Hitachi RAS-E08H2A Service Manual page 84

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