Canon BJC-8500 Service Manual page 171

Part 5: Maintenance
2. Defective
Printing <1>
Printing is not
Executed
<Measure>
Remove & install
the BJ cartridge.
Execute head cleaning
and head refreshing,
once each.*
Execute nozzle
check print.
OK?
Yes
END
<Example>
<Suspected parts>
No
1. Replace ink tank.
2. Replace BJ cartridge.
OK?
Yes
END
* Refer to Part 3: 3.3.1 Maintenance settable items (page 3-19) or
Part 3: 3.4.1 Cleaning the BJ cartridge (page 3-23) .
• All colors are not printed.
• Only specific colors are not printed.
BJ cartridge, ink tank, purge unit,
carriage ribbon cable, carriage board,
logic board
No
1. Replace logic board.
2. Replace carriage board.
3. Replace carriage
ribbon cable.
4. Replace purge unit.
5-30
BJC-8500