Sharp LC-32WD1E/S/RU Service Manual page 69

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