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SD-AT50
(Serial No. 208XXXXX ~ 210XXXXX)
A
POWER PWB-C(2/2)
B
+B
+B
R740
10K
A/D_RESET
R701
1K
R703
1K
SP_RLY
R723
8.2K
R704
C
BASS-SW
1K
R724
10K
AC_DETECT
R725
R706
100K
AMP_CLK
R726
AMP_SIN
100K
R707
1K
R727
AMP_SOUT
4.7K
R708
1K
D
E
+B
F
+B
G
18
H
• NOTES ON SCHEMATIC DIAGRAM can be found on page 10.
1
FM SIGNAL
R720
1K
32
31
30
29
28
27
26
25
D2
1
D3
PO-2 PO-1
2
24
D4
3
PO-0
D5
4
D6/CNTR0
Ain3/CMPO+
R705
1K
5
D7/CNTR1
Ain2/CMPO–
1K
6
P2-0/SCK
Ain1/CMPO+
Ain0/CMPO–
18
P2-1/Sout
17
P3-1/NT1
7
8
9
10
11
12
13
14
15
16
XL701
2 MHz
L701
2.2 µH
R768
330
+B
R744
100K
C706
2
0.01
1
Q701
KRC104 M
D703
RESET
DS1SS133
3
C707
4.7/25
C708
0.01
1
R745
3
680
IC702
2
PST9127
RESET
+B
+B
+3.3V(USWD)
C711
0.1
17
16
8 6 7 5 4 3 2 1
P36 1 - F~H
2
Figure 38 SCHEMATIC DIAGRAM (7/13)
+B
BASS-SW
DRIVER
R735
4.7K
R715 1K
S_S_MUTE
24
R734 4.7K
R714B 1K
C_S_MUTE
23
R733 4.7K
R713B 1K
F_S_MUTE
22
R756
1K
R757 100K
FAN_LOCK
21
R753 100K
R752
1K
FAN
20
R732 10K
C712
0.0047
PROTECT
19
R712
R746
1K
1K
18
R731
10K
17
+B
+B
-B
+B
PROTECT
R769
1K
SYS_STOP
AC_DETECT
+B
PROTECT
Q703
KTC3199 GR
R748
470K
R749
33K
R751
47K
+B
RLY_+12V
+B
R765
33K
-B
R766
47K
15 14
13
12
11
10 9
6 5
BI804
CNS805
7
TO LIMIT PWB
3
4
– 38 –
GND
CHASSIS
1
C874
0.022
Q829
KRA107 M
1
C859
22/16
BASS-SW
DRIVER
3
2
Q828
3
KRC102 M
1
R852
2.2K
R892
2
1.5K
R893
1M
R873
3.3K
R859
C860
3.3/50
IC813
KIA4558F
D
PRE AMP.
G
R833
270K
S
5
R813
820
R810
6
10K
C840
0.001
7
R827
R814
C842
10K
10K
4
8
100/16
R862
C848
1K
0.022
C846
R864
100K
0.1
-B
+B
2
Q817~Q820: BUFFER
1
Q811~Q816: MUTE DRIVER
3
Q816
KTC3199 GR
KTC3199 GR
D706
R747
DS1SS133
1K
2
R750
10K
1
3
D709
DS1SS133
Q705
KTC3199 GR
FRONT
R-CH
FRONT
L-CH
4
3 2 1
13
12
11
10
9
12
11
10
9
8
6
5 4 3 2
1
CNP805
P44 2 - D
5
SURROND
6
2
8
5
7
R8
R851
R832
3.3
3.3K
3.3K
C837
C826
10/16
10/16
R855
R835
100K
100K
R836
100K
R839
12K
12K
IC812
KIA4558F
PRE AMP.
3
5
3
2
6
2
1
7
1
C841
4
8
10/16
C847
C832
C831
0.022
0.022
0.022
R863
R844
R843
100K
100K
100K
-B
+B
3
3
1
1
2
2
Q815
Q814
Q813
KTC3199 GR
KTC3199 GR
8
7
6
5
7
6
5
4
CNA100
P43 10 - A
TO 1-BIT AMP. PWB
6
C
10
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