Canon FAX-L1000 - Manual (Page 443)

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FAX-L1000 Chapter 5: Appendix
3.4.4 Maintenance and service
a) Troubleshooting
a-1) Paper jam troubleshooting
<Possible causes>
1.Warped or twisted envelope
Action: Straighten the warped or twisted envelope, and then instruct the user.
2. Defective FAX-L1000 Printer kit
Action: Make a test print from the envelope feeder. If the envelope is picked up
correctly, replace the FAX-L1000 Printer kit.
3. Dirty, worn or deformed envelope pickup roller
Action: Clean the pickup roller if dirty. Replace it if worn or deformed.
4. Damaged gears
Action: Check the gears of envelope feeder, and replace any damaged gears.
5. Defective envelope pickup solenoid
Action: Disconnect the envelope pickup solenoid connector J901 from the envelope
feeder driver PCB. Measure the resistance between cable side connector J902-1 and J902-
2. If it is not about 129
Ω
, replace the envelope pickup solenoid.
6. Defective envelope feeder driver PCB
Action: Replace the envelope feeder driver PCB.
7. Defective ECNT board
Action: Replace the ECNT board.
8. Defective SCNT board
Action: Replace the SCNT board.
9. Defective TWINS board
Action: Replace the TWINS board.
10. Defective FAX-L1000 Printer kit
Action: Replace the FAX-L1000 Printer kit.