Sharp CD-ES770 Service Manual page 4

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
5 6
D_GND
6
7
+B
+8V
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
T1_R
1 1
A_GND
2 2
T1_L
3 3
CNP101
F
M_GND
ERASE HEAD
1
1
ERASE
2
2
T2_R2
3 3
A_GND
4
4
T2_R1
5
5
6
T2_L1
6
7
T2_L2
7
TAPE2 CNP102
RECORD/
PLAYBACK HEAD
G
H
• NOTES ON SCHEMATIC DIAGRAM can be found on page 5-1 (CD-ES700).
1
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FM SIGNAL
PLAYBACK SIGNAL
RECORD SIGNAL
CD SIGNAL
VIDEO SIGNAL
AUDIO SIGNAL
KTC3875 GR
R617
2.2K
R619
R616
330
2.2K
R618
330
C102
560P
SWITCHING
C101
Q102
560P
KTC3200 GR
0V R104
2.2K
0.7V
0V
C104
0.7V
180P(CH) R106
3.3K
0V
Q104
KTC3200 GR
SWITCHING
SWITCHING
C103
Q103
180P
KTC3200 GR
0V
0.7V
R105
3.3K
0V
0.7V
R103
2.2K
Q101
0V
KTC3200 GR
SWITCHING
2 3
Figure 4 SCHEMATIC DIAGRAM (2/7)
: Addition/Changed
C657
R657
680P 18K
C609
R605
1/50
10K
R613
390 R986
8.2K
Q601
C607
R988
0.12
2.2K R607
(ML)
R611 3.9K
C611
2.2K
0.0027
C613
R610
C615
2.2K
R987 4.7/50
2.2K
C617
C631
0.01
C619
C621
1/50
C623
SWITCHING
KRC104 S
R146 R147
10K 10K
0V
9.3V
R148
8.6V 4.7K
SWITCHING 0V
Q112 0V
9.3V
KTA1504 GR
Q114
KRC104 S
SWITCHING
L
R112
15K
R102 R116
56
1K C112
47/25
C114
0.039
R101
R118
100K
1K
R114
1K
C110
R 330P
C108
330P
0V
24 23 22
0V
–
+
Hich=T1
0V
+ –
1 2 3
L
C107 330P C109
330P
R113
1K
IC101
AN7345K
PLAYBACK
0V C113
AND
0.039
0V
RECORD/
PLAYBACK
0V
R115
56
R111 15K
4
– 4 –
R601 1K
R602 1K
IC601
C653
LC75341
220P
AUDIO PROCESSOR
1 24
DI CLK
CE +B
2 23
VDD
CCB
VREF
VSS
INTERFACE
3 22
+
-
LOUT ROUT
4 21
C606
C605
LBASS RBASS
5 20
0.1
0.1
LTRE
RTRE
6 19
1/50 RIN
LIN
7 18
RSEL0
LSEL0
8 17
-
1/50
R4
L4 AUX
9 16
R3
1/50 L3
DECK
10
15
L2 R2
TUNER
11 14
L1 CD R1
12 13
C624
1/50 1/50
R149
150
Q113
3.4V
REC_R
3.4V
R138
10K
0.7V
0V
Q108
KTC3875 GR
MUTING
R
C116
560P
R124
6.8K
R120
3.9K
IC101
R128
C126
AN7345K
5.6K
22/50
21 20 19 18 17 16
–
+
112K 56K
Hich=CHROME
112K 56K
+
–
4 6 5 7 8 9
C125
22/50
R123
6.8K
C115
560P
5 6
C601 C6
0.0
220/16
C603
220/10
C61
C608
1/5
0.12(ML)
R6
3.
C6
0.0
C614
1/50
C616
4.7/50
C618
1/50
C620
1/50
C622
1/50
R139
10K
0.7V
Q107
KTC3875 GR
MUTING
15 14 13
10 11 12