO-IDLE_PICKUP MEA ETC-IDLE FEED 4-1 PMO-HOLDER_PICKUP 4-2 SPRING-FEED 4-3 6 PMO-HOLDER_IDLE,FEED 5 ICT-ROLLER_IDLE,FEED 6 CABLE CLAMP S-1 SCREW TAPTITE S-9 SCREW TAPTITE 4 1 3-3 4-1 4-2 3-2 3 4-3 4 3-1 4-1 3-3 2 4-2 4-3 2 5-8 5 Samsung Electronics Block Diagram 6. Block Diagram 6-1. Block Diagram(GDI) MAIN USB PC IEEE 1284 CABLE +5V 74LVX161284 Line Transcei ver Power On VOLTAGE Res et DETECT OR FLASH MEMORY (0 .5MB) I N-LET EXI T SENSOR POWER CORD MOTOR (8MB) Engine SOLENOIDE FAN CPU Jupiter3 DEV_FUSE Crystal 10MHz Mai n Clock LSU FS781BZB Video Osci l lator Clock 44 MHz MHV 4 LED MHVPWM 3 KEY SMPS SDRAM S3C46M0X PANEL B' D +24V POWER SWI TCH BIASPWM THVPWM OPC GND BUFFER HVPS B' D SUPPLY DEV TH V Samsung Electronics 6-1 Block Diagram 6-2. Block Diagram(PCL) MAIN Oscillator 48 MHz +5V USB PC IEEE 1284 CABLE USB Driver USBN9602-28M FLASH MEMORY (2MB) VOLTAGE DETECTOR PANEL B' D Oscillator 44 MHz Main Clock +24V IN-LET EXIT SENSOR POWER CORD MOTOR ( 4 MB) Engine SOLENOID Option Up to 68MB FAN DEV_FUSE 74HCT273 S3C46C0X01 74ACT273 LSU Devided by 74HC406ON Video Clock Crystal 6.7149 MHz 4 LED MHV OPC GND 3 KEY MHVPWM HVPS BIASPWM B' D THVPWM 6-2 SMPS SDRAM Power On Reset CPU Oscillator 20 MHz POWER SWITCH SUPPLY DEV TH V Samsung Electronics Connection Diagram 7. Connection Diagram 7-1. Connection Diagram(GDI) IEEE1284 COMPATI ABLE CABLE HOST COMPUTER DCU 1 2 3 4 USB CABLE +5V DCU_DATA DCU_CLK +5V GND SENSOR BOARD 1 2 3 4 +5V *PEMPTY * FEED +5V GND COVER SW ITCH 1 2 3 +24V Not Use d +24VS 36 PI N J1 CN9 4PI N CONNECTOR f or USB 1 2 3 4 CN13 1 2 3 4 5 6 7 8 9 CN6 1 2 +5V PTL 1 2 CN1 1 2 3 CN7 1 THERMI STOR 2 HV PS 1 2 3 4 5 6 7 8 9 +24V_T +24V GND THV PW M *THV_EA THVRE AD * M H VP WM BI ASPW M +5V +5V GND 1 2 Main Board CN11 1 2 3 4 5 6 7 8 9 CN12 CN8 1 2 3 4 5 1 2 3 4 5 6 +5V +5V GND LED_ERROR LED_PAPER LED_DATA LED_TONER * KEY_TONER * KEY_CANCEL * KEY_DEMO GDI 1 2 3 4 +24V_T +24V GND *PMOTOR +3. 3V EXT_C LK * HSYNC +5V +5V GND * LD_ON VDO +5V GND 1 2 3 4 5 6 7 8 9 CN3 CN5 THERM_A THERM_B 1 2 3 4 5 6 7 8 9 10 11 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 +5V GND +5V +5V GND +5V +5V GND +5V +24V GND +24V +24V GND +24V +24V GND +24V EXIT +24VS FUSER ON +24VS * EGMOT_B1 CLUTCH EGMOT_PHB FA N DEV_FUSE * EGMOT _A1 * NEW_DEVE EGMOT_PHA 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 POLYGON MOTOR LSU LD DIODE LED DISPLAY PANEL PTL LED ARRAY SMPS FUSER CN502 CN5 SOL ENOID ENGINE CN1 STEPPING MOTOR CN2 DEV_FUSE CN3 FAN CN4 ENGI NE + SMPS Unification B' d Samsung Electronics 7-1 Connection Diagram 7-2. Connection Diagram(PCL) IEEE1284 