Sharp CD-ES770 Service Manual page 6

CD-ES770
A
18
R903
1K
B
R901 R902
56K 56K
C
14
D
A_GND
6
R-CH
15
SP_DET
24
SP_RLY
25
AGC
26
E
M_+13V
+B
22
LD+8V
10
A+10V
5
+B_PROTECT
21
+B
D+5V
12
A_5V
+B
F 11
SW_5V
+B
23
AGND(AUDIO PRO)
6
M_GND
18
D_GND
7
G
CD_D_GND
16
CD_A_GND
17
TAPE_A_GND
19
MAIN PWB-A1 (3/3)
H
• NOTES ON SCHEMATIC DIAGRAM can be found on page 5-1 (CD-ES700).
1
+
-
17 16 15 14 13 12 11 10 9
R910
1K
C911
100/100
R958
100(1/4W)
Fusible
R908
1K
C902
1/50
+B
KTC3875 GR
8V 10V
7 6
C855
10/50
C859
22/50
+B
+B
R857
22K
+B
D863
1N4148H
2
Figure 6 SCHEMATIC DIAGRAM (4/7)
IC901
STK41242
POWER AMP.
8 7 6 5 4 3 2 1
+B
-B +B
-B
R917
0.1(3W)
C917
0.01
R919
1.8K
Q902
KTC3875 GR
Q901
KTC3875 GR
D905
R920
1N4148H
1.8K
C919
0.01
R922
0.1(3W)
-B
SP_DET
D885
1N4148H
Q885
KTC3875 GR
R889
47K
R887
Q886
22K
R886
IC851
22K
SW 13V 5V
GND +B
5 4 3 2 1
C856
0.1
C854
(ML)
220/25
IC851
C865
R854
22/25
AN80T53
3.3K
VOLTAGE
REGULATOR
C864
22/25
+B
R853
22K
R864
22K
+B
R859
10K
3 4
– 6 –
: Changed
+B
+B
-B
ZD902 ZD903
DZ12BSB DZ12BSB
R926
R925
1.5K
1.5K
(1/2W)
(1/2W)
R927
R928
39K 39K
C921 C922
4700/50 4700/50
-B
C923
3300/71
C920
R930
3300/71
47K
R929
47K
D910
D909
DS1N404S
DS1N404S
VH-
VL- VL+
+B
+B
R888
47K
+B
-B
-B
+B
C850
4700/35
5
L902
3µH
R
Q903
KTC3875 GR
L901
3µH
L
VH+
+B
CHASSIS
BI801
+B
1 1 1
2 2
+B
3 3 3
+B
4 4 4
5 5 5
-B
6 6 6
-B 7 7 7
8 8 8
+B
9 9 9
10 10 1
11
1
2
3
4
5
6
CHASSIS
6