Sharp CD-BA250 Service Manual page 22

CD-BA250/CD-BA2600
MAIN PWB-A1(1/3)
R-CH
1 1
A
A_GND
2 2
L-CH
3 3
CD_GND
4 4
CD_+B
5 5
A_+B
6 6
BI601
CNS601
(A_+B) SW_5V
1
CD_+B SW_5V
2
GND
3
L-CH
4
GND
B
5
R-CH
6
GND
7
M_+12V
8
A+10V
9
GND
10
GND
11
SP_DET
12
SP_RLY
13
SW_5V
14
UN_SW_5V
15
–VP
17
C
VF2
18
VF1
19
P_IN
20
–15V
21
D
TAPE1
PLAYBACK HEAD
T1_R
3 1
A_GND
2 2
E
T1_L
1 3
CNP101
M_GND
1
ERASE HEAD
ERASE
6
2
T2_R2
5
3
A_GND
4
4
T2_R1
3
5
T2_L1
2
6
T2_L2
1
7
CNP102
TAPE2
F
RECORD/
PLAYBACK HEAD
G
H
• NOTES ON SCHEMATIC DIAGRAM can be found on page 37.
1
All manuals and user guides at all-guides.com
+B
+B
R618
330
R619
330
+B
+B
+B
+B
-B
KTA1266 GR
2 3
Figure 22 SCHEMATIC DIAGRAM (3/9)
R604
Q602
KTC3199 GR
R610
2.2K
C636
0.001
C635
0.001
R611
2.2K
+B
+B
-B
R149
Q113
C136
R147 KRC104 M
0.022
10K
2
3
1
R146
10K
R148
4.7K 1
2 3
Q112
Q114
KRC104 M
R111
15K
C101
560P
R101
1K
C102
Q101 R102
560P
1K
2SCC1845 F
C103
R
180P
R103
C107
2.2K
330P
R105
3.3K
Q103
2SCC1845 F
L
C104
180P
R106
3.3K
R104
2.2K
Q102
2SCC1845 F
R112
4
– 22 –
R601
1K
R602
1K
IC601
LC75341
AUDIO PROCESSOR
1
DI
C610
10K 1/50 CE
2
CCB
VSS
3 + –
INTERFACE
C608 LOUT
4
0.1
(ML)
LBASS
5
C606
R606
LTRE
3.9K 0.15
6
C612
C614
0.0027
1/50 LIN
7
C616 LSEL0
8
4.7/50 C618
1/50 L4 AUX
9
C620
1/50 L3
DECK
10
C622 L2
TUNER
11
1/50
L1 CD
12
R608 C624
1.2K 1/50
C626
0.0056
+B
+B
150
L
R
R137
220K
Q107
KTC3199 GR
R115
56
C111
C115 R123
100/25
560P
5.6K
C113
0.033
C117
R117 47/25
100K
R119
3.9K
R113
C125
1K
C109 22/50
330P
24 23 22 21 20 19 18 17
–
+
112K
Hich=T1 Hich=CHROME
112K
– +
1 2 3 4 5 6 7 8
C108
C126
330P
22/50
R114
C110
1K
330P
R118
R120
100K 3.9K
R124
5.6K
C114
0.033
C116
C118
C112
560P
47/25
100/25
R116
56
15K
IC101
AN7345K
PLAYBACK AND RECORD/
PLAYBACK AMP.
5 6
24
CLK
+B
VDD
23
C6
VREF 22
22
C
ROUT
21
RBASS
20
C60
RTRE
0.1
19
RIN
18
C
1
RSEL0
17
C
4.
R4
16
C
1
R3
15
C
1
R2
14
C
1
R1
13
C623
1/50
-B
REC
R139 R138
10K 10K
Q
KTC3
16 15 14
– +
56K
56K
– +
9 10 11
C132
47/25
R134
10K