Epson FX-870/1170 User Manual
Page 147
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Principles of Operation
Table 6-7. Repairing the C076 PSB Board Assembly (Continued)
Problem
Checkpoint
The voltage of the
Check the voltage waveforms at Q3.
Replace
t35 V line is below PC2 or
is
the specified value. bad.
PC2 or
is bad.
Check the voltage waveforms at Q2.
Replace
6-32
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