Thanks for the quick reply.
This all started when I got the message to replace the left print head. I replaced it per canon and upgraded the firware. Then I took the error. Canon told me that due to the age it was wise to replace the Right print head. I did and it take the same error. So it looks like I need the rest of the parts below. By any chance do you have a source for the parts? Im searching on line and all I can find is the Carriage Relay PCB board.
QM3-3121-010, QM3-3121-000- Canon IPF8300 Carriage Relay PCB Item Inc.
PF8300 series ①Replace the
printhead. - Done
②Replace the CR
relay board.
③Check/ replace
the long flexible
cable.
④Replace the main PCB
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