LG OLED48C1PUB Service Manual page 67

Standard Repair Process Detail Technical Manual
symptom
Content
SET Model
OLED48C1
OLED55C1
OLED65C1
OLED77C1
Power Check Sequence
1. AC input Check : 100~240Vac
2. PWR-ON Check : P201
- SET On : above 3V
- SET St-by : 0V
3. 12V Level Check : P201
- SET On : 12V
- SET St-by : 7.8V (swing between 7V to 10V)
4. DRV_ON Check : P201
- SET On : above 2.5V
- SET St-by : 0V
5. T-CON 22V Check : P251
- SET On : above 22V
- SET St-by : 0V
6. T-CON 12V Check : P252
- SET On : above 12V
- SET St-by : 0V
All condition meets, Power Board OK.
Error
B. Power error _No power
Check power input voltage and ST-BY 7.8V
Power P/N, Name
EAY65768824, LGP48CX-20OP
EAY65689424, LGP55CX-20OP
EAY65689423, LGP65CX-20OP
EAY65689422, LGP77CX-20OP
Established
date
Revised
date
Power Board Voltage / Current
A9
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A9