Canon PIXMA MP810, Руководство по обслуживанию, Страница: 14 / 20

- Replace a faulty part, if any.
Nothing is displayed on the LCD. - Confirm the connection between the operation panel, the LCD unit, and
the logic board.
- Replace the
- operation panel unit, or
- logic board.
A portion of the LCD is not displayed.
The display flickers. - Perform the button and LCD test in the service mode, and confirm that the
LCD is displayed without any segments missing or flickering.
- Confirm the connection between the operation panel, the scanning unit,
and the logic board.
- Replace the
- operation panel unit, or
- logic board.
Paper feed problems (multi-feeding, skewed
feeding, no feeding). - Examine the inside to confirm that no parts are damaged, and the rollers
are clean.
- Remove foreign material.
- Adjust the paper guide properly.
- Set the paper properly.
- Confirm the following:
- selected paper source
- attachment of the rear cover
- connection of each harness and the logic board
- Replace the
- sheet feeder unit,
- cassette unit, or
- logic board.
Carriage movement problems (contact to other
parts, strange noise). - Confirm that the carriage timing slit strip film is free from damage or
grease.
- Clean the carriage timing slit strip film (with ethanol and lint-free paper).
- Remove foreign material.
- Replace the
- carriage timing slit strip film, or
- carriage unit.
Faulty scanning (no scanning, strange noise). - Confirm the connection between the scanning unit and the logic board.
- Replace the
- scanning unit, or
- logic board.
The FAU lamp does not turn on. - Confirm the connection between the scanning unit, the FAU, and the logic
board.
- Replace the
- scanning unit, or
- logic board.
Unsatisfactory print quality No printing, or no color ejected. - Confirm that the ink tanks are installed properly.
- Perform print head maintenance.
- Replace the
- ink tank,
- print head
*1
.
- Remove foreign material from the purge unit caps, if any.
- Replace the
- purge unit, or
- logic board.
Printing is faint, or white lines appear on printouts
even after print head cleaning.
Line(s) not included in the print data appears on
printouts. - Remove and re-install the print head.
- Confirm that the ink tanks are installed properly.
- Perform print head maintenance.
- Replace the
- ink tank,
- print head
*1
,
- purge unit, or
- logic board.
Paper gets smeared. - Feed several sheets of paper.
- Perform bottom plate cleaning.
- Clean the paper path with cotton swab or cloth.
- Clean the ASF paper feed rollers.
- Clean the cassette paper feed rollers.
A part of a line is missing on printouts. - Replace the
- ink tank, or
- print head
*1
.
Color hue is incorrect. - Confirm that the ink tanks are installed properly.
- Perform print head maintenance.
- Replace the
- ink tank, or
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