29
Handset
Unit[V]
Unit[V]
Ref. No.
PIN
STBY
TALK
NOTE
Ref. No.
PIN
STBY
TALK
NOTE
1
0.0
2.9
2
0.0
2.5
3
0.0
2.5
4
0.0
3.0
5
0.0
2.6
6
0.0
2.6
7
0.0
2.6
IC401
8
0.0
3.0
9
0.0
0.9
10
0.0
0.6
11
0.0
0.7
12
0.0
0.8
13
0.0
0.0
14
0.0
0.0
OPEN
15
0.0
0.0
GND
16
0.0
3.0
1
0-2.0
1.9
2
0-2.0
1.9
3
0-1.5
1.5
4
0-0.4
0.6
5
0-0.4
1.5
6
0-0.4
1.5
7
0-1.8
1.8
8
0.0
3.4
9
0.0
0.0
GND
10
0-3.0
1.6
11
0.0
0.0
GND
IC403
12
0-1.0
1.5
13
0-3.0
3.0
14
0.0
1.5
15
0.0
1.5
OPEN
16
0.0
3.4
17
0.0
3.4
18
0.0
1.5
19
0.0
1.5
20
0.0
1.5
21
0-0.3
0.6
22
0.0
1.5
23
0.0
1.5
24
0.0
1.5
1
0.0
0.0
OPEN
IC404
2
3.5
3.4
3
0.0
0.0
GND
4
0.0
0.0
GND
5
0.0
2.0(AC)
6
0-3.5
2.0(AC)
7
3.5
3.4
8
0.0
0.0
GND
9
0.0
0.0
OPEN
10
0.0
0.0
OPEN
11
0.0
3.4
12
0.0
3.4
13
0.0
3.4
14
0.0
3.4
15
0.0
0.0
16
3.5
0-0.3
17
0.0
0.0
OPEN
18
0.0
0.0
OPEN
19
0.0
0.0
GND
20
0.0
0.0
OPEN
21
0.0
0.0
22
0.0
0.0
23
0.0
0.0
24
0.0
0.0
25
0.0
0.0
26
1.0-3.0
3.4
IC404
27
1.0-3.0
3.4
28
0
0
OPEN
29
3.8
3.8
30
3.5
3.4
31
3.5
3.4
32
3.5
3.4
33
3.5
3.4
34
3.5
3.4
35
3.8
3.8
36
3.8
3.8
37
0.0
3.3
38
0.0
0.0
39
0.0
0.0
40
0-3.0
0-3.0
41
0
0.0
42
0-2.4
0.2
43
0.0
0.0
GND
44
0-0.8
0.8
45
0.0
0.0
46
0-3.0
0.0
47
0-3.0
3.0
48
0-3.0
3.0
Summary of Contents for FT-8939
Page 2: ...CORDLESS TELEPHONE SERVICE MANUAL FILE NO 2B0 9904 FT 8939 PUBLISHED IN JAPAN Sep 1999 ...
Page 11: ...9 BLOCK DIAGRAMS Base Unit Main ...
Page 12: ...10 Base Unit DSP ...
Page 13: ...11 Handset ...
Page 14: ...12 13 SCHEMATIC DIAGRAMS Base Unit Main ...
Page 15: ...14 15 Base Unit Key ...
Page 16: ...16 17 Handset ...
Page 33: ...34 ELECTRICAL PARTS LOCATION Base Unit Main PCB ...
Page 34: ...35 Base Unit Key PCB ...
Page 35: ...36 Handset Main PCB ...
Page 36: ...37 38 WIRING DIAGRAMS Base Unit ...
Page 37: ...39 Handset ...
Page 40: ...42 Handset 7 8 4 1 16 17 17 5 10 15 11 12 2 9 6 13 14 3 17 MAIN PCB ASSY RF MODULE HANDSET ...
Page 62: ......
