LCD TV SERVICE MANUAL
LCD TV SERVICE MANUAL
LCD TV SERVICE MANUAL
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9. Digital <strong>TV</strong> Audio<br />
Check RF Cable & Signal<br />
ok<br />
Check Tuner 5V Power<br />
L5004<br />
ok<br />
Check Tuner 3.3V Power<br />
L5003<br />
ok<br />
Check Tuner 1.2V Power<br />
IC5001 2 pin :1.2V<br />
ok<br />
Check IF_P/N Signal<br />
TU5001 17/18 Pin<br />
ok<br />
Check IC1004(LGDT) VCC<br />
ok<br />
Check Demodulator Input<br />
Clock(X1005-25Mhz)<br />
ok<br />
Check IC1004(LGDT) Output<br />
- AR1070, AR1071<br />
ok<br />
Follow procedure<br />
‘8. All source audio’<br />
trouble shooting guide.<br />
No<br />
No<br />
No<br />
No<br />
No<br />
No<br />
No<br />
Check IC401<br />
Replace L5003<br />
Replace IC5001.<br />
Bad Tuner. Replace Tuner.<br />
Check VCCIN/OUT<br />
IC1001,IC100<br />
Replace X1005<br />
Replace IC1004<br />
No<br />
ok<br />
Replace IC401<br />
Replace L5004<br />
No<br />
Replace IC1001,IC100<br />
Copyright ⓒ 2010 LG Electronics. Inc. All right reserved.<br />
Only for training and service purposes LGE Internal Use Only
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