LG LG400GT User manual

Date: January, 2008 / Issue 1.0
Service Manual Model : LG400GT
Service Manual
LG400GT
Internal Use Only
Z3X-BOX.COM

- 71 -
GND
IN
OUT
PWR
URXD
UTXD
3G 2.5G
GND
RX
TX
VCHAR
ON_SW
VBAT
13
Place closest to U101.H16
VRWLED
43
Place closest to U13
80
VRABB
C
VRMEM
1
D
1.8/2.8
VRUSB
2
3.3
6
117
5
16
20
20
VREXTL
7
2
C
C
VRSIM 15
Isolate
3
E
1.8/2.85
VRRTC
2.8
Current(mA)
20
10
5
F
A
1.8
E
A
115
VRIO
H/W REV.
14
1.3/1.05
Voltage(V)
D
15
8
1.8/2.85
1.8
6
200
310
VRPLL
VRMMC
C
E
100
D
12
B
1.8
E
200
F
1.3/1.4/1.05
VREXTH
100
Domain
9
SIM_CONNECTOR
8
4
200
TEST TP
N.A.
200/1001.8/2.8
9
B
Place closest to U101.G16
F
D
0.1uC130
B
C
E
HSMICBIAS
C154
DTC144EM-T2L
Q100
B14 A15 VRWLED_2
VSP_VCK
T3
T4 VSP_VDR
VSP_VDX
T2
VSP_VFS
U3
WAKEUP1
M12
1u
K17
H16 VCC5_1
H17 VCC5_2
F10 VCC6
VCCS A10
U12
VIBDR
VRABB
B2
VREXTH
L17 VREXTL
G17
J16 VRIO
VRMEM
U11
T10 VRMMC T12 VRPLL
N17 VRRTC
VRSIM
A3 B8 VRUSB
VRWLED_1
U1
U2
TDO
K12
TESTRESET
TESTV B17
R1
TMS
VAC B11
VBACKUP R17
B12
VBAT
VBATS B10
M16
VBG
B9 VBUS
VCC1
L16
U10 VCC2_1
VCC2_2
T11
VCC3
C3
K16 VCC4_1
VCC4_2
SE0_VM_TXD_TEST3
M10
SIMDTC
H1
SPKGND_1
SPKGND_2 N1
SPKNA_1 M6
M7
SPKNA_2
SPKND_1 M1
M2
SPKND_2
SPKPA_1 K6
L6
SPKPA_2
SPKPD_1 K1
K2
SPKPD_2
SPKVDD_1 L1
L2
SPKVDD_2
STARTADC
M9
TCK T1
TDI
U17
OE_INTN__TEST1
B3
U15 ONNOFF
OSC32KIN R16
OSC32KOUT T16
P1_INT2
R2
A12
PCHGAC
PCHGUSB A11
T15 PCLKREQ
T14 PWON
RCV_TEST4
F6
M17
REFGND
G12
REGEN
U13 RPWON
SCL1
T8
U7 SDA1
B6
A5
IREF L12
C16
LED_A E17
LED_B
LED_C F17
MCLK1
M11
MICBIAS G6
MICIN F2
G2
MICIP
NC1
A1
NC2
A2
A16 NC3
NC4
A17
NC5
B1
T17 NC6
U16 NC7
NC8
G16
GND_VBUS
F9
HSDET F16
D2
HSMIC
H6
HSMICBIAS
HSOL G1
HSOR F1
J6
HSOVMID
T7 I2S_SCK
I2S_SDR
T6
U5 I2S_SDX
U6 I2S_WS
ICTLAC1 F11
ICTLAC2 F12
A13
ICTLUSB1 B15
ICTLUSB2
ID_USB M8
H12
CKEN
P16
CLK32KOUT
B4 DAT_VP_RXD_TEST2
A7 DM_TXD_SPKR_L
DP_RXD_MIC_R
A8
H2
EARN J2
EARP
FILTERAPLL P2
FML C2
GND_DBB
J12
GND_PWR1
T9
GND_PWR2_1
D16 GND_PWR2_2
C17
U8 GND_PWR3
A6 GND_PWR4
GND_PWR5
T3031FZPH
U100
ADCIN3
B7
F7 ADCIN4
F8 ADCIN5
AUDVMID E1
C1
AUXI_FMR
BM_PRECH B16
BM_SEL
R148
NA
NAR146
VBAT
0.1uC123
2.2u
C146
750K
R?
