Onkyo HT-R508 Service Manual page 15

A
SCHEMATIC DIAGRAMS-3
DSP SECTION
<Note>
NC = No mount of parts.
SD-Z : XY
1
Location of connected terminal in schematic diagrams.
SD-Z = Schematic diagrams-Z. X = A to H, Y = 1 to 5.
NAETC-8781
U03
THERMAL SENSOR
PC BOARD
THERMAL
+5VDIS
GNDDG2
2
To NAAF-8779(1/2)
(SD-1 : D1)
To NAAF-8779(1/2)
(SD-1 : C1)
3
To NAAF-8779(1/2)
(SD-1 : B1)
4
NOTE
THE COMPONENTS IDENTIFIED BY MARK
REPLACE ONLY WITH PART NUMBER SPECIFIED.
VOLTAGE (MEASURED WITH VOLTMETER)
ALL PNP TRANSISTORS ARE EQUIVALENT TO 2SA1015-GR UNLESS OTHERWISE NOTED.
ALL NPN TRANSISTORS ARE EQUIVALENT TO 2SC1815-GR UNLESS OTHERWISE NOTED.
ALL DIODES ARE EQUIVALENT TO 1SS133 UNLESS OTHERWISE NOTED.
ELECTROLYTIC CAPACITORS (
ALL CAPACITORS ARE IN pF/50WV UNLESS OTHERWISE NOTED.
EX) 030- 3pF 330- 33pF 331- 330pF 333- 0.033uF
ALL RESISTORS ARE IN OHMS 1/4WATTS UNLESS OTHERWISE NOTED.
THE THICK LINES ON PC BOARD ARE THE PRINTING SIDE OF THE PARTS.
EX) PRINTING SIDE
5
CIRCUIT IS SUBJECT TO CHANGE FOR IMPROVEMENT.
B
To NADIS-9148
(SD-4 : H1)
P701A
THERMAL
+5VDSP
GNDDG
C107 104Z
C106 104Z
1 AMUT
2 VOLH
3 SEC1H
4 PROTECT
5 VOLCLK
6 VOLDAT
7 GNDDG
8 +12VA
9 -12VA
10 GND+12V
11 DAC_CT
12 DAC_SW
13 DAC_FL
14 DAC_FR
1
2
3 DAC_SL
4 DAC_SR
5 LTAD
6 RTAD
7 MICOUT
8 V3_R
9 GNDV4
10 V3_L
11 TU_R
12 GNDTU
13 TU_L
14 RI
3
2
1
Q411, 412, 431 - NJM4580M-D
R572
0
R542
22K
6 6
7
7
Q421:A
5 5
TP17
Q431:A
3 3
TP16
1 1
2 2
Q431:B
Q421:B
NC
R541
22K
R571
0
!
ARE CRITICAL FOR SAFETY
IS DC VOLTAGE.(NO INPUT SIGNAL).
) ARE IN uF/WV.
FRONT Lch
FRONT Rch
DIGITAL
C
To TUNER UNIT
P101A
R591 22 (1/2W)
R592 22 (1/2W)
C591 + 220/25
C592 220/25
+
R492
10K
R512 R502
22K 1.5K
R482
6
7
10K
5
C442
471J
C432
Q411:A
122J
C431
122J
C441 3
471J
1
R481
2
10K
R511 R501 Q411:B
22K 1.5K
R491
10K
TP13 7
Q403:A
Q403:B
TP12 1
TP11 7
Q402:A
Q402:B
TP10
1
TP09 7
Q401:A
Q401:B
TP08 1
WF10
TP08
To NAVD-9178(1/2)
(SD-5 : E1)
P2004A
GNDV4V
VCSCL R715 0
R716 0
+
+
R748
2.2(1/2W)
Q742
BD7820
1SS355
D742
6.8K R742
Q741
RL1N4003
6.8K R743
SI8008TM
D744
L741
+4.1V +3.5V
1 2
VIN SW
NCH-2541
5 4
SS VADJ 470K
GND
1SS355
D743
Q746 TA48033AF
1 I
Q341 : NJM4580M-D
C341 101J
R351 10K
R341
C324
R324
2
10/50 56
1 +
10K
3
C323
Q341:B R323
10/50 56
+
+
C322 R322
Q341:A
10/50 56
5
7 +
R342
6
C321 R321
10/50 56
10K
R352 10K
C342 101J
Q401- Q404 : NJM4580M-D
C426 R456 R436 R416
4.7K
681J 470 3.3K
6
R476 180
C406
R466 180 472J
5
C104
C416
R426 R406
R446 104Z
681J
4.7K 470 3.3K
C306
C415
R445 R425 R405 + 47/25
681J
4.7K 470 3.3K
C307
3
104Z
R465 180
C405
180 +
R475
2 472J C308
100/10
C425 R455 R435 R415
681J 4.7K 470 3.3K
C424 R454 R434 R414
C309
4.7K 470 3.3K
153J 104Z
6
R474 180 C404
R464 180
333J
5 SR-
SR+
C414
R444 R424 R404
153J 3.3K
4.7K 470 SL+
C413 R423 R403 SL-
R443
681J 4.7K 470 3.3K
3 FR-
FR+
R463 180 C403
180 472J
2 R473
+
C423
R453 R433 R413
681J 3.3K
4.7K 470
C422 R452
R432 R412 SW-
681J 4.7K 3.3K
470
6
SW+
R472 180 C402
180
R462 472J
5 C-
C412 C+
R442 R422 R402
681J 470
4.7K 3.3K
C411
R441
R421 R401
681J
4.7K 470 3.3K
3 FL+
R461
180 C401
R471 180
472J
2 FL-
C421
R451 R431 R411
681J 3.3K WF09
4.7K 470
HT-R508
D
T
To NAVD-9178(2
(SD-6 :E3)
P2005A
C628 104Z
C629 104Z
R745
39K
R744
1.2VDS
0
R746 39K
3 +3.3V
O
LBC
Q171
C171
TC7WU04FU 104Z +3
1 8
VD
2 7
3 6
4 5
GND
R171 1M
24.576MHz
X171
C316
221J
17 VQ
18 FLT+
19
REFGND
20
AOUTB4- SA
21
CX_SDIN2 : 64
AOUTB4+ SA
22
CX_SDIN3 : 63
AOUTA4+
23
CX_SDIN4 : 62
AOUTA4-
24
Q301
VA
25
AGND1 CS42518-CQ CX_
26
AOUTB3-
27 DIR/DAC/ADC
AOUTB3+ SAI_
28
AOUTA3+ 31 : AOUTB2+ TXP : 50
29 AOUTA3-
32 : AOUTA2+ RXP0 : 49
30 AOUTB2-
31
32
+5.0V
C333 330J
C334 330J
C336 330J
C337
330J
L303, 304 : LBC2518T4R7M