Sharp CD-BA250 Service Manual page 24

CD-BA250/CD-BA2600
A
1 2
C938
150P
C936
R934
15P
1K
R938
56K
R936
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
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IC901
STK4029S
L-CH
POWER AMP.
CH1
3 4 5 6 7 8
R942
22K
C940
100/50
R944
100
C946
10/50
R940
R950
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
+B
2 3
Figure 24 SCHEMATIC DIAGRAM (5/9)
R-CH
CH2
9 10 11 12 13
14
C935
C945
R949 4.7/50
10/50
0.1(1W)
D913
D911 DS1SS133
DS1SS133
R951
C947
1K
0.022
R953
1.5K
C931
0.22/50
+B
1
1
3 3
2 2
Q908
KRA107 M
Q907
C969
KRC107 M
3.3/50
IC902
-B
KTC2026
+B
R908
560
R975
8.2
+B
IC903
KIA7810AP
3
VOLTAGE
REGULATOR
IC904
KIA7805AP
+B
3
2
IC904
KIA7805AP
CONSTANT VOLTAGE REGULATOR
4
– 24 –
15
C939
150P
Q904
KTC3199 GR R956
56K
R955
56K
C953
0.047
R957
(ML)
56K
R959
4.7
+B
R903
3.3K
C903
2200/63
C904
2200/63
1
R976
2
8.2
C918
0.1
(ML)
1
C921
0.1
(ML)
5
C952
0.047
(ML)
R958
4.7
+
BI902
+B2
6