NA
R143
0.1u
V_ABB
0.1u
C149
C126
NA
R100
R117 120K
1u
680R108
C155 C159
2.2u
C121
10u
C112
4.7n
V_RTC
V_IO
C136 0.1u
TP108
C139
2.2u
SIM_PW_CTL
NA
R131
4.7u
C116
R130
NA
V_SIM
R123 100K
470nC132
C107 0.1u
C152
R106
1u
V_IO
680
NA
R138
2.2KR121
0.1u
0.1u
C428
C115
C129
V_IO
0.1u
2.2K
R120
C101
OJ103
10p
1u
C138
0R114
V_IO
C142
0.1u
V_SIM
100KR124
R109 680
R416 DNI
R126 82
VBAT
680R102
2.2u
TP109
C145
47p
C110
R133
3.3
C113
4.7u
R105 680
C120
V_MMC
1000p
10K
R147
OJ101
V_EXTL
MICBIAS
C143
22p
K14
VSSRF4
VSSRF5 L13
VSSX
E15 B14 VSS_PLL
R8
WAKEUP_REQ
XANATST3 U15 XANATST4 U16
T16
XANATST5 R17 XANATST6
D15
XTAL
VBAT
VBAT
VSS5
A10
VSS6
A12
VSS7
T14
U12 VSS8
U5 VSS9
M13 VSSA1
VSSA2
N15
VSSOSC1 J14
VSSOSC2 J15
VSSOSC3 H15
VSSPBIAS
U11
M15
VSSRF1
G15
VSSRF1_1 H14
VSSRF1_2
VSSRF2 L15
K15
VSSRF3
C13 VDD_PLL U10 VDD_RST
VDD_USIM
T12
M8
VDR T6
VDX
K9
VFSRX
VPP1
B17 A17 VPP2 E17 VREF
R16 VREF1
R1 VSS1
VSS10
U8
VSS11
C17
VSS2
H1
VSS3
C1
VSS4
A7
VDDX
D16 R10 VDD_DBB1
VDD_DBB2
U6
VDD_DBB3
N1
B4 VDD_DBB4
B15 VDD_DBB5
VDD_DBB6
A11
A8 VDD_DBB7
VDD_DBB8
A13
VDD_IO1
U3 U7 VDD_IO2
A15 VDD_IO3
VDD_IO4
C9
VDD_IO5
A3
VDD_MIF1
K1 E1 VDD_MIF2
USB_SE0_UART_TX L8
USB_TXEN_UART_RTS M7
USIM_CLK P10
USIM_IO R11
USIM_PBIAS T11
M10
USIM_PWCTRL
N11
USIM_RST
R7
VCLKRX
P16 VDDA1 P15 VDDA2
VDDOSC H16
T15 VDDR1RX F16 VDDR1TX1 F15 VDDR2
VDDRF
H17
VDDRF1
G16
T2 TRSTN
F12
TSPACT11 TSPACT12 H10
C14
TSPACT13 TSPACT14 E12 TSPACT15 G10
TSPACT9_GPIO_4_CDI R9
TXHB
G17
TXLB
F17
UART_CTS R2
R3
UART_RTS_SD_IRDA
UART_RX L7
UART_TX P3
USB_BOOT_GPIO_3_LPG
T10
USB_DATA_UART_RX R5
USB_RCV_UART_CTS T4
L17 RXDCSP
M16 RXEGSMM
L16 RXEGSMP
N17 RXGSMM
M17 RXGSMP
RXPCSP
K16 RXPSCM
J16
SCL_TRIT N7
R6
SDA_TRIT
SENSE
A16
SPARE2 U2
SPARE3 U1
A1 TCK B1 TDI B2 TDO A2 TMS
NC3 H13
G13
NC4 NC5 F13
N12
NC6 NC7 M12
L12
NC8 NC9 K12
NCS3
L5
ND_CE1 D3
E5
ND_NWP_CAM_D4
NMOE
M1
N10
ONNOFF
RES1
D4
RES2
R14
L1 RNW
RXDCSM
K17
LCD_NRST C10
NBHE
L3
M2 NBLE
T1 NBSCAN
NC1 K13
NC10 J12
H12
NC11 G12
NC12 L11
NC13
NC14 K11
J11
NC15
NC16 H11
NC17 L10
