Block Diagram - Sharp SD-AT1000 Service Manual

1-bit digital home theater
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SD-AT1000
R-CH
1
A_GND
3
L-CH
4
D_GND
5
H.P SW
6
RIN
3
LIN
4
ROUT1
5
LOUT1
6
ROUT2
7
LOUT2
8
ROUT3
9
LOUT3
10
D_+5V
+B
13
PROTECT
1
L_MUTE
27
W_S_MUTE
26
F_S_MUTE
25
C_S_MUTE
24
S_S_MUTE
23
S_MUTE
22
FUN_LOCK
21
PROTECT
20
+B_CHECK
19
18
17
A/D_RESET
16
OFFSETPROTECT
15
CCB_CE
14
CCB_DO
13
CCB_CL
12
CCB_DI
11
P_CONT_LEVEL
10
H.P_SW
9
VOL_DA
8
VOL_CL
7
BASS_SW
6
CONFIG
5
9V
A_+9V
4
D_+5V
3
GND(U-COM)
2
UCON5V
1
CNP501
A_+9V
A_+9V
11
PROTECT
R_CH
1
1
A_GND
2
2
L_CH
3
3
D_GND
4
4
H.P SW
5
5
CONFIG
Q528
Q501
SW
CENTER
25
IN DSPSR
26
IN DSPSL
27
INDSPC
28
IN DSPSW
29
AGND1
32
AGND2
35
OUTSW
36
OUTC
37
OUTSL
38
OUTSR
AGND3
D537
D538
Figure 12 BLOCK DIAGRAM (1/10)
JT501
LINE1 INPUT/
OUTPUT TERMINAL
Q502
24 23 22 21
19
17
16
15
14
13
11
10
9
8
7
4
3
2
1
IN2MIX
IN31
IN22
IN21
IN12
IN11
ROUT32
ROUT31
IC501
BD3811K1
VOLUME IC
AGND10
AGND9
41
44 45 46 47
48 49 50 51 52 53 54 55
57
– 12 –
MON_OUTL
5 6 7 8
IC520
TJM4558CD
+
+
+12V
OPE AMP.
4 3
1
80
79
TUN_R
78
TUN_L
77
76
75
70
67
JT502
LINE2/LINE3
INPUT TERMINAL
L_
Q533
Q531
Q532
+12V
Q504
5 6
7 8
IC505
+
NJM4565M
– +
BUFFER AMP.
4 3 2
1
Q503
Q599
Q598
OUTSR_LCH
OUTSR_RCH
OUTC
OUTSW

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