Troubleshooting By Symptom - Canon i470D Service Manual

2.4 Troubleshooting by Symptom

The power does not turn on.
The power turns off
immediately after power-on.
The print head is not
recognized.
The print head does not move to
Faulty
the home position.
operation
A strange noise occurs.
Paper does not feed.
Paper feed
problems
Paper feeds at an angle.
No printing, or no color ejected.
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.
Paper gets smeared.
Unsatisfactory
A part of a line is missing on
print quality
printouts.
Color hue is incorrect.
No ejection of black ink.
Graphic or text is extended on
printouts.
Card is not recognized.
Image data is not recognized.
Direct
Printing-related
problems
Digital Camera Direct Printing
cannot be performed.
1
* : If image data is in the card, move the data to the host computer before formatting.
Symptom
1. Replace the AC adapter.
2. Replace the logic board ass'y.
3. Replace the operation panel unit.
1. Remove and re -install the print head.
2. Replace the print head.
3. Replace the logic board ass'y.
1. Check that no foreign material is inside
the printer.
2. Attach a removed part if any.
3. Apply oil to the grounding spring.
1. Remove foreign material if any.
2. Replace the sheet feeder unit.
1. Remove foreign material if any.
2. Adjust the paper guide position.
1. Check whether ink remains or not.
2. Perform print head deep cleaning.
3. Replace the print head.
4. Replace the logic board ass'y.
1. Remove and re -install the print head.
2. Check whether ink remains or not.
3. Perform print head deep cleaning.
4. Replace the print head.
5. Replace the logic board ass'y.
1. Feed several sheets of paper.
2. Clean the paper path with cotton swab or
cloth,
3. Replace the platen unit.
1. Replace the ink tank.
2. Replace the print head.
1. Check whether ink remains or not.
2. Perform print head deep cleaning.
3. Replace the print head.
4. Replace the logic board ass'y.
1. Check whether ink remains or not.
2. Perform Refreshing.
3. Replace the print head.
1. Clean the timing slit strip film with
alcohol.
2. Replace the timing slit strip film.
3. Replace the logic board ass'y.
4. Replace the carriage unit.
1. Confirm the card installation status.
2. Release the maintenance mode.
3. Format the card on the digital camera.*
4. Replace the logic board ass'y.
1. Check that images exist in the card.
2. Check the data volume in the card, and
format type.
3. Replace the logic board ass'y.
4. Replace the operation panel.
1. Check that the printer supports Digital
Camera Direct Printing.
2. Check that no errors occur in the printer.
3. Replace the logic board ass'y.
1 - 5
Solution
1
Part No.
QH3-3615
QM2-0483
QH8-1267
QY6-0047
QM2-0483
QA4-1372
QG4-0374
QY6-0047
QM2-0483
QY6-0047
QM2-0483
QG4-0380
QY6-0047
QY6-0047
QM2-0483
QY6-0047
QA4-0918
QM2-0483
QG4-0348
QM2-0483
QM2-0483
QH8-1267
QM2-0483