Service Manual
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Disassembly and Reassembly 4. Exploded Views and Parts List 6. Block Diagram 7. Specifications 3. Connection Diagram Troubleshooting 5. LASER PRINTER ML-1440 SERVICE Manual LASER PRINTER CONTENTS 1. Precautions 2.
Disassembly and Reassembly 4. Exploded Views and Parts List 6. Block Diagram 7. Specifications 3. Connection Diagram Troubleshooting 5. LASER PRINTER ML-1440 SERVICE Manual LASER PRINTER CONTENTS 1. Precautions 2.
Service Manual
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Connection Diagram 3. Block Diagram 2. Schematic Diagrams Repair Manual SAMSUNG LASER PRINTER ML-1450Series ML-1440 CONTENTS 1.
Connection Diagram 3. Block Diagram 2. Schematic Diagrams Repair Manual SAMSUNG LASER PRINTER ML-1450Series ML-1440 CONTENTS 1.
Service Manual
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... Standard of Guarantee .....Page(4-22) 4-5-4 Signs and Measures at Poor toner cartridge Page(4-23) 4-6 The cause and solutions of bad environment of the software 4-6-1 The printer is not working (1)...........Page(4-26) 4-6-2 The printer is not working (2) .........Page(4-27) 4-6-3 Abnormal Printing Page(4-28) 4-6-4 SPOOL Error Page(4-29...
... Standard of Guarantee .....Page(4-22) 4-5-4 Signs and Measures at Poor toner cartridge Page(4-23) 4-6 The cause and solutions of bad environment of the software 4-6-1 The printer is not working (1)...........Page(4-26) 4-6-2 The printer is not working (2) .........Page(4-27) 4-6-3 Abnormal Printing Page(4-28) 4-6-4 SPOOL Error Page(4-29...
Service Manual
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...out of the Feed Sensor. The Toner Cartridge not installed, No paper in the fuser occurred. The printer is ready, the paper is detected when the first paper is printed. 00: Legal ,01: ...Feed sensor. The fuser power turned off 50 Paper Out 69 Sleep Mode The printer is on, the cover is jammed between the Discharge sensor and Feed sensor. The...8226; 62: Low Heat Error • 68: Over Heat Error The Printer Cover is stopped to the printer and turn the power on the panel and each code tells the function of...pin) of the printer. LSU Scanner Motor not ready or Hsync signal not output...
...out of the Feed Sensor. The Toner Cartridge not installed, No paper in the fuser occurred. The printer is ready, the paper is detected when the first paper is printed. 00: Legal ,01: ...Feed sensor. The fuser power turned off 50 Paper Out 69 Sleep Mode The printer is on, the cover is jammed between the Discharge sensor and Feed sensor. The...8226; 62: Low Heat Error • 68: Over Heat Error The Printer Cover is stopped to the printer and turn the power on the panel and each code tells the function of...pin) of the printer. LSU Scanner Motor not ready or Hsync signal not output...
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...terminal. Press the [Up] button to operate. If the LD is normal, all LEDs are on. 06 Pickup clutch on The Solenoid in the printer is in the DCU, press the button [Up] or [Shift] to select the self+test , and press the button of [Enter] to Check... LD. Troubleshooting 4-1-3 Self Diagnostic Mode If Error code occurs due to malfunction of the printer, perform Self Diagnostic Mode to switch the voltage. Samsung Electronics 4-3 Caution : High voltage probe should be used . 03 Transfer High Voltage (+)Reference on . Press the [Up] ...
...terminal. Press the [Up] button to operate. If the LD is normal, all LEDs are on. 06 Pickup clutch on The Solenoid in the printer is in the DCU, press the button [Up] or [Shift] to select the self+test , and press the button of [Enter] to Check... LD. Troubleshooting 4-1-3 Self Diagnostic Mode If Error code occurs due to malfunction of the printer, perform Self Diagnostic Mode to switch the voltage. Samsung Electronics 4-3 Caution : High voltage probe should be used . 03 Transfer High Voltage (+)Reference on . Press the [Up] ...
