LG -E960 Service Manual page 161

4.21.3 Checking VDDIO, REG_PU, VDD_EE
Settings NFC mode on and check the supplying voltage 1.8V of VDDIO (Pin13), REG_PU (Pin25), VDD_EE (Pin32)
NFC_VEN
TP9003
C9036
DNI
R9006 0
R9008 0
TP9004
C9037 DNI
NFC_IRQ
TP9002
I2C_COMMON_SCL
TP9005
I2C_COMMON_SDA
NFC_SWP
VDD_EE
will add an EXTERNAL EEPROM for eSE
LGE Internal Use Only
25 1.8V
REG_PU
22
LPO
15
SPI_INT
U9002
17
UART_RXD
16
UART_CTS_N
14
UART_RTS_N
12
UART_TXD
TP9006
4
SWPIO_1
3
SWPIO_0
C9038
10u
U9003
9
NC3
Rev.D
1 8
GND VPS
2 7
C9039
SWIO NC2
3 6 330n
NC1 RST
4 5
IO0 CLK
C9022
Keep away from noise trace
12p
X9001 1ZCB26000AB0M
4 3
1 2
R9014
26MHz
DNI
34
SCL
33
SDA
20
XTAL_XOP
19
XTAL_XON
28
TX2
29
TX1
11
R9009 0 CLK_REQ_BCM
CLK_REQ
10
HOST_WAKE
7
R9010 4.7K
NFC_WAKE NFC_WAKE_BCM
8
TM2
NFC_VPWR
VREG_S4_1P8
NFC_VPWR
Rev.D
C9033 C9026 C9028 C9029
4.7u 100n 100n 330n
1.8V
- 161 - Copyright © 2012 LG Electronics. Inc. All right reserved.
4. TROUBLE SHOOTING
C9023 12p
Rev.E Rev.E
R9003
L9002 330n C9014 47p
C9016 C9017
180p 33p
Rev.E
C9019 C9020
180p 33p
Rev.E
R9004
L9003 330n C9015 47p
0
A suggested part is the Coilcraft 0603HL-331XJRC
L9002/L9003
DCR = 1 ohm or less
Current handling 250mA minimum
VREG_MODEM_L6_2P85
+3V0_USIM_NFC
R9007
+VPWR Rev.B
0
Only for training and service purposes
VA9001
MCE62492901
ANT9003 ANTENNA
FEED
0
MCE62492901
ANT9004 ANTENNA
FEED
VA9002