Tektronix 7603 Service And Instruction Manual page 151

7603/R7603
D I A G R A M S A N D C I R C U I T B O A R D I L L U S T R A T I O N S
Symbols and Reference Designators
E l e c t r i c a l c o m p o n e n t s s h o w n o n t h e d i a g r a m s a r e i n t h e f o l l o w i n g u n i t s u n l e s s n o t e d o t h e r w i s e :
C a p a c i t o r s =
V a l u e s o n e o r g r e a t e r a r e i n p i c o f a r a d s ( o F ) .
V a l u e s l e s s t h a n o n e a r e i n m i c r o f a r a d s ( p F ) .
R e s i s t o r s =
O h m s ( Q ) .
G r a p h i c s y m b o l s a n d c l a s s d e s i g n a t i o n l e t t e r s a r e b a s e d o n A N S I S t a n d a r d Y 3 2 . 2 - 1 9 7 5 .
L o g i c s y m b o l o g y i s b a s e d o n A N S I Y 3 2 . 1 4 ' 1 9 7 3 i n t e r m s o f p o s i t i v e l o g i c . L o g i c s y m b o l s d e p i c t t h e l o g i c
f u n c t i o n p e r f o r m e d a n d m a y d i f f e r f r o m t h e m a n u f a c t u r e r ' s d a t a .
T h e o v e r l i n e o n a s i g n a l n a m e i n d i c a t e s t h a t t h e s i g n a l p e r f o r m s i t s i n t e n d e d f u n c t i o n w h e n i t g o e s t o t h e l o w s t a t e .
A b b r e v i a t i o n s a r e b a s e d o n A N S I Y 1 . 1 - 1 9 7 2 . .
O t h e r A N S I s t a n d a r d s t h a t a r e u s e d i n t h e p r e p a r a t i o n o f d i a g r a m s b y T e k t r o n i x , I n c . a r e :
Y 1 4 . 1 5 , 1 9 6 6 D r a f t i n g P r a c t i c e s .
Y 1 4 . 2 , 1 9 7 3
L i n e C o n v e n t i o n s a n d L e t t e r i n g .
Y 1 0 . 5 , 1 9 6 8 L e t t e r S y m b o l s f o r O u a n t i t i e s U s e d i n E l e c t r i c a l S c i e n c e a n d
E l e c t r i c a l E n g i n e e r i n g .
T h e f o l l o w i n g p r e f i x l e t t e r s a r e u s e d a s r e f e r e n c e d e s i g n a t o r s t o i d e n t i f y c o m p o n e n t s o r a s s e m b l i e s o n t h e d i a g r a m s .
A
Assembly, separable or repairable
H Heat dissipating device {heat sink,
S Switch or contaclor
(circuat board, etc)
heat radiator, etc)
T Translormer
v,
m
o
{
o
z
o
0
o
I'
=
U'
AT Atlenuator. lixed or variable
B Motor
BT Baltery
C
Capacitor, fixed or variable
C B C i r c u i t b r e a k e r
CR Diode, signal or rectifier
D L D e l a y l i n e
D S
I n d i c a t i n g d e v i c e ( l a m p )
E Spark Gap, Ferrite bead
F Fuse
F L
F i l t e r
u *
7
H R
H Y
J
K
L
M
P
o
.t
)
I
5
t o
2 d
rectrtrer
R Flesistor, fixed or variable
R T T h e . m i s t o r
Healer
H y b n d c r r c u i t
Connector, stationary portion
R e l a y
I n d u c t o r , l i x e d o r v a r i a b l e
M e t e r
Connector, movable portron
Transistor or silicon-controlled
- t 2 V 3
TC Thermocouple
TP
Test point
U Assembly, inseparable or non-repairable
( i n t e g r a t e d c i r c u i t , e t c . )
Electron tube
Voltage regulator (zener drode, etc.)
Wirestrap or cable
Crystal
Phase shifter
Plug to E.C. Board
tB-oil ldentifies Panel
Controls, Connectors and
Indicators
Modified Component
(Depicted in Grevs, or with
Grey Outline)--S6e Parts Lisl
P l u g I n d e x
Refer to Waveform
Coaxial Connector
S h i e l d i n g
Heat Sink
Decoupled or Filtered
Voltage
Etched Circuit Board
O u t l i n e d i n B l a c k
T h e f o l l o w i n g s p e c i a l s y m b o l s m a y a p p e a r o n t h e d i a g r a m s :
S t r a p o r L i n k
Cam Switch
Closure Chart
( D o t i n d i c a t e s
swatch closure)
w t 6
+luv
SEL Value Selected
at Factory
R r +
Test Voltage
I n t e r n a l
Screwdriver
Adiustment
F u n c t i o n a l B l o c k
34,.';
Board Name
O u t l i n e \
+
t
A s s e m o r v N U m o e r -
D I A G
- R e f e r t o D i a g r a m N u m b e r
Y
i l a
P r 3
J 1 4
R E V S E P 1 9 8 4
VERT I C AL AMPL I F I ER Af
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