Sharp SD-AT50H (serv.man18) Service Manual ▷ View online
– 33 –
SD-AT50H
Figure 33 SCHEMATIC DIAGRAM (4/11)
7
8
9
10
11
12
1
1
1
5
4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
1 3 2
B_LIGHT
RX_IN
POWER_KEY
LCD_SDA
TIMER_LED
LCD_SCL
DTS_LED
LCD_CS
DD_LED
LCD_RESET
DPL_LED
VIR_LED
STD_LED
H.P_SW
STR_LED
KEY1
DSP_SCDOUT
AMP_INT
CCB_DO
FLASH_TXD
FLASH_SCLK
FLASH_BUSY
STR_LED
FLASH_RXD
RESET
FLASH_VCC
S_MUTE
SUB_SP_ON
VOL_DA
PROTECT
BASS_SW
VOL_CL
DVD_POWER
BASS_SW
DSP_UC15
STD_LED
DSP_RESET
DSP_SCDIN
DSP_UC17
TIMER_LED
DTS_LED
DSP_SCCLK
DSP_CS
DD_LED
DSP_UC16
FLASH_EPM
FLASH_CE
AUDITION
POWER_KEY
PROTECT
KEY1
FM_STB
CCB_CE
CCB_DI
CCB_CL
TUNER_SM
DIG_FUNC+B
ROM
SYS_STOP
RESET
SCL
SDA
AMP_SOUT
AMP_SN
AMP_CLK
AMP_STB
B_LIGHT
LCD_RESET
DVD_ON
FLASH_VCC
OVF
KEY_OUT
LCD_SDA
LCD_SCL
LCD_CS
RX_IN
FLASH_BUSY
FLASH_SCLK
FLASH_RXD
FLASH_TXD
S_MUTE
VOL_CL
VOL_DA
DPL_LED
VIR_LED
H.P_SW
DSP_INTREQ
AREA
DSP_ABOOT
_S_MUTE
SUB_SP_ON
+3.3V(UN-SWD)
+3.3V(SWD)
+3.3V(BACK-UP)
+3.3V(UN-SWD)
+3.3V(SWD)
+9V(A)
+9V(A)
+3.3V(SWD)
+3.3V(UN-SWD)
+3.3V(BACK-UP)
CHASSIS
GND(H/P)
L-CH(H/P)
R-CH(H/P)
+3.3V(SWD)
+3.3V(SWD)
+3.3V(BACK-UP)
+3.3V(UN-SWD)
POINT
RESET
P47
P50
P51
P52
P53
P54
P55
P56
P57
P60
P61
P62
P63
P64
P65
P66
P70
P71
P72
P73
P74
P75
P76
P77
P80
P81
P82
BYTE
P97
AVCC
VREF
AN0
AVSS
AN1
AN2
AN3
AN4
AN5
AN6
AN7
P00
P01
P02
P03
P04
P05
P06
P07
P10
P11
P12
P13
P14
P15
P16
P17
P20
P21
P22
P23
P24
P25
P26
P43
P27
VSS
P30
VCC
P31
P32
P33
P34
P35
P36
P37
P40
P41
P42
P44
P45
P46
P67
P83
P85
VCC
XIN
VSS
P84
XOUT
RESET
P86
P87
CNVSS
P90
P91
P92
P93
P94
P95
P96
3
2
1
9
10
11
12
13
14
15
16
17
18
20
21
22
23
24
25
19
8
7
6
5
4
3
2
1
1 2 3 4 5 6
9
8
7
9
8
7
6
5
4
3
2
1
1
2
3
1
2
3
1
2
3
CN502A
P30 5 - B
TO DISPLAY PWB
CN503A
P30 2 - C
TO MAIN PWB
CNS507
P31 12 - D
FROM MAIN PWB
9
1
25
1
DSP PWB-B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
CHASSIS
CNP507
TP300
CN502B
CN503B
S
E
OR
17
C137
1
11
46AW
C118
1
112
33LUS
R331 220
R332 220
R333 1K
R334 1K
R335 1K
R337 1K
R336 1K
R338 1K
R339 1K
R346
10K
R341
10K
R342 1K
R343 1K
R344 1K
R347 1K
R348 1K
R349 1K
R350 1K
R363 1K
R361
1K
R354 1K
R351 1K
R352 1K
R353 1K
R355 1K
R356 1K
C309 0.1
R365 1K
R371 1K
R372 1K
R370 1K
R366 1K
R373 1K
R374 1K
R379 1K
R375 1K
C310
1/50
R396
22K
R398
330
Q303
KRA106 S
R389 1K
R392 1K
R391 1K
R388 1K
R387 1K
R385 1K
R386 1K
R383 1K
R381 1K
R382 1K
R394 1K
R395 1K
R397
1K
C303
0.1
C304
10/16
C301
0.1
C302
100/10
R309 1K
R308 220K
R303 1K
R306 1K
R307 1K
R302 1K
R305 1K
R304 1K
R301 1K
R310 1K
C306
15P(CH)
C307
18P
(CH)
C305
15P(CH)
C308 0.1
XL301
8.38 MHz
R312 1K
