Sharp HT-DP3000 Service Manual page 11

X451
8MHz
35 34 33
37 36
R465
1M
2.3V
OSC 32
2.1V
OSC 31
C476
5.2V
VDD 30
220/16
4.7V C473
A/D 29
0.082
C474
4.7V
NS
28
0.0033
4.7V
C475
D/A
27
0.082
4.7V C472
26
DC-OUT
0.47/50
4.7V C471
25
DC-OUT
0.33/50
4.6V
C468
GIC
L-OUT 24
10/50
4.6V C470
R-OUT 23
10/50
4.7V C469
22
S-OUT
10/50
0V
GND
21
0.8V R464
IREF 20
39K
1.5V C467
DET 19
2.2/50
9.5V
VCC 18
17
C466
220/16
2 13 14 15 16
R471 100K
R463
18K
R472 100K
C465
220/16
R469 100K
R470 100K
D452
D451
1N4004 1N4004
C535 C537
1/50
0.0033
40 39 38 37 36 35 34 33
2 41
4.6V
32
4.6V
31
4.6V
32 LFCOM
30
4.5V
31 LFOUT
LRCOM 29
4.6V
30
LRIN 28
LROUT
4.6V
LVREF
27
0V
VSS
IC501 26
R528 1K
0V
CE
25
LC75396N
R529 1K
0V
DI 24
PROCESSOR
R530 1K
0V
CL
23
4.6V
VREF 22
4.6V
RRCOM
1 9
RVREF 21
4.6V
RRIN
1 8
RROUT 20
4.6V
RFOUT
1 7
19
4.5V
18
4.6V
17
C542
2.2/50
7 8 9 10 11 12 13 14 15 16
526
C540
C536
.039
10/50
0.0033
7
+B
+B
–B
R553
4.7K
+B
+B
R555C 220
C539
+B R554C 220
10/50
C541
2.2/50
C543
1/50
C545
10/50
C547
C551
2.2/50
47/16
V_LATCH
V_DATA
V_CK
C553 C552
47/16 47/16
C548
2.2/50
C546
10/50
R555B
C544
220
1/50
R554B R550
220 15K
–B
+B
8 9
Figure 11 SCHEMATIC DIAGRAM (2/7)
Q531
2SC2878 B
R532
22K
R531
R587
C554
4.7K
330
3.9K
R581
R585
C585
2.2K
1K
0.022
C587
10/16
10.9V
R583 C581 4 3 2 1
22K 220P
IC581
BA4558
R584
C582
22K
220P
5 6 7 8
R586 C584
R582
1K 47P
2.2K
C588
10/16
R588
3.9K C570
Q532
47/16
2SC2878 B
C569
R600
47/16
R571
C577
2.2K
2.2/50
R598
R572
C578
2.2K
2.2/50
C569C
47/16
R567
8.2K
+B
R569
R596
R561 R565
27K
2.2K 3.3K
1K
C565
0.022
4 3 2 1
R563 C561 10.1V
100K 220P
IC561
NJM4558D
C562
R564
220P
100K
5 6 7 8 –9.9V
C566
0.022
R566
C568
1K
4.7/25
R562
2.2K
R568
+B
8.2K
C570C
C569B
47/16
47/16
C430
47P
R433
C431
47K
4 3 2 1 6800P
R434
IC431
4.7/25
1K
NJM4558D
R435
R430
5 6 7 8
47K
56K
–9.9V R432
0V 0V 0V
R436
C432
C435
47K
10/50
2.2/50
+B
R438
150K
C429
C436
R437
0.056
0.022
100K
C434 C433 C570B
0.022
47P 47/16
10
– 11 –
HT-DP3000
SP–LEVEL
16
PROTECT
15
D–GND
17
A+12V
19
A–GND
18
–B
A-12V
20
5
5 5
4 4 4
3
3 3
R591
2 2 2
100
1 1 1
R592
100
HEADPHONES
PWB-C4
1K
FRONT–L
1
FL– GND
2
F–MUTE
3
1K
FRONT–R
4
FR–GND
5
C–MUTE
11
CENTER
9
C–GND
10
R_MUTE
14
REAR
R594
12
3.3K
R–GND
13
SW–MUTE
8
1
2
C428
R440
3
10K
CNP5
SW
6
5.6K
C427
330P
SW_GND
7
11
J581
HEADPHONES
12