4. TROUBLE SHOOTING
4.3.4 Check PAM Control Signal
Figure 4-8
U502
SKY 77325
4
2
6
5
8
3
1
2
0
1
9
2
2
2
3
2
1
1
8
1
6
1
4
1
3
1
1
1
0
9 7
15
12
17
BS
PAC_ENABLE
GSM_IN
DCS_PCS_IN
V
C
C
1
B
V
C
C
1
A
N
C
V
B
A
T
T
V
S
E
N
S
E
V
A
P
C
P
G
N
D
G
N
D
9
G
N
D
8
G
N
D
7
G
N
D
6
G
N
D
5
G
N
D
4
G
N
D
3
G
N
D
2
G
N
D
1
RSVD
GSM_OUT
DCS_OCS_OUT
GPIO_17
C501
27p
C581
12p
C504
0.01u
PA_EN
PA_BAND
TX_RAMP
C503
0.01u
C506
0.01u
C502
33p
GPIO_16
R501
100
C507
22u
VBAT
C505
18p
C520
39P
R509
1k
C509
27p
R502
100
Almost the
same?
Transmit IQ signal OK,
Check RF transmit level
reference on next page.
D ow nl oa d S /W
again
Check TX-RAMP and
PA-EN
C h e c k t h e
difference
*Reference Graph
4-8
Yes
No
14
Содержание C3600
Страница 21: ...4 TROUBLE SHOOTING 4 7 Camera Trouble Figure 4 14 20 ...
Страница 35: ......
Страница 36: ......
Страница 37: ... 12 11 Press hinge along this hole then disassemble this two parts front and lower assy 13 14 15 ...