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22LG3DDH (CHASSIS:LA96E) - LG TV Service Manual (repair manual). Page 34

Read LG 22LG3DDH (CHASSIS:LA96E) Service Manual online

9. Digital TV Audio
Check Tuner 5V Power
TU1001 4Pin
→
NO
Check IC1002
Check IC1003
↓ OK
Check IF_P/N Signal
→
NO
Bad Tuner. Replace Tuner.
→
NO
Bad Tuner. Replace
Tuner.
↓ OK
Check Check Demodulator Input
Clock(X1005)
→
NO
Replace X1005
↓ OK
Check IC1004(LGDT) Output
- AR1070, AR1071
→
NO
Replace IC1004
↓ OK
Check Output Signal
P1400 1,2,3,4 PIN
→
NO
Replace NTP(Audio AMP)
IC600
↓ OK
Check Connector & P600
→
NO
Replace connector
if found to be damaged.
↓ OK
Check speaker resistance
and connector damage.
→
NO
Replace speaker.
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