Power On/Off - LG GW520 Service Manual

3.4. Power ON/OFF

R201 0
RPWRON
R202 0
RPWRON_EN
R207 0
RPWRON_DBB
ADI RPWRON(H)
END
END_KEY
R215
10K
R221
100K
SEND
SEND
KEY_ROW5
KEY_COL5
KEY_COL6
END_KEY
RTC ALARM ON
RTC_OUT
1V35_VPLL
T VBAT
[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.
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
2V11_RTC
R204
100K
KEY_COL7
PWRON
1 2 3
Q200
EQBN0013701
EMX18
6 5 4
KEY_ROW5
R216
0
R220
END_KEY
DNI
R222
RPWRON
DNI
R223
DNI
VBAT
MULTI END
MULTI END
VA806
varistor
R200
27K
R203
DNI
2V62_VIO
VBAT VBAT
3. BB Circuit Technical brief
GW520 service manual
RTC_OUT
R203
DNI
1V35_VPLL
2V62_VIO
VBAT VBAT
- 39 -
R200
27K
LGE Internal Use Only