B&K 415 - Page 100

TABLE 12.3 TRANSISTOR VOLTAGE CHART
All transistor voltage readings are DC and are taken with the FUNCTION
switch at the position indicated with
CHROMA switch off. See schematics for transistor basing diagrams. Field Effect Transistors (FET's) are listed
at the end of the chart. All voltage readings plus or minus 20%.
Parts
Layout
Schematic Transistor
Figure FUNCTION
Emitter
Base
Collector
Symbol Function No. Sw Position Vol!age Voltage
Voltage
IF
l.OV 1.7 V
5.0V
--
Q-1
Spare Mkr Osc. 12.2
MKR
3.0 V
3.6 V
10.6 V
IF
1.4 V 1.5 V
5.0 V
~·
Q-2
39.75 Mkr Osc.
12.2
MKR
3.7 V
3.2 V
10.5 V
IF
1.5 V 1.6 V
5.0 V
Q-3
-MKR ___
3:fv-
--~------
-·
10.4 V
41.25 Mkr Osc. 12.2
3.3 V
IF
1.5V 1.6 V
5.0V
Q-4
41.67 Mkr Osc.
12.2 MKR
4.0V 3.2 V
10.3
V
IF 1.5 V 1.5 V 5.0V
-·
-
Q-5
42.
l 7 Mkr Osc.
12.2
MKR
3.7V 3.1 V
10.3V
IF
1.9 V 1.5V 4.6 V
Q-6
42.67 Mkr Osc.
12.2
MKR
4.3 V 3.1 V 10.0V
IF
1.6V
1.5
,.
5.0 V
Q-7
42.75 Mkr Osc.
~-
12.2
MKR
4.0V 3.l V 10.4 V
IF
1.5 V 1.5V
5.0V
Q-8
44.00 Mkr Osc.
12.2
MKR
4.2V 3.0 V 10.3 V
IF
1.6 V 1.5V 4.9V
Q-9
45.00 Mkr Osc.
12.2
~KR 4.0V
3.2 V
10.2 V
IF
1.3 V
1.5V
5.0V
Q-10
~MKR-
·-·-·-·
----------
-·-·--··--·-··-·-·-·
~----
45.75 Mkr Osc.
12.2
3.6 V 3.3 V 10.4 V
IF
1.3 V 1.6 V 5.0V
Q-11
47.25 Mkr Osc.
12.2 MKR 3.6 V 3.3 V I0.5V
Q-12*
Waveform Gen
12.2 VIDEO
Q-13*
Waveform Gen
12.2 VIDEO See Waveforms of Figure
12.6
Q-14*
Horiz Sweep Phase Splitter
12.2
VIDEO
Q-15*
44 MHz Detector
12.2 VIDEO
1.2 V 2.0 V
6.3
V
Q-16*
10.7 MHz Detector
12.2
VIDEO
0.7 V 1.3 V
6.4
V
Q-17*
Marker Amplifier
12.2
VIDEO
3.5 V 4.0 V
11.6
V
Q-18*
Marker Output Amplifier
12.2
VIDEO
4.3 V
5.0V
10.4
V
Q-201
44 MHz Sweep Osc.
12.4
VIDEO
3.8 V 3.4 V
7.5V
Q-203
10. 7 MHz Sweep Osc.
12.4
10.7 MHz
4.1 V
2.4 V 6.5
V
Q-301
Ch 4 Osc.
12.3
Ch4
6.5 V
5.5 V 12.4
V
Ch 4 or
Q-302*
Ch 4 -Ch 10 Mixer-Amplifier
12.3
Ch
IO .55 V
1.0 V
11.6
V
Q-303
Ch 10 Osc.
12.3
Ch 10
2.7V
3.0V 12.4
V
Q-304
10.7 MHz Mkr Osc.
12.3 10.7 MHz
5.7 V
3.2 V 7.6 V
98