Epson LQ-670 - Page 103

LQ-670 Service Manual
Rev. A
5-
8
[Abnormal operation at power on]
NO
END
YES
NO
YES
YES
NO
YES
NO
Perform the self-test.
Is the
self-test
normal?
Go to other trouble-
shooting
Exchange the interface
cable.
Normal?
Replace the Main Board
Normal?
Replace the power-
supply board.
Set I/Fmode "Auto" by the
control panel operation.
(Default setting)
Is the I/F mode
set "Auto"?
Figure 5-7. Flowchart 6