Samsung SGH D900i Service Manual - Page 59
DCS Receiver
 |
View all Samsung SGH D900i manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 59 highlights
Flow Chart of Troubleshooting 9-14. DCS Receiver RX ON RF input : CH center freq : +67.7kHz Cell Power : -60dBm Yes F100 Pin11 No ≥ -65dBm Resolder RFS100,C103,L100 Yes F100 5,6 ≥ -68dBm Yes U106 pin 22 ≥ -70dBm pin 23 ≥ -70dBm No Check F100 No Check ANT Switch pin10,pin14 = L control circuit Yes No Resolder C109, C110, L106 Resolder F100 Yes No U106 pin 4,5,6,7 ≥ 0.2Vp_p Yes Check UCP201 U106 pin16,17,29, 32,36 ≥2.8V pin 10≥1.8V Yes No Check & Resolder C116,C119,C121 And PMU Part Resolder U106 END 9-22 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization
-
1 -
2
-
3
-
4
-
5
-
6
-
7
-
8
-
9
-
10
-
11
-
12
-
13
-
14
-
15
-
16
-
17
-
18
-
19
-
20
-
21
-
22
-
23
-
24
-
25
-
26
-
27
-
28
-
29
-
30
-
31
-
32
-
33
-
34
-
35
-
36
-
37
-
38
-
39
-
40
-
41
-
42
-
43
-
44
-
45
-
46
-
47
-
48
-
49
-
50
-
51
-
52
-
53
-
54 -
55 -
56 -
57 -
58 -
59 -
60 -
61 -
62 -
63 -
64 -
65
-
66
-
67
-
68
-
69
 |
 |
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
Flow Chart of Troubleshooting
9-22
9-14. DCS Receiver
Check F100
pin10,pin14 = L
Check UCP201
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Resolder U106
Check & Resolder
C116,C119,C121
And PMU Part
U106 pin16,17,29,
32,36 ≥2.8V
pin 10≥1.8V
Resolder C109, C110, L106
Resolder F100
Check ANT Switch
control circuit
U106
pin 22 ≥ -70dBm
pin 23 ≥ -70dBm
U106 pin 4,5,6,7
≥ 0.2Vp_p
F100 5,6
≥ -68dBm
RX ON
RF input : CH center freq : +67.7kHz
Cell Power : -60dBm
Yes
No
END
Resolder RFS100,C103,L100
F100 Pin11
≥ -65dBm