Sharp SD-AT50 Service Manual page 37

1-bit digital home theater
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D1NL20U
Q921
KRC106 M
3
2
1
R945
R949
33K
15K
Q922
KTC3199 GR
+B
Q924
3199 GR
R928
100K
Q918
R936
KTC3199 GR
100K
AC_DETECT
R929
4.7K
POWER
C936
1000/25
R952
10K
R951
33K
AC_DETECT
+B
7
R921
+B
2
1
3
D916
D911
EU02A
SF10SC9
C921
BT148
0.01
TRS901
D917
D1NL20U
R935
1.5K
D921
D918
D1NL20U
R932
D919
C926
3.9K
D1NL20U
22/50
(1/2W)
R933
3.3K(1/2W)
D923
D1NL20U
R934
1K
(1/2W)
C960
0.0015
(ML)
+B
D912
EK19
ZD911
R947
R946
4.7K
DZ9.1BSB
4.7K
R927
6.8K
C959
ZD912
C957
220/25
1/50
DZ5.6BSB
D922
D913
D1NL20U
SF10SC9
R939
1
680
-B
3
2
C922
0.01
D914
EK19
C935
1000/25
C923
0.0047
C924
0.0047
D915
D924
EK19
1N4004S
+B
Q923
KTC3199 GR
R950
SWITCHING POWER TRANSFORMER
10K
C963
0.018
(ML)
C962
C961
560P
0.0056
8
Figure 37 SCHEMATIC DIAGRAM (6/13)
2
3
PC901
PC123FY8
2.7K
1 4
C918
0.01
D902
D1NL20U
R903
10
D903
D1NL20U
R905
4.7K
ZD902
DZ33BSD
R904
18K
R912
R913
0.12
0.1(2W)
(2W)
C916
0.01
C917
0.01
T901
CHASSIS GND
9
10
– 37 –
R901
47K(2W)
R902
47K(2W)
3
D907
2
SARS03
1
D904
ZD901
DZ20BSB
D1NL20U
Q901
C915
R953
2SD1616 A
4.7/50
150K
C919
33/35
R917
R906
R907
3.3K
22(1/2W)
1.5K
D905
D1NL20U
C914
0.0047
C913
0.0018
D906
D1NL20U
C912
ZD904
DZ20BSC
220P
R910
R911
220
0.22(2W)
C909
0.0022
C908
0.0022
C905
0.1
L902
AC LINE
FILTER
C902
C903
0.001
0.001
L901
AC LINE
FILTER
VA901
10D271K
R915
390K(1/2W)
C901
0.1
F901
6A/125V
SO901
AC INLET
AC 120 V, 60 Hz
AC POWER SUPPLY CORD
11
SD-AT50
3
4
VIN
5
FB/SYNC
R919
2.7K
OCP
1
SYNC
C911
0.0047
2
GND
R909
20K(2W)
D901
D5SB60
TH901
1.5
C910
R908
820/200
1M
C907
0.0022
C906
0.0022
R914
4.7M(1/2W)
C904
0.0022
CHASSIS GND
12

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