Sharp MD-MX30 Service Manual page 44

MD-MX30/MX30W
MAIN PWB-A1(2/2)
A
B
CV02
10/16
RCH
1
C
GND1(A)
2
LCH
3
CV01
10/16
GND(A)
5
SP_PROT
13
FAN_MOTOR
D
11
POWER
12
FAN_H/L
14
MOTER_LOCK
15
PROGRAM
16
+5R6V_USWD
18
E
+12V(A)
6
+6V(A_MD)
22
-12V(A)
4
R821
+7R3V (M)
19
F
+5V_SWD
17
GND(D)
10
+7R3V (CD)
25
R827
GND(CD2)
24
GND(CD1)
23
G
+5V(D_MD)
21
GND(D_MD)
20
VF1
1
7
VP 2
8
VF2
3
9
BI802-2
H
• NOTES ON SCHEMATIC DIAGRAM can be found on page 31.
1
ICV01
STK40203
POWER AMP.
CH1
CH1
IN
NF
1 2
CV05
220P
RV05
1K
RV03
1K
CV07
10/50
CV04
RV02
47P
39K
CV03
RV01
47P
39K
CV59
0.001
IC801
MD-MX30:AN78L05
CONSTANT VOLTAGE
MD-MX30W:KiA7805AP
REGULATOR
5.6V 14.1V
1 3
2
C827
0.6V
0.047
D809 C826
(ML)
DS1SS133 0.022
C815
D810
1000/6.3
1N4004S
R808
100
(1/2)
D815
DS1SS133
R820
1K
11.9V
R814
R813
330
330
(1/4)
(1/4)
C818
0.047
C821 R824
(ML)
0.047 100K
(ML)
C820
ZD804
0.047
DZ6.2B
(ML)
D816
DS1SS133
1K
R815
470(1/4)
R816
C822
470
R823
100/10
(1/4)
100K
ZD805
DZ5.1A
1K
C825
D822
0.047
DS1SS133
(ML)
CONSTANT VOLTAGE REGULATOR
C830
0.047
(ML)
KIA7805AP
2 3
Figure 44 SCHEMATIC DIAGRAM (8/13)
CH1
Pre CH1
+OUT
VCC -OUT
3 4 5 6 7 8 9
0V
0V
0V
CV11
CV12
0.022
0.022
RV15
6.8K
RV11
RV13 RV12
0.2(1)
3.3K 0.2(1)
CV09
CV10
RV07
3.3P
3.3P
1K
RV09
39K
RV51
100 (1/4)
CV53
100/35
RV50
(105 C) CV54
6.8K
10/50
(105 C)
25.3V
QV05
KRC104M
3 0V
2
RV64
RV65
1
1K
0V 10K
SP_PROT
PROGRAM
C828
1/50
1N4004S
CONSTANT VOLTAGE
REGULATOR
R812
10
IC802
24.3V
3 1
KIA7812AP
(1/2)
2
0V
C817 C816
0.022 1/50
(105 C)
R810
C819
2.7K
47/25
(1/2)
ZD803
R811
DZ130A
2.7K
(1/2)
IC803
KIA7806AP
CONSTANT VOLTAGE
REGULATOR
7.3V
3 1
14.8V
2
1.3V
D812
DS1SS133 C824 C823
0.022 1/50
D813
(105 C)
DS1SS133
4.9V 14.8V
3 1
IC804
2 C831 C829
0.022 1/50
0V
4
– 44 –
CH2 Pre
CH2 SUB
+OUT -VCC
-OUT GND
10 11 12 13 14
4.8V
0V QV02
KTC3199GR
0V
RV16
6.8K
RV14
-23.6V
3.3K
RV08
1K
QV03
CV06
KTC3200GR
220P
RV10
RV06
-23.3V
39K
1K
-23.6V
RV52
RV62
(1/4)
100
10K
CV50
100/35
CV51 RV63
(105 C)
10/50 10K
(1/2)
25V
24.7V
CV60
QV04 0.001
KTA1268GR
D818
CV62
0.001
VF1-1
1
2 VP-1
VF2-1
3
BI802-1
5
15
R8
56
C806
2200/35
D804
2A02
C807
4700/25
D805
2A02
R805
220
-33.3V
(1/2)
K
6