Onkyo HTR940 Service Manual page 20

A
SCHEMATIC DIAGRAMS-3
DSP & MICROPROCESSOR SECTION
P701A
1
2
3
1
2
3
14 SYSIN
13 TU_L
12 GNDTU
11 TU_R
10 V4_L
9 GNDV4
8 V4_R
7 MIC
6 RTAD
5 LTAD
4 DAC_SR
3 DAC_SL
2 DAC_SBR
4
1 DAC_SBL
14 DAC_FR
13 DAC_FL
12 DAC_SW
11 DAC_CT
10 GND+12V
9 -12VA
8 +12VA
7 GNDDG
6 VOLDAT
5 VOLCLK
4 PROTECT
3 SEC1H
2 VOLH
1 AMUT
5
B
To NADIS-8785
(SD-7 : H1)
Refer to following table about the parts displayed by mark "
TYPE
R104 R106 R107
0 0
MDC None
0 None None
MPP
R592 0
R591 0
R562
NJM4580M-D
22K
R532 R522
6 6
7 7
22K 1.5K
Q502:A
5 5
Q501:A
Q503:A NJM4580M-D
NJM4580M-D
NJM4580M-D
NJM4580M-D
NJM4580M-D
Q503:B
Q501:B
3 3
1 1
Q502:B
2 2
R531 R521
22K
22K 1.5K
R561
C
To TUNER UNIT
P101A
+
C103
100/16
R108
0
R109 0
(1/2W)
R702 2.2
D742
+10.6V
Q741
SI8008TM
".
1
VIN
5
SS
GND
+12V
-12V
R503 (1/2W)
22
R504 (1/2W)
22
C532 220/25
+
C531 220/25
Q401 - Q404 :
+
R478
6
SBR 7
R468
5
Q404:A
R467
3
FIL_FR SBL 1
R477
FIL_FL
2
Q404:B
R476
6
SR 7
R466
5
Q403:A
R465
3
SL 1
R475
2
Q403:B
R474
6
SW 7
R464
NC
5
Q402:A
R512
R463
+12V
Q402:B 3
10K
R502
C
6 1
R473
7 2
10K
5
R472
-12V
6
FR 7
R462
5
Q401:A
3
R461
Q401:B
1 3
10K
2 FL 1
R471
R501 2
10K
R511
HT-R940
To NAVD-8811 To NAVD-8811
(SD-4 : E1) (SD-5 : G1)
P2005A
P2004A
56K
R110
1SS355
R742 1.8K
R743 18K
+2.2V
L741
2
SW
470K
4
VADJ
Q762
TA48033AF
+5V
1 3
I O
MDC Type only
9 +5VXM
8
7 XMRST
To NADG-8809
6 XMSRRXD
5 XMSRTXD
(SD-6 : E4)
4 XMSRSEL
3 R101 0 XMREQERR
2 XMCOMSEL
1 XMDACRST
C341 101J
R351 10k
R341
2 C324 R324
10/50 56
1
10k
+
3
Q341:B
C323 R323
NJM4580M-D 10/50 56
+
+
C322 R322
NJM4580M-D
56
10/50
5
Q341:A
R342 7
+
10k
6
C321 R321
10/50 56
R352 10k
C342 101J
NJM4580M-D
R458
R438 R418
180 4.7K 470 3.3K
180
R448
R428 R408
4.7K 3.3K
470
R447 R427 R407
180 470 3.3K
4.7K
180
C315 102K
C306 47/50
R457
R437 R417
C307 104Z
4.7K
470 3.3K
+
R436 R416
R456 17
VQ
470 3.3K
180 4.7K
18
FLT+
+
19
REFGND
180
C308
20
AOUTB4-
100/16
R446 21
R426 R406
AOUTB4+
4.7K
470 3.3K
22
AOUTA4+
R445 R425 R405 23
AOUTA4-
180 4.7K 470 3.3K
C309
24
VA
104Z 25
AGND1
180
26
AOUTB3-
R455 27
R435 R415
AOUTB3+
4.7K
470 3.3K
28
AOUTA3+
29
AOUTA3-
R454 R434 R414 30
AOUTB2-
180 4.7K 470 3.3K
31
32
C316
180 102K
R444 R424 R404 C302
+
4.7K 470 3.3K 470/6.3
R443 R423 R403
180 4.7K 470 3.3K
180
R453 R433 R413
4.7K 470 3.3K
R452 R432 R412
4.7K 470 3.3K
180
180
R442
R422 R402
4.7K
470 3.3K
R441 R421 R401
180 470 3.3K
4.7K
180
R451 R431 R411
4.7K 470 3.3K
D
To NAETC-8781
(SD-2 : A4)
P2006A
JL703B
Q710
S812C5
-C3G-T2
+10.1V
2
I
Q742
BD7820
1SS355
LEDS
D743
FLDS
FLDC
+1.2V
FLDC
FLDR
KEY
KEY
KEY
KEY
+3.3V
KEY
KEY
VSW
+
R302
47
+3.3
6
6
6
6
SAI_SLCK
CX_SDIN2 64
6
SAI_LRCK
CX_SDIN3 63
5
OMCK
CX_SDIN4 62
5
ADCIN1
Q301
5
ADCIN2
CS42528-CQZR 5
CX_SDOUT
5
DIR/DAC/ADC
RMCK
5
SAI_SDOUT
5
31 AOUTB2 TXP 50
VLS
5
32 AOUTA2 RXP0 49
DGND2
5
VD2
5
4
+5V
C331 330J R331
C332 330J R332
C333 330J
R333
C334 330J R334