Service manual
HT-DP2500W
– 13 –
7
8 9 10 11 12
Figure 13 SCHEMATIC DIAGRAM (2/7)
FAN_SW
R550
15K
R430
56K
5
26
0
39
C525
0.039
R554C
220
R555C
220
C569C
47/16
R554B
220
R555B
220
C569B
47/16
C570B
47/16
C570C
47/16
R594
3.3K
R596
3.3K
R598
1K
R440
10K
R432
5.6K
C427
330P
R475
1K
R476
1K
1K
C433
0.022
C434
47P
R600
1K
C428
4.7/50
C429
0.056
R433
47K
C430
47P
R436
47K
R437
100K
C432
10/50
R435
47K
R434
1K
C431
0.0068
R438
150K
IC431
NJM4558D
C435
2.2/50
C436
0.022
R586
1K
R585
1K
C554
330/16
C582
220P
C581
220P
R583
22K
R584
22K
R582
2.2K
C583
47P
IC581
NJM4558D
R589
27K
C587
10/16
R587
3.9K
R532
22K
R531
4.7K
R566
1K
R565
1K
C561
220P
R564
100K
C562
220P
R563
100K
R561
2.2K
R572
2.2K
R571
2.2K
C565
0.022
R567
8.2K
C568
4.7/25
R568
8.2K
C564
47P
C567
4.7/50
C578
2.2/50
C577
2.2/50
C563
47P
IC561
NJM4558D
R569
27K
R570
27K
R562
2.2K
R581
2.2K
R552 56K
R553 56K
R551 56K
IC501
C
75396N
PROCESSOR
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
R470 100K
R469 100K
R472 100K
R471 100K
R529 1K
C545
10/50
C539
10/50
X451
8MHz
R461
1K
R460
1K
R459
1K
D452
1N4004
D451
1N4004
R463
18K
C465
220/16
G
IC
R465
1M
C553
47/16
C541
2.2/50
C542
2.2/50
C535
0.0033
(ML)
C543
1/50
C537
1/50
C544
1/50
C546
10/50
C551
47/16
C536
0.0033(ML)
C538
1/50
C540
10/50
C547
2.2/50
C548
2.2/50
R528 1K
R530 1K
C552
47/16
SW–MUTE
R–MUTE
C–MUTE
F–MUTE
SW
V–MUTE
REAR
CENTER
FRONT_R
D_GND
SW_MUTE
H/P–SW
V–CK
V–DATA
V–LATCH
F_MUTE
FRONT_L
C_MUTE
R_MUTE
A-12V
A_GND
A+12V
SW_GND
R_GND
C_GND
FR_GND
FL_GND
AC-GND
L-IN
R-IN
S-IN
VCC
DET
IREF
GND
S-OUT
R-OUT
L-OUT
DC-OUT
DC-OUT
D/A
NS
A/D
VDD
OSC
OSC
VSS
CLK
DATA
ENABLE
DATA
LF4C3
LF4C2
LF4C1
LF3C3
LF3C2
LF3C1
LF5
LTOUT
LFIN
LFCOM
LRIN
LRCOM
VSS
CL
DI
CE
LVREF
VREF
RVREF
RROUT
RRIN
RFOUT
RFCOM
RFIN
RTOUT
RF5
RF4C3
RF4C2
RF4C1
RF3C3
RF3C2
RF3C1
3940
41
2
38
37
36
35
34
33
9
10 11
12 13
14 15
16
8
8
7
6
5
4 3 2 1
8
7
6
5
4 3 2 1
8
7
6
5
4 3 2 1
2
13 14 15 16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33 34 35
36
7
CNP5
1
2
3
C586
0.022
C585
0.022
0V
0V
0V
0V
0V
–10.7V
10.9V
0V
C569
47/16
C570
47/16
R588
3.9K
C584
47P
R590
27K
C588
10/16
C566
0.022
0V
0V
0V
0V
0V
0V
10.1V
–9.9V
0V
0V
0V
10.1V
–9.9V
0V
0V
0V
4.7V
C476
220/16
C473
0.082
C474
3300P
C475
0.082
C472
0.47/50
C471
0.33/50
C468
10/50
C470
10/50
C469
10/50
4.7V
4.7V
4.6V
4.6V
4.7V
0V
0.8V
1.5V
9.5V
R464
39K
C467
2.2/50
C466
220/16
DELAY-OUT
4.7V
4.7V
4.6V
4.7V
4.3V
0V
4.3V
0V
4.7V
4.7V
5.2V
2.1V
V_LATCH
V_DATA
V_CK
4.6V
4.6V
4.6V
4.5V
4.6V
4.6V
0V
0V
0V
0V
4.6V
4.6V
4.6V
4.6V
4.5V
4.6V
4.6V
4.1V
4.6V
4.6V
4.6V
4.6V
2.4V
4.5V
4.6V
2.4V
4.6V
2.6V
4.6V
2.6V
2.4V
4.6V
4.6V
4.5V
4.7V
2.3V
+B
+B
–B
+B
5
4
3
2
1
BI581
–B
1
2
3
4
5
9
11
10
14
12
13
8
6
7
+B
+B
+B
+B
+B
–B
R592
100
R591
100
CNP581
5
4
3
2
1
20
19
18
12
16
15
5
4
3
2
1
CNS581
P14 6-H
J581
HEADPHONES
HEADPHONES
PWB-C4
FROM DISPLAY PWB
P17 12-B
P14 1-D
P14 1-D
CNS5
PRO–CK
PRO–DI
PRO–ENA
PROTECT
SP_LEVEL
+B
RRCOM
LFOUT
LROUT
Q531
2SC2878 B
Q532
2SC2878 B
21
R533
4.7K
H-MUTE
H-MUTE
IC581
NJM4558D
HEADPHON AMP.
IC561
NJM4558D
BUFFER
IC431
NJM4558D
LOW PASS FILTER AMP.
0V
0V
0V
0V
0V
(0.7V)
0V
(0.7V)
POSISTOR
+B