Service manual

MD-R2
– 30 –
A
B
C
D
E
F
G
H
1
23456
NOTES ON SCHEMATIC DIAGRAM can be found on page 43.
Figure 30 SCHEMATIC DIAGRAM (1/6)
GND
VDD
GND
VDD
INVERTER
OPE AMP.
2
3
6
5
1
7
1
4
3
1
2
1
1
1
0
198
7
6
5
4321
4
32
1
7
6
5
4321
1
4
3
1
2
1
1
1
0
1
98
312321
8
4
1234
5
6
7
89
P32 1 - D
TO DISPLAY PWB
CNP902
CNS472
P35 12 - F
TO MD MAIN PWB
CN1902
CNS471
1
1
9
181716151413121110987654
32
MD 7.5/5V
MD LOAD
MD SYN
MD S-ID
MD RESET
P MUTE
MD P-OUT
P-CNT
P-IN
MD DSTB
MD K-DATA
MD DSCK
DFS
DAC DATA
DAC MODE
DAC CLK
D-1,2
31V FL VP
MD DATA
P35 12 - C
TO MD MAIN PWB
CN1904
(OPTICAL JACK)
+B
COAXIAL
DIGITAL IN2
R-CH
L-CH
OS
(0.8V)
DATAi
–7V
+7V
(0.6V)
L3CLK
L3MODE
GND GND
D IN
D OUT
MD +7.5V/+5V
R-CH
L-CH
DIGITAL OUTDIGITAL IN-1
23 22 21 20
19 18 17 16 15 14 13 12 11 10
987654321
24
MUTE
DFS0 DFS1
DADATA
BLCK
LRCLK
ADDATA SYSCLK
D 7.5/5V
D 7.5/5V
D GND
DSTB
MDDATA
SERCH
KDATA
DSCK
BUCKUP
MD-ST
RESET
LOAD SW
PDOWN
D GND D GND D GND
(1/2)
+
(2/2)
+
BCK
WS
DATA0
TEST3 TEST2
L3DATA
AVSS
VSSO
VOUTL
VDDO
VOUTR
AVDD
VREFD
OVERFL
VDDD
VSSD
SYSCLK
TEST1
VSSA
VINL
VDDA
VREFA
VINR
VADCN
VADCP
10
11
1213
14
15
16 17
18
19
20
21 22 23 24 25
26
27
28
ANALOG
LINE IN2
–
–
ANALOG PLAYBACK SIGNAL
ANALOG RECORD SIGNAL
DIGITAL RECORD SIGNAL
DIGITAL PLAYBACK SIGNAL
C524
1000/6.3
J301
L101
0.22µH
C102
0.022
C120
0.01
C315
0.01
R305
56K
R304
2.7K
R303
220K
R409
220K
R554
68K
C531
0.1
C314
0.022
C310
0.022
C470
100P
C675
0.001
R410 220K
R408 220K
R407 220K
R406 220K
R405 330
C21
2
3.3/1
6
C519
0.022
R417
1K
R418
1K
C
2
4.
7
C203
47/10
C202
47/10
L201
10µH
C304
0.022
R307
22K
R309
10K
R312
82K
R313
47K
C303
0.022
C312
0.022
R553 68K
R552 39K
C118
100/10
C201
100/10
R404 560
R403 560
R402 560
R401 560
R413 4.7K
R412 4.7K
R411 4.7K
R416 8.2K
R415 8.2K
R414 8.2K
R203
1M
R202
680K
CNP301
C20
6
1/50
L302
10µH
C601
47/10
C602
47/10
R601
470
R602
470
R103
1K
R105
47K
R106
47K
R104
1K
R6
0
1
K
R6
1
1
K
R60
7
1K
R605
22K
R606
22K
R60
8
1K
C603
220P
C6
0
22
0
C60
220
P
C604
220P
C301
0.01
C119
0.022
R302
330
C313
0.022
D301
MTZJ5.1B
R301
82
C302
0.022
IC301
74HCU04
C305
0.022
L301
10µH
R308
22
C311
0.022
R310
3.3K
RX302 TX302
CNP471
R116
100
R115
100
C117
100/10
R111
1.5K
R112
1.5K
R109
1K
R107
100K
R113
1K
R108
100K
R110
1K
R114
1K
C105
220P
C115
47/10
C109
220P
C107
1/50
C113
47P
C110
220P
C106
220P
C116
47/10
C108
1/50
C114
47P
IC201
UDA1340
AD/DA CONVERTER



J101
IC101
NJM4560D
IC101
NJM4560D
IC302
74HC10AP6
NAND GATE