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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 ?
YES
Is the voltage at pin 2
of Q300 low ?
YES
Is the voltage at pin 1
of Q300 high ?
YES
Check the soldering
of CN601 ?
YES
Check the soldering
of vibrator ?
YES
Replace Vibrator
YES
Vibrator is
Working well !!!
NO
Check the soldering
of R371, R372
YES
NO
Check the soldering
of R368
YES
NO
Check the soldering
of R369
YES
Replace Q300
NO
NO
- 73 -
4. TROUBLE SHOOTING
NO
Re-solder R371, R372
NO
Re-solder R368
NO
Re-solder R369
Re-solder CN601
Re-solder vibrator
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