Troubleshooting
Rev. A
5-13
5.5 Repair of the C202 MAIN Board Component
This section consists of the procedures for replacing and repairing the C202 MAIN board at the
component level. Refer to Table 5-7 which shows symptoms, descriptions causes, check points, and
solutions.
Symptom
Description
Cause
Check points
Solution
The printer does
not operate at all.
CPU is not
functioning. (The
driver mechanism
is not functioning
correctly when the
printer is turned
on and off.)
Reset IC for
the IC9 logic
is defective.
•
Check that 5V is output from the
pin 1 and 3 for the IC9 at a
normal state.
Replace the
reset IC for the
IC9.
Reset IC for
the IC8 42V
line or IC19
is defective.
•
Check that +5V is output from
the pin 6 for the IC8 and is input
to the pin1 for the IC19, and 0V
is input to the pin 2 for the IC19
and +5V is output from the pin 4
for the IC19 at a normal state.
Replace the IC8
or IC19.
CRU1 or
CRU2 is
defective.
•
Check that the waveform shown
below is output from the both
leads of the CRU.
Replace the
defective CRU.
Table 5-7. Repair of the C202 MAIN Board Component (1)
Содержание Stylus Color 800
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Страница 185: ...EPSON Stylus 2 25 800 Rev A A 10 A 3 2 C202 PSB Board Assembly Layout A 3 3 C202 PSE Board Assembly Layout ...
Страница 187: ...EPSON SEIKO EPSON CORPORATION ...