K10
NC18
NC19 J10
NC2 J13
G11
KBC0 KBC1 C16
E13
KBC2 KBC3 C15 KBR0 F11 KBR1 E11
C12
KBR2 KBR3 H9
E9
LCD_DAT_NDF_0 LCD_DAT_NDF_1 B8 LCD_DAT_NDF_2 C8 LCD_DAT_NDF_3 E8
B7
LCD_DAT_NDF_4 LCD_DAT_NDF_5 D8
C7
LCD_DAT_NDF_6
B6
LCD_DAT_NDF_7
D2 GPIO_36_NCS1
M3 GPIO_40_NRDY
GPIO_41_ADV
J7
L6 GPIO_42_CKM
N3
GPIO_43_MCSI_CK
GPIO_43_NCS0
E3
M5
GPIO_44_MCSI_FS
GPIO_45_MCSI_TX K7
P2
GPIO_46_MCSI_RX
N9
GPIO_5_TSPACT8
GPIO_7_NFWP_CAM_D2
G6
F10
GPIO_8_KBR4
B12
GPIO_9_KBC4
I2C_SCL R4
I2C_SDA N6
IREF
R15
GPIO_1_PWT
K8
A5
GPIO_21_CAM_LCLK
GPIO_23_SPI_CLK
G9
F7 GPIO_24_SPI_MISO
C5 GPIO_25_SPI_MOSI
E6 GPIO_26_SPI_NCS0
G8 GPIO_27_SPI_NCS1
C4
GPIO_28_SPI_NCS2_CAM_D7
GPIO_29_BU_CAM_D6
G7
T3 GPIO_2_PWL
B3 GPIO_30_LT3_CAM_D5
GPIO_31ND_RE C3
GPIO_32ND_CLE F6
GPIO_33ND_ALE H8
GPIO_34ND_RDY C2
F5 GPIO_35_NCS2
J2 DATA_ADD7
J4 DATA_ADD8
J6 DATA_ADD9
DCD_TXIR_GPIO_0_CAM_D1 M6
DSR_RXIR_GPIO_47_CAM_D0 N5
FDP
K6
FORCE
B16
C11 GPIO_10_NEMU0
GPIO_11_NEMU1
D10
B11
GPIO_12_LPG_TSPACT10
GPIO_13_LCD_NCS0 E10
GPIO_14_LCD_STB B10
F9
GPIO_15_LCD_RNW
D9
GPIO_16_LCD_RS
B9
GPIO_17_LCD_NCS1
A6
GPIO_18_ND_WE
CKOUT_13MHZ N8
P9
CSCLK
CSYNC M9
DATA_ADD0
K4
L2 DATA_ADD1
H2 DATA_ADD10
DATA_ADD11
H3
DATA_ADD12
H5
G2 DATA_ADD13
G1 DATA_ADD14
DATA_ADD15
H4
DATA_ADD2
K5
K3 DATA_ADD3
DATA_ADD4
K2
DATA_ADD5
J5
DATA_ADD6
J3
G5 ADD22_GPIO_39
H7 ADD23_GPIO_37
ANATST1 T17
U17
ANATST2
APC_LDO_FILTER
R12
M11
APC_OUT
L9
APC_SPARE1
U13 APC_VDO R13 APC_VREF
APC_VSS
N13
CAM_D3_GPIO_19_CAM_HS F8
CAM_D3_GPIO_20_CAM_VS E7
CAM_D3_GPIO_22_CAM_XCLK C6
T9
CD0
CK13MHZ_EN T7
CKIN_32KHZ T8
D6591BUZPH
U101
P8
ABB_IRQ
G3 ADD16
F1 ADD17
F2 ADD18
ADD19
H6
ADD20
J8
F3 ADD21
TP106
R128 DNI
C134
0.1u
100nHL100
10R119
VBUS_USB
R103 680
TP121
TP123
32.768KHz
X100
12
3
4
TP120
MC-146_7pF
NA
R415 0
C119
0.1u
C150
2.2uH
L103
0.01u
C106
C127 0.1u
TP122
R127
15K
V_IO
0.1uC137
RB551V-30TE-17
D100
4.7u
C114
R142
NA
V_SIM
R132 47K
C111
47n
V_SIM
R129
C140
10K
V_IO
0.1u
R122 2.2K
V_USB
10KR125
TP102
NA
R139
VBAT
0.1uC128
1.5M
R118
OJ102
TP119
R111
220K
C108
4.7u
