The Function Selector Switch - TANDBERG 12 Service Manual

Q 1
I 3030
ft
1"'&t i
+ 4 5 V
c 3
2 500y
6 4 Y
5 5 0 1
+27 Y
D 5 0 r
Bzx 25
5 V
+250
2,5 v
R 5 0 5
I K
R 507
5 1 0
1,8 V
0 s01
u 2 8 1 8 1 2
s 5 0 3
)
R 7
5 t
5.2 THE SWITCHING SYSTEM
R e f . b l o c k d i a g r a m f i g . 3 9 .
5.2.1 The function selector switch
The function selector switch has two levers (Ch. I and
C h . 2 ) . E a c h o f t h e l e v e r s h a s t h e f o l l o w i n g t h r e e
p o s i t i o n s , R E C O R D , P L A Y B A C K a n d A M p . T h e t w o
l e _
v e r s c a n b e o p e r a t e d , i n d i v i d u a l l y . A n i n t e r l o c k
s y s -
tem has been introduced between lhe operating
lever and the two levers for the function seteclor
s w i t c h t o p r e v e n t u n i n t e n t i o n a l e r a s u r e .
@;i,
M O T O R
60 c/s
T A P E E N D O P R . L E V .
S W I T C H
S W I T C H
; C l = 1 , 1 ; 1
R 5 0 1
820
2 V t
F i g . 5 l . T h e p o w e r s u p p l y , s c h e m o f i c .
' Q 5 0 2
u 2 8 1 8 l 2
T R . N 0 , 2 8 6
? -
l ,
O F F
_ _ _ l t
R 5 0 6
5 , 1 K
L l r _ _
3 _ J _ _ _ _ E l
I N T E R L O C K