Service Manual
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LASER PRINTER ML-1440 SERVICE Manual LASER PRINTER CONTENTS 1. Disassembly and Reassembly 4. Connection Diagram Exploded Views and Parts List 6. Troubleshooting 5. Precautions 2. Specifications 3. Block Diagram 7.
LASER PRINTER ML-1440 SERVICE Manual LASER PRINTER CONTENTS 1. Disassembly and Reassembly 4. Connection Diagram Exploded Views and Parts List 6. Troubleshooting 5. Precautions 2. Specifications 3. Block Diagram 7.
Service Manual
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... blinking (Fuser Error)........Page(4-17) 4-4-2 All LEDs blinking (SCAN ERROR) .Page(4-17) 4-4-3 Not function of the gear of the fuser due to melting away Page(4-18) 4-4-4 Paper Empty Page(4-18) 4-4-5 Paper Empty without indication.......Page(4-18) 4-4-6 Cover Open Page(4-19) 4-4-7 No lamp on when the cover is open Page(4-19) 4-4-8 Defective motor operation Page(4-20) 4-4-9 No Power Page(4-20) 4-4-10 Vertical Line Getting Curved .........Page(4-21) 4-5 Toner Cartridge Service 4-5-1 Precautions on Safe-keeping of Toner Cartridge Page(4-22) 4-5-2 Service for the Life of Toner Cartridge...
... blinking (Fuser Error)........Page(4-17) 4-4-2 All LEDs blinking (SCAN ERROR) .Page(4-17) 4-4-3 Not function of the gear of the fuser due to melting away Page(4-18) 4-4-4 Paper Empty Page(4-18) 4-4-5 Paper Empty without indication.......Page(4-18) 4-4-6 Cover Open Page(4-19) 4-4-7 No lamp on when the cover is open Page(4-19) 4-4-8 Defective motor operation Page(4-20) 4-4-9 No Power Page(4-20) 4-4-10 Vertical Line Getting Curved .........Page(4-21) 4-5 Toner Cartridge Service 4-5-1 Precautions on Safe-keeping of Toner Cartridge Page(4-22) 4-5-2 Service for the Life of Toner Cartridge...
Service Manual
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... error in the paper cassette. The Toner Cartridge not installed, No paper in the fuser occurred. Error Code When detecting the malfunction, the printing is open . Troubleshooting 4-1 How to use DCU 4-1-1 DCU Setup You can examine the malfunction of the Feed Sensor. The paper has passed out of the printer. The fuser power turned off 50 Paper Out 69 Sleep Mode The printer is jammed between pickup unit and Feed sensor. The front part of paper is on the panel and each code...
... error in the paper cassette. The Toner Cartridge not installed, No paper in the fuser occurred. Error Code When detecting the malfunction, the printing is open . Troubleshooting 4-1 How to use DCU 4-1-1 DCU Setup You can examine the malfunction of the Feed Sensor. The paper has passed out of the printer. The fuser power turned off 50 Paper Out 69 Sleep Mode The printer is jammed between pickup unit and Feed sensor. The front part of paper is on the panel and each code...
Service Manual
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...-test mode to clean the OPC Drum in operation, the right LED of [Down], [Shift] and [Stop] at the same time. LD is functioning and the middle button is on and -650 voltage output by each HV terminal(-500V). Samsung Electronics 4-3 Turn the power off to Check LD. Caution : High voltage probe should be used . 04 DEV/supply High Voltage : DEV/Supply High Voltage Test. The printer works...
...-test mode to clean the OPC Drum in operation, the right LED of [Down], [Shift] and [Stop] at the same time. LD is functioning and the middle button is on and -650 voltage output by each HV terminal(-500V). Samsung Electronics 4-3 Turn the power off to Check LD. Caution : High voltage probe should be used . 04 DEV/supply High Voltage : DEV/Supply High Voltage Test. The printer works...
Service Manual
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... this mode, without any detection, the printer begins printing(trial printing and data from the PC). After warming-up . It is convenient to use this button, '89' shows in operation. When you push the 'up' botton, the current diagnostic Code stops, and the next diagnostic Code starts. 4-1-4 Self Test Button If the Self-Test button pressed, vertical lines are printed. You can test all diagnostic Codes(0~06). Turn the power...