C122
4.7p
1000p
NA
C103
C153
470n
C118
4
NC1
NC2
7
8
NC3
NC4
9
ON_SW
5
RTS
11
2
RX
TX
3
VBAT
6
OJ100
V_RTC
UA100
12
CTS
10
DSR
1
GND
0.1u
C144
750K
R137
1u
V_MEM
V_PLL
C104
C157
0.5p
HOT2 3
100nHL102
X101
W-191-866
26MHz
2
GND1
GND2
4
1HOT1
C148
1u
C105
C102
15p
10p
0.01u
C147
V_IO
0.1uC124
R101 680
100nH
1u
L101
0.1u
C133
C135
1u
C158
0R112
680R104
R140
10K
1u
220K
R115
C131
C100
15p
C141
22p
680R110
NA
R135
VBAT
R113 0
V_EXTH
V_BACKUP
1u
C156
C170
NA
VDDRF1
47p
C125
0
R413
R107 680
0R418
3
CLK
GND1
4
7
GND2
GND3 89 GND4
GND5
10
6IO
RST 2
VCC 1
5VPP
VCHG
J100
0R116
1u
VDDA
C151
47p
RPWON
RPWON USB_BOOT
C109
ANT_SW1
HSOL
KEY_BACKLIGHT KEY_BACKLIGHT
MOTOR_P
UART_TX
UART_RX
SPK_RCV_SEL
LCD_D(0:7)
LCD_ADS
_LCD_WR
KBR(0)
LED_R_EN
SPK_EN
SIM_CLKSIM_IO
VRWLED
LED_B_EN
PCS_RXP
PCS_RXN
MLED1
MLED2
LCD_ID
SIM_RST
DITHERING
USB_DP
USB_DM
UART_DSR
UART_RX
_LCD_CS
JACK_DETECT
JACK_DETECT
CLK32K
RPWON
PWON
TEMPSENSE
BATT_TEMP
STARTADC
UART_CTS
UART_RTS
RPWON
UART_DSR
UART_TX
SPKNA
SPKPA
EAR_P
EAR_N
HSMIC
MICIP
MICIN
VCHG
CKEN
FOLDER
TMS TCK
TDO_ARM
TDI
ADD(19)
ADD(20)
ADD(21)
ADD(22)
RnW
nBHE
nBLE
nMOE
nCS3
FDP
nRDYMEM
nFADV
CKM
nCS0
DATA_ADD(3)
DATA_ADD(4)
DATA_ADD(5)
DATA_ADD(6)
DATA_ADD(7)
DATA_ADD(8)
DATA_ADD(9)
DATA_ADD(10)
DATA_ADD(11)
DATA_ADD(12)
DATA_ADD(13)
DATA_ADD(14)
DATA_ADD(15)
ADD(16)
ADD(17)
ADD(18)
KBC(3) KBC(2) KBC(1) KBC(0)
CLK32K
CKEN
TXHB
GSM_RXN
GSM_RXP
TXLB
DATA_ADD(1)
DATA_ADD(2)
LCD_D(0)
CHG_STATUS
CHG_EN
LCD_RESET
SIM_RST
SIM_CLK
SIM_IO
SIM_PW_CTL
KBR(3) KBR(2) KBR(1) KBC(4)
STARTADC
TX_RAMP ANT_SW2
PA_EN
PA_BAND
LCD_D(7) LCD_D(6) LCD_D(5) LCD_D(4) LCD_D(3) LCD_D(2) LCD_D(1)
DATA_ADD(0)
KBR(4)
DITHERING
CKOUT_13MHZ
UART_CTS
UART_RTS
UART_RX
UART_TX
USB_BOOT
P1_INT2
VIB_EN
7. CIRCUIT DIAGRAM
LGE Internal Use Only
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Z3X-BOX.COM

- 72 -
2
1
7
SPEAKER AMPLIFIER
Memory (64Mb Nor + 32Mb pSRAM)
8
END
3
2
KEYPAD
9
5
B
MENU
SEL
9
6
Rev.D: 1u, 10V
D
CLEAR
UP
Rev.C: 2.2u, 6.3V
#
4
HANDSET MICROPHONE
10
C
6
RIGHT
