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4 . TROUBLE SHOOTING
(4) Checking RX IQ
TEST POINT
Waveform
Checking Flow
Che ck C514, C516.
Check if there is
Any Major Difference
Refer to Graph 4-4
U
5
0
0
S
4 I
2
0
5
Similar?
Yes
Redownload software and calibration againg
CIRCUIT
R
F
2
V
8
5
C
5
1
8
C
5
1
9
0
0 .
2
2
u
2
2
p
1
R
X
Q
N
2
R
X
P I
3
R
I X
N
4
T
X
P I
5
T
I X
N
6
T
X
Q
P
7
T
X
Q
N
Graph 4-4
No
- 52 -
C
5
3
2
1
0
0
0
p
C
5
1
4
3
9
p
C
5
1
6
3
9
p
Replace U500
1
3
M
H
Z
Q
P
Q
N
I
N
P I
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