Canon iP4680 Simplified Service Manual page 7

Cycles of
blinking of
Error
Alarm and
Power LEDs
15 times USB Host VBUS
overcurrent
16 times Pump roller
sensor error
17 times Paper eject
encoder error
19 times Ink tank position
sensor error
20 times Other errors
21 times Drive switch
error
23 times Valve cam
sensor error
Note: Before replacement of the logic board ass'y, check the ink absorber counter value (by service
test print or EEPROM information print). If the counter value is 7% or more, also replace the ink
absorber kit when replacing the logic board ass'y. If the counter value is less than 7%, register
the current ink absorber counter value to the replaced new logic board instead.
Error
Conditions
code
[9000] The USB Host VBUS is
overloaded.
[5C20] The pump roller position
cannot be detected.
[6010] Paper eject encoder error
[6502] None of the ink tank
position is detected.
[6500] An unidentified error
occurred.
[C000] Drive was not switched
properly.
[6C10] The valve cam sensor was
faulty at power-on or when
purging was attempted.
(7/21)
Solution
(Check points and replacement items)
1) Part replacement:
- Logic board
1) Cable connection
2) Part replacement:
- Purge drive system unit
1) Smearing or scratches on the LF / EJ
slit film;
clean the LF / EJ slit film.
2) Foreign material or paper debris in the
paper path;
remove foreign material.
3) Cable connection
4) Part replacement:
- LF / EJ slit film
- LF / EJ timing sensor unit
- Platen unit
- Logic board
- Paper feed motor
1) Ink tank position;
confirm the ink tank position.
2) Re-set or replacement of ink tanks
3) Cable connection
4) Part replacement:
- Spur unit
- Logic board
1) Part replacement:
- Logic board
1) Foreign material or paper debris in the
drive switch area;
remove foreign material.
2) Part replacement:
- Purge drive system unit
- ASF unit
1) Foreign material or paper debris
around the purge drive system unit;
remove foreign material.
2) Cable connection
3) Part replacement:
- Purge drive system unit
- Logic board