LG -A230 Service Manual page 78

CHECKING FLOW
SETTING : Enter the engineering mode, and set vibrator on at vibration of BB test menu
LGE Internal Use Only
START
Check the soldering
of vibrator ?
YES
Check the R238,R248
Is Signal OK?
YES
Is the voltage at VB200
(+) high?
YES
Replace vibrator
YES
Vibrator
Working well !
NO
Resolder the Pad.
NO
Replace U101
NO
Resolder the R238
& R248
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4. TROUBLE SHOOTING
Only for training and service purposes