N-S Generator/Output Schematic - Zenith ZCM-1490 Service Manual

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30V
I«lRIZ
RETURN
+16VDC
R7410
Ik
7404 +
T
J
R7411
10
I
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D7401
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f - - -
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R7430
R7431
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C7412 R7443
N-S
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0.1
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R7406
10k
R7407
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C7405 R7404
10k!?
C7406 R7409
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10k
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10k
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27k
R7543
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100 I
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R7529
91k
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C7512
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l
R7524 C7502
R7530
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470/25V I
10k
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10k
2 '-.... 17
6
_
_ 1C7503
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5
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R7445 ~
100
L
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3.9k
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10k
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12
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10k
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C7514::h
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C7516
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+
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5
I
r
13
R7540
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R7541
470k
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-
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.,.. RX7536
18
FROM lC7401
PIN 13
C7413 R7417
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10k
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f---'\/V\-
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07404
R7422
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R7418
10k
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I I
Q7410
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rP
1
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C7422
Q7411
T
1 R7440
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R7452
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10k
27k
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C7415
R7450
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5.6k
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R7436
Q7407!P R7428
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~
Q7408
R7427
R7429 + - - - + - - - - 1
10k
6.8k
10k
rl
10k
:--
SOUTH
NORTH
LEVEL
LEVEL
C7423
R744B
100
=r:
100
25V
r
-
-16VDC
R7456
10k
R7435
lOOk
NORTH
PHASE
R7439
27k
R7438
8.2k
R7437
B.2k
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10k
4
11
R7433
lOOk
SOUTH
PHASE 8
0""-0
0""-0
0""-0
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C7521
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10
I--
C7522
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9
c-
14
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10k
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I
R7542
10k
4
1
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100~
~
R7545
2.2k
10
o
R7510
2.7k
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R7546
15k
7
R7509
100
-16VDC
Figure 8-12.
N-S Generator/Output Schematic
Schematics and Waveforms
Page 8-19
VCC
TO R7525
R7514
6.19k, II.
R7512
2.0k, II.
~
R7515
lk
R7513
2.0k,I%
R7516
66.5k, II.
R7517
11.8k, II.
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22
25V I
NP -
C7520 .
II/25V
_
NP
R7518
Ik
'c~
CR7504
-16VDC
I,
1/21.'

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