Trouble Shooting Guide - LG 65UX970H Service Manual

1. Power-Up Boot Fail Trouble Shooting guide
Check P2300/1 Voltage Level
(3.5V, L2301)
(12V, L2302)
(24V, L2307/8)
Y
Check IC3001
RESET and UPDATE pin
Y
Check X3000 Clock
32.768KHz
Y
Check IC3001 IIC
communication state
Y
Check IR input state of IC3001
57pin
Y
Re-download PTC Micom
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Only for training and service purposes

TROUBLE SHOOTING GUIDE

Check power connector and
N
RL_ON signal OK ?
(P2300/1, Pin 1)
N
Check switch SW3000, SW3001
Check X3000 application circuit
N
or Replace X3000
Check IIC line or replace
N
IC3001
N
Check IR board
- 27 -
Y
Replace Power board
LGE Internal Use Only