... this mode, without any detection, the printer begins printing(trial printing and data from the PC). After warming-up . It is convenient to use this button, '89' shows in operation. When you push the 'up' botton, the current diagnostic Code stops, and the next diagnostic Code starts. 4-1-4 Self Test Button If the Self-Test button pressed, vertical lines are printed. You can test all diagnostic Codes(0~06). Turn the power...
Service Manual
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...) 22 PRINT START (2'nd CASSETTE) 40 FEED SENSOR 2'st ON 50 PAPER OUT 60 OPEN FUSER ERROR 62 LOW HEAT ERROR 68 OVERHEAT ERROR 61 WARM UP 64 COVER OPEN ERROR 65 CRU ERROR 69 SLEEP MODE 70 NO PAPERR or CASSETTE 71 PAPER JAM 0 72 PAPER JAM 1 73 PAPER JAM 2 76 OUTBIN FULL ERROR 90 MANUAL PRINT MODE 95 LSU NOT READY DCU MODE DOWN UP SHIFT STOP ENTER O ENTER DIAGNOSTIC MODE, PUSH THREE BUTTONS SIMUL ANEOUSL THE PRINTER POWER ON.
...) 22 PRINT START (2'nd CASSETTE) 40 FEED SENSOR 2'st ON 50 PAPER OUT 60 OPEN FUSER ERROR 62 LOW HEAT ERROR 68 OVERHEAT ERROR 61 WARM UP 64 COVER OPEN ERROR 65 CRU ERROR 69 SLEEP MODE 70 NO PAPERR or CASSETTE 71 PAPER JAM 0 72 PAPER JAM 1 73 PAPER JAM 2 76 OUTBIN FULL ERROR 90 MANUAL PRINT MODE 95 LSU NOT READY DCU MODE DOWN UP SHIFT STOP ENTER O ENTER DIAGNOSTIC MODE, PUSH THREE BUTTONS SIMUL ANEOUSL THE PRINTER POWER ON.
Service Manual
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... developer cartridge, replace the developer and try to the position of LSU and clean with a clean cotton swab. 2. Dark black vertical band occur in the LSU : Open the cover of the voids. Partly depression or deformation on the window of Bad image 4-2-1 Vertical Black Line and Band • Description 1. Foreign matter stuck onto the window of internal lenses of the transfer roller. 2. No. 4. : Open the front cover and check...
... developer cartridge, replace the developer and try to the position of LSU and clean with a clean cotton swab. 2. Dark black vertical band occur in the LSU : Open the cover of the voids. Partly depression or deformation on the window of Bad image 4-2-1 Vertical Black Line and Band • Description 1. Foreign matter stuck onto the window of internal lenses of the transfer roller. 2. No. 4. : Open the front cover and check...
Service Manual
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... set against the paper particles and foreign matter in 1, take measures as to replace the developer cartridge and try to cause the trouble. If the malfunction persists, replace the developer. 4-2-4 Black/White Spot • Description 1. If the roller's life is abnormal or the transfer roller's life has expired. 3. Samsung Electronics 4-7 Dark or blurry horizontal stripes occur in the printing. Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Check...
... set against the paper particles and foreign matter in 1, take measures as to replace the developer cartridge and try to cause the trouble. If the malfunction persists, replace the developer. 4-2-4 Black/White Spot • Description 1. If the roller's life is abnormal or the transfer roller's life has expired. 3. Samsung Electronics 4-7 Dark or blurry horizontal stripes occur in the printing. Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Check...
Service Manual
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... Printer Digital Printer Digital Printer Digital Printer Check and Cause 1. Clean the high voltage charge terminal. 2. Develop roller is dark. Replace the HVPS if the problems are not solved by the toner stains between power supply in the side of the Developer and charge terminal of HVPS. Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Check and Cause 1. Ambient temperature is off. 2. Troubleshooting 4-2-5 Light Image • Description The printed image is not turned...
... Printer Digital Printer Digital Printer Digital Printer Check and Cause 1. Clean the high voltage charge terminal. 2. Develop roller is dark. Replace the HVPS if the problems are not solved by the toner stains between power supply in the side of the Developer and charge terminal of HVPS. Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Check and Cause 1. Ambient temperature is off. 2. Troubleshooting 4-2-5 Light Image • Description The printed image is not turned...
Service Manual
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.... Solution 1. Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Check and Cause 1. Replace the Developer if not solved by the above direction 1~3. Troubleshooting 4-2-7 Uneven Density • Description Print density is normal? (Perform DCU diagnostic code 01~04) 3. Samsung Electronics 4-9 Occur in whole area of the transfer roller. 4. The toner level is not guaranteed when using recycled paper. 2. Clean the busing part of the printing. Replace the Developer that...
