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Troubleshooting By Symptom - Canon iX7000 Series Service Manual

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2-3. Troubleshooting by Symptom

Faulty operation
Unsatisfactory print quality No printing, or no color
Symptom
The power does not turn on.
The power turns off
immediately after power-on.
A strange noise occurs.
Paper feed problems (multi-
feeding, skewed feeding, no
feeding).
ejected.
Faint printing, or white lines
on printouts.
Uneven printing.
Improper color hue.
Paper gets smeared.
The back side of paper gets
smeared.
18 / 53
Solution (Parts that are likely to be
faulty)
(1) Confirm connection of the power supply
unit:
- Harness and connector conditions
(2) Replace the following item(s):
- Logic board
- Power supply unit
- Panel cover unit
(1) Examine and remove any foreign material
or paper debris.
(2) Replace the following item(s):
- The part generating the strange noise
- Logic board
(1) Examine and remove any foreign material
or paper debris.
(2) Confirm cable connection.
(3) Replace the following item(s):
- ASF unit
- PE sensor board
- Pressure roller unit
- Platen unit
(1) Confirm the ink tank conditions:
- Confirmation of the air-through of an ink
tank
- Re-setting of an ink tank
(2) Remove foreign material from the purge
unit caps, if any.
(3) Perform cleaning or deep cleaning of the
print head.
(4) Perform print head alignment.
(5) Replace the following item(s):
*1
- Print head
, and ink tanks
- Logic board
- Purge unit
(1) Clean the inside of the printer.
(2) Perform bottom plate cleaning.
(3) Perform pick-up roller cleaning (Roller
Cleaning).
(1) Clean the inside of the printer.
(2) Perform bottom plate cleaning.
(3) Examine the platen ink absorber.
(4) Examine the paper eject roller.
(5) Replace the following item(s):
- The part in the paper path causing the

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