LG KM330 Service Manual page 61

1.3.3 Checking Flow
Enter the Engineer Mode and set Vibrator ON
Check vibrator work
properly ?
Measure pin 1 of C622
=3.2V ?
Does C623, R604,
D603 work
Vibrator will operate properly
Start
YES
YES
YES
properly?
YES
NO
Reposition or change vibrator
NO
Change U601
NO
Re-soldering or change the
component
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