LG 55SM8600PUA Service Manual page 69

Standard Repair Process Detail Technical Manual
symptom
Content
SET Model
SM86 EAY65169921, LGP65-19UL6
Power Check Sequence
1. AC input Check : SK100 (100~240Vac)
2. PWR-ON Check : J43
- SET On : above 3V
- SET St-by : 0V
3. 13.2V Level Check : J2
- SET On : 13.2V
- SET St-by : 8.4V (swing between 7V to 10V)
4. DRV_ON Check : J35
- SET On : above 3V
- SET St-by : 0V
5. LED voltage Check : P202 to P203
Picture Condition : VIVID (Backlight 100)
Voltage
Variable range [V]
176.7V (159.0~194.4V)
6. LED Indicator Check
- Normal condition : Not blank
- Abnormal condition : Blank 1~9 times
All condition meets, Power Board OK.
Error
B. Power error _No power
Check power input voltage and ST-BY 8.4V
Power P/N, Name
Rated Current [Amean]
0.63A (105mA 6string)
Established
date
Revised
date
P202,P203
SK100 (AC input)
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A9
Power Board Voltage / Current
DRV_ON (J35)
LED Indicator
13.2V (J2)
PWR_ON
(J43)