Hitachi RAS-50WX8 Service Manual page 157

LD301 blinks 2 times.
Peak current-cut.
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 power module normal?
Yes
No
Is the drive circuit normal?
Yes
Are R503 and peripheral
No
circuits normal?
Is the microcomputer IP
input signal normal?
(Normally, pin is approx.
5V)
No
Is the reset circuit normal?
(Normally, microcomputer pin
is approx. 5V)
Operate the unit again.
Is it normal?
Perform final operation check.
Replace the power module.
Replace any defective parts.
Replace any defective parts.
Replace any defective parts.
Make sure again that
connectors are connected
securely.