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SECTION 3. ELECTRICAL PART
AUDIO ELECTRICAL TROUBLESHOOTING GUIDE
1. MICOM PART CHECK I
MICOM PART
HECK I
YES
Check
NO
CN101 6PIN
P-SENS.
YES
Check
NO
power of both
terminals of IC101
KIA7042
YES
Check IC100
LC87F5NC8A 4 PIN
power.
YES
OK
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Refer to SMPS
troubleshooting.
Check if
NO
IC101 KIA7042
input is over 5V.
YES
Check if output voltage
of IC101 KIA7042 is
4.3V.
YES
OK
3-1
Check the
NO
related part of IC101
KIA7042.
YES
Replace the
related parts.
LGE Internal Use Only
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