Onkyo TX-SR505 Service Manual page 11

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 DAC_SBL
2 DAC_SBR
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
R572
0
Q411, 412, 431 - NJM4580M-D
R542
22K
7 6 6
7
5 5
TP17
Q431:A
Q431:B
3 3
TP16
1 1
2
NC
R541
22K
R571
0
!
ARE CRITICAL FOR SAFETY
IS DC VOLTAGE.(NO INPUT SIGNAL).
) ARE IN uF/WV.
FRONT Lch
FRONT Rch
DIGITAL
Refer to following table about the parts displayed by mark " LIST ".
MODEL & TYPE R103
TX-SR505E MPP, MPB 39(1W)
TX-SR505 MDD, MDC 47(1W)
MGK, MGQ, MWT, MWO
To TUNER UNIT
P101A
R591 22 (1/2W)
R592 22
(1/2W)
C591
220/25
+
C592 220/25
+
R492
Q421:A
10K
R512 R502 R482
6
7
22K 1.5K 10K
5
C442
471J
C432
Q411:A
122J
TP15
C431
122J
Q411:B
C441
3
471J
1
R511 R501 R481
2 2
1.5K 10K
22K
R491
Q421:B
TP14
10K
TP13
TP12
TP11
TP10
TP09
WF10
TP08
TX-SR505/505E
C
R104 R106, R107
0 NC
To NAVD-9178(1/2)
NC 0
(SD-5 : E1)
P2004A
GNDV4V
VCSCL
R715 0
R716 0
+
+
R748
2.2(1/2W)
Q742
BD7820
1SS355
D742
R742 6.8K
SI8008TM RL1N4003
R743
6.8K
Q741 D744
L741
+4.1V +3.5V
1 2
VIN SW
470K
5 4
SS VADJ
GND
1SS355
D743
Q341 : NJM4580M-D
C341 101J
R351 10K
R341
C324
2
10/50 R324
1
10K +
3
56
Q341:B C323 R323
10/50 +
56
+
R322
C322
Q341:A
56
10/50
5
R321
7 +
R342
6
C321 56
10/50
10K
R352 10K
C342 101J
Q401- Q404 : NJM4580M-D
R478 R438 R418
6 SBR-
7
180 470 3.3K
R468 R428 R408
5 SBR+
180 470 3.3K
Q404:A
R427 R407
R467
Q404:B 3 SBL+
1
180 470 3.3K
R477 R437 R417
2 SBL-
180
470 3.3K
R476 R436 R416
6
7 470 3.3K
180
R466 R426 R406
5
180
470 3.3K
Q403:A
Q403:B R465 R425 R405
3
1
180 470 3.3K
R475 R435 R415
2
180
470 3.3K
R474 R434 R414
6
7
180 470 3.3K
R464 R424 R404
5 SR-
180 SR+
470 3.3K
SL+
Q402:A
SL-
R423 R403
R463
Q402:B 3 FR-
1 180 FR+
470 3.3K
R473 R433 R413
2
180 470 3.3K
SW-
R472 R432 R412
6
7 SW+
180 470 3.3K
R462 R422 R402
5 C-
C+
180 470 3.3K
Q401:A
R461 R421 R401
Q401:B 3 FL+
1
180 470 3.3K
R471 R431 R411
2 FL-
180
470 3.3K
WF09
D
T
To NAVD-9178(2/
(SD-6 :E3)
P2005A
C628 104Z
C629 104Z
R745 39K
R744 1.2VDS
0
R746 39K
Q746 TA48033AF
1 3 +3.3V
I O
Refer to following table about the parts
displayed by mark " LIST ".
MODEL & TYPE R612 R610 R619 R
TX-SR505 MDD, MDC NC 10K NC 1
T-SR505 E MPP, MPB 1K NC 1K
TX-SR505 MWO, MWT NC 10K NC 1
MGK, MGQ
LBC2
Q171
C171
TC7WU04FU 104Z +3
1 8
VD
2 7
3 6
4 5
GND
R171 1M
1 2
24.576MHz
X171
C316
221J
C104
104Z
C306 47/25
+
C307
17 VQ
104Z 18
FLT+
+
C308 19
REFGND
100/16 20
AOUTB4- SA
21
CX_SDIN2 : 64
AOUTB4+ SA
22 CX_SDIN3 : 63
AOUTA4+
23
CX_SDIN4 : 62
AOUTA4-
C309 24
Q301
VA
104Z 25
AGND1 CS42518-CQ CX_
26
AOUTB3-
DIR/DAC/ADC
27
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