LG LG-P350 - Page 115

4. TROUBLE SHOOTING
- 115 -
Copyright © 2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
VREG_HPVDD_1.8V
HS_MIC_BIAS
EUSY0407201
U500
5
3 2
4 1
VOUTVIN
GNDSTBY
DNGP
USB_3.3V
HS_MIC_BIAS_TEMP
1u
C571
C502
1n
+VPWR
4.7u
L504
L503
4.7u
4.7u
L502
K
05
1
2
0
5R
VREG_MSMP_2.6V
2.2u C535
VREG_MSME_1.8V
R504
47K
VREG_LCD_1.8V
C546
1u
C507 DNI
L501
4.7u
C528
4.7u
DNI C536
K1
305R
DNIC508
C516
1u
+VPWR
CM315_12_5PF
X500
32.768KHz
2 1
0.1uC549
VREG_MSME_1.8V
10u
C519
C540
2.2u
VREG_TOUCH_3.0V
VREG_RF_2.7V
M
_S
N
SI
U501
EUSY0342201
PM7540
9J 8J 7J 6J 5J 9H 8H 7
H
6H 5H 9G 8
G
7G 6G 5G 9F 8F 7F 6F 5F 9E 8E 7E 6E 5E
H1
E10F1
F10E1
C12N2
B1
M12B2
K7
A5
N13A4
M13B5
B4
G10A7
D9A6
H12B7
B6
C13
A13D10
A12K10
H10
G12J10
G1
M1K4
D13J4
E12H4
N11M2
A3L2
A10H2
A8
H13K2
G13J2
A11G4
K13F4
E13D5
B13B3
A9M5
N12N3
J13N1
A2M3
K6
M4K5
N4K9
M9K8
N10M11
M6L12
N6A1
M8D4
N8B12
J1D8
K1N5
M7
2G
21D
7D
8B
01M
6D 9B
21J 31F 2
1F
21K
7N
9N
0
1B
31L 1
1B 2F 4E
2C 1C 1D 1L 2D 2E
GHCV
N_LTC_
G
H
C
S
UBV
_BSU
N_LTC_BSU
P_SNSI
M_SNSI
N
_
TE
F
_
TAB
TABV
NIOCV
P
UK
CAB_V
ANA_DDV
E_1C_DDV AP_
2
C_
D
DV
2PG_DDV 6PG_DDV 2EMSM_DDV
PMSM
_
D
DV
1FR_DDV 2FR_DDV
MIUR
_
D
DV
RKPS
_
L_
D
DV
RKPS
_
R_
D
DV
OX
CT_
D
DV
NALW_DDV
MPP_1
MPP_2 VSW_5V
MPP_3 VREG_5V
MPP_4 VSW_MSMC1
MPP_5 VREG_MSMC1
MPP_6 VSW_MSMC2
MPP_7 VREG_MSMC2
MPP_8 VSW_MSME
MPP_9 VREG_MSME
MPP_10 VSW_PA
MPP_11 VREG_PA
MPP_12
MPP_13 VREG_GP1
MPP_14 VREG_GP2
MPP_15 VREG_GP3
MPP_16 VREG_GP4
MPP_17 VREF_GP5
MPP_18 VREG_GP6
MPP_19 VREG_MMC
MPP_20 VREG_MSMA
MPP_21 VREG_MSME2
MPP_22 VREG_MSMP
VREG_RFRX1
USB_ID VREG_RFRX2
USB_D_P VREG_RFTX
USB_D_M VREG_RUIM1
USB_OE_N VREG_SYNT
USB_DAT VREG_TCXO
USB_SE0 VREG_USB
VREG_WLAN
SBST MIC_BIAS
SBCK
SBDT_SSBI REF_ISET
MSM_INT_N REG_GND
REF_BYP
SPKR_IN_L_M
SPKR_IN_L_P TCXO_IN
SPKR_OUT_L_M TCXO_EN
SPKR_OUT_L_P TCXO_OUT
SPKR_IN_R_P
SPKR_IN_R_M XTAL_IN
SPKR_OUT_R_P XTAL_OUT
SPKR_OUT_R_M
SLEEP_CLK
VIDEO_IN AMUX_OUT
VIDEO_OUT
VIB_DRV_N KPD_PWR_N
KPD_DRV_N PON_RESET_N
LCD_DRV_N PS_HOLD
FLSH_DRV_N
1DNG 2
D
N
G
3
D
N
G
4DNG 5DNG 6
D
N
G
7
D
N
G
8DNG 9
D
N
G
0
1
D
N
G
1
1DN
G
2
1
D
N
G
3
1
D
N
G
4
1
D
N
G
5
1DNG
61DNG 7
1
D
N
G
8