A
3
A
B
C
E
4
SEND
KEY BACKLIGHT
LEFT
SPK & RCV SWITCH
0
1
5
D
1
*
OK
3
5
8
DOWN
7
4
4.7
R204
2
VA202
C211
KB218
100p
20K
R205
TP210
20K
R234
C210 100p
0.1uC212
1u
C206
LEBB-S14E
LD208
C205
0.1u
47p
C209
R221
100ohm
KB214
KB202
R213 100K
R231
2.2K
100ohm
R223
MICBIAS
VA200
ICVS0505481FR
100ohm
R226 C217
1u
KB213
10K
R207
VBAT
39p
C224
100ohm
R224
C201 220n
LD206
LEBB-S14E
0.1u
C218
100K
R209
KB206
KB205
KB211
100ohm
R222
KB200
C200
LEBB-S14E
LD207
220n
V_MEM
KB210
LEBB-S14E
LD209
R218
100ohm
KB219
KB215
R215
150
39p
C222
KB201 KB203
LD205
LEBB-S14E LEBB-S14E
LD203
100ohm
R220
100ohm
R219
V_MEM
LD200
LEBB-S14E
C223 22n
KB208
TP202
TP204
R233
20K
C215
VBAT
2BYPASS
7
GND
IN+
3
4IN- 9
PGND
VDD 6
5
VO+
8
VO-
_SHUTDOWN
1
39p
U200 TPA6205A1DRBR
VBAT
C207
1u
LEBB-S14E
LD204
VA201
RFU6 G5
D12
RFU7
RFU8 E7
H7 R_CE_
R_CRE
H8
R_LB_
C7
C8 R_UB_
D3 R_WAIT
TEST
E9
VCC D7
E3
VCCQ1
D5
VSS1 F3
VSS2
E12
VSSQ2
D8 WE_
F_RST_
E8
D9 F_VPP
A1 NC1
A14 NC2
C3 NC3
C12 NC4
H3 NC5
H12 NC6
NC7
K1
NC8
K14
F12 OE_
C4 RFU1
C11 RFU2
RFU3
H4
H11 RFU4 RFU5 G10
A_DQ10 G9
G8
A_DQ11 F7
A_DQ12 F6
A_DQ13
A_DQ14 G4
A_DQ15 G3
F9
A_DQ2
A_DQ3 F8
A_DQ4 G7
A_DQ5 G6
A_DQ6 F5
F4
A_DQ7
A_DQ8 F11
A_DQ9 F10
CLK
D6
F_CE_
E11
S71VS064KB0U202
E4
A16 D11
A17
A18 E10
D10
A19
A20 E5
A21 D4
E6 AVD_
A_DQ0 G12
G11
A_DQ1
20KR200
C220
1u
C204
22n
OB4-15L42-C33L
1
2
KB209
GND 4
7S1
6S2
VCC
9
MIC200
FSA2268TUMX
U402
1A
810
1B0
1
1B1
52A 2B0 2
2B1 3
KB207
10KR230
KB217 CLEAR
KB204
R225
100ohm
C202
47p
KB216
R212
10
KB212
10u
C219
Q200
2SC5585
2
3
1
100K
R206
TP207
R208
100K
100ohm
R217
LD201
TP206
LEBB-S14E
47p
C208
100p
R232
100K
C214
4.7
R201
C216
1u
OK
C213
100p
TP208
C221
10
R210
NA
8.2K
LEBB-S14E
LD202
R202
R203 8.2K
R216
1K
R227
2.2K
SPK_N
SPK_P
EAR_N
EAR_P
SPK_P
SPKNA
KBR(0)
PWON
SPK_RCV_P
SPK_RCV_SEL
SPK_RCV_N
KBC(3)
SPK_N
KBC(4)
KBC(2)
KBC(1)
KBC(0)
KBR(4)
KBR(3)
KBR(2)
KBR(1)
KEY_BACKLIGHT
nBLE
CKM
nRDYMEM
RnW
nMOE
nFADV
FDP
nCS3
MICIN
MICIP
SPKPA
SPK_EN
DATA_ADD(7)
DATA_ADD(8)
DATA_ADD(9)
DATA_ADD(10)
DATA_ADD(11)