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... button pressed, vertical lines are printed. In this mode when the engine malfunction is in READY Mode, and '88' shows in the DCU and the printer is for a manufacturing process. You can test all diagnostic Codes(0~06). Troubleshooting 13 THV(+) TRIGGER. It is convenient to use this mode, without any detection... FACE UP LSU FUSER EXIT1 EXIT SEN H/R Pr/R CASSETTE CARTRIDGE PTL CR DR SR OPC FEED SEN IDLE TR FEED PICK UP EMPTY SEN SCF 4-4 Samsung Electronics If you push the 'Enter' button, the main motor runs (Diagnostic Code 00).
... button pressed, vertical lines are printed. In this mode when the engine malfunction is in READY Mode, and '88' shows in the DCU and the printer is for a manufacturing process. You can test all diagnostic Codes(0~06). Troubleshooting 13 THV(+) TRIGGER. It is convenient to use this mode, without any detection... FACE UP LSU FUSER EXIT1 EXIT SEN H/R Pr/R CASSETTE CARTRIDGE PTL CR DR SR OPC FEED SEN IDLE TR FEED PICK UP EMPTY SEN SCF 4-4 Samsung Electronics If you push the 'Enter' button, the main motor runs (Diagnostic Code 00).
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... 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. Samsung Electronics 4-5
... 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. Samsung Electronics 4-5
Service Manual
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... are not solved, replace the developer cartridge. 4-6 Samsung Electronics Dark black vertical band occur in the image. Foreign matter stuck onto the window of internal lenses of the transfer roller. 2. Straight thin black vertical line occurs in the Developer. Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Check and Cause 1. Foreign matter stuck onto...
... are not solved, replace the developer cartridge. 4-6 Samsung Electronics Dark black vertical band occur in the image. Foreign matter stuck onto the window of internal lenses of the transfer roller. 2. Straight thin black vertical line occurs in the Developer. Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Check and Cause 1. Foreign matter stuck onto...
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... the voltage terminals to print out. 5. In case of 38.5 mm interval unremovable in the printing periodically. (They may not occur periodically.) Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Check and Cause 1. Dark or blurry horizontal stripes occur in 1, take measures as to replace the developer cartridge and try to developer. 2. Bad... the toner particles and paper particles) 2. If a black image is partially broken, the transfer voltage is damaged. 2. If the roller's life is expired, replace it. 4. Samsung Electronics 4-7
... the voltage terminals to print out. 5. In case of 38.5 mm interval unremovable in the printing periodically. (They may not occur periodically.) Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Check and Cause 1. Dark or blurry horizontal stripes occur in 1, take measures as to replace the developer cartridge and try to developer. 2. Bad... the toner particles and paper particles) 2. If a black image is partially broken, the transfer voltage is damaged. 2. If the roller's life is expired, replace it. 4. Samsung Electronics 4-7
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No 2 : Wait 30 minutes after printer is below than 10°C. 2. Abnormal output from the HVPS. (Run self-test and check 1~4) 4. Replace the HVPS if not solved by the above direction 1 and 2. 4-8 Samsung Electronics Replace the HVPS if the problems are not solved by the.... 5. Solution 1. No charge voltage in the set. 3. Check if the Toner Save mode is almost consumed. Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Check and Cause 1. No 1 : Replace the developer cartridge and try to the bad contacts between the high voltage terminal...
No 2 : Wait 30 minutes after printer is below than 10°C. 2. Abnormal output from the HVPS. (Run self-test and check 1~4) 4. Replace the HVPS if not solved by the above direction 1 and 2. 4-8 Samsung Electronics Replace the HVPS if the problems are not solved by the.... 5. Solution 1. No charge voltage in the set. 3. Check if the Toner Save mode is almost consumed. Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Check and Cause 1. No 1 : Replace the developer cartridge and try to the bad contacts between the high voltage terminal...
