LG -E455 Service Manual page 205

USIM Socket
+3V0_VSIM2_MTK +3V0_VSIM_VCC
USIM2_CLK CLK2 I/O1
C3_1 C7
USIM2_DATA I/O2 CLK1
C7_1 C3
USIM2_RESET_N RST2 VPP1
C2_1 S500 C6
VPP2 RST1
C6_1 C2
VCC2 GND1
C1_1 C5
GND2 VCC1
C5_1 C1
C503 C504 C511 C505
22p 22p 22p 1u
Single SIM:EAG63032701
J502
+3V0_VSIM_VCC 1 4
C1 C5
2 5
USIM1_RESET_N C2 C6
3 6
USIM1_CLK C3 C7
7 10
GND1 GND4
8 9
GND2 GND3
Melfas TOUCH
+1V8_VIO_MTK
I2C_SENSOR_SCL
I2C_SENSOR_SDA
TOUCH_INT
VA501 VA500
ECO
3.5pi Ear Jack Connector
R512
HOOK_DETECT
10K
EARMIC_BIAS
R517
EARMIC_N
2.2K
HS_JACK_DET
EAR_L
C510
EAR_R
DNI
FM_ANT
EARMIC_P
C513 C514
1n 1n
MAIN GND
LGE Internal Use Only
+3V0_VSIM_NFC
+3V0_VSIM_MTK
+3V0_VSIM_VCC
USIM1_DATA
USIM1_CLK
USIM1_RESET_N
C508 C506 C507 C512
1u 22p 22p 22p
SD_CLK
SD_DATA[0]
SD_DATA[1]
SD_DATA[2]
SD_DATA[3]
SD_CMD
NFC_SWP
USIM1_DATA
C534
DNI
+3V0_TOUCH_MTK
+1V8_VIO_MTK
6 5
7 4
8 3
9 2
TOUCH_ID
10 1
VA502
CN506
C524
1u
+1V8_VIO_MTK
HS_JACK_DET STATE
HIGH(DEFAULT) UNMATING
LOW MATING
J501
47K
FB503 1800 S/W_Detect
R583 10
R569 FB500 1800 SPK_L
R584 SPK_R
10 FB501 1800
GND
L500 100n
MIC
FB502 1800
C517 C518
22n 22n
L501
R579
100n
DNI
ZD501 ZD502 ZD503 ZD504
Close to 3.5pi ear-jack
R520 100p
FM_RX_IN_N
MAIN GND R521
HS_GND
DNI
Micro SD
MMC_DETECT SWITCH
HIGH (DEFAULT)
OPEN
+3V3_MICRO_SD LOW ( DETECT ) CLOSE
+1V8_VIO_MTK
J500
1 8
DAT2 DAT1
2 7
CD/DAT3 DAT0
3 6
CMD VSS
4 5
VDD CLK
9 11
GND1 POL
10 12
SD_DETECT
GND2 DET
2.85T
C533 C509
VA507
DNI
2.2u
2.2u
POWER ON KEY
R578
PWR_ON_SW_N
2
1K
1
CN507
REV.B
FPCB_KEY Connector
VBUS_CHG_IN
+2V5_AVDD1_MTK
VBATT
USB_ID
R526
MAIN_WHITE
+2V8_VRTC_MTK 1
C521 C522
KCOL1
100n 22p
HOMEKEY
KROW1
- 205 -
Battery Conn.
1.2V
VBATT
VTREF
CN500
2mm
D1
1
R507
2
BATT_TEMP_ADC
3
1K
4
ZD500
C500 C501 C519 C502
VA522
47u D2
100n 100p 1u
DNI_VARISTER_1005
VOLUME, QUICK KEY
R572
KROW0
100
CN508
1 VOL_UP
R573
KCOL6 2
100 3
VOL_DOWN
R574
KROW1
100
CN505
1 30
SPK_OUT_N
2 29
SPK_OUT_P
3 28
4 27 USBH_DM
5 26
USBH_DP
6 25
7 24
+3V0_VIBR_MTK
8 23
9 22 VMIC
LED_R
10 21
LED_G
11 20
LED_B
12 19
13 18
14 17
MIC_N
15 16
MIC_P C523
33p
Copyright © 2013 LG Electronics. Inc. All right reserved.
7. CIRCUIT DIAGRAM
FGN_IC
For MTK Fuel Gauge
R510
20m
BATT_ID_PULLUP
R581
BATT_ID
100
QUICK_MEMO
KCOL1 R575
CN509
100 1
2
R576
KROW0
100
Only for training and service purposes