COMPATI ABLE CABLE HOST COMPUTER DCU 1 2 3 4 USB CABLE +5V DCU_DATA DCU_CLK +5V GND SENSOR BOARD 1 2 3 4 +5V PEMPTY * FEED_SENSOR* +5V GND COVER SW ITCH 1 2 3 +24V Not Use d +24VS 36 PI N J1 +24V_SLEEP +24V GND PMOTOR * LREADY* EXT_C LK HSYNC * +5V +5V GND LD_ON* VDO +5V GND 1 2 3 4 5 1 2 3 4 5 6 CN5 1 2 3 4 5 6 7 8 9 +5V +5V GND LED_ERROR LED_PAPER LED_DATA LED_TONER KEY_TONER* KEY_CANCEL* KEY_DEMO* 1 2 3 4 5 6 7 8 9 CN4 1 2 +5V PTL 1 2 CN12 4PI N CONNECTOR f or USB 1 2 3 4 1 2 3 4 1 2 3 CN7 CN9 PCL THERMI STOR HV PS 1 2 3 4 5 6 7 8 9 THERM_A THERM_B +24V_SLEEP +24V GND THV PW M THV_EN* THVRE AD M H VP WM* BI ASPW M +5V +5V GND 1 2 1 2 3 4 5 6 7 8 9 POLYGON MOTOR LSU LD DIODE LED DISPLAY PANEL PTL LEDARRAY Main Board CN6 CN8 CN3 1 2 1 2 3 4 5 6 7 8 9 10 11 CN11 CN2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 +5V GND +5V +5V GND +5V +5V GND +5V +24V GND +24V +24V GND +24V +24V GND +24V EXIT +24VS FUSER ON +24VS MOTOR B* CLUTCH MOTOR_PB FAN DEV_FUSE MOTOR_A* NEW_DVE* MOTOR_PA 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 SMPS FUSER CN502 CN5 SOL ENOID ENGINE CN1 STEPPING MOTOR CN2 DEV_FUSE CN3 FAN CN4 ENGI NE + SMPS Unification B' d 7-2 Samsung Electronics Repair Manual LASER PRINTER ML-1200 Series CONTENTS 1. Block Diagram 2. Connection Diagram 3. Schematic Diagrams Samsung Electronics 3 KEY 4 L ED P ANE L B' D PC IEEE 12 84 CABLE USB Osci l l ator 44 MHz VOL TAGE DETECT OR 74LVX161284 Li ne Transcei ver Vi deo Clock Po we r On Re s e t S3C46M0X C P U Jupiter3 MAIN THVPWM BI ASPW M BUFFER FS781BZB MHVP WM Mai n Clock Crystal 10MHz ( 8MB) SDRAM ( 0 .5MB) FLASH MEMORY B' D HV PS LSU EXI T SENSOR +24V +5V Eng i ne SMP S TH V DEV SUPPL Y OPC GND MHV I N- L ET POWER SWI TCH DEV_FUSE FAN SOLENOIDE MOTOR POWER CORD 1 BLOCK DIAGRAM 1. Block Diagram 1.1 GDI Block Diagram(ML-1210/ML-1220M) Repair Manual 1-1 1-2 3 KEY 4 L ED P ANE L B' D PC IEEE 12 84 CABLE USB Oscillator 44 MHz Oscillator 20 MHz VOLTAGE DETECTOR Video Clock Main Clock Power On Reset USB Driver USBN9602-28M Oscillator 48 MHz S3C46C0X01 CPU MAIN B' D BI ASPW M THVPWM HV PS LSU EXIT SENSOR +24V MHVP WM Crystal 6.7149 MHz Devided by 74HC406ON 74ACT273 74HCT273 Option Up to 68MB ( 4 MB) SDRAM (2MB) FLASH MEMORY +5V Eng i ne SMPS TH V DEV SUPPL Y OPC GND MHV IN-LET POWER SWITCH DEV_FUSE FAN SOLENOI D MOTOR POWER CORD BLOCK DIAGRAM 1.2 PCL Block Diagram(ML-1250) Repair Manual Samsung Electronics 2 CONNECTION DIAGRAM 2. Connection Diagram 2.1 GDI Connection Diagram(ML-1210/ML-1220M) IEEE1284 COMPATI ABLE CABLE HOST COMPUTER DCU 1 2 3 4 USB CABLE +5V DCU_DATA DCU_CLK +5V GND 36 PI N J1 CN9 SENSOR BOARD 1 2 3 4 COVER SWITCH 1 2 3 +24V Not Use d +24VS CONNECTOR f or USB 1 2 3 4 CN3 CN13 1 THERMI STOR 2 HV PS 1 2 3 4 5 6 7 8 9 +24V_T +24V GND THV PWM *THV_EA THVRE AD * M H VP WM BI ASPW M +5V +5V GND 1 2 3 4 5 1 2 3 4 5 6 1 2 3 4 1 2 3 1 2 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 +5V +5V GND LED_ERROR LED_PAPER LED_DATA LED_TONER * KEY_TONER * KEY_CANCEL * KEY_DEMO 1 2 3 4 5 6 7 8 9 1 +5V PTL 1 2 CN1 CN7 CN6 2 Main Board CN11 CN5 THERM_A THERM_B +24V_T +24V GND *PMOTOR +3. 3V EXT_C LK * HSYNC +5V +5V GND * LD_ON VDO +5V GND POLYGON MOTOR LSU LD DIODE 4PI N GDI +5V *PEMPTY * FEED +5V GND 1 2 3 4 5 6 7 8 9 10 11 CN12 CN8 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 +5V GND +5V +5V GND +5V +5V GND +5V +24V GND +24V +24V GND +24V +24V GND +24V EXIT +24VS FUSER ON +24VS * EGMOT_B1 CLUTCH EGMOT_PHB FA N DEV_FUSE * EGMOT _A1 * NEW_DEVE EGMOT_PHA 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 LED DISPLAY PANEL PTL LEDARRAY SMPS FUSER CN502 CN5 SOL ENOID ENGINE CN1 STEPPING MOTOR CN2 DEV_FUSE CN3 FAN CN4 ENGI NE + SMPS Unification B' d Repair Manual Samsung Electronics 2-1 CONNECTION DIAGRAM 2-2 PCL Connection Diagram(ML-1250) IEEE1284 COMPATI ABLE CABLE HOST COMPUTER USB CABLE 36 PI N CONNECTOR f or USB 1 2 3 4 SENSOR BOARD 1 2 3 4 +5V PEMPTY * FEED_SENSOR* +5V GND 1 2 3 4 COVER SW ITCH 1 2 3 +24V Not Use d +24VS 1 2 3 1 2 3 4 1 2 3 4 5 1 2 3 4 5 6 CN5 1 2 3 4 5 6 7 8 9 +5V +5V GND LED_ERROR LED_PAPER LED_DATA LED_TONER KEY_TONER* KEY_CANCEL* KEY_DEMO* 1 2 3 4 5 6 7 8 9 CN4 1 2 +5V PTL 1 2 CN12 CN7 CN9 PCL 1 THERMI STOR 2 HV PS 1 2 3 4 5 6 7 8 9 +24V_SLEEP +24V GND THV PWM THV_EN* THVRE AD M H VP WM* BI ASPW M +5V +5V GND LSU LD DIODE 1 2 1 2 3 4 5 6 7 8 9 LED DISPLAY PANEL PTL LEDARRAY Main Board CN6 CN8 CN3 THERM_A THERM_B POLYGON MOTOR 4PI N +5V DCU_DATA DCU_CLK +5V GND DCU J1 +24V_SLEEP +24V GND PMOTOR * LREADY* EXT_C LK HSYNC * +5V +5V GND LD_ON* VDO +5V GND 1 2 3 4 5 6 7 8 9 10 11 CN11 CN2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 +5V GND +5V +5V GND +5V +5V GND +5V +24V GND +24V +24V GND +24V +24V GND +24V EXIT +24VS FUSER ON +24VS MOTOR B* CLUTCH MOTOR_PB FAN DEV_FUSE MOTOR_A* NEW_DVE* MOTOR_PA 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 SMPS FUSER CN502 CN5 SOL ENOID ENGINE CN1 STEPPING MOTOR CN2 DEV_FUSE CN3 FAN CN4 ENGI NE + SMPS Unification B' d 2-2 Repair Manual Samsung Electronics 3 SCHEMATIC DIAGRAMS 3. Schematic Diagrams 3.1 GDI Main Circuit Diagram (1/5) Repair Manual Samsung Electronics 3-1 SCHEMATIC DIAGRAMS Main Circuit Diagram (2/5) 3-2 Repair