LG GD510 - Bluetooth Usage and Software Upgrade

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LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
5. Trouble shooting
GD510 Operational Description Revision A
LG Electronics 61/113 LGE Property
5.2 Power on Trouble
Check Points
-Battery Voltage (Need to over 3.35V)
-Power-On Key detection (PWRON signal)
-Outputs of LDOs from PMIC
TP1
TP2
RTC_2V11
C209
100n
VIO_2V62
100K
R206
NC7WZ08L8X
U203
34
25
16
87
A1 VCC
B1 Y1
Y2 B2
GND A2
smho
K
2
3R
RTC_2V11
Q1
KTC4075E
1
2
3
R1
100K
KTC4075E
Q202
1
2
3
R2
10Kohms
KP_OUT[2]
KP_IN[6]
_RESET
PM_INT
EXTRSTN
PMRSTN
SPOWER_INT
END
PWRON
END_KEY_EN
END_KEY_EN
External Reset Power On
RTC_2V11
C209
100n
VIO_2V62
100K
R206
NC7WZ08L8X
U203
34
25
16
87
A1 VCC
B1 Y1
Y2 B2
GND A2
smho
K
2
3R
RTC_2V11
Q1
KTC4075E
1
2
3
R1
100K
KTC4075E
Q202
1
2
3
R2
10Kohms
KP_OUT[2]
KP_IN[6]
_RESET
PM_INT
EXTRSTN
PMRSTN
SPOWER_INT
END
PWRON
END_KEY_EN
END_KEY_EN
External Reset Power On
TP3