LG -T370 Service Manual page 74

4. TROUBLE SHOOTING
SETTING : Enter the engineering mode, and set vibrator on at vibration of BB test menu
START
No
Check the soldering
Resolder the Pad.
of vibrator ?
Yes
No
Check the TP1
Replace U01
Is PWM Signal OK?
Yes
No
Is the voltage at VB401
Replace the Pad
(+) high?
Yes
Replace vibrator
Yes
Vibrator
Working well !
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