LG FA162 - Electrical Troubleshooting Guide of Audio Part

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ELECTRICAL TROUBLESHOOTING GUIDE OF AUDIO PART
μ-com part check-1
Refer to
SMPS troubleshooting.
Check if output voltage
of IC100 is 3.5 V.
Replace the related parts.
Check voltage of
IC101(LC87FC096AVU) Pin49.
Check the related parts
of IC100(AZ7027).
Check
CN103 Pin11
3.7 VA.
NO
NO
Check
if input voltage of IC100 is
over 3.5 V.
Check both
end voltage of IC100
(AZ7027).
NO
YES
YES
YES
YES
YES
NO
1. μ-COM PART CHECK-1
OK OK