Canon FAX-L1000 - Manual (Page 433)

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FAX-L1000 Chapter 5: Appendix
3.3.5 Maintenance and service
a) Troubleshooting
The fax main unit does not detect that the PAPER FEED UNIT PF-52 is mounted.
Solutions: (1) Check the connection between the main unit and the paper size
detection board 2.
(2) Check the connection between J811, J812 on the paper feeder
connector and J801 on the paper size detection board 2.
(3) Check the connection between J104, J105 on the paper feeder
connector and J601 on the paper size detection board 1.
(4) Check the connection between J72 on the ECNT board and J603 on the
paper size detection board 1.
(5) Replace the paper size detection board 2.
(6) Replace the paper size detection board 1.
(7) Replace the ECNT board.
Recording paper is not picked up.
Solutions: (1) Check the connection between the main unit and the paper size
detection board 1.
(2) Check the connection between J811, J812 on the paper feeder
connector and J801 on the paper size detection board 2.
(3) Check the connection between J104, J105 on the paper feeder
connector and J601 on the paper size detection board 1.
(4) Clean the rollers (cassette pick-up roller, cassette separation roller and
feed roller) if dirty.
(5) Replace it if worn or deformed. The cassette separation roller and the
cassette feed roller are to be replaced together.
(6) Replace the cassette craw if deformed.
(7) Check the gears of the main unit and the feed unit, and replace any
damaged gears.
(8) Check the connection between the pick-up solenoid and J802 on paper
size detection board 2.
(9) Replace the pick-up solenoid if the resistance between J802-1 and
J802-2 is not approx. 110 ohm.
(10) Replace the paper size detection board 2.
(11) Replace the paper size detection board 1.
(12) Replace the ECNT board.