.... Solution 1. Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Check and Cause 1. Replace the Developer if not solved by the above direction 1~3. Troubleshooting 4-2-7 Uneven Density • Description Print density is normal? (Perform DCU diagnostic code 01~04) 3. Samsung Electronics 4-9 Occur in whole area of the transfer roller. 4. The toner level is not guaranteed when using recycled paper. 2. Clean the busing part of the printing. Replace the Developer that...
Service Manual
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... mm Check and Cause 1. Troubleshooting 4-2-9 Ghost (1) • Description Ghost occurs at 96 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 96 mm Check and Cause When printing on before using returning to the original mode is recommended. 4-10 Samsung Electronics Occur in the developer. 6. transfer roller lifetime and replace...
... mm Check and Cause 1. Troubleshooting 4-2-9 Ghost (1) • Description Ghost occurs at 96 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 96 mm Check and Cause When printing on before using returning to the original mode is recommended. 4-10 Samsung Electronics Occur in the developer. 6. transfer roller lifetime and replace...
Service Manual
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... test using DCU to be deformed. • Description Blank page is printed. 2. Run Self-Test to code 06) 3. And check the area between H/R and Thermistor. Bad ground contacts in OPC and/or developer. 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. 4-12 Samsung Electronics Transfer roller is normal.(refer to remove...
... test using DCU to be deformed. • Description Blank page is printed. 2. Run Self-Test to code 06) 3. And check the area between H/R and Thermistor. Bad ground contacts in OPC and/or developer. 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. 4-12 Samsung Electronics Transfer roller is normal.(refer to remove...
Service Manual
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... circuit of the Cover Open Error. Replace the Main Control board or Cover Open S/W. Check the connector(CN8) and circuit of the Cover Open Error Solution 1. Troubleshooting 4-4-6 Cover Open • Description The ERROR lamp is on even when the printer cover is closed. Check the insertion of the Cover Open S/W Connect. 3. Check the insertion of the Cover Open S/W Connect. 2. Solution 1. Check and Cause 1. Perform DCU mode : If Error state '64' occurs, Check the related codes of the cover switch department in the...
... circuit of the Cover Open Error. Replace the Main Control board or Cover Open S/W. Check the connector(CN8) and circuit of the Cover Open Error Solution 1. Troubleshooting 4-4-6 Cover Open • Description The ERROR lamp is on even when the printer cover is closed. Check the insertion of the Cover Open S/W Connect. 3. Check the insertion of the Cover Open S/W Connect. 2. Solution 1. Check and Cause 1. Perform DCU mode : If Error state '64' occurs, Check the related codes of the cover switch department in the...
Service Manual
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... 200 sheets at Poor toner cartridge Fault Signs Cause & Check Solution Light image and partially blank image (The life is ended.) Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer • The printed image is light or unclean and untidy. • Some part of the OPC drum are stuck to the terminal (contact point) of the developer. (2)Check whether the state of the developer. 4. Toner Contamination • Toner is fallen on the papers...
... 200 sheets at Poor toner cartridge Fault Signs Cause & Check Solution Light image and partially blank image (The life is ended.) Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer • The printed image is light or unclean and untidy. • Some part of the OPC drum are stuck to the terminal (contact point) of the developer. (2)Check whether the state of the developer. 4. Toner Contamination • Toner is fallen on the papers...
Service Manual
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... you use windows, check if the printer driver in the Windows. Check if the printer cable is directly connected to check the function of CMOS is not working in the controller is to open the memo pad to peripheral devices 4. Troubleshooting 4-6 The cause and solutions of bad environment of the remaining tone. (refer to Toner Cartridge Service 4-5) 3. Solution 1.Check the power of software). Check and Cause 1. Run Self-Test Mode: Turn the power on ECP. Printing is nor working...
... you use windows, check if the printer driver in the Windows. Check if the printer cable is directly connected to check the function of CMOS is not working in the controller is to open the memo pad to peripheral devices 4. Troubleshooting 4-6 The cause and solutions of bad environment of the remaining tone. (refer to Toner Cartridge Service 4-5) 3. Solution 1.Check the power of software). Check and Cause 1. Run Self-Test Mode: Turn the power on ECP. Printing is nor working...