DATA_ADD(12)
DATA_ADD(13)
DATA_ADD(14)
DATA_ADD(15)
ADD(16)
ADD(17)
ADD(18)
ADD(19)
ADD(20)
ADD(21)
nBHE
nCS0
DATA_ADD(0)
DATA_ADD(1)
DATA_ADD(2)
DATA_ADD(3)
DATA_ADD(4)
DATA_ADD(5)
DATA_ADD(6)
7. CIRCUIT DIAGRAM
LGE Internal Use Only
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Z3X-BOX.COM

- 73 -
1
ID Voltage
11
F
A
C
HIGH 1.8V
R_MIN : 180K -> 61mA
A
2
9
4
C
F
152
CHARGING
E
E
D
1 5 16
D
10 128
D
4
GP(NOVATEK) LOW
6
D
0V
GP(NOVATEK)
LCD CONNECTOR
C
8
BATTERY CONNECTOR
INDICATOR LED SWITCH
VIBRATOR
FOLDER SENSE
E
3
B
6
R_REF : 27K -> 450mA
F
5
(10V,Z,Y5V)
C
(2012)
14
I/O CONNECTOR
13
3 9
E
MAKER
(50V,J,NP0)
B
NA
7
7
2.2K
R352
R377 47
INOUT_A1
INOUT_A2
2
INOUT_A3
3
4INOUT_A4
INOUT_A5
5
6INOUT_A6
INOUT_B1 13
12
INOUT_B2 11
INOUT_B3
INOUT_B4 10
9
INOUT_B5
INOUT_B6 8
FL301
ICVE31186E150R101FR
G1 7 G2 14
1
FB2
100nHL300
R419 0
C301
47p
VBAT
0R358
0R376
VA307
EVLC14S02050
VA300
C313
0.1u
C305
120p
C312
R420
NA
1u
C303
VA308
1u
180K
R317
47p
C316
0
R321
R328
FB1
100K
NAR365
C326
4.7u
2
3
VBAT
CN300
1
R353
NA
FB3
VA302
R319
4.7K
100K
V_IO
R329
VCHG
10K
R326
33u
1000p
C307
C324 56p
V_EXTH
V_IO
C327
C310
0.1u
100K
R324
VA305
VBAT
V_IO
10K
V_BACKUP
V_IO
VA304
R325
R322
0
NA
C314
8
BAT
5
GND
IMIN 6
IREF 7
9PGND
VIN
1
3_CHG
_EN
4
2_PPR
ISL6294U300
22u
2.2K
R331
VBAT
C317
C325
2200p
47R378
NA
R303
NA
R327
C304
R369 47
V_IO
1u
C315
0.1u
8
9
20KR309
13
14
15
16
17
18
19
2
20
21
22
3
4
5
6
7
CN302
1
10
11
12
330
R330
33u
C300
C308
INOUT_B2 12
INOUT_B3 11
10
INOUT_B4
INOUT_B5 9
8
INOUT_B6
VCHG
27p
ICVE31186E150R101FR
FL300
7
G1 14 G2
INOUT_A1
1
2INOUT_A2
3INOUT_A3
INOUT_A4
4
5INOUT_A5
INOUT_A6
6
13
INOUT_B1
HSMICBIAS
V_IO
R316
33K
27p
0.1u
C309
2
Q1_B
6
Q1_C
1
Q1_E
Q2_B
5
Q2_C
3
Q2_E
4
C306
VBAT
V_IO
Q301
R359 NA
R357 NA
VA306
UMX1NTN
Q300
2 56
31 4
47K
R323
22
23
24
R364 0
6
7
8
9
16
25
26
27
28
29
30
17
18
19
20
21
CN301
1
10
11
12
13
14
15
2
3
4
5
VA301
EVLC14S02050
VA303
EM-0781-T5U301
3
NC
2OUT
1VDD 4
VSS
R414
4.7K
27K
R318
VBUS_USB
47R368
NAR356
C311
NA
C302
18p
10K
