LG M237WD - Page 16

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Only for training and service purposes
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C
2009
- 16 -
2. No OSD Trouble Shooting
Check P30 2
#8(TXEC+) , #9(TXEC-) ,
#20(TXOC+) , #21(TXOC-)
IC101 has problem
Check L VDS Cable for damage or open
conductors .
Check L CD Module
Control board
(Refer to Module CAS)
Y
N
Y
Replace Ca ble
N
Y
1. Check Po wer Board , 15V
2. Check Q702 Output voltage(5V)
3. Check P302(#1, 2, 3) 5V
1. Replace Power Board
2. Replace Q702
N
Check P70 0(#9)
INV_ON high
Check GPIO Path
(Refer to Appendix 1 .)
N
Y