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STUDER REVOX B790 Instructions De Service page 43

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TACHO
SWITCH
BOARD /SPEED
poy
[45]
1
1.179145 j
PWR ON
yel
ARM INP.
whl
blu
VARIABLE
Hie
SPEED CONTROL
grn
|
i
brn
' +50V
Li TIME
CONSTANT
7" ADS.
sor
8 Dus
40K
Ri
698K
RAD
59K
C17
R52
0,04
{58K
-
1.179.152
8
VW
vco
7}
TCS
our
gam L ay
yA
Ic9
=¢;
CAB
| Qo
(METRIE
47k
6
R50
CTL
PS
DP2
OF
8
9
47K
10
oT
Cth
C75
12
Dory — four,
legal
®
MULTIPLIER
4
15
16
MULTIPLIER /
7
DIVIDER
8
19
AN 4004
4
Rag
'gh
5
R49
14g
mn
Ra
17
2
R20
4 DIGIT
VARIABLE
COUNTER
o
R24
7* 220
DISPLAY
BLANKING
47u4/46¥
MOTOR
CONTROL
BOARD
1.179.152
=
74C925N
=
MC 14011B
=
MC 145208
=
MC 140138
=
RC4558
=
MC14522B
=
MC145848
=
RC4558
=
MC14069B
=
MC14070B8
=
MC14568B
=
MC14023B
=
MC14522B
=
RC4558
=
NE555
=
7207
=
MC14046B
=
MC14046B
=
RC4558
Q1..7
BC 337/25
P
an
16
eine
DISPEAY BOARD,
Q 8...11 = BD 135/16
1N4448
8
7—13

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