Audio Processor - Sharp CD-ES770 Service Manual

CD-ES770
MAIN PWB-A1 (1/3)
BI601
A
R-CH
1 1
A_GND
2 3
L-CH
3 4
CD_GND
4 5
+B
A+5V
6
5
D_GND
6
7
+8V +B
7 8
D+5V
+B
8 9
CNS601
+B
B
LD+7V
10
A_5V
+B
11
D+5V
+B
12
D_GND
7
L-CH
14
A_GND
6
R-CH
15
CD_D_GND
16
C
CD_A_GND
17
AGC
26
D
E
TAPE1
PLAYBACK HEAD
1 1
2 2
3 3
F
ERASE HEAD
1
1
2
2
3 3
4
4
5
5
6
6
7
7
TAPE2
RECORD/
PLAYBACK HEAD
G
H
• NOTES ON SCHEMATIC DIAGRAM can be found on page 5-1 (CD-ES700).
1
FM SIGNAL
PLAYBACK SIGNAL
RECORD SIGNAL
CD SIGNAL
VIDEO SIGNAL
AUDIO SIGNAL
R617
2.2K
R619
R616
330
2.2K
R618
330
C102
560P
T1_R
A_GND
T1_L
SWITCHING
CNP101
C101
Q102
560P
KTC3200 GR
0V
0.7V
0V
M_GND
C104
0.7V
180P(CH)
ERASE
T2_R2
0V
Q104
A_GND
KTC3200 GR
T2_R1 SWITCHING
T2_L1
T2_L2
CNP102
C103 SWITCHING
Q103
180P
KTC3200 GR
0V
0.7V
R105
0V 3.3K
Q101
0V
KTC3200 GR
SWITCHING
2
Figure 4 SCHEMATIC DIAGRAM (2/7)
C657
680P
R605
10K
R613
390 R986
8.2K
Q601
KTC3875 GR
R988
2.2K R607
R611 3.9K
2.2K
R610
2.2K
R987
2.2K
C631
0.01
R146
9.3V
SWITCHING
Q112
9.3V
KTA1504 GR
R112
15K
R102
1K
R101
1K
R104
2.2K
0V
0V
R106
0V
3.3K
C107
AN7345K
PLAYBACK
0V
0V
RECORD/
PLAYBACK
0V
0.7V
R103
2.2K
R111
3 4
– 4 –
: Addition/Changed
R601 1K
R602 1K
R657
18K
IC601
LC75341

AUDIO PROCESSOR

1
DI
C609
1/50 CE
2
CCB
VSS INTERFACE
3
C607 LOUT
4
0.12
C605
(ML)
LBASS
5
0.1
LTRE
C611
6
0.0027
C613 1/50 LIN
7
C615
LSEL0
8
4.7/50
C617 1/50
L4
9
C619 1/50
L3
10
L2
C621
11
1/50
L1
12
C623
1/50
SWITCHING
Q113
KRC104 S
R147
10K
10K
0V 3.4V
R148
8.6V 4.7K
0V
0V
3.4V
Q114
KRC104 S
SWITCHING
L R
R116
56
C112
C116
47/25
560P
C114
0.039
R124
R118 6.8K
100K
R120
3.9K
R114
IC101
1K
C110
AN7345K
R 330P
C108
330P
24 23 22 21 20 19
–
+
112K
Hich=T1
112K
+ –
1 2 3 4 6 5
L
330P
C109
330P
R113
1K
IC101
R123
C113 6.8K
AND
0.039
C115
560P
R115
56
15K
5
C653 C6
C601
0.0
220P 220/16
24
CLK
+B
23
VDD
C603
220/10
VREF
+ 22
-
C61
C608
1/5
0.12(ML)
ROUT
21
C606
R6
RBASS
20
3.
0.1
RTRE
C6
19
0.0
RIN C614
18
1/50
RSEL0 C616
17
4.7/50
-
C618
AUX R4
16
1/50
R3
C620
DECK
15
1/50
C622
R2
TUNER
14
1/50
R1
CD
13
C624
1/50
R149
150
REC_R
R138 R139
10K 10K
0.7V
0.7V
Q107
0V
Q108
KTC3875 GR
KTC3875 GR
MUTING MUTING
R128
C126
5.6K
22/50
18 17 16 15 14 13
–
+
56K
Hich=CHROME
56K
+
–
7 8 9 10 11 12
C125
22/50
6