LG KP500 Service Manual page 97
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- User manual (298 pages) ,
- User manual (237 pages) ,
- User manual (158 pages)
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5. Trouble shooting
5.14.3 Checking Mobile SW & FEM
RF
6 C
0 0
6 R
9 0
GND600
GND601
D
I N
0
6 C
1 0
6 R
0 1
0
D
I N
6 R
1 1
0
6 L
1 0
2 1
H n
6 C
9 0
D
I N
Checking Points
TP5 ~ 8
FL600
LGE Internal Use Only
Mobile SW & FEM Circuit Diagram
6 C
2 0
6 C
u 1
3
TP1
TP2
SW600
6 C
6 0
6 L
3 0
7 1
2 G
A
T N
F R
1 G
2
2 .
H n
8 1
p 0
Figure 8. Mobile SW & FEM Circuit
TP4_C605 (FE2)
TP3_C604 (FE1)
TP2
Figure 9. Mobile SW & FEM
EGSM/GSM850
FE1
OFF
FE2
OFF
Table 2. FEM RX Control Logic
TP4
VRF_2V85
TP3
3 0
p 9
6 C
4 0
6 C
5 0
4
p 7
4
p 7
FL600
DGM1110M014
SFAY0011101
DCS/PCS
ON
OFF
Copyright © 2008 LG Electronics. Inc. All right reserved.
- 98 -
V
1 C
V
2 C
P
N I
4 1
P
N I
3 1
G
S
8 M
0 5
E _
G
S
M
X T
L
H
D
S C
P _
S C
X T
H
H
F
1 E
F
2 E
G
S
8 M
0 5
E _
G
S
M
X R
L
L
D
S C
P _
S C
X R
H
L
U600
GND25
27
GND24
28
GND23
29
GND22
30
GND21
31
GND20
32
GND19
33
GND18
34
GND17
35
GND16
36
6 L
4 0
GSM_OUT
9
1
H n
GND5
10
6 C
1 1
6 C
2 1
GND4
11
RSVD2
D
I N
D
I N
12
GND3
13
GND2
14
GND1
15
6 C
4 1
TP1
Only for training and service purposes
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Troubleshooting
