MD-R2
– 29 –
Figure 29 BLOCK DIAGRAM (2/2)
LINE IN
J101
IC101
NJM4560D
OPE AMP
+7V
+7V
-7V
-7V
REC VOL
VR901
SYSCLK
AD DATA
LRCLK
BLCK
DA DATA
MODE
CLK
DATA
Q601
Q602
IC501
REGULATOR
S81233YK
J301
DIGITAL -IN
(COAXIAL JACK)
RX302
DIGITAL IN
(OPTICAL JACK)
TX302
DIGITAL OUT
(OPTICAL JACK)
IC301
74HCU04
INVERTER
IC302
NAND GATE
74HC10AP
DIGITAL IN
MD UNIT
DIGIN VCC
DIGITAL OUT
Q503
A-7V
POWER
CIRCUIT
MD+
POWER
CIRCUIT
5V SYSTEM
POWER
CIRCUIT
BACK UP 5V
DIGITAL 5V
MD 5V
MD+
S-ID,SYN,RESET,DSTB,DSCK
K-DATA,MD DATA
FL DB
FL901
~~
~~
DIG
SEG
JOG
KEY
RX-IN
IC901
IX0237AW
SYSTEM
MICROCOMPUTER
MD
MUTE
SW901
JOG
SWITCH
KEY IN
BLOCK
UN970
REMOTE
SENSOR
FL VP(-31V)
A/D +5V
BACK UP +5V
FL
POWER
CIRCUIT
FL VP(-32V)
FL DB
RECTIFYING
CIRCUIT
F551
1A
F552
1A
T551
POWER TRANSFORMER
AC 120V
60Hz
HEADPHINES
J981
H.P.VOL
VR981
IC651
NJM4560D
OPE AMP
Q451
Q452
MUTE
J101
LINE OUT
3
4
5
1
7
8
3
5
12
19
16
13
15
24
26
10
2
3
4
5
1
7
2
1
3
8
3
4
5
1
7
8
6
1
2
8
10
13
17
21
21
42
60
89
45
90
92
97
2
3
6
32
10
33
96
91
100
~
~
+7V
-7V
IC201
UDA1340
AD/DA
CONVERTER
IC601
LINE AMP.
NJM4580D
Q502
Q506
Q504
A+7V
POWER
CIRCUIT
3V
~