LG 65UM7600PTA - Page 71

Established
date
Standard Repair Process Detail Technical Manual
Revised
date
A18
Error
symptom
Content
Check power input voltage and ST-BY 7.8V
B. Power error _No power
SET Model
Power P/N, Name
65UM73/74/75/76
EAY65228701, LGP65T-19U1
MS Level Range [V] LED On/Off
MS (0V) 0 ~ 0.25 Off
MS (2V) 1.75 ~ 2.25 On (Home mode)
MS (3V) 2.75 ~ 3.25 On (Store Mode)
Power Check Sequence
1. AC input Check : SK100 (100~240Vac)
2. PWR-ON Check : Check Hole
- SET On : above 3V
- SET St-by : 0V
3. 13.2V DC Check : D201 center Pin
- SET On : 13.2V
- SET St-by : 7.8V
4. MS Level Check : MS
5. LED voltage Check : P801, Pin 1-7
※ Home mode : General Customer
Store mode : use Store
Picture Condition : VIVID (Back light 100)
Min Typ. Max
244 V 272 V 299 V
SK100 (AC input)
Power Board Voltage / Current
P801
PWR-ON
MS
D201 (13.2V)
all condition meets, Power Board OK.
P201
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes