Canon FAX L1000 Service Manual page 321

All black
Solution: (1) Clean the high-voltage terminal and the toner cartridge contact.
(2) Replace the toner cartridge.
(3) Replace the ECNT board.
Dots
Solution: (1) Clean the static charge eliminator with brush.
(2) Clean the transfer charging roller.
(3) Clean the transfer charging roller shaft contact.
(4) Check the contact between the static charge eliminator and the ECNT
board.
(5) Check the contact between the transfer charging roller shaft and the
ECNT board.
(6) Replace the transfer charging roller.
(7) Replace the ECNT board.
Marks on back of paper
Solution: (1) Copy a few white paper documents.
(2) If the marks is at intervals of approx. 2.97" (75 mm), clean the cassette
feed roller.
(3) If the marks is at intervals of approx. 1.97" (50 mm), clean the feed
roller and the pre-transfer roller.
(4) If the marks is at intervals of approx. 1.85" (47 mm), clean the transfer
charging roller.
(5) If the marks is at intervals of approx. 2.48" (63 mm), clean the fixing
pressure roller.
(6) Clean the paper feed belt.
(7) Clean the paper feed guide.
(8) Clean the fixing entrance guide.
(9) Replace the cassette feed roller.
(10) Replace the feed roller.
(11) Replace the pre-transfer roller.
(12) Replace the transfer charging roller.
(13) Replace the fixing pressure roller.
FAX-L1000 Chapter 4: Maintenance and Service
4-69