Marantz 74 CD38 - Page 28

DECODER CIRCUIT DIAGRAM
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3
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CONN.1403 TO CONN. 1001
ON DISPLAY CIRCUIT
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$388
QEQOQ 32 WP GOOLOBHwWOwON
LOW PULSES
WITH IR COMMANDS
45
+ a
* a
45
MC68HC11ERxxB3 9 3706 fad 3723 fed 3701 fx a709 fx 3710
A Ss
i is '
eeerx Moa!
NOT USED SDATI
200
KILL
nm
Fy
3
2
o>
TO POWER SUPPLY
CIRC DISENA
3717
SDATO
ACTIVITY
IN PLAY MODE SLD << ik]
DISRES
NRST
TO IC 7000 i
ON SERVO CIRCUIT sIcL Q
SIDA
SDIS
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ACK
Ire AC TTOOWIO: NNASSOEOYHWW ESS
SLEDGE SW
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NSAI OOO
SAAB AABAAAAALSAGALAZ?
Bs
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Hi
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2.5V
0,5us/DIV
KJ
>
L_ fale
VV
[ke
]
3604
SV
CLOSING
OVOPENING <3)
2.5V REST
FROM R3048 ON jen
SERVO CIRCUIT
3101 fe
7500
700 (XK) BCS58B
SAAT345GP/M5
+5V OPENING
35V CLOSING
OV REST
0,
3109
<3)
LOW
WHEN
READING
TOC
A
=
WOLK
DACWC
35V
IN
REST
_
(2207)
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av}
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WHEN
OPENING
OR
CLOSING
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a.
an
pace.
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,
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k
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Pr A:
a
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1
1
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CHANNEL
—
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CHANNEL
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e
i
KILLR
a
KILLR
STOP
5nV
Do
og
3113
oo
J
I
L
i
|
=
110
AB
16,93
MHz
START
[wv
SyPLAY
MODE,
awl
ig
3n7
at
gia
tied
--
M
HIGH
PULSES
PAUSE,
NEXT,
PREVIOUS
22p
I
100n
22uF/40V
may
TCT
ITTTT
ETE
TILIZIL
EI:
“
P
i
PULSE
DENSITY
CONTROL
“s
3144
SERVO
CIRCUIT
N
_
N
°
ry)
1
2 3 4
5
6 7 8
9
10
"
2
13
14 15 16
7
18
19
3108_0321_1_R 3108_0321_1_8
PCS 60 984