LG GD910 - Call Logs, Speed Dialing, and Settings

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Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
3. BB Circuit Technical brief
GD910 service manual
3.4. Power ON/OFF
[Figure 3.4-1] Remote power on and End-key power on circuit
Voltage level of PWRON pin is high before push the END_KEY button.
If push the END_KEY button, voltage level of PWRON pin is changed from high to low.
ON_OFF1 is a power-on input for SM-POWER3 with active low edge.
ON_OFF2 is for power off alarm clock.
SEND : KEY_IN(1) + KEY_OUT(1)
CLR : KEY_IN(2) + KEY_OUT(1)
Remote Power & Side Key
R317
47K
10K
R320
220K
R322
VA300
ICVL0505101V150FR
2
56
31
4
EMX18
Q301VBAT
VBAT
R318
100K
1
2
3
4
5
6
CN301
C308
10u
220K
R321
Q300
1
3
2
120
2SA2030
R319
KEY_OUT(1)
KEY_IN(2)
KEY_IN(1)
RPWRON
PWRON
KP_IN(6)
KP_OUT(0)
END_KEY
END_KEY