Epson 440 Service Manual page 122

Stylus Color 600 Service Manual
Symptom
Printing is Printing is not
abnormal. execute.
Paper feed Paper feed
operation is motor does not
abnormal. work.
5-12
Table 5-7. Repair of the C200 Main Board
Table 5-8. Repair of the C200 Main Board(Con.)
Condition Cause
IC7 is dead.
IC2 is dead.
IC2 is dead.
IC15 is dead.
Checkpoint
Check the trapezoidal
waveform at 3-pin of Q7
on C200main board.
Check the control signal
of trapezoidal from IC2.
(at 80 pin of IC2)
Check the output
waveform of at 55, 56,
57, 58 pin of IC2.
Check the output
waveform of at 6, 7, 8, 9
pin of IC15.
Solution
Replace IC6,
Q7, or Q9.
Replace IC2.
Replace IC2
Replace IC15
Rev. A