LG KP500 - Page 102

LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
5. Trouble shooting
- 103 -
5.15.4 Checking Transceiver Output Signals
6
06
R
2
G
N
D1
GN
D
2
4
1
HO
T
1
HOT2
3
01
2
6MHz
X
6
0
0 T
S
X-
3
2
25
G
n022
1
4
6
C
V
RF
_
1
V
5
046
C
n7
4
246C
u1
.
0
VRF_2 V
8
5
V
RF_1V5
01
8
0
6
R
028
7
0
6R
V
R
F
_
2
V
85
V
R
F_
2V8
5
4
3
6
C
u
1.0
n02
2
9
3
6
C
9
1
5V
1
X
R
DDV
02
8
V
2XRD
D
V
5V
1
X
T
DD
V
53
8
3
8V
2
XT
D
DV
7
1
8V
2
OCV
D
DV
8V
2
O
X
DD
V
5
1
X
O
1
1
1
2
X
O
X
3
0
R
X
1
X
2
7
R
X
2
R
X
2
X
2
8
R
X
3
2
4
2
5
R
X
3
X
R
X
4
2
2
2
3
R
X
4
X
6
3
1
X
T
73
2
XT
43
SAIBV
CR_O
C
V
81
3
1
V
D
D
B
I
AS
2
V
8
8
V
D
D
D
I
G
1
V
5
V
D
D
D
I
G
2
V
8
5
2
1
V
D
D
L
N
A1
V
5
8
V
2X
IM
DDV
93
AX
2
B
3
4
B
X
C
L
K
7
6
D
A
61
N
E
F
E
1
3
2
2EF
33
41
1
SYSF
1
0
F
S
Y
S
2
F
S
Y
S
3
9
3
1
1
D
N
G
G
N
D
2
2
6
0
4
3DNG
4DNG
1
4
2
9
R
X
1
PMB6272
U601
EUSY0274801
A
1
LBAND
_
PAM_
I
N
HBAND
_
PAM
_
I
N
TP1(LBNAD_PAM_IN)
TP2(HBNAD_PAM_IN)
MODE Transceiver Output
GSMK Fixed
8PSK Ramp Burst Control
Figure 20. Transceiver Output Circuit
Checking Points
Figure 21. Transceiver Output
Table 3. Transceiver Output Operation
TP1(LBNAD_PAM_IN)
TP2(HBNAD_PAM_IN)