
- 78 -
LGE Internal Use Only
Copyright © 011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
CHECKING FLOW
SETTING : Enter the engineering mode, and set vibrator on at vibration of BB test menu
YES
NO
Replace vibrator
YES
Vibrator
Working well !
Check the soldering
of vibrator ?
Resolder the Pad.
YES
Resolder the R238
& R248
NO
Is the voltage at VB200
(+) high?
Check the R238,R248
Is Signal OK?
Replace U101
NO
YES
START