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
+8V +B
8
7
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
FM SIGNAL
PLAYBACK SIGNAL
RECORD SIGNAL
CD SIGNAL
VIDEO SIGNAL
AUDIO SIGNAL
R617
2.2K
R619
R616
330
2.2K
R618
330
C102
560P
SWITCHING
C101
Q102
560P
KTC3200 GR
R104
0V
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
KTC3875 GR
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
C621
1/50
R146 R147
10K 10K
9.3V
R148
8.6V 4.7K
SWITCHING
Q112
9.3V
KTA1504 GR
L
R112
15K
R102
1K C112
47/25
C114
0.039
R101
R118
100K
1K
R114
1K
R C108
330P
0V
24 23
0V
0V
1 2
L
330P
C107
R113
1K
IC101
AN7345K
PLAYBACK
0V C113
AND
0.039
0V
RECORD/
PLAYBACK
0V
R111 15K
4
– 4 –
R601 1K
R602 1K
IC601
C653
LC75341
220P
AUDIO PROCESSOR
1 24
DI
CLK
CE
2 23
VDD
CCB
VREF
VSS INTERFACE
3
+ 22
-
ROUT
LOUT
4 21
C605
LBASS RBASS
5 20
0.1
LTRE
RTRE
6 19
1/50 RIN
LIN
7 18
LSEL0 RSEL0
8 17
-
1/50
L4 AUX R4
9 16
R3
C619 1/50 L3
DECK
10
15
R2
L2
TUNER
11 14
L1 CD R1
12 13
C623
1/50
R149
150
SWITCHING
Q113
KRC104 S
3.4V
0V
0V
0V
3.4V
R138
10K
Q114
KRC104 S
0.7V
SWITCHING 0V
Q108
KTC3875 GR
MUTING
R
R116
56
C116
560P
R124
6.8K
R120
3.9K
IC101
R128
C110
C126
AN7345K
5.6K
330P
22/50
22 21 20 19 18 17
–
–
+ +
112K
Hich=T1 Hich=CHROME
112K
+ – +
–
3 4 6 5
7 8
C125
C109
22/50
330P
R123
6.8K
C115
560P
R115
56
5
C6
C601
0.0
220/16
+B
C603
220/10
C61
C608
1/5
0.12(ML)
C606
R6
3.
0.1
C6
0.0
C614
1/50
C616
4.7/50
C618
1/50
C620
1/50
C622
1/50
C624
1/50
REC_R
R139
10K
0.7V
Q107
KTC3875 GR
MUTING
16 15 14 13
56K
56K
9 10 11 12
6