Dac Section - Onkyo TX-SR875 Service Manual

A
SCHEMATIC DIAGRAM-9 (SD-9)

DAC SECTION

1
RS232
RI
IN 1
COAXIAL IN 2
IN 3
2
IN 1
IN 2
OPTICAL
OUT
3
4
5
<Note>
SD-x:XY is short for Shcematic Diagram-x and
each socket's location, X=A to H, Y=1 to 5.
<Note>
1. Refer to SCHEMATIC DIAGRAM-17 (SD-17)
for digital audio signal flow wave forms.
2.
WF01 is short for WaveForm01 .
B
NADG-9074
U27 DAC PC BOARD
5
R3031 10K 1
330
9 EN FORCEOFF
C3031 1/50 2
R3032
4 C1+
C3032 1/50 3
8 V+
4
R3036
3 C1- T1OUT
C3033 1/50 5
C2+
7 FORCEON
330
6
2 C2-
C3034 1/50
7
6 V- INVALID
8
R1IN
1 R1OUT
C3037
Q3031
104Z
ICL3221E
R3025 RS232 TRANCEIVER
220
COAX1
COAX3
P3002
LBC2518T2R2M R3022 10K
10
R3011 L3011 C3012
C3019 080D
C3011 104K
R3012
75
101J R3018
10K
C3014
75
R3016
101J C3015
COAX2
R3015 L3012 10 104K
C3016
080D
LBC2518T2R2M
LBC2518T2R2M
R3019 L3013
10 C3018
C3017 104K R3021
R3020
75
101J
220K
GP1FAV51RKF5
U3001
C3001 WF01
3
VCC
1
SELECT VCC
2 OPT1 2
1A
GND
104Z OPT2 3
1B
1 47 4
IN 1Y
5
R3001
2A
6
U3002
2B
7
C3002
3 2Y
VCC 8
GND
2
GND
Q3001
104Z
R3002 TC74VHC157FT
1
IN
47
GP1FAV51RKF5
R3004
3
IN
220
LBC2518T470M
C3004 C3006
2
VCC
L3001
104Z
1
GND
100/16
U3004
GP1FAV51TKBF
+5.0V
33
AOUTA2-
34
AOUTB1-
35
AOUTB1+
36
AOUTA1+
C3052 37
AOUTA1-
102K 38
MUTEC
1.5K
C3053
39
LPFLT
40
223K R3050
AGND2
C3054 41
VARX
104Z 42
RXP7/GP7
43
RXP6/GP6
44
RXP5/GP5
45
RXP4/GP4
46
RXP3/GP3
47
RXP2/GP2
48
RXP1/GP1
C3059
470/10
+5.0V
C3073 104Z
TC7WU04FU Q3071
+3.3V
8
1
VD
L3072
2 7
3 6 LM182
5
4
GND
R3071 1M
L3071
LBC2518T470M
X3071
24.576MHz
C3082
R3087
ADL-
R3085 10K
56 47/25
6
R3086 C3081
7
ADL+
5
56 47/25
Q3081:B
NE5532APSR
R3097 C3092
ADR-
R3095 10K
56 47/25
Q3082:B
6
R3096 C3091
ADR+ 7
5
56 47/25
NE5532APSR
10K
R3037
16 LBC2518T470M
+3.3V
L3031
15
VCC
14
GND
13
R3035
12
11 10K
T1IN
10 330 R3034
9
330 R3033
TC74HCU04AF
14 1
VCC
13 2
Q3021
IN6
12 3
OUT6
R3014 10K
11 4
IN5
10 5
OUT5
9 6 C3013 080D
IN4
8 7
OUT4 GND
WF02
C3021 104Z
C3022 100/16
L3021
LBC2518T470M
SPDIFSW
L3002
16
15
LBC2518T470M
C3069
ST
14 COAX_1
4A
104Z
13
4B
12 COAX1/COAX2
4Y
11
3A
10 HDMISPF
3B
9 COAX3/HDMISPF P4S MODEL ONLY
3Y
R3007 : 905/8.8 ONLY
OPTF
NETSPDIF
SPFOUT
L3043
LBC2518T4R7M
ADL-
16 ADL+
AINL-
C3045
15 ADR+
AINL+
14 R3048
AINR+
3.9K
13 222J
Q3041 AINR-
12 R3047 220 DIRRST
_RST
CS42516-CQ 11 R3046 47 DIRINT
INT1
10 R3045 1K DIRCS
DIR & CODEC
CS/AD0
9 R3043 1K DIGSDO
CDIN/AD1
8 R3042 47 DIGSDI
CDOUT/SAD
7 R3041 1K DIGCLK
CCLK/SCL
6
VLC
C3044 104Z
5
DGND1
4
VD1
3 C3043
CX_LRCK
2 104Z
CX_SCLK
1
CX_SDIN1
+5.0V
+3.3V
C3065
104Z
BCK_DIR
R3061 47 LRCK_DIR
MCK_DIR
SDOUT_DIR
