Ricoh Aficio BP20N, Service Manual

Page: 91 / 144

PAPER FEED PROBLEMS
SM 4-17 G144/G145
Trouble-
shooting
4.7 PAPER FEED PROBLEMS
4.7.1 INCORRECT PRINT POSITION
Description: The print job starts even though the paper is not in the correct feed
position.
Cause Solution
Defective feed sensor actuator Replace the defective actuator
4.7.2 JAM 0
Description:
1) Paper does not exit from the feed cassette.
2) Jam 0 appears when the paper feeds into the printer.
Cause Solution
1. Defective solenoid. Check the solenoid in
Tech Mode.
2. Defective cassette/by-pass knock-up
plate and springs.
3. Defective paper separator pad.
4. Pick-up roller may be contaminated or
incorrectly installed.
5. The area between the pick-up roller and
registration sensor may be contaminated.
6. Feed sensor may be defective. Verify in
Tech Mode.
1. Replace the solenoid.
2. Repair/replace as required.
3. Clean with a soft cloth dampened with
isopropyl alcohol or water. Replace if
necessary.
4. Clean with a soft cloth dampened with
isopropyl alcohol or water. Replace if
necessary.
5. Ensure all rollers are clean.
6. Check the SMPS PBA, Main PBA, and all
connectors. Replace any faulty
components.
4.7.3 JAM 1
Description:
1) Paper becomes jammed in front of, or inside, the fusing unit.
2) Paper becomes jammed in the discharge roller and in the fusing unit, after it
passes through the actuator feed.
Cause Solution
1. Paper becomes jammed in front of, or
inside, the fusing unit.
2. Feed actuator may be defective.
1. Replace the SMPS.
2. Disassemble and then reassemble the
actuator feed and spring.