LCD TV SERVICE MANUAL
LCD TV SERVICE MANUAL
LCD TV SERVICE MANUAL
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2. Digital <strong>TV</strong> Video<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 />
No<br />
No<br />
No<br />
No<br />
No<br />
No<br />
No<br />
No<br />
Check +5V_USB Voltage<br />
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 />
Check Mstar LVDS Output Replace Mstar(IC100) or Main Board.<br />
No<br />
ok<br />
Replace IC401<br />
Replace L5004<br />
No<br />
Replace IC1001,IC100<br />
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Only for training and service purposes LGE Internal Use Only
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