LG FA162 Service Manual

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ELECTRICAL TROUBLESHOOTING GUIDE OF AUDIO PART
7. TUNER FUNCTION CHECK
Tuner function check
Replace the related part.
Check SMPS.
Replace the related part.
OK
Check μ-com (IC100)
Pin3, 69 communication.
Refer to SMPS troubleshooting.
Check IC201.
Check tuner module power
(Pin6 3.3 V).
Check IC104 Pin3.
NO
NO
NO
NO NO
Check
L201, L202, C221, C226,
R242, R243.
Check IC201
Pin14: 5 V,
Pin5, 36, 46: 3.3 V
Check IC201
Pin41 SDOUT.
Check
tuner module (TU100)
operation.
YES
NO
YES
YES
YES
Check IC201
CS5346 Pin21, 22 input
waveform.
Check IC201
CS5346 Pin42, 43 output
waveform.
NO
NO
YES
YES

LG FA162 Specifications

General

Karaoke	No
Speaker type	-
RMS rated power	160 W
Number of speakers	2
Equalizer	Yes
Tuner type	Digital
Supported radio bands	AM, FM
Preset stations quantity	50
Type	Home audio micro system
Product color	Black
Playback disc formats	CD audio
Audio formats supported	MP3, WMA
USB 2.0 ports quantity	1
Apple docking compatibility	Not supported
Power source	AC