LG MCV903 - SECTION 3. AUDIO ELECTRICAL PART; AUDIO ELECTRICAL TROUBLESHOOTING GUIDE

3-1
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Only for training and service purposes
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1. MICOM PART CHECK I
OK OK
NO
NO NO
Replace the related
part
Is IC101 KIA7042
output 4.3V?
YES
YES
YES YES
YES YES
Check the IC100
87F5NC8A 4
PIN power
YES
Refer to SMPS
Troubleshooting.
MICOM PART
HECK I
Check
CN710 7PIN
P- SENS
NO
Is IC101
KIA7042
5V?
Is IC101
KIA7042
input 5V?
Check the
related part of IC101
KIA7042
AUDIO ELECTRICAL TROUBLESHOOTING GUIDE
SECTION 3. AUDIO
ELECTRICAL PART