Sharp HT-DP4000 Service Manual page 15

X451
8MHz
R465
1M
2.3V
C 32
2.1V
C 31
5.2V
C476 220/16
D 30
4.7V C473 0.082
D 29
4.7V C474 0.0033
S 28
4.7V C475 0.082
A 27
C472 0.47/50
4.7V
UT 26
C471 0.33/50
4.7V
T 25
4.6V C468 10/50
T 24
4.6V C470 10/50
T 23
4.7V C469 10/50
T 22
0V
D 21
0.8V R464 39K
EF 20
1.5V C467 2.2/50
T 19
9.5V
C 18
C466
17
220/16
R471 100K
R463
18K
R472 100K
R469 100K
R470 100K
+B
D451 D452
1N4004 1N4004
C537
1/50
4 33
C539 10/50
4.6V
32
LFCOM
4.6V C541 2.2/50
31
LFOUT
4.6V C543 1/50
30
LRIN
C545 10/50
4.5V
LRCOM 29
C547 2.2/50
4.6V
LROUT 28
4.6V
LVREF 27
0V
VSS 26
0V R528 1K
CE 25
R529 1K
0V
DI 24
R530 1K
0V
CL
23
C553 47/16
4.6V
VREF
22
4.6V
RVREF 21
C548 2.2/50
4.6V
20
RROUT
C546 10/50
4.6V
RRCOM 19
C544 1/50
4.5V
RRIN 18
C542 2.2/50
4.6V
RFOUT 17
RFCOM
5 16
C540
10/50
8
0
7
+B
330/16
+B
R581
2.2K
R583
22K
R584
22K
R582
2.2K
+B
R571
+B
R572
R555C
R554C
+B
R561
2.2K
C551
R563
100K
47/16
R564
100K
V_LATCH
V_DATA
V_CK
C552 R562
2.2K
47/16
R555B 220
R550
R554B
15K
220
+B
+B
8 9
Figure 15 SCHEMATIC DIAGRAM (2/7)
Q531
C2878 B
H-MUTE
R531
4.7K
R532
22K
C554
R533
4.7K Q532
C2878 B
H-MUTE
R587 C583
3.9K 47P
R589
R585
27K
1K
C585 C587
0.022 10/16
4 3 2 1
C581 10.9V
220P
IC581
NJM4558D
BUFFER
C582
220P -10.7V
5 6 7 8
C586
0.022
R586
C588
C584
1K
47P 10/16
R588
C570
3.9K 47/16
C569
47/16
C577
R600
2.2/50
2.2K 1K
C578
R598
2.2/50
2.2K 1K
220
R567 C569C
8.2K 47/16
220
R569
R565
R596
27K
1K
3.3K
C565
0.022
C567
4.7/50
10.1V 4 3 2 1
C561
220P
IC561
NJM4558D
BUFFER
C562
220P
-9.9V
5 6 7 8
C566
0.022
R566 R594
C568
R568
1K
4.7/50 3.3K
8.2K
C564
47P
C570C
C569B
47/16
47/16
C430
47P
0V
R433
4 3 2 1
10.1V C431 47K
0.0068
R440
IC431 C428
10K
4.7/50
NJM4558D
R434
BUFFER
1K
R435
R430 -9.9V
5 6 7 8
0V
56K
47K
R432
R438
5.6K
150K
R436 C427
C432
C435
330P
10/50 47K
2.2/50
R437 C429
100K 0.056
C436
C434 C433 C570B
0.022
47P 0.022 47/16
10
– 15 –
HT-DP4000
SP_LEVEL
16
PROTECT P16 6-H
15
D_GND
17
A+12V
19
A_GND
P16 6-H
18
A-12V
20
J581
HEADPHONES
BI581
1 1
1
R591
2 2
2
100
3 3 3
4 4
4
R592
5 5
5
100
CNP581
HEADPHONES
PWB-C4
FRONT_L
1
FL_GND
2
F_MUTE
3
FRONT_R
4
FR_GND
5
C_MUTE
11
P16 1-D
CENTER
9
C_GND
10
R_MUTE
14
REAR
12
R_GND
13
SW_MUTE
8
CNP5
TO DISPLAY PWB
P19 12-B
1
CNW5
2
3
SW
6
SW_GND P16 1-D
7
11 12