Canon PIXMA MX340 Simplified Service Manual page 7

Cycles of
blinking of
Error
Alarm and
Power LEDs
10 times VH monitor error [B200] The print head voltage is
15 times USB VBUS
overcurrent
20 times Other errors
22 times Scanner error
Power LED ROM / RAM
turned off, error
and Alarm
LED lit
Error
Conditions
code
not normal.
[9000] The USB VBUS is
overloaded.
[6500]
[5011] An error occurred in the
scanner.
--- The check sum value is
incorrect in the ROM check
or RAM check at
hard-power-on.
(6/37)
Solution
(Check points and replacement items)
1) Part replacement:
- Ink cartridge and logic board
- Power supply unit
1) Part replacement:
- Logic board
1) Part replacement:
- Logic board
1) Document pressure sheet condition
2) Cable connection
3) Part replacement:
- Document pressure sheet
- Scanner unit
- Logic board
1) Part replacement:
- Logic board