LG LHD625 User Manual

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ELECTRICAL TROUBLESHOOTING GUIDE
5. NO AUDIO OUTPUT
No AUDIO output
IC601
PWM_3V3 OK?
Check IC105 pin3 supply 5.5 VA and pin2.
YES
YES
YES
YES
NO
X601
24.576 MHz OK?
IC700, IC701, IC702
36 V, 12 V OK?
IC601 pin19, 20, 21, 22, 23
I2C data OK?
IC700, IC701, IC702
pin4, 16, 18 OK?
Replace X601.
Check SMPS 36 V and IC104 12 V.
Check IC500 pin157, 161, 162, 160, 158.
Check IC100.
Replace IC700, IC701, IC702.
YES
YES
NO
NO
NO
NO

LG LHD625 Specifications

General

Brand	LG
Model	LHD625
Category	Home Theater System
Language	English