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... the Developer if not solved by the above direction 1~3. Check and Cause 1. Occur in whole area of the transfer roller is swift? 4. Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Check and Cause 1. Clean the busing part of the Developer has expired. The pressure force on the developer roller due to the bad... level is not even on the left and right springs of the Developer has expired. Solution 1. The HVPS is not guaranteed when using recycled paper. 2. Samsung Electronics 4-9
... the Developer if not solved by the above direction 1~3. Check and Cause 1. Occur in whole area of the transfer roller is swift? 4. Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Check and Cause 1. Clean the busing part of the Developer has expired. The pressure force on the developer roller due to the bad... level is not even on the left and right springs of the Developer has expired. Solution 1. The HVPS is not guaranteed when using recycled paper. 2. Samsung Electronics 4-9
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... direction 3, check the has expired. Transfer roller lifetime(125,000 sheets) 4. Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer 96 mm Check and Cause 1. If not solved by contamination from toner particles between high... voltage terminal in the whole printing. Abnormal low temperature(below 10°C). 5. The life of developer is recommended. 4-10 Samsung...
... direction 3, check the has expired. Transfer roller lifetime(125,000 sheets) 4. Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer 96 mm Check and Cause 1. If not solved by contamination from toner particles between high... voltage terminal in the whole printing. Abnormal low temperature(below 10°C). 5. The life of developer is recommended. 4-10 Samsung...
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.... DDiiggiittaall PPrriinntteerr DDiiggiittaall PPrriinntteerr DDiiggiittaall PPrriinntteerr 70 mm Check and Cause The temperature of page will occur. 2. Replace the developer cartridge. 2. Samsung Electronics 4-11 Solution 1. Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Check and Cause 1. Toner leakage due to remove contamination. Troubleshooting 4-2-11 Ghost (3) • Description White ghost occurs in the developer cartridge...
.... DDiiggiittaall PPrriinntteerr DDiiggiittaall PPrriinntteerr DDiiggiittaall PPrriinntteerr 70 mm Check and Cause The temperature of page will occur. 2. Replace the developer cartridge. 2. Samsung Electronics 4-11 Solution 1. Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Check and Cause 1. Toner leakage due to remove contamination. Troubleshooting 4-2-11 Ghost (3) • Description White ghost occurs in the developer cartridge...
Service Manual
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... roller). If contaminated, clean the area not to code 06) 3. Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Check and Cause Bad ground contacts in OPC and/or developer. 2. When the printer turns on Back of Page • Description The back of the transfer roller... Blank Page Print out (2) • Description 1. Turn the power off, delete the data of PC and try printing again. 4-12 Samsung Electronics Perform the OPC Cleaning Mode Print 2 or 3 times. Blank page is contaminated. 2. Abnormal solenoid. Pressure roller is printed. And...
... roller). If contaminated, clean the area not to code 06) 3. Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Check and Cause Bad ground contacts in OPC and/or developer. 2. When the printer turns on Back of Page • Description The back of the transfer roller... Blank Page Print out (2) • Description 1. Turn the power off, delete the data of PC and try printing again. 4-12 Samsung Electronics Perform the OPC Cleaning Mode Print 2 or 3 times. Blank page is contaminated. 2. Abnormal solenoid. Pressure roller is printed. And...
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... the Housing-Pickup and/or Shaft-Pickup. Jam-0 occurs if the paper feeds into the printer rand Jam 0 occurs, perform DCU to bad sealing of the engine board. 4. Samsung Electronics 4-13 Solution Replace the defective actuator Troubleshooting 4-3-2 JAM 0 EXIT2 • Description OUTBINFULLSEN FACE DOWN 1. Check the Solenoid by defective feed sensor actuator...
... the Housing-Pickup and/or Shaft-Pickup. Jam-0 occurs if the paper feeds into the printer rand Jam 0 occurs, perform DCU to bad sealing of the engine board. 4. Samsung Electronics 4-13 Solution Replace the defective actuator Troubleshooting 4-3-2 JAM 0 EXIT2 • Description OUTBINFULLSEN FACE DOWN 1. Check the Solenoid by defective feed sensor actuator...
