Samsung ML-1440 Service Manual - Page 51

The cause and solution of the bad discharge - paper jam

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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 Wrong sense time caused by defective feed sensor actuator. Solution Replace the defective actuator Troubleshooting 4-3-2 JAM 0 EXIT2 • Description OUTBINFULLSEN FACE DOWN 1. Paper is not exited from the cassette. 2. Jam-0 occurs if the paper feeds into the printer. FACE UP LSU CARTRIDGE FUSER H/R EXIT1 Pr/R FEED SEN IDLE TR FEED PICK UP EMPTY SEN Check and Cause 1. Check the Solenoid by using DCU diagnostic mode 06. EXIT SEN CASSETTE JAM 0 2. Check if the pad is loose due to bad sealing of the side-pad. Solution 1. Replace the solenoid. 2. Replace the side-pad Assembly L or R, if necessary. 3. Check the surface of the roller-pickup for foreign matter. 3. Clean with soft cloth dampened with IPA(Isopropyl Alcohol) or water. 4. If continuous clusters occur, check whether the assembly slot between shaft-pickup and housing-pickup become open or is broken away. 5. If the paper feeds into the printer rand Jam 0 occurs, perform DCU to check feed-sensor of the engine board. 4. Replace the Housing-Pickup and/or Shaft-Pickup. Samsung Electronics 4-13

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Troubleshooting
4-13
Samsung Electronics
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
4-3-2
JAM 0
• Description
1. Paper is not exited from the cassette.
2. Jam-0 occurs if the paper feeds into the printer.
JAM 0
PICK UP
FEED
IDLE
EMPTY SEN
FEED SEN
TR
H/R
Pr/R
CASSETTE
EXIT SEN
EXIT1
EXIT1
Check and Cause
Solution
1. Check the Solenoid by using DCU
diagnostic mode 06.
2. Check if the pad is loose due to bad
sealing of the side-pad.
3. Check the surface of the roller-pick-
up 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.
5. If the paper feeds into the printer
rand Jam 0 occurs, perform DCU to
check feed-sensor of the engine
board.
1. Replace the solenoid.
2. Replace the side-pad Assembly L or
R, if necessary.
3. Clean with soft cloth dampened with
IPA(Isopropyl Alcohol) or water.
4. Replace the Housing-Pickup and/or
Shaft-Pickup.