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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 Q300 high (0.65V)?
YES
Is the voltage at pin 2
of Q300 low (2.3V) ?
YES
Is the voltage at pin 1
of Q300 high (VBAT) ?
YES
Check the soldering
of vibrator ?
Replace vibrator
Vibrator
Working well !
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
NO
NO
NO
NO
YES
YES
- 51 -
4. TROUBLE SHOOTING
Check the soldering
of R331, R332
Check the soldering
of R328,R330
Check the soldering
of R329, Q300
Resolder or
Replace vibrator
LGE Internal Use Only
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