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Copyright © 2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
7. CIRCUIT DIAGRAM
10u
C519
10u
C517
10u
C508
10u
C509
10u
C511
45
5
C
p2
2
R543
100K
u2
2
23
5
C
u2
2
43
5
C
u2
2
63
5
C
DNI
R536
TP509
32.768KHz
X501
EXXY0018701
FC-135
2
1
100K
PT501
TP510
R544
0
DNI
R537
10K
R529
K0
01
93
5
R
DNI
R521
100K
R542
TP511
+2.2V_XOADC_REF
D500
200K
R526
DNI
C521
K0
01
83
5
R
EQFN0005601
KTK5132E
Q500
D
G
S
BAT500
311HR-VG1
SMZY0023501
D501
100p
C524
4.7u
C549
VBAT
U500
EUSY0342202
PM8028
7
T
5
T
2
T
7
B
0
1
J
0
1
G
1
K
8
A
1
1
T
5
A
1
D
1
G
0
1
C
1
1
D
1
1
P
1
1
G
1
1
L
H2
M10
N8
P10
R11
H11
H10
B1
C1
K2
J2
F1
B8
H1
D2
J1
E1
B5
B10
A3
R10
A4
E2
G2
E10
C11
L10
N11
F10
F11
K10
K11
M7
N6
M8
D10
N7
R9
N5
M6
N4
M5
M4
L4
J4
K4
H4
H8
A9
D8
A11
A10
B9
E8
L8
J8
E4
R2
E5
N1
D5
G4
D6
E7
D7
T9
T10
T4
T3
R7
R8
R6
R5
F8
R1
G8
A7
A6
F4
B6
D4
C2
B2
B4
B3
A1
A2
E6
F2
R3
T1
R4
P2
P1
M2
M1
N2
L2
L1
6
K
6
G
5
G
5
J
8
T
6
T
0
1
N
1
1
B
1
1
M
1
1
E
1
1
J
8
K
7
K
7
J
6
J
7
H
6
H
5
H
7
G
5
K
0
_
D
N
G
1
_
D
N
G
2
_
D
N
G
3
_
D
N
G
4
_
D
N
G
5
_
D
N
G
6
_
D
N
G
7
_
D
N
G
8
_
D
N
G
1
S
_
D
N
G
2
S
_
D
N
G
3
S
_
D
N
G
4
S
_
D
N
G
P
C
N
_
D
N
G
L
_
R
K
P
S
_
D
N
G
R
_
R
K
P
S
_
D
N
G
O
X
_
D
N
G
C
D
A
O
X
_
D
N
G
F
U
B
O
X
_
D
N
G
D
N
G
_
F
E
R
OVP_CLAMP
OVP_SNS
OVP_CTL
VCHG_0
VCHG_1
VPH_PWR_0
VPH_PWR_1
BAT_FET_N
VREF_THERM
VBAT
VCOIN
XOADC_REF
XTAL_19M_IN
XTAL_19M_OUT
XO_OUT_A0_EN
XO_OUT_A0
XO_OUT_A1_EN
XO_OUT_A1
XO_OUT_D0
XO_OUT_D1_EN/PA_ON
XO_OUT_D1
XTAL_32K_IN
XTAL_32K_OUT
SLEEP_CLK0
LED_ATC
VIB_DRV_N
SPKR_IN_LM
SPKR_IN_LP
SPKR_IN_RM
SPKR_IN_RP
SPKR_OUT_LM
SPKR_OUT_LP
SPKR_OUT_RM
SPKR_OUT_RP
HSED_BIAS0
HSED_BIAS1
HSED_BIAS2
NFC_EXT_EN
RESIN_N
KPD_PWR_N
OPT_1
PS_HOLD
PON_RESET_N
SSBI
PM_INT_N
PA_ON1
PA_ON2
PA_ON3
PA_ON4
PA_ON5
VOUT_PA_CTL
GPIO_01/SLEEP_CLK1
GPIO_02/MP3_CLK
GPIO_03/EXT_SMPS_EN
GPIO_04/PWM_OUT
MPP_01/UIM_M_DATA
MPP_02/UIM_DATA
MPP_03/UIM_M_CLK
MPP_04/UIM_CLK
MPP_05/UIM_M_RST
MPP_06/UIM_RST
MPP_07/BATT_THERM
MPP_08/VREF_OUT/CHG2_DET/BATT_ID
MPP_09/XO_THERM
MPP_10/PA_THERM
MPP_11/CBLPWR0_N
MPP_12/CBLPWR1_N
VSW_S1
VREG_S1
VSW_S2
VREG_S2
VSW_S3
VREG_S3
VSW_S4
VREG_S4
VREG_L1
VREG_L2
VREG_L3
VREG_L4
