LG 32LD350 Service Manual page 35

2. Digital TV Video
Check RF Cable & Signal
ok
Check Tuner 5V Power
L5004
ok
Check Tuner 3.3V Power
L5003
ok
Check Tuner 1.2V Power
IC5001 2 pin : 1.2V
ok
Check IF_P/N Signal
TU5001 17/18 Pin
ok
Check IC1004(LGDT) VCC
ok
Check Demodulator Input
Clock(X1005-25Mhz)
ok
Check IC1004(LGDT) Output
- AR1070, AR1071
ok
Check Mstar LVDS Output
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Only for training and service purposes
No
Check +5V_USB Voltage
IC401
No
Replace L5003
No
Replace IC5001.
No
Bad Tuner. Replace Tuner.
No
Check VCCIN/OUT
IC1001,IC100
No
Replace X1005
No
Replace IC1004
No
Replace Mstar(IC100) or Main Board.
No
Replace IC401
ok
Replace L5004
No
Replace IC1001,IC100
LGE Internal Use Only