Sharp CD-BA250 Service Manual page 24

CD-BA250/CD-BA2600
A
1
R934
1K
R938
56K
B
C932
0.001
R932
56K
R930
100K
C
D
E
A_+B
1
CD_+B
2
L-CH
4
GND(A_GND)
3
F
R-CH
6
P_IN
20
GND(CD_GND)
7
A+10V
+B
9
–VP
17
VF2
18
VF1
19
SP_RLY
13
M_+12V
8
–15V
21
G
GND(D_GND)
5
SW_5V
14
GND(A_GND)
10
UN_SW_5V
15
SP_DET
12
GND(M_GND)
11
H
• NOTES ON SCHEMATIC DIAGRAM can be found on page 37.
1
L-CH
POWER AMP.
CH1
–
2 3 4 5 6
7
R942
22K
C938
C940
150P
100/50
C936
15P
R944
100
R940
R950
R936
1K
0.1(1W)
820 R952
1K
C948
C934
0.022
4.7/50
R954
1.5K
Q902
KTC3199 GR
+B
+B
+B
+B
+B
-B
+B
+B
-B
+B
+B
2
Figure 24 SCHEMATIC DIAGRAM (5/9)
IC901
STK4029S
8
9 10 11 12
C946 C945
R949
10/50 10/50
0.1(1W)
D911
DS1SS133
R951
C947
1K
0.022
R953
1.5K
C931
0.22/50
+B
1
2 3
2
Q907
C969
KRC107 M
3.3/50
-B
+B
+B
IC903
KIA7810AP
VOLTAGE
REGULATOR
+B
+B
CONSTANT VOLTAGE REGULATOR
3 4
– 24 –
R-CH
CH2
–
13 14 15
C939
150P
C935
4.7/50
Q904
D913
KTC3199 GR R956
DS1SS133
56K
R955
56K
R957
56K
+B
1
3
Q908
KRA107 M
IC902
KTC2026
R903
3.3K
R908
560
R975
8.2
3 1
R976
2
8.2
C918
0.1
(ML)
IC904
KIA7805AP
3 1
2
C921
0.1
(ML)
IC904
KIA7805AP
5
C953
C952
0.047 0.047
(ML)
(ML)
R958
R959
4.7
4.7
+
BI902
C903
2200/63
+B2
C904
2200/63
6