VREG_L5
VREG_L6
VREG_L7
VREG_L8
VREG_L9
VREG_L10
VREG_L11
VREG_L12
VREG_L13
VREG_L14
VREG_L15
VREG_L16
VREG_L17
VREG_L18
VREG_L19
NCP_CTC1
NCP_CTC2
NCP_FB
VREG_NCP
REF_BYP
1
S
_
D
D
V
2
S
_
D
D
V
3
S
_
D
D
V
4
S
_
D
D
V
S
P
M
S
_
D
D
V
3
1
L
_
1
1
L
_
1
L
_
D
D
V
7
1
L
_
6
1
L
_
0
1
L
_
8
L
_
2
L
_
D
D
V
7
L
_
5
L
_
3
L
_
D
D
V
P
C
N
_
4
L
_
D
D
V
2
1
L
_
6
L
_
D
D
V
5
1
L
_
4
1
L
_
9
L
_
D
D
V
8
1
L
_
D
D
V
9
1
L
_
D
D
V
O
I
_
M
S
M
_
D
D
V
V
R
D
_
R
K
P
S
_
D
D
V
L
_
R
K
P
S
_
D
D
V
R
_
R
K
P
S
_
D
D
V
VBAT
10u
C518
10u
C516
+2.2V_XOADC_REF
u2
2
03
5
C
19.2MHz
DSX321G-19.2M
X500
EXXY0025101
2
1
3
4
DNI
C522
VDD_MDM_MSME
DNI
C523
TP501
DNI
C528
DNI
C527
100K
PT500
+2.2V_XOADC_REF
4.7u
C548
TP505
DNI
C537
ZD500
2.2u
C551
0.1u
C550
+2.05V_MDM_A2
4.7u
C538
100K
R504
+2.2V_XOADC_REF
0.1u
C525
1n
C526
+2.85V_VDD_RF_SW
4.7u
C544
+3.0V_USIM
4.7u
C543
+3.0V_MDM_USB
2.2u
C547
+1.2V_MDM_P4
4.7u
C540
2.2u
C545
2.2u
C546
+1.1V_MDM_MPLL
4.7u
C542
+2.85V_MDM_SDCC1
4.7u
C541
+1.8V_MDM_P5
VBAT
10u
C507
DNI
R505
2.2u
C501
VBAT
0.1u
C502
0.1u
C503
0.1u
C504
1u
C513
0.1u
C505
0.1u
C506
VBAT
VDD_MDM_MSME
VDD_MDM_MSME
0.1u
C500
4.7u
L500
p0
01
13
5
C
47u
C553
VDD_MDM_MSMC
+1.3V_MDM_RF1
4.7u
C539
4.7u
L501
4.7u
L502
VDD_MDM_MSME
4.7u
L503
+2.2V_MDM_RF2
p0
01
92
5
C
p0
01
33
5
C
p0
01
53
5
C
Q501
EQFN0005601
KTK5132E
D
G
S
+2.2V_XOADC_REF
33n
C552
K0
51
13
5
R
51K
R530
VDD_MDM_MSME
AWS_ON
GSM_L_PAM_ON
GSM_H_PAM_ON
PS_HOLD
TCXO_EN
PMIC_SSBI
PMIC_MDM_IRQ/
MDM_TCXO
MDM_SLEEP_CLK
USIM_MDM_CLK
USIM_MDM_DATA
USIM_MDM_RESET/
PON_RESET/
JTAG_PS_HOLD
MDM_RF_TCXO
PCB_THM_ADC
PCB_THM_ADC
USIM_CLK
USIM_RESET/
USIM_DATA
MDM_PWRON_N
MDM_PWRON_N
VBACK_UP
VBACK_UP
MDM_PWRON_1.8V
MDM_RESET_1.8V
REMOTE_PWR_ON
HARD_MDM_RESET
HARD_MDM_RESET
W900_ON
PCB_REV_ADC
PCB_REV_ADC
USIM_DETECT
100K
H/W Rev ADC
100K
100K
100K
100K
100K
Rev.
A
R543
ADC_Volt
R542
B
C
D
E
F
1.1
1.0
12K
19.1K
27K
36K
47K
75K
100K
-
-
0.24V
0.35V
0.46V
0.58V
0.70V
0.94V
1.1V
100K
100K
MODEM POWER ON
Backup Battery
PM8028
USIM LEVEL TRASLATOR
S1&S2 sense point near MDM node
+2.6V,50mA
+2.8V,50mA
MODEM RESET (For LOCK-UP)
S3 sense point near branch of MDM and DDR
Temp Check
As close as possible to 19.2MHz crystal.