LG KP500 Service Manual page 102

5.15.4 Checking Transceiver Output Signals
TP1(LBNAD_PAM_IN)
LBAND_PAM_IN
HBAND_PAM_IN
TP2(HBNAD_PAM_IN)
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Only for training and service purposes
F
3 3
V
4 3
D V
5 3
T
6 3
T
7 3
D V
8 3
D V
9 3
6 R 6 0
6 C 9 3
G
0 4
0 1
2 2 n 0
G
1 4
VRF_1V5
VRF_2V85
6 R 8 0
0 1
6 C 1 4 6 C 2 4
2 2 n 0 . 0 u 1
Figure 20. Transceiver Output Circuit
Checking Points
Figure 21. Transceiver Output
MODE Transceiver Output
GSMK Fixed
8PSK Ramp Burst Control
Table 3. Transceiver Output Operation
2 E
I B S A
T D 1 X 5 V D V D R 2 X
U601
1 X D V D R 1 X
PMB6272
2 X C V O R _
EUSY0274801
T D 2 X 8 V D V D C V 2 O
D I M 2 X 8 V
N 3 D D V D X 2 O
F Y S
N 4 D G N
X600 TSX- 3225
4
GND2
1 HOT1
- 103 -
5. Trouble shooting
VRF_1V5
6 C 4 3
. 0 u 1
8 V
0 2
5 V
9 1
C
8 1
8 V
7 1
N E
6 1
8 V
5 1
1 S
4 1
1 D
3 1
6 R 7 0 6 C 0 4
8 0 2 4 n 7
HOT2 3
2
GND1
26MHz
TP1(LBNAD_PAM_IN)
TP2(HBNAD_PAM_IN)
LGE Internal Use Only
VRF_2V85 VRF_2V85