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1. Power-Up Boot Fail Trouble Shooting guide
Check P2301 All
Voltage Level (3.5V, 12V, 24V)
Y
Check Q2302 output Voltage(12V)
Y
Check LVDS Cable
Y
Check LCD Module
Control board
2. No OSD Trouble Shooting guide
Check P2301 All
Voltage Level (3.5V, 12V, 24V)
Y
Check IC8700 RESET pin
Y
Check X8701 Clock
10MHz
Y
Check IC8700 IIC
Communication status
Y
Check IR input state of IC8700
13pin
Y
Re-download NEC Micom
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Only for training and service purposes
TROUBLE SHOOTING GUIDE
N
Check power connector and
RL_ON signal OK ?
N
Check Q2302 application circuit
Or replace Q2302
N
Replace Cable
N
Check power connector and
RL_ON signal OK ?
N
Check switch SW8700,
N
Check X8701 application circuit
or Replace X8701
N
Check IIC line or replace IC8700
N
Check IR board
- 20 -
N
Y
N
Replace Power Board
Replace Power Board
LGE Internal Use Only
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