Electrical Troubleshooting Guide Of Audio Part; Micom Part Check I - LG MBD62I Service Manual

ELECTRICAL TROUBLESHOOTING GUIDE OF AUDIO PART

1. MICOM PART CHECK I

MICOM part check I
YES
Check P7904
6PIN P-SENS
YES
Check
power of both
terminals of IC101
KIA7042
YES
Check IC100 78KO/KF2
1PIN power
YES
OK
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Only for training and service purposes
SECTION 3 ELECTRICAL
NO
Refer to SMPS
Troubleshooting
Check
NO
if IC101 KIA7042
input is over 5V.
YES
Check if output voltage
of IC101 KIA7042 is 4.3V
YES
OK
Check
NO
the related part of
IC101 KIA7042
YES
3-1
NO
Replace the
related parts
LGE Internal Use Only