R302
10u
R354
2.2K
C328
MOTOR_P MOTOR_P
LCD_ID
IND_LED_B
IND_LED_R
LED_B_EN LED_R_EN
LCD_D(2)
LCD_D(1)
LCD_D(0)
LCD_ADS
IND_LED_B
LCD_D(0:7)
VIB_EN
FOLDER
SPK_RCV_P
SPK_RCV_N
IND_LED_R
_LCD_WR
_LCD_CS
LCD_RESET
MLED2
MLED1
VRWLED
LCD_D(7)
LCD_D(6)
LCD_D(5)
LCD_D(4)
LCD_D(3)
CHG_STATUS
CHG_EN
UART_DSR
HSMIC
TMS
TCK
TDI
TDO_ARM
JACK_DETECT
HSOL
USB_DM
USB_DP
RPWON
UART_TX
UART_RX
BATT_TEMP
7. CIRCUIT DIAGRAM
LGE Internal Use Only
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Z3X-BOX.COM

- 74 -
5 9
850/900/1800/1900 RX
1
4
C
ANT_SW1
850/900 TX H
MODE
74
L
ANT_SW2
1
L
A
2
8
E
6
C
3
L
A
7
B
2
L
D
53
D
1800/1900 TX
6
H
10
C419
NA
L408
18nH
26
27
3
4
5
6
7
8
9
11
12
13
14
15
16
17
18
19
2
20
21
22
23
24
25
SC401
1
10
C415
0.5p
C405 1p
L406
V_EXTH
10nH
3pC424
C401
68p
NA
R403
L402
2.2nH
4.7K
R412
27p
C420
ANT401
C410
15p
GND3
8 9GND4
GND5
10 12 GND6
GND7
13 14 GND8 16 GND9
P_GND
21
RSVD_GND
19
20
VAPC
VBATT 17
VCC1A 2 VCC1B 6
U400
SKY77318
1
BS
3
DCS_PCS_INDCS_PCS_OUT
15
EGSM_IN 4 EGSM_OUT
11
18
ENABLE
5GND1
GND2
7
C423 0.1uF
NA
C430
18p
C417
V_EXTH
10
R405
NA
C416
NA
R402
NA
R404
L403
18nH
22K
PT400
R409 47
6.8nH L411
6.8nH L409
ANT400 ANT403
C421
27p100p
C431
C407
0.01u
GND1
5
8GND2
10 GND3
6
GSM1800_1900RX
GSM1800_1900TX 1
4
GSM850_900RX
GSM850_900TX 2
IN
9
7VC_GSM1800_1900TX
VC_GSM850_900TX
3
FL401
LMSP2PAA-575TEMP
C406
0.01u
Y1
Y2
L404
10nH
7
6
O2_2
NC7WV16P6XU401
A1
A2
GND VCC
2
G1
3
G2
5
G3
10
G4
I1
1
I2
4
9
O1_1
O1_2
8
O2_1
C402 2.2p
B9310FL400
L412
NA
C425
R401
0
3p
100p
C422
C426
27p
C413
47p
R407 47
VBAT
680
R411
270K
R410
1.5p
C404
L400
3.3nH
47R408
VDDRF1
15K
R400
180p
C412
SW400
RF-800
ANT
G1 G2
RF
C414
1nH
1.5p
L401
R406 47
C408
10u
NA
C418
ANT402
1.5p
C403
L410
6.8nH
27p
C427
0.01u
ANT_SW2
ANT_SW1
C409
TXLB
TXHB
TX_RAMP
PA_EN
PA_BAND
TEMPSENSE
GSM_RXP
GSM_RXN
PCS_RXN
PCS_RXP
7. CIRCUIT DIAGRAM
LGE Internal Use Only
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Z3X-BOX.COM

- 75 -
9
A
6
B
FPCB to PCB INTERFACE CONNECTOR
3
5
A
1
D
1
BACKUP BATTERY
