No Osd Trouble Shooting - LG M2762DP-EML Service Manual

Check P700(#9) INV_ON
High(3.3V)?
Y
1. Check Po wer Board , 15V
2. Check IC707 Output Voltage(5V)
3. Check P300(#1,2 ,3) 5V
Y
Check P30 0
#8(TXEC+) , #9(TXEC-) ,
#20(TXOC+) , #21(TXOC-)
Y
Check L VDS Cable for damage or ope n
con ductors .
N
Check L CD Module
Control board
(Refer to Module CAS)
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Only for training and service purposes

2. No OSD Trouble Shooting

N
Check GPIO Path
(Refer to Appe ndix 1 .)
1. Replace Pow er Board
N
2. Replace IC707
3. Replace Q300
N
IC101 has problem
Y
Replace Ca ble
- 17 - LGE Internal Use Only