LG -MC2670 Service Manual page 43

LG-MC2670
Checking Flow
SETTING : "Vibrator on" at Sounds of test menu
START
Check the state of
Contact of Vibrator
Yes
Does Vibrator work Properly?
Yes
Is the voltage across D400
over 2.5V?
Yes
Is the voltage across R446
Under 3V?
Yes
Check the signal level at
MSM_MOTOR_EN=high?
Yes
Vibrator will
Work properly
No
Re-contact vibrator
No
Replace Vibrator
No
Check the soldering of
Q404, R442, D400
Yes
Replace Q404, R442, D400
No
Check the soldering of
Q405, R446, R448
Yes
Replace Q405, R446, R448
No
Replace MSM
40
No
Re-soldering Q404, R442, D400
No
Re-soldering Q405, R446, R448