SPFOUT
WF03
WF04 WF05
R3082 10K
R3083 10K
R3084
2 R3081
10K
1
10K
3
Q3081:A
NE5532APSR
R3092 10K
R3093 10K
R3098 +14.4V
+OP6
R3094
R3091
2
390
1
10K 10K
3
Q3082:A
R3099 -14.4V
NE5532APSR
-OP6
390
C
FTXD
FRXD
HDPCMSW 30
DSP3RST 29
DSDRCSW 28
RI
DSP3INT 27
DIRSW 26
DSP2RST 25
DSDDISW 24
DSP2INT 23
DEC 22
DSP1RST 21
NIC 20
DSP1INT 19
MEQMUT 18
DSP3CS 17
16
DSP2CS 15
14
DSP1CS 13
12
+5VSW 11
10
HDMISPF 9
8
GNDDAC 7
SPFOUT 6
GNDDAC 5
GNDDSP2 4
+3.3VSPA 3
GNDDSP2 2
1
MCK_DIR 30
BCK_DIR 29
SDOUT_DIR 28
LRCK_DIR 27
GNDDSP 26
DIGCLK 25
24
DATA_SUR/DSDSL
DIGSDO 23
LRCK4/DSDSR 22
GNDDSP 21
ADR- DATA_CSW/DSDC 20
19
DIGSDI
LRCK4/DSDSW 18
+3.3VDG 17
MCK/DSDCLK 16
GNDDSP 15
BCK4/GND 14
GNDDSP 13
DATA_F/DSDFL 12
+2.5VDSP1 11
LRCK4/DSDFR 10
+2.5VDSP1 9
DATA_SB/DSDSBL 8
+3.3VDSP 7
LRCK4/DSDSBR 6
+3.3VDSP 5
DATA_CR/GND 4
+2.5VDSP23 3
LRCK4/GND 2
+2.5VDSP23 1
WF06
WF08
+3.3VDG
(PART-12)
OR TO NATRM-9108
(PART-27)
TX-SR875
D
R3782-3788
220/10
:330
C3781
1 ZEROL
VC
10K
2 ZEROR
AG
R3781
3 MSEL
O
LRCK4/GND 4 LRCK
R3782
O
DATA_CR/GND R3783 5 DATA
AG
BCK4/GND R3784 6 BCK
V
MCK/DSDCLK R3785 7 SCK
VC
8 DGND
VC
9 VDD
DAC1CS R3786 10 MS
AG
DIGSDO R3787 11 MDI
O
DIGCLK R3788 12 MC
OU
DIGSDI R3789 13 MDO
AGN
DACRST 47 14 RST
VC
R3790
330
2 CH DA
+3.3V
R3762-3768: 330
C3761
1 ZEROL
220/10
VC
2 ZEROR
10K
AG
R3761 3 MSEL
O
LRCK4/DSDSBR R3762 4 LRCK
O
DATA_SB/DSDSBL R3763 5 DATA
AG
BCK4/GND R3764 6 BCK
V
MCK/DSDCLK R3765 7 SCK
VC
8 DGND
VC
9 VDD
DAC2CS R3766 10 MS
AG
DIGSDO R3767 11 MDI
O
DIGCLK R3768 12 MC
OU
DIGSDI R3769 13 MDO
AGN
47 14 RST
DACRST
VC
R3770 330
2 CH DA
+3.3V
R3742-3748: 330
1 ZEROL
VC
10K 2 ZEROR
AG
R3741
3 MSEL
O
LRCK4/DSDSR R3742 4 LRCK
O
DATA_SUR/DSDSL 5 DATA
R3743
AG
BCK4/GND R3744 6 BCK
V
MCK/DSDCLK 7 SCK
R3745
VC
8 DGND
VC
9 VDD
DAC1CS 10 MS
R3746
AG
DIGSDO R3747 11 MDI
O
DIGCLK R3748 12 MC
OU
DIGSDI R3749 13 MDO
AGN
DACRST 47 14 RST
VC
R3750 330
2 CH DA
+3.3V
R3722-3728: 330
C3721
1 ZEROL
220/10
VC
2 ZEROR
10K
AGN
R3721
3 MSEL
O
LRCK4/DSDSW R3722 4 LRCK
O
DATA_CSW/DSDC R3723 5 DATA
AG
6 BCK
BCK4/GND R3724
V
MCK/DSDCLK R3725 7 SCK
VC
8 DGND
VC
9 VDD
DAC1CS R3726 10 MS
AG
DIGSDO R3727 11 MDI
OU
DIGCLK R3728 12 MC
OU
DIGSDI R3729 13 MDO
AGN
47
DACRST 14 RST
VC
R3730 330
2 CH DA
+3.3V
R3702-3708
:330
WF07
1 ZEROL
VC
2 ZEROR
10K
AG
R3701 3 MSEL
O
LRCK4/DSDFR R3702 4 LRCK
O
DATA_F/DSDFL R3703 5 DATA
AG
BCK4/GND R3704 6 BCK
V
MCK/DSDCLK 7 SCK
VC
R3705 8 DGND
VC
9 VDD
DAC1CS R3706 10 MS
AG
DIGSDO R3707 11 MDI
O
DIGCLK R3708 12 MC
OU
DIGSDI
R3709 13 MDO
AGN
DACRST 47 14 RST
VC
R3710
330
2 CH DA
+3.3V
P3101A
TO NAASP-9056
SD-7:C5