Power Pcb Trouble Diagnosis - Daewoo DP-42GM Service Manual

9-6. POWER PCB Trouble Diagnosis

Although X-SUS / Y-SUS / SCAN / DATA COF are checked, but still the set does not operate, and
then check if the following Power PCB s Trouble Symptoms appear.
After unplugging X-SUS / Y-SUS PCB s Power Connectors(P101A, P201A) and checking
remaining voltage, there still exist several tens of remaining voltage.
When output condition of Power Module is set to LOW-Voltage, output voltage table lists 4~10
are NOT normal. Or when set to HIGH-Voltage, output voltage table list 1~3 are NOT normal. (
Refer to 4-3-2 )
When output condition of Power Module is set to LOW-Voltage, output voltage table lists 4~10
are normal. But when set to HIGH-Voltage, output voltage table list 1~3 are NOT normal. (
Refer to 4-3-2 )
After turn SET on with Remote Controller when output condition of Power Module is set to
HIGH-Voltage, the LED turn Green but the Power Shut Down happens after 2~3 seconds.
If high voltage(Vsus, Vyer, Vadd) measured from Power PCB is different from that of Optimum
adjusting Voltage LABEL, readjust the voltages referring to 6-2-1. Adjusting Power PCB
-72-