Does the PSU_STBY voltage (control signal) from the Pin2 of CX400
Yes
Is a voltage of approx. 13~15V
Applied to Pin 6 of IC3, Pin14 of IC1
and Pin 12 of IC2?
No
Check CX400 wireharness between PSU to Main
board is connected?
Yes
The PSU shall be working normal
No
Replace PSU.
No
No bias was caused by protection loop be tripped.
Turn on PSU again
after rechecking
each connector
was in position.
The output was short-circuited.
Check the resistance between
positive and negative from each
output.
Turn on the PSU again after
remove fault situation.
Replace PSU.
LC-32WD1E/S/RU, LC-37WD1E/S/RU, LC-42WD1E/S/RU, and LC-32/37/42WT1E
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