Charging Trouble - LG -T500 Service Manual

4.5 Charging Trouble

TEST POINT
CIRCUIT
VBAT
VDD_IO_1V8
R400
47K
C400
USB_DM
1u
USB_DP
UART_RX
UART_TX
VDD_IO_1V8
R410
10K
I2C_SCL
I2C_SDA
MUIC_INT_N
LGE Internal Use Only
Figure 4.5
Connected to CN401 #1 pin (TP01)
C5
BATT1
D5
BATT2
R425 10
A2
DN
R426
10 A3
DP
A5
U1
U401
A4
U2
B1
AUD1
C1
AUD2
A1
MIC
Connected to CN401 #1 pin (TP01)
TP01
E4
TP01
VBUS1
E5
VBUS2
E3
D-
E2
D+
E1
ID
2.2K
D1
RES
R406
D3
DSS
B5
EXPDET
D2
CAP
C402 C403
1u 1u
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4. TROUBLE SHOOTING
VUSB_CHG_IN
MUIC_IO_M
MUIC_IO_P
1800
MUIC_ACC_ID
FB401
VUSB_LDO_4V9
Only for training and service purposes
C401
0.1u