2
2
LCD to FPCB INTERFACE CONNECTOR INDICATOR LEDS
3 4
E
5
8
D
4
710
C
VBAT
V_BACKUP
LD2
VEXTH
LD1
V_IO
VA2
VBAT
V_BACKUP
VEXTH
8
9
R1
300
25
26
27
28
29
3
30
31
32
33
34
35
4
5
6
7
10
11
12
13
14
15
16
17
18
19
2
20
21
22
23
24
VBAT
CN2
1
VA1
V_IO
28
29
30
17
18
19
20
21
22
23
24
12
13
14
15
2
3
4
5
6
7
8
9
16
25
26
27
CN1
1
10
11
100ohm
R2
BAT1
VSYNC
MODE
SPK_RCV_P
SPK_RCV_N
IND_LED_B
IND_LED_R
MOTOR_P
IND_LED_B
D(0:7)
D(4)
D(5)
D(6)
D(7)
LCD_ID
_LCD_CS
_LCD_WR
MLED
LCD_RESET
MLED1
LCD_ADS
MLED2
MOTOR_P
D(0)
D(1)
D(2)
D(3)
D(0:7)
D(3)
D(4)
D(5)
D(6)
D(7)
LCD_RESET
_LCD_CS
_LCD_WR
LCD_ADS
D(0)
D(1)
D(2)
SPK_RCV_P
SPK_RCV_N
IND_LED_R
LCD_ID
MLED2
MLED1
MLED
7. CIRCUIT DIAGRAM
LGE Internal Use Only
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Z3X-BOX.COM

- 76 -
LGE Internal Use Only
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Z3X-BOX.COM

LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 77 -
8. BGA IC Pin Check
8. BGA IC Pin Check
8.1 DBB (U101: D6591BUZPH)
8.2 ABB (U100: T3031FZPH)
USE
NOT IN USE
Z3X-BOX.COM

- 78 -
8. BGA IC Pin Check
LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
8.3 Memory (U202: S71VS064KB0)
USE
NOT IN USE
Z3X-BOX.COM

- 79 -
9. PCB LAYOUT
LGE Internal Use Only
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Z3X-BOX.COM

- 80 -
9. PCB LAYOUT
LGE Internal Use Only
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
U400 PAM
GSM TX Power
No Service
U402 Analog Switch
No Sound (SPK, Voice)
U200 SPK Amp
No Sound (SPK, Voice)
U300 Charging IC
No Charging
U100 Triton lite(ABB)
No Power On
No Sound
No LED
CN301 FPCB conn.
No Display
No Vibrator
No Sound
No Charging LED
FL400 FEM
GSM Rx Sensitivity
No Service
U101 Locosto (DBB)
No Booting
No Service
No Display
U202 Memory
No Booting
Z3X-BOX.COM

- 81 -
9. PCB LAYOUT
LGE Internal Use Only
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Z3X-BOX.COM

- 82 -
9. PCB LAYOUT
LGE Internal Use Only
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Z3X-BOX.COM