Toshiba FT-8509, Service Manual

Page: 23 / 53

23
IC AND TRANSISTOR VOLTAGE CHART
Base Unit
Unit [V] Unit [V]
Ref No. PIN STBY TALK NOTE Ref No. PIN STBY TALK NOTE
1 2.1 2.1
21
0.7 0.7
2 2.1 2.1
22 2.7 2.7
GND
3 2.1 2.1 23 2.7 2.7
4 0.0 0.0 GND
IC3
24
2.7 2.7
5 2.1 2.1
1
0 0 FLOAT
6 2.1 2.1
2
0 0 FLOAT
7 2.1 2.1
3 0.0 0.0
GND
IC1
8 5.0 5.0 Vcc
IC5
4 5.2 5.2
1 4.1-6.0 4.1-6.0 SINE WAVE
1
2.1 2.1
2 4.0-5.0 4.0-5.0 SINE WAVE
2
2.1 2.1
3 4.8 4.5-5.0 PULSE 3 2.1 2.1
4 5.2 5.2 Vcc
4
0.0 0.0 GND
5 4.8 4.5-5.0
5
2.1 2.1
6 4.8 4.8
6
2.1 2.1
7 4.8 4.8
7
2.1 2.1
8 5.2 5.2
IC6
8 5.2 5.2 Vcc
9 1.5-3.0 2.0-2.4
1
2.2 2.2
10 0.7 0.7
2
2.2 2.2
11 0.3-2.0 0.5-0.8 3 1.6 1.6
12 0.8 0.8
4
2.4 2.4
13 5.2 0.0 SQ
5
2.9 2.9
14 0.0 0.0 OPEN
6
2.8 2.8
15 0.0 0.0 GND
7
2.9 2.9
IC2
16 5.2 5.2 8 2.8 2.8
1 2.8 2.8
9
2.9 2.9
2 2.8 2.8
10
2.8 2.8
3 2.5-3.0 2.8 11 2.4 2.4
4 0.8 0.7
12
2.8 2.8
5 2.8 2.8 OPEN
13
2.9 2.9
6 2.8 2.8
14
0.0 0.0 GND
7 2.6 2.6
15
3.4 3.4
8 5.2 5.2 OPEN 16 7.8 7.8
9 0.0 0.0 GND
17
1.2 1.2
10 0.0-5.2 0.0-5.2 PULSE
18 0.0 0.0
GND
11 0.0 0.0 GND 19 0.0 0.0
12 2.7 2.7
20
5.5 5.5
13 5.2 5.2
21
2.9 2.9
14 2.7 2.7
22 0.0 0.0
GND
15 2.7 5.2
23
0.0 0.0
16 0.0 5.2 RX MUTE 24 2.6 2.6
17 0.0 5.2 TX MUTE
25
5.5 5.5
18 5.2 5.2 OPEN
26
2.4 2.4
19 1.7 1.7 OPEN 27 1.6 1.6
IC3
20 2.7 2.7
IC7
28
2.2 2.2