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LGE Internal Use Only
Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
[UG{
OiiP
TP10
TP2
TP3
TP4
TP9
TP8
TP5
TP6
TP7
4.7u
L403
4.7u
L402
L401
4.7u
u2.
2
64
4
C
VREG_LCD_1.8V
C445
1u
VREG_RGB_1.5V
L400
4.7u
2.2u
C442
10u
C441
CM315_12_5PF
X400
32.768KHz
2
1
0.1u
C440
VREG_MSME_1.8V
C438
2.2u
VREG_SYNTH_2.75V
VREG_RF_2.7V
E10
F10
C12
M12
K7
N13
M13
G10
D9
H12
C13
A13
A12
G12
G1
M1
D13
E12
N11
A3
A10
A8
H13
G13
A11
K13
E13
B13
A9
N12
J13
A2
M4
N4
M9
N10
M6
N6
M8
N8
J1
K1
VSW_5V
VREG_5V
VSW_MSMC1
VREG_MSMC1
VSW_MSMC2
VREG_MSMC2
VSW_MSME
VREG_MSME
VSW_PA
VREG_PA
VREG_GP1
VREG_GP2
VREG_GP3
VREG_GP4
VREF_GP5
VREG_GP6
VREG_MMC
VREG_MSMA
VREG_MSME2
VREG_MSMP
VREG_RFRX1
VREG_RFRX2
VREG_RFTX
VREG_RUIM1
VREG_SYNT
VREG_TCXO
VREG_USB
VREG_WLAN
MIC_BIAS
REF_ISET
REG_GND
REF_BYP
TCXO_IN
TCXO_EN
TCXO_OUT
XTAL_IN
XTAL_OUT
SLEEP_CLK
AMUX_OUT
KPD_PWR_N
PON_RESET_N
PS_HOLD
R409
121K
KDS114E
D400
22p
C435
VREG_TCXO_2.85V
51
R406
C431
1n
2.2u
C430
22p
C429
2.2u
C428
1n
C427
2.2u
C425
VREG_MSMC1_1.35V
VREG_MMC_3.0V
200K
R404
C424
1n
VREG_RUIM_3.0V
C420
4.7u
C419
2.2u
2.2u
C418
VREG_MSMA_2.6V
10u
C416
C415
2.2u
VREG_MSMC2_1.25V
VREG_SMPS_2.1V
C412
1n
C411
1u
VREG_MSMP_2.6V
4.7u
C410
4.7u
C408
2.2u
C407
VREG_MOTOR_3.0V
C405
4.7u
C402
33p
VREG_AUX2_2.9V
VREG_RGB_2.6V
VREG_LCD_2.8V
TP403
TP
2.2u
C460
VREG_SENSOR_2.6V
SLEEP_CLK
JTAG_PS_HOLD
TCXO_PM_19.2MHZ
PS_HOLD
AMUX_OUT
PMIC_TCXO
nPON_RST
TCXO_EN
VSNS_MSMC2_1.25V
VSNS_MSME_1.8V
VSNS_MSMC1_1.25V
PM_ON_SW
0.3mm
Place crystal and load caps close to PM7540
1%
Local Ground Plan
Place in PM7540 room at shield edge
0.5mm
0.5mm
These CAPs close to inductors
0.5mm
Route together
TP7
100
R207
100p
C209
33
R210
1n
C212
TG-5010LH_19_2M_75A
X200
19.2MHz
3
2
4
1
VCONT
VCC
GND
OUT
10n
C213
1n
C214
VREG_TCXO_2.85V
VREG_MSMA_2.6V
C215
100p
0.1u
C216
100K
R213
0.1u
C219
NC7SV00P5X_NL
U202
3
2
4
1
5
VCC
GND
TCXO_RTR_19.2MHZ
TCXO_PM_19.2MHZ
RTR_TRK_LO_ADJ
TCXO_EN
USBH_SYSCLK
1.0T
TCXO Circuit
Clesed to TCXO
TP2
TP
TP10
TP4
TP6
TP5
TP8
TP9