Hitachi RAS-35FH6 - Switching Failure and Low Speed Troubleshooting

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LD301 blinks 2 times.
Peak current-cut.
Is the intelligent power
module (IPM) normal?
Replace the intelligent power
module (the main P.W.B.).
LD301 blinks 1 time.
Reset stop.
However, the unit always resets and
stops just after power is supplied:
\this does not indicate a fault.
Is the reset circuit normal?
Normally, pin 7 of
CN18 is approx. 5V.
Replace the main P.W.B.
Make sure again that
connectors are connected
securely.
Perform final operation
check.
Yes
Yes
Yes
No
No
06K134_RAS_35YH6_061-082_E 10/25/06, 4:06 PM82