Sharp MD-M3 Service Manual page 36

MD-M3/M1
A
JV91
RV91
RV92
HEADPHONE
LV91
2.2µH
(XH)
CV92 CV91
100P 100P
JACK PWB-B2
B
C
PRE SECTION
D
E
TO CD SECTION
MD-M3:P39 8~12-H
MD-M1:P40 8~12-H
F
G
H
• NOTES ON SCHEMATIC DIAGRAM can be found on page 26.
1
DP22
DS1SS133
KV91
BIP01
DP23
DS1SS133
CHASSIS
GND
100(1/2W)
HP-RCH
100
5 5
(1/2W)
GND(A)
4 4
HP-LCH
3 3
GND(M)
2 2
H/P SW
1 1
FWV11
LUG901
(352)
CX11
CHASSIS
10/35
GND
L-CH 27
P35 8-A
AGND 26
R-CH 25
CX12
10/35
QX12
3.05V
HSC1815 GR
RX15
RX61
1K 47K
RP58 0V
1
47K
3
AMP HPSW
24
0V
DX18
SY MUTE
23
DS1SS133
QP16
AMP MUTE 22
KRC104 M
AMP LEVEL 21
AMP FAN 20
RP59
+B
+12V(D)
18
17
GND(D)
+B
+12V(A)
16
MDAVCC
5.32V
GND(A)
15
–B
–12V(A)
14
+B
CD+6V 12
CDGND1
11
+B
MDDVDD
10
MDAVCC 9
ADGND 8
Q813
KRC107 M
3
V LOAD
7
4.39V
1
0V
MDDGND1
6
MDDGND2
5
CDGND2
4
VF1 3
–31(VP)
2
VF2 1
2 3
Figure 36 SCHEMATIC DIAGRAM (4/14)
CV15
RV21
RV11
CV23 0.033(ML)
1K
100
0V
10/35
(1/2W) 5
7 (1/2)
0.27V
6
0V
RV17
10K
RV15
RV19 RV23
100K
270 100K
ICV11
NJM4565D
HEADPHONE
AMP.
RV16
100K
RV24
100K
RV18
CV16
10K
0V
0.033
2
(ML)
1 (2/2)
3
RV12
0.29V 8
CV24
0V
4 RV22
100
10/35
1K
(1/2W)
CV18
10/35
CV17
RV25
RV26
10/35
220
220
QX11 QX13
HSC1815 GR HSC1815 GR
0V RX35
0V
CX55
2.2K
0.71V 0.001
0.7V
0V
0V
0.71V
0.7V
0V
0V
RX36
2
2.2K
3.01V
1 DX17
DS1SS133
QR11
3
KRA107 M
0V
CX16
10/35
1
0V
2
2.62V
2
3
0V
QP17
KRC107 M
RP60
47K
47K
+12V(A)
12.57V
R822 R811
330 330
C810
0.047
C814
10/35
–12V(A) –12.59V
Q809
7.01V
2SD2012
+6V(CD)
18.25V
Q810
HSC1815 GR
7.62V
R817
560
8.16V
D806 C815 ZD805
DS1SS133 47/25 DZ8.2B
CD GND(D)
Q811
+V(MD)
2SD2012
5.43V
Q812
HSC1815 GR
6.07V
6.63V
R819
R820
560
0V
330
2
6.63V
C818
ZD806
47/25
DZ8.2A
4
– 36 –
RX54
100K
ICX11
LA4451
POWER AMP.
14 13 12 11
CX19
RX21
1/50
1K
RX22
CX20
1K
1/50
RX23
270
CX23
100/50
DX11
RX17
DS1SS133
10K
ON:H
MUTE:OPEN
RX16
220K
Q801
2SD2012
12.29V 18.10V
12.87V
C803
1/50
Q802
2SD2012
+16V
17.90V
R851
13.22V
2.2
Q803
R810
HSC1815 GR
150
13.81V
R807
C807 ZD802
560
47/25
DZ13C
ZD804
C812
R813
DZ13A
47/25
560
–13.15V
R816
R852
5.6
150
(Fusible 1/4W)
–19.79V
Q808
2SB1375
+16V
F998
800mA/125V
+16V
18.26V
F999
1.6A/125V
5
FM
9 8 7
10
R805
2.2
R803
680
ZD801
DZ13A
6