2-5. Troubleshooting by Symptom
Symptom
Solution
Faulty operation
The power does not turn on.
The power turns off immediately after
power-on.
(1) Confirm connection of the power supply unit:
- Harness and connector conditions
(2) Replace the following item(s):
- Logic board
- Power supply unit
- Panel board
A strange noise occurs.
(1) Examine and remove any foreign material or paper debris.
(2) Replace the following item(s):
- The part generating the strange noise
- Logic board
The LCD does not display properly.
A portion of the LCD is not displayed.
The display flickers.
(1) Confirm cable connection (LCD FCC and panel harness):
- Harness and connector conditions
- No cable breakage, etc.
(2) Replace the following item(s):
- LCD FFC
- LCD viewer unit
- Panel board
- Logic board
Paper feed problems (multi-feeding,
skewed feeding, no feeding).
(1) Examine and remove any foreign material or paper debris.
(2) Confirm the PF rear cover and the cassette conditions.
(3) Confirm cable connection.
(4) Replace the following item(s):
- ASF unit (for paper feeding error from the rear tray)
- PF pick-up unit (for paper feeding error from the cassette)
- PE sensor board
- Pressure roller unit
- Cassette unit
Faulty scanning (no scanning, strange
noise).
(1) Confirm cable connection (scanner motor cable and CIS
FFC).:
- Harness and connector conditions
- No cable breakage, etc.
(2) Replace the following item(s):
- Scanner unit
- Logic board
The CD / DVD tray is not pulled in the
feeder.
(1) Confirm the reflector of the back of the CD / DVD tray:
- Cleaning of the reflector.
(2) Replace the following item(s):
- Logic board
- CD / DVD tray
Unsatisfactory print quality No printing, or no color ejected.
Faint printing, or white lines on printouts.
Uneven printing.
Improper color hue.
(1) Confirm the ink tank conditions:
- Confirmation of the air-through of an ink tank (proper
removal of the orange tape)
- 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):
- Print head
*1
, and ink tanks
- Logic board
- Purge drive system unit
Paper gets smeared.
(1) Clean the inside of the machine.
(2) Perform bottom plate cleaning.
(3) Perform paper feed roller cleaning.
The back side of paper gets smeared.
(1) Clean the inside of the machine.
(2) Perform cleaning or deep cleaning of the print head.
(3) Examine the platen ink absorber.
(4) Examine the paper eject roller.
(5) Replace the following item(s):
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