LG KG920 - Page 93

4. TROUBLE SHOOTING
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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 2
of Q300 high ?
YES
NO
Resolder R339, R340
Is the voltage at pin 2
of D300 = VBAT ?
YES
Check the soldering
of CN103(KEY board) ?
YES
Check the connection
vibrator ?
YES
Replace vrbrator
YES
Vibrator
Working well !
Check the soldering
of R339, R340
YES
NO
NO
Resolder CN103
Check the soldering
of D300
YES
NO
Resolder D300
Replace D300
NO
Reconnect vibrator
NO
Figure 4-34.