R313 820
R311 100K
R317 10K
R318 1K
R320 1K
R323 1K
R326 1K
R325 1K
R328 1K
R329 1K
R330 1K
R412
47K
R406 10K
R407 10K
R413
47K
IC301
IX0563AW
DSP SYSTEM
MICROCOMPUTER
D306
KDS160
D301
KDS160
R404
47K
R405
47K
C320
0.1
IC302
PST9127N
RESET
C319
10/16
R319
680
Q402
KRC104 S
D302
KDS160
C318 0.01
Q401
KRC104 S
C317
4.7/25
C316 0.01
C313
220/6.3
R316 100K
R314
150
R315 150
C314
220/6.3
R414
2.7K
C311 47P(CH)
C312 47P(CH)
R408 2.2K
R400 6.8K
R403 10K
R401
10K
R402
6.8K
D303
KDS160
R399
47K
D307
KDS160
D308
KDS160
R362
10K
R364
10K
FFC503
FFC502
AGE
ATOR
LATOR
D309 DS1SS133
D310 DS1SS133
C170
0.001
SD-AT50H
– 34 –
A
B
C
D
E
F
G
H
1
2
3
4
5
6
• NOTES ON SCHEMATIC DIAGRAM can be found on page 42.
Figure 34 SCHEMATIC DIAGRAM (5/11)
+15V
–15V
3 1
2
3 2
1
2
1
3
AC_DETECT
D_+7.5V
RELAY
DRIVER
GND_(D)
DRIVER
GND(D1)
D_7.5V
GND(A)
A_–15V
A_+15V
POWER
POWER
GND_(A)
A__+15V
A__–15V
+3.7V_(UCON)
GND_(UCON)
AMP_CLK
AMP_SOUT
AMP_INT
AMP_SIN
AMP_STB
CHASSIS
GND
VIN
VOUT
GND
13
11
12
8
1
2
3
4
5
9
7
2
6
5
4
10
3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
1
4
3
2
1
+15V
GND(D2)
–B_CONT
RLY_+12V
+3.3V(USWD)
+3.7V(UCON)
RLY_GND
AC_DETECT
A_–12V
GND(A)
POWER
A_+12V
TIMING_CK
AMP_SOUT
AMP_SIN
AMP_CLK
AMP_STB
AMP_INT
POWER PWB-C(1/2)
1
2
3
+3.7V(UCON)
1
2
3
CNA104
P40 2 - H
TO 1-BIT AMP. PWB
+B
+B
-B
-B
-B
+B
+B
+B
+B
+B
+B
+B
+B
-B
-B
-B
+B
+B
+B
+B
BUFFER
P36 2~4 - H
Q922
KTC3199
R945
33K
R
1
Q924
KTC3199 GR
R936
100K
R929
4.7K
R940
4.7K
R925
2.2K
Q911
KRC106 M
ZD913
DZ3.3BSB
R926
1K
IC911
SE-B2
ERROR
AMP.
C954
330P
R923
1.5K
R924
12K
C927
2200/25
C929
2200/25
L911
3.3
µ
H
C931
1000/25
C932
1000/25
PS904
1.5
Posistor
C949
47/25
IC912
KIA7812AP
VOLTAGE
REGULATOR
C950
0.1
R930
4.7K
R931
100K
Q925
KRC106 M
L915
3.3
µ
H
RL911
C965
0.022
C966
0.022
D920
DS1SS133
C967
0.022
Q919
KTC3199 GR
BI901
CNS901
C956
220/16
CNP901
SYSTEM CONTROL
TERMINAL
R938
100
ZD916
DZ12BSB
ZD915
DZ12BSB
C943
0.022
C944
0.022
R937
100
PS902
1.5
Posistor
PS903
1.5
Posistor
L914
3.3
µ
H
C938
220/25
C937
220/25
L913
3.3
µ
H
PS901
1.5
Posistor
L912
3.3
µ
H
C928
2200/25
C930
2200/25
IC913
S812C37A
3.7V REGULATOR
C958
10/16
C952
0.1
C951
10/16
C934
3300/16
C933
1000/16
– 35 –
SD-AT50H
Figure 35 SCHEMATIC DIAGRAM (6/11)
7
8
9
10
11
12
5
4
2
1
3
2 1
3 2
1
2
3
1
3
AC_DETECT
AC_DETECT
POWER
CHASSIS GND
FB/SYNC
SYNC
OCP
GND
VIN
1
2
3
CHASSIS GND
2
1
4
3
AC POWER SUPPLY CORD
+B
-B
+B
+B
+B
+B
When Servicing, pay attention as the
area enclosed by this line ( ) is
directly connected with AC main voltage.
area enclosed by this line ( ) is
directly connected with AC main voltage.
