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Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
4. TROUBLE SHOOTING
LGE Internal Use Only
SETTING : Enter the engineering mode, and set vibrator on at vibration of BB test menu
CHECKING FLOW
START
Is the voltage at pin 3
of Q102 toggled?
(TP1)
YES
NO
Is the voltage at pin2
Of Q102 toggled?
(TP2)
YES
Connection of vibrator
Is good ?
YES
Replace vibrator
YES
Vibrator
Working well !
Check the soldering of
L108,R141,C171, Q102
NO
Replace the main board.
Reconnect vibrator
NO
Check the soldering
or replace Q102