Epson WF-C5790 Service Manual page 108

EPSON WF-C5790/WF-C5790a/WF-C5710/ET-8700/WF-C5210/WF-C5290/WF-C5290a
Step
Check the status of the PF Encoder and FFC
Check the PF Encoder to make sure that it is not damaged, and there is no
4
disconnection or contact failure in the FFC.
Check the status of the PF Scale.
5
Is the PF Scale dirty or damaged?
Replace the Main Board Assy.
6
Does the error occur after replacing the Main Board Assy?
Troubleshooting
Check and measure
Troubleshooting procedure
Yes
Go to step 5
Go to step 6
Replace the Printer Mechanism.
Revision A
No
 Replace the PF Encoder Board if parts are
damaged.
 Properly connect the FFC.
 Replace the Printer Mechanism if the FFC is
damaged.
 Clean, if dirty.
 Replace the PF Scale, if damaged.
End
Confidential
108