Read LG 47LF11 (CHASSIS:LA92G) Service Manual online
- 24 -
C
2009
9. Digital TV Audio
Check Tuner 5V Power
TU1001 4Pin
NO
Check IC1002
19/22inch model check
IC1005
OK
Check IF_P/N Signal
NO
Replace Tuner.
OK
Check Check Demodulator Input
Clock(X1005-25MHz)
NO
Replace X1005
OK
Check IC1004(LGDT3305) Output
- AR1070, AR1071
NO
Replace IC1004
OK
Check Output Signal
P600 1,2,3,4 PIN
NO
Replace NTP3100L
(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.
10. Analog TV Audio
Check Tuner 5V Power
TU1001 4Pin
NO
Check IC1002
Check IC1005(19",22")
NO
Bad Tuner. Replace
Tuner.
OK
Check SIF buffer signal.
NO
Check SIF Signal line.
OK
Follow procedure All source audio
trouble shooting guide.
NO
Replace Mstar(IC100)
or Main board
Check RF Cable
OK
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