LG KM710 Service Manual page 113

7. CIRCUIT DIAGRAM
1 2
GND400 GND401 ANT400 ANT401
A
C401 C402
C442 C443
1000p DNI
1000p 1000p
C411
1.5p
C413
1000p
L411
8.2nH
B
G1
KMS-518 A
SW400
C
G2
100nH
L408
C422
56p
C424
15p
C
D
VBAT VCC_SYN
C439
1u
U403
RT9011-MMPQW
1 8
VIN VOUT1
2 7
REGEN
EN1 VOUT2
3 6
EN2 NC2
4
E
NC1
5
9
PGND
1 2
LGE Internal Use Only
3 4 5
FL400
ESHS-C090SR
GND5 GSM18001900_TX
16 11 C412 3p
GND4 GSM900_TX
15 13
L402
GND3
14 4.7nH
GND2 GSM1900_RX2
3p
C414
9 6
GND1 GSM1900_RX1
7 5
GSM1800_RX2
4
GSM1800_RX1
3 C416 3.3p
VC2 GSM900_RX2
10 2
VC1 GSM900_RX1 L404
12 1
3.9nH
C418 3.3p
4.7nH L405
L406
18nH
4.7nH L407
C421 22p
120
R403
R405 R406
51 68
120
R407
L409
C428 82p
8.2nH
C429 C430
1.2p DNI
POUT_GSM
13
GND7
14
VLDO
15
VBAT
VBAT1
16
C433 C434
C432
10u 0.01u 22p VBAT2
17
GND5
18
POUT_XCS
19
L410
C436 82p
1.8nH
C437 C438
1.2p DNI
MM_2V8
C440
4.7u
R411
C_VCCRF 36K
TEMP_SENSE
PT400
R412
22K
47K
C441
GND
22K THERMISTER
4.7u
3 4 5
6 7
C_VCCRF VCC_SYN
C400
0.01u
C403
0.01u
C404
3.9p
C406
3.9p
C405 C408
68p
33nF
C409 C407
22p 0.1u
X400
FA-23H
A1 B9
PCSLNAI XON
B1 C8
PCSLNAIB GNDVCXO_OR
C2 D7
PCSDCSGND VOUTEF2
C1 C9
DCSLNAI VCCVCXO
D1 D8
DCSLNAIB VOUTEF1
D2 D9
DCSG90GND VCCLOGIC2
E1 E7
U401
G90LNAI GNDLOGIC
F1 F7
G90LNAIB CLOGIC1
E2 E9
R2A60167BG
G90G85GND VCCLOGIC1
G1 E8
G85LNAI STROBE
H1 F8
G85LNAIB SYSCLK
F2 F9
G85GND RXTXDATA
G2 G7
GNDLNA_TX1 RXTXEN
H2 G6
TXON TEST1
E3 G9
GNDDMIXIN CTRLEN
J2 G8
DMIXIN CTRLDATA
J1 H9
DMIXINB CTRLCLK
100ohm
R404
C425
22p
100ohm
C423 0.01u
R408
R409
100ohm
C426
0.01u
C427
1000p
PIN_GSM
7
C431
TX_ON
6 33p
VRAMP
5
GND6
U402
4
VREG
RPF09036B
3
BAND_SELECT
2
PIN_XCS
1
- 114 -
8 9
BT_CLK
VRIO
C410
0.01u
R401
U400
47K
L403 1 VCC
_OE
5
2
26MHz
A
R402
4
8.2nH 3
Y
GND
1K
SN74LVC1G125DRLR
0.1u
C417
SLICER_IN
VCC_SYN
0.01u C420 0.01u
C419
VRIO
DIGITALRF_DATA
DIGITALRF_ENABLE
DIGITALRF_RF_CS
DIGITALRF_RF_DATA
DIGITALRF_RF_CLK
SYSCLKEN
C_VCCRF
C_VCCRF
C435
22p
GSM850 only
R410
DNI
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
10
A
SYSCLK
B
C
D