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(4) Checking PAM Control Signal
TEST POINT
Waveform
Checking Flow
Check TX_RAMP and PA_EN
Check if there is
Any Major Difference or not
Refer to Graph 4-7
CIRCUIT
V
B
A
T
C
5
1
0
C
5
0
9
3
3
u
1
0
p
1
D
C
S
_
P
C
S
_
N I
2
A
N
D
_
S
E
L
E
C
T
3
T
X
_
E
N
A
B
L
E
R
5
0
3
4
V
B
A
T
T
3
6
R
5
0
4
R
5
0
5
5
G
N
D
1
5
0
1
5
0
6 [
d
] B
6
V
R
A
M
P
R
5
0
6
7
G
S
M
_
N I
3
0
R
5
0
7
R
5
0
8
1
8
0
1
8
0
5 [
d
] B
R
F
2
V
8
5
TX_RAMP
PAM_EN
Graph 4-7
Similar?
Yes
Go to Next Step
- 59 -
4 . TROUBLE SHOOTING
R
5
0
0
C
5
0
1
1
5
K
3
9
p
R
5
0
1
1
0
0
C
5
0
4
2
7
p
R
5
0
2
1
0
0
C
5
1
1
2
7
p
R
F
2
V
8
5
C
5
1
8
C
5
1
9
0
0 .
2
2
u
2
2
p
Band Select (R501)
GSM TX_Low
DCS/PCS TX_High
No
Download S/W
T
X
_
R
A
M
P
P
A
_
B
A
N
D
P
A
_
E
N
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