LG GW620 - Page 135

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LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
601Cu2.2
071CFu01
u
2
.
2901C
691CFu2.2
FU1812C
F
u
2.2112C
C228
22pF
22pF
C221
VREG_PROX_2.8V
902CFu2.2
VREG_CAM_AF_2.8V
VREG_5M_DVDD_1.8V
Fu2.283C Fu2.273C
VREG_TOUCH_2.8V
u1141C
4.7u
L39
L40
4.7u
4.7u
L14
402Cu2.2
u2.2121C
TP16
VREG_MMC_3.0V
VREG_COMPASS_3.0V
4.7uC105
PRSB6.8C
D16
200KohmsR176
D18
KDS114E
CM315_12_5PF
EXXY0024301
X4
102CFu2.2 271CFu2.2
3
7
1CF
u2.
2
612CFU1
Fu2.2171C
51ohmsR118
0.1UFC88
121KohmsR177
VREG_AUX2_2.85V
VREG_LCD_2.8V
VREG_LCD_1.8V
VREG_TCXO_2.85V
VREG_RUIM_3.0V
VREG_RF_2.7V
VREG_MSMP_2.7V
VREG_MSMA_2.6V
161CFu01
VREG_MSMC2_1.2V
VREG_MSMC1_1.2V
Fu100.0113C
123CFu100.0 213CFu100.0
F
u
1
0
0
.
090
3
C
701C
F
u7.
4
Fu7.4401C
4.7u
L41
4.7uC110
C310 0.001uF
0.1UFC60
PM7540
U33
9J
8J 7J 6J 5J 9H 8H 7H 6H 5
H
9G 8G 7G 6G
5G
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
2
G
21D
7D
8B
01
M
6D
9B
21J
31F
21F
21K
7N 9N
01B
ANA_DDV E_1C_DDV AP
_2
C_
D
DV
2P
G
_
D
DV
6PG_DDV 2EMSM_
D
DV
P
MSM_DDV
1FR
_
D
DV
2FR_DDV
MIUR_DDV
RKPS_L
_
D
DV
RKPS_
R
_
D
DV
OXCT_DDV
NALW_
D
DV
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
11
D
N
G
2
1
D
N
G
31DNG 41DNG 51
D
N
G
6
1
D
N
G
71DNG 81DNG 9
1
D
N
G
0
2
D
N
G
12DNG 22DNG 3
2
D
N
G
4
2
D
N
G
52DNG
VREG_COMPASS_2.7V
VREG_USB_1.8V
2.2uFC199
C200 2.2uF
VREG_MSME_1.8V
VREG_SMPS_2.1V
C158
33pF
TCXO_PM_19.2MHz
SLEEP_CLK
JTAG_PS_HOLD
AMUX_OUT
TCXO_EN
VSNS_MSMC2_1.2V
VSNS_MSMC1_1.2V
VSNS_MSME_1.8V
nPON_RST
KPD_PWR_N
PS_HOLD
PMIC_TCXO
Place in PM7540 room at shield edge
these CAPs close to inductors
Place crystal and load caps close to PM7540
0.1UF
C103
33ohms
R51
R22
100Kohms
C244
100pF
100pFC243
VREG_TCXO_2.85V
C325
0.001uF
C41
0.01uF
smho09
4
R
VREG_USB_1.8V
R65 100ohms
0.1UF
C102
TC7SH04FS
U5
2
41
5
VCC
GND
19.2MHz
DSA321SCA X1
21
34
VDD
OUT
VCONTGND
C323 0.001uF
0.001uFC324
USBH_REF_CLK
TCXO_PM_19.2MHz
RTR_TRK_LO_ADJ
TCXO_RTR_19.2MHZ
Near TCXO
TCXO
TP8
TP2
TP3
TP4
TP6
TP5
TP2
TP9