Filter
Top Products
DFX-8500
Rev. B
5-2
2
Table 5-6. C204 MAIN/DRV/DRV-B boards Component Repair 7/7
Symptom Cause Checkpoint Solution
The self-test is
printed incorrectly
IC1 on the C204
MAIN board is
defective.
Observe the output signal at pins 136-
181 of IC1.
Replace IC1.
The head driver FETs
on the C204 MAIN
and/or C204 DRV-B
boards are defective.
Observe the voltage waveform at the
each FET drain side.
Replace the
abnormal FET.
The CPU (IC2) on the
C204 MAIN board is
defective.
Observe the signals at pins 38 (PTS1)
and 42 (PTS2) of the IC2
Replace the IC2.