Printer does not operate at power on
START
Is the AC
input voltage
correct ?
Has fuse
F1 on the C172
PSB/PSE
blown ?
Check the output
voltage of the C172
PSB/PSE at CN2.
Is the output
voltage correct ?
Replace the main board.
Is the problem
corrected ?
END
Use the correct
input voltage.
Replace the fuse
and disconnect
CN2 on the C172
PSB/PSE board.
Replace the
C172 PSB/PSE
board.
Does the
fuse blow again
at power on ?
Check motors and drivers.
Refer to the section describing
repair of the printer mechanism.
Replace any bad parts. (If a
motor and driver are bad, replace
both at the same time.)
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
Figure 5-1. Flowchart — 1
Troubleshooting
5-6 EPSON Stylus 1500 Service Manual