Samsung SCX4521F Service Manual - Page 101

Multi-Feeding, Paper rolled in the Fuser, properly: Perform Engine Test Mode-Pick up Test.

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Troubleshooting 6.2.5 Multi-Feeding • Description Multiple sheets of paper are fed at once. Check and Cause 1. Solenoid malfunction(the solenoid does not work properly): Perform Engine Test Mode-Pick up Test. 2. Pad-Friction is contaminated with foreign matter.(oil...) 3. The face of paper is blended. Solution 1. Replace the solenoid if necessary. 2. Clean the pad friction with soft clothe dampened with IPA(Isopropyl Alcohol). 3. Use the smooth paper. 6.2.6 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 or heat roller (Background, Hot off set). 2. Check the claw of the fuser whether it is unfitted. Solution 1. After disassembling the fuser, clean contamination between the heat roller and the thermostor and remove the contamination of the pressure roller. 2. If there is heavy background, repair it by the background troubleshooting method. 3. The surface of the heat roller with IPA or water 4. Check the warp or separation of the sprint claw and the holder plate claw, and then manage it. 6-6 Service Manual Samsung Electronics

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Samsung Electronics
Service Manual
Troubleshooting
6-6
6.2.5
Multi-Feeding
• Description
Multiple sheets of paper are fed at once.
Check and Cause
Solution
1. Solenoid malfunction(the solenoid does not work
properly): Perform Engine Test Mode-Pick up Test.
2. Pad-Friction is contaminated with foreign matter.(oil...)
3. The face of paper is blended.
1. Replace the solenoid if necessary.
2. Clean the pad friction with soft clothe dampened
with IPA(Isopropyl Alcohol).
3. Use the smooth paper.
6.2.6
Paper rolled in the Fuser
• Description
If contaminated at intervals of 57mm on the back of a paper.
Check and Cause
Solution
1.
Contamination of the pressure roller or heat
roller (Background, Hot off set).
2.
Check the claw of the fuser whether it is unfit-
ted.
1.
After disassembling the fuser, clean contami-
nation between the heat roller and the ther-
mostor and remove the contamination of the
pressure roller.
2.
If there is heavy background, repair it by the
background troubleshooting method.
3. The surface of the heat roller with IPA or
water
4. Check the warp or separation of the sprint
claw and the holder plate claw, and then man-
age it.