LG 22LU7000 - Page 26

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Only for training and service purposes
(3) In case of no sound to Headphone
All input mode
is no sound ?
No
Same as Block B
Yes
Is VCC 3V3 normal?
No
Replace U45(LD1117)
Yes
U112 operate
normal?
Replace U112(FLI10610H)
U764 operate
normal?
Replace U764(TPA6110)
Yes
No
No
Is sound output of the
JP762 normal?
Yes
Replace JP762
Replace MainBoard