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
1
3
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
+B
+B
+B
+B
+B
+B
-B
2 3
Figure 22 SCHEMATIC DIAGRAM (3/9)
Q602
KTC3199 GR
R610
2.2K
C636
0.001
C635
R618
0.001
330
R611
R619 2.2K
330
+B
+B
-B
Q113
C136
R147 KRC104 M
0.022
10K
2
1
R146
10K
R148
4.7K 1
2
Q112
KTA1266 GR
KRC104 M
R111
15K
C101
560P
R101
1K
C102 Q101 R102
560P
1K
2SCC1845 F
C103
180P
R103
2.2K
R105
3.3K
Q103
2SCC1845 F
C104
180P
R106
3.3K
R104
2.2K
Q102
2SCC1845 F
4
– 22 –
R601
1K
R602
1K
AUDIO PROCESSOR
1
DI
C610
R604
1/50 CE
10K
2
VSS
3
C608 LOUT
4
0.1
(ML)
LBASS
5
R606 C606
LTRE
3.9K 0.15
6
C612
C614
0.0027 1/50
LIN
7
C616 LSEL0
8
4.7/50 C618
1/50 L4
9
C620
1/50
L3
10
C622
L2
11
1/50
L1
12
R608 C624
1.2K 1/50
C626
0.0056
+B
R149
150
L R
3
3
Q114
R115
56
C111
C115
R123
100/25
560P
5.6K
C113
0.033
C117
R117 47/25
100K
R119
3.9K
R113
1K
C109
R 330P
C107
24 23 22 21 20 19
330P
–
+
112K
Hich=T1
112K
– +
5
1 2 3 4 6
L
C108
330P
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
R112 15K
IC101
AN7345K
PLAYBACK AND RECORD/
PLAYBACK AMP.
5
IC601
LC75341
24
CLK
+B
VDD
23
+ – C6
CCB
VREF 22
+ –
22
INTERFACE
C
ROUT
21
RBASS
20
C60
RTRE
0.1
19
RIN
18
C
1
RSEL0
17
C
4.
AUX
R4
16
C
1
DECK
R3
15
C
1
TUNER R2
14
C
1
CD
R1
13
C623
1/50
+B
-B
R137
REC
220K
R139
R138
10K
10K
Q
Q107
KTC3
KTC3199 GR
C125
22/50
18 17 16 15 14
– +
56K
Hich=CHROME
56K
– +
7
8 9 10 11
C126
22/50
C132
47/25
R134
10K
6