4. TROUBLE SHOOTING
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LGE Internal Use Only
Copyright © 011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
CHECKING FLOW
SETTING : Enter the engineering mode, and set vibrator on at vibration of BB test menu
START
YES
NO
Replace vibrator
YES
Vibrator
Working well !
Check the soldering
of vibrator ?
Resolder the Pad.
YES
Replace the Pad
NO
Is the voltage at VB401
(+) high?
Check the TP1
Is PWM Signal OK?
Replace U201
NO
YES