Service manual
MD-R3
– 44 –
A
B
C
D
E
F
G
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Figure 44 SCHEMATIC DIAGRAM (5/10)
NOTES ON SCHEMATIC DIAGRAM can be found on page 33.
FW950
FW951
BI351
CNS351
C354
0.1
C353
0.1
C370
0.1
CNS651
CNP651
R965
1K
SW950
POWER
SW980
CD-PLAY
SW981
CD-STOP
R968
1.8K
R967
1.5K
SW984
DISC3
SW983
DISC2
SW982
DISC1
VR101-2
5K(B)
VR101-1
5K(B)
VR651-2
1K(C)
VR651-1
1K(C)
R352
100K
R351
100K
18K
R973
SW989
TOC-EDIT
10K
R972
SW988
START
5.6K
R971
SW987
DISC3
OPEN/CLOSE
3.9K
R970
SW986
DISC2
OPEN/CLOSE
2.7K
R969
SW985
DISC1
OPEN/CLOSE
SW954
CUE
R953
1.8K
SW953
MD-REC
R952
1.5K
R950
1K
R951
1.2K
SW952
MD-STOP
SW951
MD-PLAY
R960
33K
SW962
PROGRAM
R959
3.9K
SW961
INPUT
R958
2.7K
SW960
REVIEW
R954
1K
SW955
MD-EJECT
R957
1.8K
R956
1.5K
R955
1.2K
SW959
DISP
SW958
TIMER
SW957
NAME
SW956
ENTER
R966
1.2K
R356
1K
R355
1K
C358
100/10
C357
100/10
R353
4.7K
R354
4.7K
R362
47K
C362
10/16
C356
220P
C360
680P
R360
100K
IC351-2
NJM4560D
R361
47K
C361
10/16
R357
820
C355
220P
C359
680P
R359
100K
IC351-1
NJM4560D
MIC AMP.
R358
820
R350
100
C351
100P
(CH)
J351
C659A
0.022
321
1
2
3
1
2
3
6
5
4321
4
5
6
10
11
12
13
14
15
16
17
18
19
20
9
8
7
3
21
22
23
24
2
6
5
4321
6
5
4321
4
8
2
3
1
7
6
5
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
CNS652
CNS101
CNP901
D952
SLR325MG
D950
SLR325MG
D951
SLR325MG
L901
22µH
C910
10/16
C906
1
C907
1/50
R946
6.8K
R964
10K
R962
10K
R963
10K
R977 220
R976 220
R975 220
R997
2.2K
R998
10K
C992
100P
(CH)
C991
100P (CH)
C990
100P (CH)
C980
0.1
IC990
BU2092F
INPUT/OUTPUT EXPANDER
1
JP908 1K
JP918 1K
JP917 1K
µ-COM GND-
FILMNT 1-
5V-
FILMNT 2-
BACK UP 5V-
DFS-
–31V-
MD P-OUT-
MD LO/EJ-
P-IN-
MD DSTB-
MD K-DATA-
MD DSCK-
MD DATA-
P MUTE-
MD LOAD-
DAC MODE-
MD RESET-
DAC DATA-
DAC CLK-
MD S-ID-
RESET SW-
DIG-SW-
MD SYN-
D-3
D-2
D-1
D-2
D-3
D-1
B
(1/2)
(1/2)
LD ON
MOD1
MOD0
CD
LCK
CLK
DATA
VSS
VDD
OE
HS
DIG-SW
MIC PWB-B3
HEA
D
+B
+B
+B
+B
+B
HEADPHONES
VOLUME
CNP652
P47 11 - B
TO MAIN PWB
CNP101
P46 4 - A
TO MAIN PWB
REC
VOLUME.
CNP351
P46 1 - C
TO MAIN PWB
5.09V
8.23V
1.2V
0V
0V
0V
0V
1.2V
–8.2V
0V
0V
4.6V
0V
0.09V
0.03V
0.03V
0.03V
0.4V
0V
0.01V
0.03V
0.02V
0.02V
0.02V
0.4V
0.4V
FC402
CNP402
P46 6 - H
TO MAIN PWB
SWITCH PWB-B5
SWITCH PWB-B4
44
11
77
11
+B
+B
+B
–
+
–
+
–B
–B
MIC