Canon PIXMA MP800 Service Manual - Page 15

Troubleshooting by Symptom, Check the operation of the moving parts such as purge - scanner

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Yes No Cancellation of image select information Reset the selected photo information? Yes No - Select Yes, and press the OK button. => The trimming is cancelled, and printing on a DVD or CD can be done. - Select No, and press the OK button. => The LCD returns to the display immediately before the message was displayed. When one or more images are selected in Multiphoto print or Layout print, and if a user tries to display the menu or sub-menu, the message is displayed. - Select Yes, and press the OK button. => The image selection is cancelled, and the menu or sub-menu is displayed. - Select No, and press the OK button. => The LCD returns to the display immediately before the message was displayed. 2-5. Troubleshooting by Symptom Faulty operation Symptom The power does not turn on. The power turns off immediately after power-on. A strange noise occurs. Nothing is displayed on the LCD. A portion of the LCD is not displayed. Solution - Confirm the connection of - the power cord, and - between the logic board and the power supply unit. - Replace the - AC adapter, or - logic board ass'y. - Remove foreign material. - Attach a removed part if any. - Check the operation of the moving parts (such as purge unit, carriage unit, and paper feeding mechanism) - Replace a faulty part, if any. - Confirm the connection between the operation panel, the scanner unit, and the logic board. - Replace the - LCD, or - logic board ass'y. - Perform the button and LCD test in the service mode, and confirm that the LCD is displayed without any segments missing. - Confirm the connection between the operation panel, the scanner unit, and the logic board. - Replace the - LCD, or - logic board ass'y. 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. - Confirm the connection of each harness and the logic board. - Replace the - sheet feeder unit, - cassette, or - logic board ass'y. 1-10

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2-5.
Troubleshooting by Symptom
Yes
No
- Select
Yes
, and press the OK button.
=> The trimming is cancelled, and printing on a
DVD or CD can be done.
- Select
No
, and press the OK button.
=> The LCD returns to the display immediately
before the message was displayed.
Cancellation of image
select information
Reset the selected photo information?
Yes
No
When one or more images are selected in Multi-
photo print or Layout print, and if a user tries to
display the menu or sub-menu, the message is
displayed.
- Select
Yes
, and press the OK button.
=> The image selection is cancelled, and the
menu or sub-menu is displayed.
- Select
No
, and press the OK button.
=> The LCD returns to the display immediately
before the message was displayed.
Symptom
Solution
Faulty operation
The power does not turn on.
The power turns off immediately after
power-on.
- Confirm the connection of
- the power cord, and
- between the logic board and the power supply unit.
- Replace the
- AC adapter, or
- logic board ass'y.
A strange noise occurs.
- Remove foreign material.
- Attach a removed part if any.
- Check the operation of the moving parts (such as purge
unit, carriage unit, and paper feeding mechanism)
- Replace a faulty part, if any.
Nothing is displayed on the LCD.
- Confirm the connection between the operation panel, the
scanner unit, and the logic board.
- Replace the
- LCD, or
- logic board ass'y.
A portion of the LCD is not displayed.
- Perform the button and LCD test in the service mode, and
confirm that the LCD is displayed without any segments
missing.
- Confirm the connection between the operation panel, the
scanner unit, and the logic board.
- Replace the
- LCD, or
- logic board ass'y.
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.
- Confirm the connection of each harness and the logic
board.
- Replace the
- sheet feeder unit,
- cassette, or
- logic board ass'y.
1-10