LG KG245 Service Manual page 70

Checking Flow
SETTING : Enter the engineering mode, and set vibrator on at vibration of BB test menu
START
Is the voltage at pin 3
of Q302 high ?
YES
Is the voltage at pin 2
of Q302 low ?
YES
Is the voltage at pin 1
of Q302 high ?
YES
Check the soldering
of CN601 ?
Check the soldering
of vibrator ?
Replace vrbrator
Vibrator
Working well !
NO
NO
NO
NO
YES
NO
YES
YES
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4. TROUBLE SHOOTING
Check the soldering
of R353, R357
YES
Resolder R353, R357
Check the soldering
of R334
YES
Check the soldering
of R351
YES
Replace Q302
Resolder CN601
Resolder vibrator
NO
NO
Resolder R334
NO
Resolder R351