Printer Does Not Feed Paper Correctly; Control Panel Operation Is Abnormal - Epson Stylus Color 640 Service Manual

EPSON Stylus Color 440/640/740

3.2.4 Printer does not feed paper correctly.

START
Is
paper set
in the ASF
NO
correctly?
Set the paper correctly
Do
NO
the PF roller
and platen
rotate?
YES
Remove any obstruction
in the paper path if
there is any.
Clean the roller of
paper path.
Is the
problem
solved? NO
YES
END
Flowchart 4
Chapter 3 Troubleshooting
Is the
PF motor
running?
NO
YES
Check the PF motor.
If there is no problem,
replace the main board.
Refer to Section 3.4
"Repair of the printer
mechanism".
END

3.2.5 Control panel operation is abnormal.

START
Is the
control panel
connected
correctly?
YES
Replace the control
panel.
Is the
problem
solved?
YES
END
Flow Chart 5
Revision A
NO
Connect the
control panel
correctly.
Is the
problem
solved?
YES
NO
NO
Replace the
main board.
END
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