[Dead] canon d780 messed up

[tomcatt]

i have got a d780 (similar to ir1370f) that the scan motor locks up . i have tried replacing the scan motor, home position board, ribbon cable from main board to scan unit. done almost everything but the main board. ready to tell customer to give up on it . any ideas out there??

[SCREWTAPE]

What scan motor are you talking about. Are you talking about the motor the drives CIS.

[tomcatt]

yes the motor that drives scan lamp assembly.

[SCREWTAPE]

Does it attempt to move at all.

Check the wiring between the IP PCB and the scanner motor. There is a harness that runs from the scanner motor to the IP PCB.
Check for damage.

This problem can be caused when the Reader Motor, M2, does not turn on. First try reseating the connector, J310, then check for voltage. Pins 1,2,3,&4 will all output 3.5v when the Reader Motor is activated. If the voltage is present, suspect bad wiring or motor, M2. If the voltages are not present, the IP PCB is likely causing the problem.

Check out the 2 attachments.

Is this the cable that you replaced?

[blazebusiness]

i have got a d780 (similar to ir1370f) that the scan motor locks up . i have tried replacing the scan motor, home position board, ribbon cable from main board to scan unit. done almost everything but the main board. ready to tell customer to give up on it . any ideas out there??

Sounds like you've invested a lot of time and effort on an old machine that origionally retailed years ago for only $599. I would advise the customer that maybe it would be a better investment of their $$$$ to buy a new machine rather than spend $$$$ on servicing this one.