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4.5 Charging Trouble
TEST POINT
CN401 & 1 Pin
(connected to TP01)
CN401 & 1 Pin
(connected to TP01)
CIRCUIT
VBAT
VDD_IO_1V8
R401
47K
C401
USB_DM
1u
USB_DP
UART_RX
UART_TX
VDD_IO_1V8
R409
10K
I2C_SCL
I2C_SDA
MUIC_INT_N
LGE Internal Use Only
TP01
Connected to CN401 #1 pin (TP01)
C5
BATT1
D5
BATT2
R403
10
A2
DN
R404
10
A3
DP
A5
U1
U401
A4
U2
LP8727
B1
AUD1
C1
AUD2
A1
MIC
- 79 -
U401 & E4,E5 Pin
(TP01)
U401 & E4,E5 Pin (TP01)
TP01
E4
VBUS1
E5
TP01
VBUS2
E3
MUIC_IO_M
D-
E2
MUIC_IO_P
D+
1800
E1
ID
FB403
2.2K
D1
RES
R408
D3
DSS
B5
VUSB_LDO_4V9
EXPDET
D2
CAP
C411
C412
1u
1u
Copyright © 011 LG Electronics. Inc. All right reserved.
4. TROUBLE SHOOTING
VUSB_CHG_IN
VUSB_CHG_IN
C402
0.1u
MUIC_ACC_ID
Only for training and service purposes
R406
DNI
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