— 25 —
Unit [V]
Unit [V]
Ref.
No.
Pin
STBY
TALK
Note
Note
16
0.0
None
0.0
None
Connect
Connect
17
2.7
INTERVAL
2.7
18
0.0
GND
0.0
GND
19
2.9
2.7
20
0.0
GND
0.0
GND
21
0.0
GND
0.0
GND
22
1.0
with 0.7V sin
1.0
with 0.7V sin
IC603
23
3.0
with1.5VAC(int)
1.5
with 1.4V sin
24
0.0
GND
0.0
GND
25
0.0
None
0.0
None
Connect
Connect
26
0.0
2.7
27
0.0
2.7
Vol:Lo
28
0.0
2.7
29
0.0
2.7
SQURE
30
0.0
2.7
31
0.0
2.7
32
0.0
None
0.0
None
Connect
Connect
33
0.0
None
0.0
None
Connect
Connect
34
0.0
None
0.0
None
Connect
Connect
35
2.7
INTERVAL
2.7
36
0.0
None
0.0
None
Connect
Connect
37
0.0
None
0.0
None
Connect
Connect
38
3.0
2.9
39
0.0
None
0.0
None
Connect
Connect
40
0.0
None
0.0
None
Connect
Connect
41
2.7
INTERVAL
0.0
42
2.7
INTERVAL
2.7
43
0.0
0.0
44
2.8
INTERVAL
0.1
45
0.0
None
0.0
None
Connect
Connect
46
2.7
Pulse
0.0
47
2.7
Pulse
0.0
48
2.7
Pulse
2.9
49
0.0
GND
0.0
GND
50
0.0
2.7
51
0.0
2.9
with LoPULSE
52
0.0
2.7
SQURE
53
0.0
0.0
54
0.0
2.9
55
0.0
2.9
SQURE
56
2.9
2.9
57
0.0
2.7
SQURE
Ref.
No.
Pin
STBY
TALK
Note
Note
58
0.0
0.0
59
0.0
0.0
60
0.9
INTERVAL
1.0
IC603
61
2.8
2.9
62
2.8
2.9
63
2.8
2.7
64
2.8
2.9
1
3.0
3.2
2
3.5
3.8
IC605
3
0.0
GND
0.0
GND
4
3.5
3.8
5
3.0
3.2
1
2.7
INTERVAL
2.9
2
2.3
INTERVAL
2.5
3
2.4
INTERVAL
2.5
4
2.8
INTERVAL
3.0
5
2.4
INTERVAL
3.1
6
2.4
INTERVAL
3.1
7
2.4
INTERVAL
3.1
IC606
8
2.8
INTERVAL
3.0
9
0.6
INTERVAL
0.9
10
0.6
INTERVAL
0.6
11
0.6
INTERVAL
0.7
12
0.5
INTERVAL
0.8
13
2.7
INTERVAL
0.0
14
0.0
None
0.0
None
Connect
Connect
15
0.0
GND
0.0
GND
16
2.8
INTERVAL
2.8
1
0.0
GND
0.0
GND
IC609
2
3.6
3.6
3
3.0
3.0
Summary of Contents for FT-8981
Page 1: ...SERVICE MANUAL PUBLISHED IN JAPAN May 2001 FILE NO 2B0 200104 FT 8981 CORDLESS TELEPHONE ...
Page 9: ... 8 BLOCK DIAGRAMS Base Unit ...
Page 10: ... 9 Handset ...
Page 12: ...Handset 12 13 FT8981 Sche p65 01 05 25 13 21 Page 9 Adobe PageMaker 6 5J Win ...
Page 27: ... 28 ELECTRICAL PARTS LOCATION Base Unit Main PCB ...
Page 28: ... 29 Handset Main PCB ...
Page 29: ... 30 WIRING DIAGRAMS Base Unit ...
Page 30: ... 31 Handset ...