Sharp CD-BA250H Service Manual page 24

CD-BA250H/CD-BA2600H
MAIN PWB-A1(1/3)
A
CNS601
R-CH
1 1
A_GND
2 2
L-CH
3 3
CD_GND
4 4
CD_+B
5 5
A_+B
6 6
BI601
(A_+B)
SW_5 V
1
B
CD_+B
SW_5 V
2
GND
3
L-CH
4
GND
5
R-CH
6
GND
7
M_+12 V
8
A+10 V
9
GND
10
GND
11
SP_DET
12
SP_RLY
13
C
SW_5 V
14
–VP
17
VF2
18
VF1
19
P_IN
20
–15 V
21
-B
D
E
TAPE1
PLAYBACK HEAD
R-CH
T1_R
1 1
A_GND
2 2
T1_L
3
3
L-CH
CNP101
ERASE HEAD
M_GND
1 1
F
ERASE
2 2
T2_R2
3
3
R-CH A_GND
4
4
T2_R1
5
5
T2_L1
6
6
L-CH
T2_L2
7
7
TAPE2
RECORD/ CNP102
PLAYBACK HEAD
G
H
• NOTES ON SCHEMATIC DIAGRAM can be found on page 39.
1
All manuals and user guides at all-guides.com
R616
2.2K
C637
0.001
R618
330
R617
R619 2.2K
330
+B
+B
+B
+B
Q112~Q114 : SWITCHING
9.3 V
Q112
KTA1266 GR
9.3 V
C101
560P
C102
560P
0 V
0 V
C103
180P
0 V
2SC1845 F
C104
0 V
180P
0 V
0 V
Q101~Q106 : SWITCHING
2 3
Figure 24 SCHEMATIC DIAGRAM (3/9)
– 24 –
R604 C610
1/50
10K
Q602
KTC3199 GR
R612
390 C608
R610
0.1
2.2K
R606
C638
C636 3.9K
0.001
0.001
C612
0.0027
C635
0.001
R611
2.2K
R608
1.2K
C626
0.0056
R149
150
+B
3.4 V
Q113
C136 KRC104 M
R147
L
0.022
10K
0 V
3
2
1
0 V
R146
10K
R148
4.7K
0 V
1
3.4 V
3
8.6 V 0 V
Q114
2
KRC104 M
R111
15K
R101 C111
1K 100/25
C113
0.033
R102
1K R117
100K
Q105
KTC3199 GR
Q101
R113
2SC1845 F
1K
0.7 V
R
C107
R103
330P
0 V
2.2K
0 V
24 23
R105
3.3K
0 V
0.7 V
Q103
1 2
L C108
330P
R114
1K
Q104
2SC1845 F
R118
0.7 V
100K
0 V
0 V C114
R106
0.033
3.3K
R104
C112
0 V
2.2K 100/25
0.7 V
R116
Q102
56
2SC1845 F
R112 15K
4
R601
1K
R602
1K
C650
220P IC601
LC75341
AUDIO PROCESSOR
C652
220P
1 24
DI CLK
+B
CE
2 VDD 23
C651
CCB
220P VREF
+
VSS
INTERFACE
3 22
–
ROUT
LOUT
4 21
C605
C606 0.15
0.15
RBASS
5 20
LBASS
LTRE
RTRE
6
19
C614
1/50 LIN RIN
7 18
C616
4.7/50
RSEL0
LSEL0
8 17
C618
1/50
L4 R4
AUX
9 16
C620
1/50 L3
R3
DECK
10
15
C622
L2 R2
1/50 TUNER
11 14
R1
L1
CD
12 13
C624
1/50
-B
R
Q107,Q108 : MUTING
R137
220K
R139 R138
0 V
10K
10K
0.7 V
0 V Q107
KTC3199 GR
R115
56
R123
5.6K
R119
3.9K
C125
22/50
C109
330P
22 21 20 19 18 17 16 15
– –
56K
+ 112K +
Hich=T1 Hich=CHROME
+ +
112K 56K
–
–
3 4 5 6 7 8 9 10
C126
C110
22/50
330P
C132
47/25
R120
3.9K
R124
5.6K
C116
560P
R134
10K
IC101
AN7345K
PLAYBACK AND RECORD/
PLAYBACK AMP.
5 6
C603
22/50
C607
0.1
R60
3.9K
C613
1/50
C615
4.7/50
C617
1/50
C619
1/50
C621
1/50
C623
1/50
REC_R
0.7 V
Q108
KTC3199 GR
0
14 13
11 12