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4. TROUBLE SHOOTING
4.17.2 Checking RF Tx Level
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
GSM
PCS
DCS
PCN_RX2
14
PCS_RX1
15
PCS_RX2
VDD
7
21
WCDMA_2100
CTRL3
16
EGSM_RX1
EGSM_RX2
17
GND1
2
GND2
3
8
GND3
10
GND4
GND5
20
GND6
22
GND7
23
GND8
24
GSM850_EGSM_TX
11
GSM850_RX1
18
19
GSM850_RX2
9
PCN_PCS_TX
12
PCN_RX1
13
DGM112M02
FL100
1
ANT
4
CTRL1
5
CTRL2
6
100p
C135
L108
18nH
L111
L501
8.2nH
NA
C114
10n
L107
5.6nH
C139
L502
82p
1.5nH
47nH
L109
L110
18nH
C134
56p
6.8nH
L103
10n
C111
10n
C110
RF
KMS-507
SW101
ANT
G1
G2
C113
0.1u
4.7nH
L106
C118
1p
100p
C100
5.6nH
L104
6.8nH
L100
L101
18nH
RSVD3
12
1
TX_EN
VAPC
6
5
VBATT
31
PGND15
PGND16
32
PGND17
33
34
PGND18
35
PGND19
PGND2
18
PGND20
36
19
PGND3
20
PGND4
PGND5
21
22
PGND6
23
PGND7
PGND8
24
PGND9
25
RSVD1
4
RSVD2
8
3
BS
2
DCS_PCS_IN
DCS_PCS_OUT
16
10
GND1
11
GND2
GND3
13
14
GND4
GND5
15
GSM_IN
7
GSM_OUT
9
PGND1
17
26
PGND10
27
PGND11
28
PGND12
PGND13
29
PGND14
30
U101
SKY77329
C145
1000p
22nH
L105
22u
C128
tcc_16085h_9_r
C146
1000p
R600
0
GSM_PA_BAND
[Fig. 4.17] Schematic of the GSM Tx Block
[Fig. 4.18] Test Point of GSM Tx Block
TP1
TP2
TP3
Содержание KF700
Страница 1: ...Service Manual Model KF700 Service Manual KF700 Date May 2008 Issue 1 1 Internal Use Only ...
Страница 157: ... 158 LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes ...
Страница 167: ... 168 LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes ...
Страница 193: ...Note ...
Страница 194: ...Note ...