Electrical Troubleshooting Guide - LG SL8YG Service Manual

ELECTRICAL TROUBLESHOOTING GUIDE

No Pairing
Check LED status.
Yellow LED blinks irregularly.
NO
Red LED is turned on.
NO
Check SMPS board or
Module connection.
No Sound
Check sound status.
Sound cut off irregularly.
NO
Check LED status.
LED is Red.
NO
AMP PVDD
(RCN301 pin9, 10) no output.
NO
AMP 12 V (RIC308 pin4)
no output.
NO
3.3 V (RIC307 pin3)
no output.
Check Module or Connection.
YES
interference.
YES
Remate.
YES
interference.
YES
Remate.
YES
Check SMPS board.
YES
Check RIC308.
YES
Check RIC307.
5-6
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Turn off the equipment that
gives interference.
Turn off the equipment that
gives interference.
Only for training and service purposes.