Sharp MD-R3 Service Manual page 44

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