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Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
4. TROUBLE SHOOTING
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
SETTING : Enter the engineering mode, and set vibrator on at vibration of BB test menu
START
Is the voltage at pin 2
of Q300 high?
YES
NO
Is the voltage at pin 4
of Q300 high (VBAT) ?
YES
Check the soldering
of vibrator ?
YES
Replace vibrator
YES
Vibrator
Working well !
Check the soldering
Q300
NO
Check the soldering
of Q300
Resolder or Replace vibrator
NO
CHECKING FLOW
4.6 Vibrator Trouble