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.../R IDLE TR FEED PICK UP EMPTY SEN Check and Cause Solution 1. Reassemble the Actuator-Feed and Spring-Actuator if the returning is EXIT SEN the printer, but Jam 2 occurs : Exit defective. If the paper is rolled in the Fuser Roller: • This occurs when a Guide claw is jammed in the fuser...'s operation. 2. If the paper is jammed in the fuser : disassemble the fuser and remove the jammed paper, and clean the surface of the exit. 4-14 Samsung Electronics
.../R IDLE TR FEED PICK UP EMPTY SEN Check and Cause Solution 1. Reassemble the Actuator-Feed and Spring-Actuator if the returning is EXIT SEN the printer, but Jam 2 occurs : Exit defective. If the paper is rolled in the Fuser Roller: • This occurs when a Guide claw is jammed in the fuser...'s operation. 2. If the paper is jammed in the fuser : disassemble the fuser and remove the jammed paper, and clean the surface of the exit. 4-14 Samsung Electronics
Service Manual
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... Open S/W Connect. 3. Replace the hook lever, if defective. 2. Check the insertion of the cover switch department in the Main Control board. Samsung Electronics 4-19 Check the connector(CN8) and circuit of the Cover Open Error Solution 1. Replace the Main Control board or Cover Open S/W. Check ... the related codes of the Cover Open S/W Connect. 2. Troubleshooting 4-4-6 Cover Open • Description The ERROR lamp is on even when the printer cover is open • Description The ERROR lamp does not come on even when the print cover is open Check and Cause 1.
... Open S/W Connect. 3. Replace the hook lever, if defective. 2. Check the insertion of the cover switch department in the Main Control board. Samsung Electronics 4-19 Check the connector(CN8) and circuit of the Cover Open Error Solution 1. Replace the Main Control board or Cover Open S/W. Check ... the related codes of the Cover Open S/W Connect. 2. Troubleshooting 4-4-6 Cover Open • Description The ERROR lamp is on even when the printer cover is open • Description The ERROR lamp does not come on even when the print cover is open Check and Cause 1.
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... on . Replace the SMPS, if necessary. 4-4-9 No Power • Description When system power is not driving when printing, and paper does not feed into the printer, resulting 'Jam 0'. Check the inferiority of Panel does not appear after normal warmingup. 2. Perform DCU diagnostic code 00 and Check the motor operation. 2. Solution 1. Solution...
... on . Replace the SMPS, if necessary. 4-4-9 No Power • Description When system power is not driving when printing, and paper does not feed into the printer, resulting 'Jam 0'. Check the inferiority of Panel does not appear after normal warmingup. 2. Perform DCU diagnostic code 00 and Check the motor operation. 2. Solution 1. Solution...
Service Manual
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...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 image is not printed... a new developer after using about 2 seconds, the toner inside the developer has been nearly exhausted.( Purchase and replace with a new developer. Samsung Electronics 4-23 All of 1, 2, 3 aboveIf it cannot be recycled. 3. Toner is fallen on the whole screen or partly : Check the...
...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 image is not printed... a new developer after using about 2 seconds, the toner inside the developer has been nearly exhausted.( Purchase and replace with a new developer. Samsung Electronics 4-23 All of 1, 2, 3 aboveIf it cannot be recycled. 3. Toner is fallen on the whole screen or partly : Check the...
Service Manual
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... Mode Print 4-5 times repeatedly to remove. In case of 96mm - Troubleshooting Fault White Black spot Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Signs Cause & Check Solution • Light or dark black 1. Replace the developer according to use, it... is normal. 2. Exchange the transfer roller because the life of the developer, such as the recycled developer. 4-24 Samsung...
... Mode Print 4-5 times repeatedly to remove. In case of 96mm - Troubleshooting Fault White Black spot Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Signs Cause & Check Solution • Light or dark black 1. Replace the developer according to use, it... is normal. 2. Exchange the transfer roller because the life of the developer, such as the recycled developer. 4-24 Samsung...