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LGE Internal Use Only
Copyright ©
LG Electronics. Inc. All rights reserved.
Only for training and service purposes
TROUBLE SHOOTING GUIDE
1. Power-Up Boot Fail Trouble Shooting guide
2. No OSD Trouble Shooting guide
Check P2300/1 Voltage Level
(13.2V, L2303)
Check power connector and RL_ON
signal OK ?
(L2030, Pin 1)
Replace Power board
Y
N
Y
Check IC8701
RESET and UPDATE pin
Check switch SW8700, SW8701
Y
N
Check X8700 Clock
32.768KHz
Check X8700 application circuit or
Replace X8700
Y
N
Check IC8701 IIC
communication state
Check IIC line or replace IC8701
N
Check IR input state of IC8701
57pin
Check IR board
N
Y
Re-download PTC Micom
Y
Check LVDS Cable
Check LCD Module
Control board
Y
Replace Cable
N
Check P2300/1 Voltage Level
(13.2V, L2303)
Check power connector and
RL_ON(pin1) signal OK ?
Replace Power board
N
Y
Check Q2302 output Voltage(13.2V)
Y
Check Q2302 application circuit or
replace Q2302
N
Summary of Contents for 32LX770M
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