LG 37LH200C - Page 15

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2. Digital TV Video
Check RF cable & Signal.
Check Tuner 5V Power
IC1001 4pin
OK
OK
Check Check Demodulator Input
Clock(X1005-25MHz)
Check IC1002.
No
Check IF_P/N Signal
OK
Replace Tuner.
No
Replace X1005.
No
OK
Check Mstar LVDS output
R812, R813,..., R821
Check IC1004(LGDT) Output
- AR1070, AR1071
OK
Replace IC1004.
No
Replace Mstar(IC100) or Main board.
No
3. Analog TV Video
Check RF cable.
Check Tuner 5V Power.
IC1001 4pin
OK
Check CVBS signal.
TU1001 #19 Pin
Check IC1002
No
OK
Replace Tuner.
No
OK
Check Mstar LVDS output Replace Mstar(IC100) or Main board.
No