Sharp SD-AT1000 Service Manual page 34

SD-AT1000
A
B
VF2
1
1
VF1
2 3
–VP FOR FL
3 4
AC_RELAY
4 5
SP_RELAY
5 6
C
D
E
SW701
DIGITAL
F
G
BI703
TO PROTECT CIRCUIT PWB
H
• NOTES ON SCHEMATIC DIAGRAM can be found on page 11.
1
C701
1/50
RED
TIMER LED
LED701
304VT2E3
R798
10K
R794 R795 R796
R797
1.2K
1.8K 1.5K 1K
SW703
SW702 SW704 SW705
TUNER
LINE TUNING UP TUNING
(BAND)
DOWN
SW706
POWER
RM723 R753
4.7K
2.7K
JOG701
JOG VOLUME
+B
GND
1 2 3 4 5 6
CNS01
P40 1 - E
2
Figure 34 SCHEMATIC DIAGRAM (5/11)
1 2 3 4 5 6 7 8 9 10 11 12
81
DIG8
82 DIG7
83
DIG6
DIG5
84
DIG4
85
86 DIG3
87 DIG2
DIG1
88
89 VEE
R701 1K
L_MUTE
90
R702 1K
91 W_S_MUTE
R703 1K
92 F_S_MUTE
R704
1K
93 C_S_MUTE
R705
1K
94
S_S_MUTE
R706
1K
95 S_MUTE
R707
2.2K
96 TIMER LED
97
GND
C702
C703
150P(CH)
10/16
L701
98
VREF
2.2 µH
R708
99 AREA
1K
100 KEY1
R709
1K
+B
R788
10K
R789
10K
R790
10K
R791
15K
D704
MA111
R793
100K
R752
4.7K
C720
0.001
+B
+B
RM721
10K
27 26 25 24 23 22
27
3 4
– 34 –
FL701
FL DISPLAY
13 14 15 16 17 18 19 20 21 22 23 24
80 79 78 77 76 75 74 73 72 71 70 69
SYSTEM MICROCOMPUTER
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
C709~C713:
100P(CH)
21 20 19 18 17 16 15 14
CNP501
P30 1 - F
TO MAIN PWB
5
25 26 27 28 29 30 31 32 33 34 35 36
68 67 66 65 64 63 62 61 60 59 58 57
IC701
IX0558AW
18 19 20 21 22 23
C7
R728
220
820
C7
0
C714
12P(CH)
+B
+B
13 12 11 10 9 8 7 6 5 4 3 2
6