R918
39K(2W)
R901
33K(2W)
C918
3300
T901
SWITCHING POWER TRANSFORMER
D924
1N4004S
R950
10K
C961
0.0056
R951
33K
C963
0.018
(ML)
Q923
KTC3199 GR
C962
560P
D915
EK19
C924
0.0047
D913
SF10SC9
D914
EK19
C923
0.0047
C935
1000/25
C922
0.01
R952
10K
C936
1000/25
R927
6.8K
R946
4.7K
ZD912
DZ5.6BSB
C957
220/25
ZD911
DZ9.1BSB
R947
4.7K
C959
1/50
Q918
KTC3199 GR
Q922
KTC3199 GR
R945
33K
R928
100K
Q924
3199 GR
R936
100K
R929
4.7K
F901
T3.15A L 250V
SO901
AC SOCKET
AC 230 V, 50 Hz
C901
0.1
R915
390K(1/2W)
VA901
10V471K
L901
AC LINE
FILTER
L902
AC LINE
FILTER
C903
0.001
C902
0.001
C904
0.0022
C905
0.1
C908
0.0022
C909
0.0022
D901
D5SB60
C907
0.0022
C906
0.0022
C910
180/400
TH901
R909
47K(2W)
C911
0.001
C917
0.01
C916
0.01
R912
0.18
(2W)
R911
0.18(2W)
R910
220
ZD904
DZ20BSC
D902
D1NL20U
R905
4.7K
R903
10
D903
D1NL20U
ZD902
DZ36BSD
R904
15K
R917
22(1/2W)
ZD901
DZ20BSB
Q901
2SD1616 A
R906
3.3K
D905
D1NL20U
C913
820P
D904
D1NL20U
C919
33/35
R953
150K
C915
4.7/50
R907
1.5K
C914
0.0047
D907
SARS03
IC901
STRF6267
SWITCHING REGULATOR
R949
15K
Q920
KTC3199 GR
Q921
KRC106 M
D921
D1NL20U
R932
3.9K
(1/2W)
BT148
TRS901
D916
EU02A
D919
D1NL20U
D923
D1NL20U
R934
1K
(1/2W)
C960
0.0015
(ML)
R935
1.5K
R933
3.3K(1/2W)
C926
22/50
D918
D1NL20U
D917
D1NL20U
C921
0.01
D911
SF10SC9
D912
EK19
R939
680
D922
D1NL20U
PC901
PC123FY8
R921
2.7K
D906
D1NL20U
C912
220P
R908
1M
SD-AT50H
– 36 –
Figure 36 SCHEMATIC DIAGRAM (7/11)
A
B
C
D
E
F
G
H
1
2
3
4
5
6
• NOTES ON SCHEMATIC DIAGRAM can be found on page 42.
8
4
8
4
32 31 30 29 28 27 26 25
16
15
14
13
12
11
10
9
2
1
1
2
3
4
5
6
7
8
17
17
18
24
18
19
20
21
22
23
24
1
2
3
5
6
7
1
2
3
5
6
7
3
+B_CHECK
PROTECT
PROTECT
+3.3V(USWD)
OFFSET
GND
CENTER
SUBWOOFER
A/D_RESET
OFFSET
A/D_RESET
PROTECT
PROTECT
RESET
AMP_SIN
FAN
AC_DETECT
BASS-SW
OFFSET
SYS_STOP
W_S_MUTE
FAN_LOCK
F_S_MUTE
S_S_MUTE
C_S_MUTE
RLY_+12V
AMP_INT
AMP_INT
AMP_SOUT
AMP_CLK
A/D_RESET
BASS-SW
SP_RLY
–B_CONT
POWER
TIMING_CK
AMP_STB
RLY_+12V
SYS_STOP
AC_DETECT
PROTECT
S_S_MUTE
C_S_MUTE
W_S_MUTE
GND
CHASSIS
RESET
TEST
POINT
SURROND
D0
P1-3
P1-2
P1-1
P1-0
PO-3
PO-2
PO-1
PO-0
Ain3/CMPO+
Ain2/CMPO–
Ain1/CMPO+
Ain0/CMPO–
P3-1/NT1
P3-0/NTO
VDCE
VDD
Vss
Xin
Xout
CNVss
RESET
P2-2/Sin
P2-1/Sout
P2-0/SCK
D7/CNTR1
D6/CNTR0
D5
D4
D3
D2
D1
SUBWOOFER
GND
CENTER
SURROND GND
SURROND R-CH
SURROND L-CH
GND
R-CH
L-CH
CENTER
SUB
WOOFER
POINT
5
6
7
8
9
10
11
12
13
2
6
4
5
