LG FA162 Service Manual

3-10
ELECTRICAL TROUBLESHOOTING GUIDE OF AUDIO PART
5. POWER AMP PART CHECK
YES
YES
YES
YES
YES
YES
Power AMP part check
Refer to SMPS troubleshooting.
Check resistance power
IC700: R700, L700, L703.
Replace the related part.
Check input power
of IC700 Pin29, 30, 31, 36, 37, 38.
Check PWM modulator input
Pin5, 6, 14, 18.
Power IC700,
Pin27, 28, 32, 35, 39, 40 output.
OK
NO
NO
NO
CN103
Pin14, 15: 27 V
Check
IC700 Pin1, 2, 22 :+12V
input.
Check output line
coil (L701, L702).

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