1
D
N
G
9
1DNG
0
2
D
N
G
1
2
D
N
G
2
2DN
G
3
2
D
N
G
4
2
D
N
G
52DNG
121K
R509
D501
0.1uC514
1nC517
22pC515
VREG_TCXO_2.85V
C513 0.1u
C512 0.1u
10
5
R
10K
0.1u
C534
51
R510
1n
C524
2.2u
C537
C568
33p
2.2u
C539
C521
1n
C544
2.2u
VBATT
VREG_MSMC1_1.25V
VCHG_VBUS
R515
200K
1n
C523
VREG_MSMP_2.6V
1nC518
0.1uC511
VREG_RUIM_3.0V
2.2u
C509
C526
4.7u
C547
2.2u
C538
2.2u
0.1uC510
VREG_MSMA_2.6V
4.7u
C527
1u
C548
VREG_MSMC2_1.25V
VREG_SMPS_2.1V
C522
1n
1u
C545
10u
C520
VREG_MSMP_2.6V
4.7u
C542
0.1uC506
R500
4.7
22u
C525
C543
2.2u
VREG_MMC_3.0V
TP502
0.1uC505
4.7u
C541
0.1uC504
C503 0.1u
C500 22p
C501 0.1u
VREG_AUX2_2.9V
VREG_MOTION_3.0V
VREG_LCD_2.8V
C570
33p
C566
1u
TP501
035R
K
00
3
R505
1K
D500
+VPWR
L500
2.2u
+VPWR_AUDIO
10uC530
1n
C529
USIM_CLK
USIM_DATA
KEY_LED_DRV_N
SLEEP_CLK
REMOTE_PWR_ON
TCXO_PM_19.2MHZ
PS_HOLD
PM_INT_N
GSM_PA_DAC_REF
AMUX_OUT
PMIC_TCXO
TCXO_EN
PMIC_SSBI
PM_ON_SW
JTAG_PS_HOLD
PU_KCABV
USB_LDO_EN
USB_LDO_EN
PCB_REVISION
PCB_REVISION
N_
L
TC_GH
C
N_TEF_TTAB
P_SNSI
VBAT_TEMP
VSNS_MSME_1.8V
VSNS_MSMC2_1.25V
nPON_RST
VSNS_MSMC1_1.25V
VBAT_SENSE
USIM_RST
MSM_USIM_CLK
MSM_USIM_RST
MSM_USIM_DATA
R
WPV
+
1.30V
close to MSM
USB 3.3V LDO
150K
150K
150K
ADC
150K
TEST&E
150K
0.5mm
R2
2.13V
10K
68K
47K
150K
150K
Place crystal and load caps close to PM7540
REV
1.93V
C&H
B&G
1%
Local Ground Plan
PM7540
Place in PM7540 room at shield edge
A&F
Rev.1.1
150K
150K
PCB Revision Check ADC
Route together
0.16V
Rev.1.0
D&I
0.6mm
Rev.1.2 680K
0.81V
0.6mm
These CAPs close to inductors
100K
1.73V
0.62V
300K
R1
0.6mm
1.04V
430K
Route together
Place close to PM7540 pins
PMIC
1608
close to each other
mm5.0 9N ,7N
0.3mm
0.3mm
C531
100u
C532
10n
VCHG_VBUS
VBATT
Q500 NUS5530MN
EQFP0008601
5
64
73
82
91
10
DRAIN_B
NC1 COLLECTOR_B
COLLECTOR EMITTER
SOURCE BASE
DRAIN NC2
GATE
1.0
605R
CHG_CTL_N
BATT_FET_N
ISNS_P
+VPWR
2mm
1608
Charging IC
10V
2mm
1%
ISNS_M
MAX14528
U503
EUSY0374601
9 6
53
4
82
71
IN1 OUT1
IN2 OUT2
IC1
OVLO IC2
DNG DN
GP
22p
C561 C562
1u
SC500
1
CN501
11
10
9
5
4
3
2
1
8
7
6
ZD502
VCHG_VBUS
22p
C564
FL500
IN OUT
GND1 GND2
USB_ID
USB_DM
USB_DP
OVP
change circuit at REV B
MicroUSB
2mm
TP1
TP2
TP3
TP4