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Section IV
Principles of Operation
Model 7754A/7414A
~-----,
A10
1
DRIVE UNIT
1
1
1
1
I
1
r-----,
I
A10Al
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GEAR BOX
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1
L
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81
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CHART
1
DRIVE
MOTOR
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INTERLOCK
1
S3
1
1
L_
-
4V
RUN
o
~~
V
MARKER
-24V
-12V
-12V
------'
)+------+4r---+-+--+-+-=~
) + - - - - - - +
3
>-_-+-+-+......L.l:~
2
>----+-4---1---.-::.=..J
~----...,
A3Al
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1
TRANSFER
1
1
BOARD
1
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1
1
1
1
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LIO
(
(
(
(
(
(
(
)1
(
)1
(
)1
(
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<
)1
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G;---'
1
CONNECTOR
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BOARD
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I (
),
I(
),
1
1
1
1
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1
L
J
r:~2-1
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HEAT
1
I
CONTROL
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BOARD
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1
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J261
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XKI
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1
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1
1
1
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1
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'10
I
IMOTOR
I
~~----~
XKI
C4
F2-RECORDER
2.5AT (1I5V)
1.25 AT C230V)
FI-RECORDER
6A (I15V)
=
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=3ATC230V)+
~r3G
==
t
1
~ ~J.cr----t~
SI
POWER
S4
LINE VOLTAGE
SELECTOR
J5 POWER INPUT
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-
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:l1r
1
1
tJ
it
:llt
:llt
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t
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IREMjTE I
I RjNI
3
R9 • RIO R7 • R8
.
:
,
::II :-
C4fCyCTCr
r
l.{K
.l
-24V
r+
....
..
j
R3
R4
: R5
R6
,
HEAT SUPPLY
F
HEAT CONTROL -12V
2
~II
RI
..
~
-24V RUN
7
I I
r
- 24V REMOTE RUN
/6
REMOTE EVENT MARKER
8
~
-24V REMOTE
L
~
MARKER
10
~
MARKER SWITCH INPUT (GROUND)
~
----------------------------------
----------_--1
r-----------------------------------------;~---,
G¥J
C4J
qJ
C¥J
c:P
qJ
C¥J
~
~
CONTROL SWITCH
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I
Figure
4-6.
Recorder Power Control Circuits, Simplified Diagram.
4-6
07754-1
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