Manual Samsung Electronics SCHEMATIC DIAGRAMS Main Circuit Diagram (3/5) Repair Manual Samsung Electronics 3-3 SCHEMATIC DIAGRAMS Main Circuit Diagram (4/5) 3-4 Repair Manual Samsung Electronics SCHEMATIC DIAGRAMS Main Circuit Diagram (5/5) Repair Manual Samsung Electronics 3-5 SCHEMATIC DIAGRAMS 3.2 PC L Main Circuit Diagram (1/9) 3-6 Repair Manual Samsung Electronics SCHEMATIC DIAGRAMS PCL Main Circuit Diagram (2/9) Repair Manual Samsung Electronics 3-7 SCHEMATIC DIAGRAMS PCL Main Circuit Diagram (3/9) 3-8 Repair Manual Samsung Electronics SCHEMATIC DIAGRAMS PCL Main Circuit Diagram (4/9) Repair Manual Samsung Electronics 3-9 SCHEMATIC DIAGRAMS PCL MainCircuit Diagram (5/9) 3-10 Repair Manual Samsung Electronics SCHEMATIC DIAGRAMS PCL Main Circuit Diagram (6/9) Repair Manual Samsung Electronics 3-11 SCHEMATIC DIAGRAMS PCL Main Circuit Diagram (7/9) 3-12 Repair Manual Samsung Electronics SCHEMATIC DIAGRAMS PCL Ma in Circuit Diagram (8/9) Repair Manual Samsung Electronics 3-13 SCHEMATIC DIAGRAMS PCL Main Circuit Diagram (9/9) 3-14 Repair Manual Samsung Electronics SCHEMATIC DIAGRAMS 3.3 HVPS Circuit Diagram (1/2) 5V 18V C402 103 R401 100 R403 110KF Q401 A708-Y MHV-PWM 3 CN1-#6 T401 KAB-006 R405 220KF R411 2.2K R422 5.6K 24VS R407 240K R404 33K 12 + 13 4 Q402 D526-Y 14 R426 MGR1/2W 100KF MHV R413 MGR1/2W 6MF 6 C405 2KV 680 R408 47K U1-D KA324 D401 4KV C404 3KV 471 7 5 2 - D111 1N4148 R402 56KF U2-B 7407 1 C406 3KV 471 D402 4KV R414 MGR1/2W 6MF 4 R412 2K C408 104 C401 222 R409 430 R406 2.2KF C403 333 VR401 50K OPC R410 1W 3 ZD401 1W 130V D403 1N4148 24VS 5V T501 KAB-006 18V R501 5.6K R503 100 R510 47K C503 104 R508 86.6KF Q502 D526-Y 1 CN1-#7 2 U2-A 7407 R507 27K R502 2.2K R505 100KF R506 100KF + 8 7 5 2 6 C502 222 VR501 50K R509 12KF R514 MGR1/2W 15MF R417 MGR1/2W 15MF R516 MGR1/2W 50K SUPPLY C505 2KV 680 C506 3KV 471 ZD501 1W 100V 4 R511 47K U1-C KA324 C501 104 R504 2K 9 10 D502 4KV 1 Q501 A708-Y BIAS-PWM R416 MGR1/2W 15MF C504 333 D501 1N4148 R515 MGR1/2W 15MF R512 430 DEV R519 MGR1/2W 50K R517 MGR1/2W 15MF R513 1W 3 CN1 GIL-S-9P-S2T2-EF 1 2 3 4 5 6 7 8 9 24VS A-GND THV-PWM THV-EA THV-READ MHV-PWM BIAS-PWM 5V D-GND 24VS U3 KA7818 IN OUT 18V + GND C1 104 C2 104 SAMSUNG ELECTRONICS TITLE SWALLOW-HVPS DESIGNED CHECKED APPROVED DRW. NO C3 35V 47uF REF. NO JC SIZE A4 DATE 01/01/04 REV. 1.0 JH.CHO 1 OF 2 Repair Manual Samsung Electronics 3-15 SCHEMATIC DIAGRAMS HVPS Circuit Diagram (2/2) T201 HVT-2A 24VS 5V 18V 1 C208 6KV 471 C206 6KV 471 7 D204 6KV R201 10K THV-PWM R206 100 13 CN1-#3 12 11 10 U2-F 7407 R205 1K U2-E 7407 24VS + Q204 D526-Y