The carriage does not operate
normally.
Carriage motor does not
operate at all or it occurs a
abnormal noise.
IC2 is dead.
Check the waveform at 27,
16 pin of IC11.
Replace IC2.
IC11 is defective.
Check the waveform at 6-9 pin
of IC11.
Replace IC11.
Printing is abnormal. Nothing prints.
Trapezoidal waveform does
not output.
Check the trapezoidal waveform at 3-pin of Q2 or Q3 on B101
MAIN board.
Replace IC14, Q2, or Q3.
IC2 is dead.
Check the clock signal of
trapezoidal from IC2. (at
174 pin of IC2)
Replace IC2.
Table 3-13. Troubleshooting the MAIN Board (continued) (TBD)
Symptoms Condition Cause Check Point Solution
Title: maic14in.eps
Creator: Micrografx Graphics Engine
CreationDate: Fri Nov 01 12:01:06 1996
Title: ma14out.eps
Creator: Micrografx Graphics Engine
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