Epson WF-C5790 Service Manual page 112

EPSON WF-C5790/WF-C5790a/WF-C5710/ET-8700/WF-C5210/WF-C5290/WF-C5290a
Step
Visually check the ASF gear train parts.
5
Check the ASF gear train parts to make sure that there is no foreign object on
or damage to them.
Check the status of the ASF Encoder and FFC.
Make sure there is no damage in the ASF Encoder, and no contact point
6
damage, disconnection, or half insertion, etc. in the FFC.
Check the status of the ASF Scale.
7
Is the ASF Scale dirty or damaged?
Replace the Main Board Assy.
8
Does the error occur after replacing the Main Board Assy?
Troubleshooting
Check and measure
Troubleshooting procedure
Yes
Go to step 6
Go to step 7
Go to step 8
Replace the Printer Mechanism.
Revision A
No
 Remove any foreign objects, if present.
 Replace the Printer Mechanism if the ASF-
related gear is damaged.
 Properly connect the ASF Encoder FFC.
 Replace the Printer Mechanism if the contact
point is damaged or the ASF Encoder FFC is
disconnected.
Replace the Printer Mechanism.
End
Confidential
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