D201 1N4148 R208 30KF Q203 A708-Y 5 C201 103 R209 110KF R207 2K U1-B KA324 C101 35V 47uF VR201 50K C202 331 6 R210 510KF R213 2.2K 7 C209 6KV 471 C207 6KV 471 THV R212 470K C203 D203 472 1N4148 ZD201 5.6V R215 430 R216 BR1/2W 30MJ R218 MGR1/2W 100KF C204 473 ZD202 7.5V R217 BR1/2W 200MG 18V R3 1/2W 560 ZD1 5.6V 18V C7 104 R309 2.2K 14 CN1-#4 C205 6KV 101 D207 6KV 4 R211 1MF THV-EA 6 - R214 1.2K D202 1N4148 5V CN1-#8 + 5 2 D206 6KV D205 6KV 9 T301 KAB-006 Q301 A708-Y C307 3KV 471 1 7 5 2 6 D304 4KV 8 R315 BR1/2W 30MJ R307 33K 7 U2-C 7407 C306 2KV 680 Q303 D526-Y 18V D-GND 24VS D303 4KV C308 3KV 471 4 D301 1N4148 C4 104 R308 33K R310 2.2K 4 THV-READ + 1 R316 1KF CN1-#5 - U1-A KA324 Q302 A708-Y 3 2 R302 33K R303 100KF R306 26.1KF R304 200KF R314 2.2KF R311 100KF VR302 5K C305 333 11 C303 333 R317 2KF R305 5.1KF R301 470K C302 102 D302 1N4148 VR301 10K C301 222 C304 500V 103 SAMSUNG ELECTRONICS TITLE SWALLOW-HVPS DESIGNED CHECKED APPROVED DRW. NO REF. NO REV. JC 1.0 JH.CHO SIZE A4 3-16 DATE 01/01/04 2 OF 2 Repair Manual Samsung Electronics SCHEMATIC DIAGRAMS 3.4 SMPS Circuit Diagram (110V) R502 F501 1/2W 560K 125V 8A F502 LF501 125V 3A APOLLO12 LF502 APOLLO12 V501 SCK-054 T501 R518 C522 EER2828 22 1KV 102 CN501 R509 1W 82 3W 47K 104 C520 300uH C504 U502 104 R513 +24VS FB GND R512 330 6 10 NB N5 2.2K-F 50V 33uF PC501 R511 C513 1uF C515 7 1000uF R504 C518 K1010H 4.3K 10V 5 CN5-1,3,5 R515 U503 68K KA431 1 R521 R520 150 47K +5V 1.0A C517 104 EXIT CN5-14 R516 OP501 2.2K-F ITR8406-S PC501 1/2W 1.5K +5V 2A 223K R510 L502 D503 C510 1W 0.3 1KV 102 SB1040FCT C509 KMOC3063 104 10uH APOLLO12 1W 180 FUSIBLE PC502 C514 22 3 1/4W 100 R508 R514 30 4 C507 C519 5W 500 GND R507 ER102 5 VCC 3 BTA12-600 R503 DRAIN OCP U501 2 2 1 D501 B501 STRT-G6153 1 R519 CN5-8,10,12 2 333 11 3 D502 C521 UF1010 2KV 221K R506 CN502 N24 NP 1W 47K L501 1W 47 FUSIBLE CN5-7,9,11 +24V 1.8A 12 1 C512 R501 D504 ER1002FCT C511 C505 222MAD R517 10V 470uF FL406 C502 TNR502 C503 1W 47K 103 BD501 TNR501 R505 50V 1000uF + 224 - 50V 1000uF C508 222MAD 200V 470uF N C501 TVR 10D 561K TVR 14D 221K L F.G CN5-2,4,6 K1010H C506 GND 222MAD CN5-13,15 +24VS2 NO MARKING RESISTOR 1/4W-J (5%) 50V 47uF GND C1 U1 A2918SWH VBB VCC 5 2B 331 CN2 1 17 1 2 2 4 3 4 C2 RC2 E1 12 16 5 E2 2A SENSE2 1B VREF 1A +ENABLE1 +ENABLE2 GND PHASE1 PHASE2 RC1 14 7 SENSE1 13 8 +EGMOT_A1 +EGMOT_B1 +24VS +24V CN4 GND 11 EGMOT_PHA EGMOT_PHB CN5-16 C3 15 18 3 6 9 35303-0450 +5V 331 FAN 35301-0350 Q3 R13 2.2K D3 3 2 1 1N4003 C8 1N4003 50V 47uF FUSER_ON 1008-Y R2 CLUTCH R12 510 D2 CN1 2 1 35303-0250 Q1 1008-Y R1 5.6K 5.6K GND GND