6
7
8
9
10
11
12
8
7
5
1
+
–
–
VDD
VSS
+
–
–
+
+
VSS
VDD
+3.3V(USWD)
+3.7V(UCON)
A_+12V
A_–12V
GND(A)
TIMING_CK
–B_CONT
POWER
GND(D2)
+15V
AC_DETECT
RLY_+12V
AMP_CLK
AMP_INT
AMP_STB
AMP_SOUT
AMP_SIN
RLY_GND
POWER PWB-C(2/2)
G
S
D
1
2
3
1
2
3
1
2
3
1
3
2
1
3
2
1
1
3
2
3
2
18
17
16
15 14
13
12
11
10 9
6 5 4
9 8 7
3 2 1
4
5
6
7
3 2
1
8 6 7 5 4 3 2 1
CNA100
P41 10 - A
TO 1-BIT AMP. PWB
CNP805
P42 2 - D
TO LIMIT PWB
+B
+B
+B
+B
+B
+B
+B
+B
-B
-B
-B
-B
+B
+B
+B
+B
+B
+B
+B
+B
FRONT L-CH
FRONT R-CH
SURROUND L-CH
SURROUND R-CH
RESET
Q817~Q820: BUFFER
Q811~Q816: MUTE DRIVER
Q811~Q816: MUTE DRIVER
BASS-SW
DRIVER
BASS-SW
DRIVER
P34 1 - F~H
C874
0.022
R740
10K
R701
1K
R720
1K
R719 1K
R716 1K
R737 100K
R736 4.7K
R717
1K
R739 4.7K
R755 100K
R762 47K
R759 10K
R761
1K
R758
1K
R754
1K
R738 100K
R770 100K
R705
1K
R707
1K
R725
100K
R709
1K
R708
1K
R724
10K
R727
4.7K
R726
100K
R723
8.2K
R704
1K
R703
1K
R706
1K
XL701
2 MHz
C703 100/10
C704 0.022
R768
330
L701
2.2
µ
H
R711
1K
R730 4.7K
R764 47K
R763
1K
R731
10K
R741 39K
R746
1K
D705
DS1SS133
R713B 1K
R715 1K
R734 4.7K
R714B 1K
R733 4.7K
R753 100K
R757 100K
R732 10K
C712
0.0047
R752
1K
R756
1K
R712
1K
R735
4.7K
IC701
IX0564AW SYSTEM
MICROCOMPUTER
C706
0.01
D703
DS1SS133
C708
0.01
IC702
PST9127
RESET
R745
680
C711
0.1
R765
33K
R766
47K
R751
47K
R749
33K
D708
DS1SS133
Q704
KRA106 M
Q705
KTC3199 GR
D709
DS1SS133
D707
DS1SS133
Q703
KTC3199 GR
R748
470K
R750
10K
R747
1K
D706
DS1SS133
D710
DS1SS133
R769
1K
C850 47/25
C851 47/25
L803
Q816
KTC3199 GR
R866 3.3K
Q818
KRA107 M
R865 3.3K
Q817
KRA107 M
Q815
KTC3199 GR
R846 3.3K
Q814
KTC3199 GR
Q813
KTC3199 GR
R845 3.3K
Q820
KRA107 M
IC813
KIA4558F
PRE AMP.
C859
22/16
R873
3.3K
R893
1M
R892
1.5K
R852
2.2K
Q828
KRC102 M
Q829
KRA107 M
C826
10/16
R832
3.3K
R855
100K
C837
10/16
R851
3.3K
R827
10K
R814
10K
D819
DS1SS133
C860
3.3/50
R828 5.6K
R813
820
R809
22K
Q859
CPH3418
C846
0.1
C842
100/16
R862
1K
R810
10K
C840
0.001
R860 18K
R863
100K
R864
100K
C847
0.022
C848
0.022
R859
12K
C839
33P
R861
1K
C841
10/16
R857 22K
R842
1K
C832
0.022
C830 10/16
R844
100K
R838 22K
R840 12K
C828 33P
IC812
KIA4558F
PRE AMP.
R839
12K
R835
100K
R836
100K
C
10
R8
3.3
R843
100K
R841
1K
C829 10/16
R837 22K
C827 33P
C831
0.022
R833
270K
L802
Q701
KRC104 M
R744
100K
C707
4.7/25
D701
DS1SS133
BI804
CNS805
C970
0.01
FM SIGNAL
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