Charging Trouble - LG -T370 Service Manual

4.4 Charging Trouble

TP1
VBAT
C411
1u USB_DM
USB_DP
UART_RX
UART_TX
VDD_IO_1V8
R402
10K
I2C_SCL
I2C_SDA
MUIC_INT_N
LGE Internal Use Only
CN401 #1 pin(Connected
VDD_IO_1V8
Connected to CN401 #1 pin (TP01)
R401
47K
C5
BATT1
D5
BATT2
R405 10
A2
DN
R406
A3
10
DP
A5
U1
A4
U2
B1
AUD1
C1
AUD2
A1
MIC
U401 & E4,E5 Pin(TP1)
to TP1)
Figure 4.5
E4
VBUS1
E5
VBUS2
E3
D-
E2
D+
E1
ID
U401
2.2K
LP8727-B D1
RES
EAN62339701
R410
D3
DSS
B5
EXPDET
D2
CAP
- 70 - Copyright © 01 LG Electronics. Inc. All right reserved.
4. TROUBLE SHOOTING
#1 Pin
VUSB_CHG_IN
TP1
MUIC_IO_M
MUIC_IO_P
MUIC_ACC_ID
FB401 1800
VUSB_LDO_4V9
Only for training and service purposes
C412
C418
1u
DNI