R7 GND 56K 1K C7 103 R6 GND 2W 0.37 331 R11 2W 0.37 R10 C5 1.2K R8 1K C6 R5 103 R15 56K C4 331 GND R9 17.4K-F GND Repair Manual Samsung Electronics 3-17 SCHEMATIC DIAGRAMS SMPS Circuit Diagram (220V) R502 F501 1/2W 560K 250V 5A F502 LF501 250V 2A APOLLO12 V501 LF502 T501 SCK-054 APOLLO12 R518 C522 22 1KV 102 EER2828 CN501 R509 1W 82 3W 47K CN5-7,9,11 C520 1W 100K 300uH C504 333 U502 1/4W 22 R513 FB 330 4 50V 33uF 5 R504 7 PC501 K1010H 4.3K N5 CN5-1,3,5 R515 2.2K-F R511 10 NB C518 C513 1uF C515 10V 1000uF 22K U503 KA431 1 R521 R520 150 47K +5V 1.0A C517 104 EXIT CN5-14 R516 OP501 2.2K-F ITR8406-S CN5-2,4,6 K1010H C506 GND 332MAD CN5-13,15 +24VS R512 PC501 1/2W 1.5K +5V 2A 223K 1W 0.6 L502 D503 C510 R510 1KV 102 SB1040FCT C509 KMOC3063 C514 22 10uH 6 PC502 R514 30 1W 180 FUSIBLE 104 104 GND APOLLO12 3 R508 C507 C519 5W 500 CN5-8,10,12 R507 ER102 5 VCC OCP BTA12-600 R503 DRAIN GND 1 U501 2 2 1 D501 B501 STRT-G6153 R519 3 1W 47 FUSIBLE CN502 11 3 D502 C521 UF1010 1KV 221K R506 L501 N24 NP 10V 470uF 104 +24V 1.8A 12 1 C512 R501 D504 ER1002FCT C511 C505 222MAD R517 2 FL406 C502 C503 1W 100K 103 BD501 TNR501 R505 50V 1000uF + 224 - 450V 150uF N C508 222MAD 50V 1000uF C501 TVR 10D 561K L F.G +24VS2 NO MARKING RESISTOR 1/4W-J (5%) 50V 47uF 5 331 1A PHASE1 PHASE2 1B CN2 1 17 1 2 2 4 3 4 C2 RC2 E1 12 16 5 SENSE2 2B E2 +ENABLE2 GND 2A VREF +ENABLE1 RC1 +EGMOT_A1 +EGMOT_B1 14 7 SENSE1 13 8 C1 U1 A2918SWH VBB VCC 11 +24V +24VS CN4 GND GND EGMOT_PHA EGMOT_PHB CN5-16 C3 35303-0450 +5V 331 15 18 3 6 9 FAN 3 2 1 35301-0350 Q3 R13 2.2K D3 1N4003 C8 1N4003 50V 47uF FUSER_ON 1008-Y R2 CLUTCH 2 1 35303-0250 Q1 R12 510 CN1 D2 1008-Y R1 5.6K 5.6K GND R7 GND 3-18 56K 1K C7 103 R8 R6 GND 1K 2W 0.37 331 R11 2W 0.37 R10 C5 1.2K R5 C6 103 R15 56K C4 331 R9 17.4K GND GND Repair Manual Samsung Electronics SCHEMATIC DIAGRAMS 3.5 Panel Circuit Diagram Repair Manual Samsung Electronics 3-19 This manual is made and described centering around circuit diagram and circuit description needed in the repair center in the form of appendix. Samsung Electronics Digital Printing CS Group Copyright (c) 2001. 10 Contents CONTENTS 1. Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page(1-1) 1-1 Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page(1-1) 1-2 Precautions on Disassembly and Reassembly . . . . . . . . . . . . . . .page(1-1) 1-3 Tools for Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page(1-2) 2. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page(2-1) 3. Disassembly and Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . .page(3-1) 3-1 Cover Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page(3-1) 3-2 LED Panel PBA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page(3-2) 3-3 LSU(Laser Scanning Unit) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page(3-2) 3-4 Transfer Roller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page(3-3) 3-5 Motor Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page(3-3) 3-6 HVPS Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page(3-4) 3-7 Fuser Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page(3-4) 3-8 Thermostat and Halogen Lamp . . . . . . . . . . . . . . . . . . . . . . . . . . .page(3-5) 3-9 SMPS Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page(3-6) 3-10 Main Board and Sensor Board . . . . . . . . . . . . . . . . . . . . . . . . . . .page(3-7) 4. Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page(4-1) 4-1 How to use DCU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page(4-2) 4-2 The cause and solution of Bad image . . . . . . . . . . . . . . . . . . . . . .page(4-5) 4-3 The cause and solution of the bad discharge. . . . . . . . . . . . . . . . .page(4-12) 4-4 The cause and solution of the malfunction . . . . . . . . . . . . . . . . . . .page(4-16) 4-5 Toner Cartridge Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page(4-21) 4-6 The cause and solutions of bad environment of the software . . . .page(4-25) 5. Exploded Views and Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . .page(5-1) 5-1 Expolded Views and Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . .page(5-2) 5-2 Front Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page(5-4) 5-3 Engine/Frame Lower Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . .page(5-6) 5-4 Fuser Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page(5-8) 5-5 Shield Engine Unit Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page(5-10) 5-6 RX Drive Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page(5-12) 5-7 Plate-Upper Unit Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page(5-14) 6. Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page(6-1) 6-1 Block Diagram(GDI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page(6-1) 6-2 Block Diagram(PCL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page(6-2) 7. Connection Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page(7-1) 7-1 Connection Diagram(GDI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page(7-1) 7-2 Connection Diagram(PCL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page(7-2) Samsung Electronics
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