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23
B. ELECTRICAL PARTS
No standard parts are included in this parts list with the exception of choice resistors.
The standard parts in the circuit diagrams are indicated with symbols from which the service code number can be derived,
The key to tle code is given below:
Carbon resistor
Carbon resistor
Carbon resistor
Wire-wound resistor
Carbon resistor
V/ire-wound resistor
Wire-wound resistor
Carbon resistor
o.25
1
0.5
0.4-1.8 W
0.5
<1
Mf,
>1
Mo
<2 .2 Mst
> 2.2 Mo
<10
Mo
>10
Mo
< 1.5 Mo
> 1 .5 Mo
<270
st
>2 7 0
st
w
:
5Vo
: lïVo
:
SVo
: 1,0Vo
:
lV o
:
27o
0.5Vo
:
5Vo
: lïVo
: l0Vo
:
5Vo
57o
57o
902/K
e00/P
90r /
9 01/ W
902/P
938/ A
938/B
902/ A
5.5
1 0
0.125
w
w
ïr-
4{F
ïF
ïF
elF
aè
+
ar
Ceramic capacitor
Ceramic "Pin-up" capacitor
Styroflex capacitor
Polyester capacitor
Paper capacitor
Wire-wound trimmer
Ceramic trimmer (< 22E)
Air trimmer
(> 30E)
Air trimmer (for printed-wiring boards)
Example:
500-700 v
500 v
500 v
400 v
1000 v
Code number
Code number
lVo
l0Vo
l0Vo
904/
904/P
90s/D . .
906/
906/V
907 /
908 /
908 / P. .. .
90r / I 20K
904/ 487
-=ll-
4.7
The correct values of the choice-resistors and capacitors are
carbon resistors, unless otherwise specified.
determined during factory adjustment. All resistors are vaporised
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