LG KT520 Service Manual page 181

7. CIRCUIT DIAGRAM
1 2 3
A
VBAT
C600
B 4.7u
C604
4.7u
C605
1u
C
VBAT
C612 C613
RTCCLK
24p 24p
SRST_n
SCLK
SDAT
Battery Conn.
2012
R608 Close to Pin 3
Phone ground 1%
route as a differential pair
1/4W 0.025
return path
D
CN600
VBAT
BATT_GND R610 0
2012 R611 route as a differential pair
1%
0.1
1/4W
S2 G2
DCIN_A D2
E D4
R613 47K
D3
DCIN
D1
VBUS
S1 G1
SIA911DJ
Q600
VDDC_2V65 VBAT
VDDD_1V5
R630 0
F
C632
0.1u
VDDE_1V8
C641 C642
DNI 0.1u
G
H
1 2 3
LGE Internal Use Only
4 5 6
VBAT_C
D11 C12
VBAT_A VDD_A
B11
EXTLDO
E12
VBAT_B
F12
VDD_D
A12 D12
VBAT_E VDD_E
A8 A11
VBAT_F VDD_C
B12
VDD_H
M11
VBAT_G
A9
VDD_F
A5 A7
VBAT_C VDD_G
C10 M12
MOD1 VDD_K
J11
VDDLP
C606
1u
K12
XTAL1
K11
XTAL2
J12 B2
32KHZ VBUCK
A2
VDDBUCK
A1
SWBUCK
G10
SIMOFF_N
K2
SRST_N
J3
SCLK
K3
SDAT
H4 B1
BDATA VSSBUCK
G12 D1 C618 0.1u
FGSENSE+ PBIAS
10V
C621
F1
47p SIMVCC
Close to AB
1u C622
U600
Close to ABB
G11
FGSENSE-
J2
SIMRST_N
AB3000 H5
SIMCLK
H1 H2
VBAT_D SIMDAT
E1
CHSENSE+
D4
SCK1 I2S0_CLK
D3
WS1 I2S0_WS
C2
SDI1 I2S0_ULD
F2 C1
CHSENSE- SDO1 I2S0_DLD
E4
SCK2 I2S1_CLK
C3
WS2 I2S1_WS
E2 D2
CHREG SDI2 I2S1_ULD
F4
SDO2 I2S1_DLD
K8
MIC1P
J8
MIC1N
L8
MIC2P
M9
MIC2N
F3 M10
DCIO MIC3P
H8
MIC3N
J1 K9
VBUS MIC4P
L9
MIC4N
G1
TRICKLE
M7
CCO1
K7
CCO2
J7 M2
VDD_ADC1 SPKRP
M3
SPKRN
L6 M4
VDD_ADC23 BEARP
J6
BEARN
L3 K6
VDD_SPKR AUXO1
M6
AUXO2
K5 L10
VDD_BEAR LINEIN1
K10
LINEIN2
M8 L5
VDD_CODEC MIDR
C631 47n
E3 J5
VDD_DIG DEC3
J4
DEC4
M1
VDD_PLL
SWBOOST
A4
BOOST_ISENSE+
F9 B5
VDD_IO BOOST_ISENSE-
C5
V_BOOST
B3
BOOST_SW1
C4
OTP_TEST BOOST_SW2
E8 B4
TEST BOOST_SW3
D10 A3
VREF BOOST_FB+
H3 D5
IREF VSSBOOST
E5
Separate VSS_DIG & VSS_PLL GND
4 5 6
7 8 9
VRADA_2V8
VDDD_1V5
VDDE_1V8
VDIGRAD_1V8
R602 0
R639 0
R603 0
VDDC_2V65
C601 C602 C603
VDDH_CAM_CORE
1u 1u 2.2u
VDDF_2V5
VDDG_2V75
R636 0
R637 0
R605 4.7K
C607 C608 C609 C610 C611
1u 1u 1u 1u 1u
VBAT_C VBAT
1608 120ohm(@100MHz)
FB600
BLM18PG121SN1J Parallel with VCORE
3*3*1.2 0.85A 155mohm 30%
L600 4.7uH
C614 C615 C616
10u 0.1u 10u
Local Ground Plane
Use Multiple Vias
SIMVCC
SIMRST_n
SIMCLK
SIMDAT
Main MIC
MIC1P
MIC1N
MIC2P CCO1
MIC2N
C624
MIC1P
C625
MIC1N
CCO1
CCO2
SPKRP
SPKRN
Speaker Amp.
BEARP
BEARN
EAR_R
EAR_L
MIDR
C633 C634
0.1u 0.1u
U601
C639 47n
R619 1% 10K C3
SPKRN IN-
C640 47n
R620 1% 10K C2
SPKRP IN+
B1
ACC_GP13_SPK_AMP_EN _SHUTDOWN
C1
BYPASS
7 8 9
- 182 -
10 11 12
VBAT
VBAT to WCDMA & GSM PAM, Backlights, Speaker Amp, USB/RMT Switch, and Ext. LDOs
to RF3000, RF3100 analog and WCDMA Power Detector
VRADA_2V8
VDDD_1V5 to AB3000 CODECs/ADC/PLL
VDDE_1V8 to All I/O Supplies and Memory
VDIGRAD_1V8 to RF3000 and RF3100 digital
VDDK_2V75
VDDC_2V65 to Hall Switch, AB3000 BEAR
VDDH_CAM_CORE SS 1.2V
VDDF_2V5 to DB3100 analog
VDDG_2V75 to SD Card and LCD and OJ
VDDK_2V75 to Bluetooth
VBACKUP to AB3000 RTC module
VCORE
VBUCK_FB
VCORE to DB3100 CORE
Close to Main MIC
R612
0
MIC600
0.1u
1
OUT
2
G1
0.1u 3
G2
4
G3
5
PWR
6
G4
SPM0204LE5-QB
VBAT
C630
2.2u
VBAT
R617 1% 39K
U602 FSA2268TUMX
R618 1% 15 10 8
TPA6205A1ZQVR BEARP 1B0 1A SPK_RCV_P
A3 1 7
VDD 1B1 S1
B3 R621 1% 15 2 5
VO+ BEARN 2B0 2A SPK_RCV_N
A1 3 6
VO- 2B1 S2
B2 4 9
GND GND VCC
C646
0.01u
R625 1% 39K
ACC_GP27_AMP_SW_EN
10 11 12
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
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