Toshiba FT-7007LBR, Service Manual

Page: 19 / 43

20
IC AND TRANSISTOR VOLTAGE CHART
Base Unit
Unit[V] Unit[V]
Ref. No PIN STBY TALK NOTE
1 Vcc 5-4.9 Sine wave
2 Vcc 4.9
3 Vcc-4 CLOCK 10.24MHz
4 Vcc-4 CLOCK 10.24MHz
5 Vcc-GND Vcc-GND Pulse
6 Vcc-GND Vcc-GND Pulse
7 Vcc-GND Vcc-GND Pulse
8 Vcc-GND Vcc-GND Pulse
9 GND 2-1 Sine wave
10 GND 1.5
11 1.2 2-1 Sine wave
12 1.1 1.5
13 1.0 2-1 Sine wave
14 0.7 1.5
15 1.0-GND 1.5
16 1.0-GND 2-1 Sine wave
17 GND 1.5 Sine wave
18 1.2 1.3
19 1.2 1.3 Sine wave
20 1.2 1.3 Sine wave
21 GND GND
IC1 22 0.5 1.5
23 Vcc-GND Vcc-GND Pulse
24 1-0.6 0.8 Sine wave
25 0.7 0.8
26 0.7 0.8
27 2-GND 1.0 Sine wave
28 2.8-2.4 Vcc-4.5 Sine wave
29 4-3.8 4.2-3.8 Sine wave
30 GND GND
31 4.9 4.5
32 4.9 4.6-4.4 Sine wave
33 4.9 Vcc
34 3.5 3.6-3.4 Sine wave
35 1.2-1.0 GND
36 1.0 1.0
37 0.1 0.7
38 3.5 3.5-3.4 Sine wave
39 0.5 1.5
40 1 1
41 2.0 2
42 4-3.5 3.8
43 5-4.8 Vcc-4.8 Sine wave
44 Vcc Vcc
Ref. No PIN STBY TALK NOTE
45 0.5 0.8
46 Vcc-4 3.8
47 GND 1.4
IC1
48 GND GND
1 OPEN OPEN Sine wave
2 OPEN OPEN Sine wave
3 GND GND
IC2
4 Vcc GND
1 GND GND
2 Vcc Vcc
3 GND GND
4 GND GND
5 3.8-GND 3.8-GND Clock
6 Vcc-GND Vcc-GND Clock
7 Vcc Vcc
8 GND GND
9 GND GND
10 GND GND NC
11 GND GND NC
12 GND GND
13 Vcc 4.8
14 GND GND NC
15 GND GND NC
16 GND GND NC
17 GND GND NC
18 GND GND NC
19 GND GND GND
20 Vcc Vcc POWER FAIL
21 Vcc Vcc
CHAGE DET
22 Vcc Vcc PAGE
23 GND Vcc RL CONT
24 GND Vcc BELL IN
25 GND GND NC
26 GND GND P/T
27 GND GND NC
28 GND GND NC
29 GND GND NC
30 GND GND NC
31 GND GND NC
32 GND GND NC
33 Vcc-GND Vcc-GND Pulse
34 GND GND NC
35 GND GND NC
IC3
36 GND GND NC