LG 42CS460 Service Manual page 20
Chassis : lb21c
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Also See for 42CS460:
- Owner's manual (88 pages) ,
- User manual (86 pages) ,
- Service manual (54 pages)
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8. Digital TV Audio
Check RF Cable & Signal
ok
Check Tuner 3.3V Power
L3703
ok
Check Tuner 1.8V Power
IC3703 2 pin : 1.8V
ok
Check IF_P/N Signal
TU3700 10/11 Pin
ok
Follow procedure
'8. All source audio'
trouble shooting guide.
9. Analog TV Audio
Check RF Cable & Signal
ok
Check Tuner 3.3V Power
L3703
ok
Check Tuner 1.8V Power
IC3703 2 pin : 1.8V
ok
Check SIF Signal
TU3700 6 Pin
ok
Follow procedure
'8. All source audio'
trouble shooting guide.
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Only for training and service purposes
No
Replace L3703
No
Replace IC3703
No
Bad Tuner. Replace Tuner.
No
Replace L3703
No
Replace IC3703 .
No
Bad Tuner. Replace Tuner.
- 20 -
LGE Internal Use Only
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