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4. Trouble Shooting
4.1.2.2 Power Amplifier Module (RPF09036B)
Select the RX / TX path and amplifier the power.
]
Part Description
Front End Module Switch Control
C431 : VRAMP
C427 : BAND_SELECT
C425 : TX_ON
C422 : Vc_DCSPCS_Tx
C424 : Vc_EGSMGSM850_Tx
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
<Fig.18> PAM Circuit Diagram
100ohm
R409
3.9p
C406
R406
68
100ohm
R404
FA-23H
X400
12
3
4
100nH
26MHz
L408
R402
1K
19
POUT_XCS
TX_ON
6
VBAT1
16
17
VBAT2
15
VLDO
VRAMP
5
VREG
3
PGND20
44
PGND21
45
PGND22
46
47
PGND23
PGND24
48
PGND25
49
PGND3
27
28
PGND4
PGND5
29
30
PGND6
31
PGND7
PGND8
32
33
PGND9
PIN_GSM
7
PIN_XCS
1
13
POUT_GSM
GND7
14
8
GND8
GND9
10
NC
9
PGND1
25
PGND10
34
35
PGND11
PGND12
36
PGND13
37
38
PGND14
PGND15
39
40
PGND16
41
PGND17
PGND18
42
43
PGND19
26
PGND2
2
BAND_SELECT
12
COUPLER_OUT_GSM
20
COUPLER_OUT_XCS
24
GND1
GND10
11
GND2
23
22
GND3
GND4
21
GND5
18
4
GND6
C411
U402
RPF09036B
1.5p
68p
C408
VRIO
120
R407
C424
15p
0.1u
C407
C432
10u
C435
22p
ANT400
3
GND
VCC
5
Y
4
1
_OE
L404
3.9nH
U400
SN74LVC1G125DRLR
A
2
C416
3.3p
1000p
C401
C421
22p
3p
C414
1
2
GSM900_RX2
13
GSM900_TX
VC1
12
10
VC2
C_VCCRF
ANT
8
7
GND1
9
GND2
GND3
14
GND4
15
16
GND5 GSM18001900_TX
11
3
GSM1800_RX1
GSM1800_RX2
4
5
GSM1900_RX1
GSM1900_RX2
6
GSM900_RX1
FL400
ESHS-C090SR
C430
A
C
G1
G2
DNI
VCC_SYN
KMS-518
SW400
1.2p
C429
C400
0.01u
C434
22p
0.01u
VRIO
C423
51
R405
C418
3.3p
ANT401
R403
120
4.7nH L405
DNI
C413
1000p
C402
C404
C417
3.9p
0.1u
8.2nH
L411
C410
0.01u
L410
1.8nH
L407
82p
C436
4.7nH
C405
33nF
C433
0.01u
C412
3p
0.01u
C403
8.2nH
L409
L402
4.7nH
8.2nH
L403
C431
33p
C419
0.01u
82p
C428
J4
J5
VCCTX2
J6
VCCTXVCO
VCCVCXO
C9
VCCVCXOR
A8
VCXTCXO
B8
D8
VOUTEF1
D7
VOUTEF2
B9
XON
XOP
A9
TXBAND
G4
TXMODE
TXON
H2
TXOUTD
J8
J7
TXOUTG
VBAT_IN
H8
VCCAD
A6
B6
VCCBB
VCCFEMC
J3
VCCLNA
A2
VCCLOGIC1
E9
D9
VCCLOGIC2
B3
VCCMIX
A3
VCCRFLO
A7
VCCRFSYN
VCCRFVCO
A5
VCCTX1
C8
IOUTB_IINB
A4
IOUT_IIN
B4
H4
LDO_CONT
PCSDCSGND
C2
B2
PCSGND
A1
PCSLNAI
B1
PCSLNAIB
B5
QOUTB_QINB
QOUT_QIN
C4
F9
RXTXDATA
G7
RXTXEN
E8
STROBE
SYSCLK
F8
J9
SYSCLKEN
G6
TEST1
F3
G85LNAI
G85LNAIB
H1
G90G85GND
E2
G90LNAI
E1
G90LNAIB
F1
C6
GNDBBAD
GNDDMIXIN
E3
G2
GNDLNA_TX1
E7
GNDLOGIC
D3
GNDMIX
GNDRFLO
C3
C7
GNDRFSYN
GNDRFVCO
C5
G5
GNDTX2
GNDTXVCOD
H6
H7
GNDTXVCOD_B
GNDVCXO_OR
CAFC
B7
F7
CLOGIC1
H9
CTRLCLK
G8
CTRLDATA
CTRLEN
G9
D2
DCSG90GND
DCSLNAI
C1
DCSLNAIB
D1
J2
DMIXIN
J1
DMIXINB
EAMPIB
H5
H3
FEMC1
FEMC2
G3
G85GND
F2
G1
DNI
U401
R2A60167BG
VBAT
C438
R408
100ohm
C_VCCRF
C422
56p
18nH
L406
C425
C_VCCRF
VCC_SYN
22p
R401
47K
1.2p
C437
C409
22p
0.01u
C426
0.01u
C420
1000p
C427
BT_CLK
SLICER_IN
SYSCLK
DIGITALRF_RF_DATA
DIGITALRF_RF_CS
DIGITALRF_RF_CLK
DIGITALRF_DATA
DIGITALRF_ENABLE
SYSCLKEN
U401
U402
C422
C424
C425
C427
C431
Lo w
High
EDGE
Lo w
High
GMSK
DCS1800 /
PCS1900
High
High
EDGE
High
High
GMSK
GSM850
Vband
Vtxon
Mode
Appli cation
Содержание KM710
Страница 1: ...Date May 2008 Issue 1 0 Service Manual Model KM710c Service Manual KM710c Internal Use Only ...
Страница 123: ... 124 LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes ...
Страница 129: ... 130 LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes ...
Страница 139: ... 140 LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes ...
Страница 173: ...Note ...
Страница 174: ...Note ...