Canon MX882 Service Manual page 8

Graphic or text is enlarged on
printouts in the carriage
movement direction.
Graphic or text is enlarged on
printouts in the paper feed
direction.
Faulty No scanning.
scanning
Streaks or smears on the
scanned image.
Network No printing.
connection
problem
FAX problem No FAX sending or
reception.
*1: Replace the print head only after the print head deep cleaning is performed 2 times, and when the
problem persists.
- The part in the paper path causing the smearing
(1) Confirm that the carriage slit film is free from smearing or
scratches:
- Cleaning of the timing slit strip film.
(2) Replace the following item(s):
- Timing slit strip film
- Carriage unit
- Logic board ass'y
- Scanner unit (for copying)
(1) Confirm that the LF / EJ slit film is free from smearing or
scratches:
- Cleaning of the LF / EJ slit film.
(2) Replace the following item(s):
- Timing slit disk feed film
- Timing slit disk eject film
- Timing sensor unit
- Platen unit
- Logic board ass'y
- Scanner unit (for copying)
(1) Confirm cable connection.
(2) Replace the following item(s):
- Scanner unit
- Logic board ass'y
(1) Clean the platen glass and the document pressure sheet.
(2) Confirm the position of the document pressure sheet.
(3) Replace the following item(s):
- Scanner unit
- Document pressure sheet
- Logic board ass'y
(1) Examine if printing is performed properly via USB
connection.
(2) Confirm the network connection.
(3) Replace the following item(s):
- Logic board ass'y
- Wireless LAN board ass'y
(1) Confirm the FAX settings.
(2) Replace the following item(s):
- NCU board ass'y
- Logic board ass'y
3 / 76