Service Manual
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... cable and printer port is enough space in CMOS is not printing, the cable or the printer driver may be defective so replace the cable with the message 'insufficient printer memory' means hard disk space problem rather than malfunction of the printer itself. Check and Cause 1. Printing error occurs even if there is not proper. In this time again. If not solved, double-click the printer in the CMOS Setup. 3. Samsung Electronics 4-27 Troubleshooting 4-6-2 The printer...
... cable and printer port is enough space in CMOS is not printing, the cable or the printer driver may be defective so replace the cable with the message 'insufficient printer memory' means hard disk space problem rather than malfunction of the printer itself. Check and Cause 1. Printing error occurs even if there is not proper. In this time again. If not solved, double-click the printer in the CMOS Setup. 3. Samsung Electronics 4-27 Troubleshooting 4-6-2 The printer...
Service Manual
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... 2-1 Specifications Specifications Engine Controller Paper Toner Periodic Replacing Parts User interface Environment Speed Resolution First Print Time Warm-Up Time Power Consump. Dimension(W * D * H) Weight Acoustic Noise Power Rating Processor Memory Emulation Interface OS Support RAM ROM EEPROM N/W Input Output Media Type Cassette Face down Face up Type Life Pick up Roller Feed Roller Transfer Roller Fuser Key & LED LCD Toner Save Reprint Operation Environment Temperature Humidity Storage Environment Temperature Humidity 15 PPM(Letter) , 14 PPM(A4) True 600 X 600 dpi Tray...
... 2-1 Specifications Specifications Engine Controller Paper Toner Periodic Replacing Parts User interface Environment Speed Resolution First Print Time Warm-Up Time Power Consump. Dimension(W * D * H) Weight Acoustic Noise Power Rating Processor Memory Emulation Interface OS Support RAM ROM EEPROM N/W Input Output Media Type Cassette Face down Face up Type Life Pick up Roller Feed Roller Transfer Roller Fuser Key & LED LCD Toner Save Reprint Operation Environment Temperature Humidity Storage Environment Temperature Humidity 15 PPM(Letter) , 14 PPM(A4) True 600 X 600 dpi Tray...
Service Manual
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... SERVICE THE PRINTER WITH THE PROTECTIVE COVER REMOVED FROM LASER/SCANNER ASSEMBLY. NIGHT DEM STRAHL AUSSETZEN. If you need to rest on the cords. 6. Use only standard papers, OHP films, and approved envelopes. Do not expose the drum unit to prevent any of an electrical outlet. 8. See specifications for ventilation. If you are provided for approved papers and envelopes. 15. Feed OHP films though the manual feed...
... SERVICE THE PRINTER WITH THE PROTECTIVE COVER REMOVED FROM LASER/SCANNER ASSEMBLY. NIGHT DEM STRAHL AUSSETZEN. If you need to rest on the cords. 6. Use only standard papers, OHP films, and approved envelopes. Do not expose the drum unit to prevent any of an electrical outlet. 8. See specifications for ventilation. If you are provided for approved papers and envelopes. 15. Feed OHP films though the manual feed...
Service Manual
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... power plug, printer cable from the part to light. 2. Pull out paper cassette, printer cartridge installed. Protect the LSU window with plastic latches. Please do the following before disassembling for replacing parts into the proper place if you uncover and turn the machine over to be taken when replacing parts. Especially careful not to replace some parts, toner or paper particles may contaminate the LSU window. Use only the same type of part...
... power plug, printer cable from the part to light. 2. Pull out paper cassette, printer cartridge installed. Protect the LSU window with plastic latches. Please do the following before disassembling for replacing parts into the proper place if you uncover and turn the machine over to be taken when replacing parts. Especially careful not to replace some parts, toner or paper particles may contaminate the LSU window. Use only the same type of part...
Service Manual
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...). 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. 7 Cleaning Equipments a IPA(Isopropyl Alcohol)dry cloth or a soft stuff neutral detergent. 3 Electronic Scale Standard: Equipment to check the weight of consumables(toner cartridge) supplied by Samsung Electronics. (The gram unit can be measured.) 8 Software(Driver) installation CD ROM Samsung Electronics Mind...
...). 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. 7 Cleaning Equipments a IPA(Isopropyl Alcohol)dry cloth or a soft stuff neutral detergent. 3 Electronic Scale Standard: Equipment to check the weight of consumables(toner cartridge) supplied by Samsung Electronics. (The gram unit can be measured.) 8 Software(Driver) installation CD ROM Samsung Electronics Mind...