Canon FAX L1000 Service Manual page 324

FAX-L1000 Chapter 4: Maintenance and Service
Faulty registration
Solution: (1) Check if more than the regulation amount of recording paper is loaded
Poor fixing
Solution: (1) Check the nip width of the fixing ass'y. If it is not as specified, replace
Distortion / nBD signal failure
Solution: (1) Check the laser/scanner unit (J401, J501, J551) and ECNT board (J53)
Partially compressed/stretched image
Solution: (1) Check the foreign matter between the toner cartridge gear and the
in the cassette.
(2) Clean the cassette pickup roller.
(3) Clean the multi-purpose tray pickup roller.
(4) Clean the feed roller.
(5) Adjust the leading edge margin as explained in this Chapter, 4.4
Leading edge margin adjustment .
(6) Replace the pickup roller.
(7) Replace the multi-purpose tray pickup roller.
(8) Replace the feed roller.
(9) Re-adjust the leading edge margin as explained in this Chapter, 4.4
Leading edge margin adjustment .
(10) Replace the ECNT board.
the fixing ass'y.
(2) If the dirts are at intervals of approx. 2.95" (75 mm), clean the fixing
film unit.
(3) If the dirts are at intervals of approx. 2.48" (63 mm), clean the fixing
pressure roller.
(4) Replace the fixing film unit.
(5) Replace the fixing pressure roller.
connections.
(2) Replace the laser/scanner unit.
(3) Replace the ECNT board.
printer drive gear.
(2) Check if the toner cartridge gear is not broken.
(3) Replace the toner cartridge.
4-72