Dac Section - Onkyo TX-SR876 Service Manual

A B
SCHEMATIC DIAGRAMS-9 (SD-9)

DAC SECTION

NADG-9074
U27 DAC PC BOARD
5
R3031 10K 1
330 EN
9
C3031 1/50 2
R3032
1 4 C1+
C3032 1/50 3
8 V+
4
R3036
RS232 3 C1-
C3033 1/50 5
7 C2+
330
6
2 C2-
C3034 1/50 7
6 V-
8
1 R1IN
C3037
Q3031
104Z
ICL3221E
R3025 RS232 TRANCEIVER
220
RI COAX1
COAX3
P3002
LBC2518T2R2M R3022 10K
R3011 L3011 10 C3012
C3019
IN 1
C3011 R3012 104K
75
101J
C3014
75
R3016
101J C3015
COAXIAL
IN 2
R3015 L3012 10 104K COAX2
LBC2518T2R2M
LBC2518T2R2M
R3019 L3013 10 C3018
IN 3
C3017 104K
75 R3020 R3021
101J 220K
GP1FAV51RKF5
U3001
2
WF01
3 C3001
VCC
1
SELECT
2 OPT1 2
1A
IN 1 GND
104Z OPT2 3
1B
1 47 4
IN 1Y
5
R3001 2A
6
U3002
2B
7
3 C3002 2Y
VCC 8
GND
2
OPTICAL IN 2
GND Q3001
104Z
R3002 TC74VHC157FT
1
IN
47
GP1FAV51RKF5
R3004
3
IN
220
LBC2518T470M
2 C3004 C3006
OUT
VCC
L3001
104Z
1
GND
100/16
U3004
GP1FAV51TKBF
+5.0V
3
C3052
102K
C3053 1.5K
223K R3050
C3054
104Z
C3059
470/10
C3073 104Z
TC7WU04FU Q3071
+3.3V
1 8
VD
2 7
6
3
4 4 5
GND
R3071 1M
LBC2518T470M
X3071
24.576MHz
R3087 C3082
ADL-
R3085 10K
56 47/25
R3086 C3081 7
ADL+
56 47/25
Q3081:B
NE5532APSR
C3092
ADR- R3097
R3095 10K
56 47/25
Q3082:B
R3096 C3091
ADR+ 7
56 47/25
NE5532APSR
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-21 (SD-21)
for digital audio signal waveforms.
2.
WF01 is short for WaveForm01 .
C
10K
R3037
16 LBC2518T470M
+3.3V
FORCEOFF
15 L3031
VCC
14
GND
13
T1OUT R3035
12
FORCEON
11 10K FTXD
T1IN
10 330 R3034
INVALID
9 FRXD
R1OUT
330 R3033
HDPCMSW 30
DSP3RST 29
DSDRCSW 28
RI
DSP3INT 27
DIRSW 26
DSP2RST 25
DSDDISW 24
TC74HCU04AF DSP2INT 23
DEC 22
14 1
VCC
080D 13 2 DSP1RST 21
IN6 Q3021
12 3 NIC 20
OUT6
R3018 R3014 10K
11 4 DSP1INT 19
IN5
10K 10 5 MEQMUT 18
OUT5
9 6 C3013 080D DSP3CS 17
IN4
C3016 8 7 16
OUT4 GND
080D WF02 DSP2CS 15
C3021 104Z 14
C3022 100/16 DSP1CS 13
L3021 12
LBC2518T470M +5VSW 11
10
HDMISPF 9
SPDIFSW 8
GNDDAC 7
SPFOUT 6
GNDDAC 5
GNDDSP2 4
16 L3002
VCC +3.3VSPA 3
15 LBC2518T470M
ST C3069 GNDDSP2 2
14 COAX_1
4A 104Z 1
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
MCK_DIR 30
BCK_DIR 29
L3043
SDOUT_DIR 28
LRCK_DIR 27
LBC2518T4R7M
GNDDSP 26
ADL- DIGCLK 25
24
DATA_SUR/DSDSL
33 16 ADL+ DIGSDO 23
AOUTA2- AINL-
34 15 C3045 ADR+ LRCK4/DSDSR 22
AOUTB1- AINL+
35 14 R3048 GNDDSP 21
AOUTB1+ AINR+
3.9K
36 13 222J ADR- DATA_CSW/DSDC 20
AOUTA1+ Q3041 AINR-
37 12 R3047 220 DIRRST DIGSDI 19
AOUTA1- _RST
38 CS42516-CQ 11 R3046 47 DIRINT 18
LRCK4/DSDSW
MUTEC INT1
39 10 R3045 1K DIRCS +3.3VDG 17
LPFLT DIR & CODEC
CS/AD0
40 9 R3043 1K DIGSDO MCK/DSDCLK 16
AGND2 CDIN/AD1
41 R3042 47 15
8 DIGSDI GNDDSP
VARX CDOUT/SAD
42 7 R3041 1K DIGCLK BCK4/GND 14
RXP7/GP7
CCLK/SCL
43 6 GNDDSP 13
RXP6/GP6 VLC
44 C3044 104Z
5 DATA_F/DSDFL 12
RXP5/GP5 DGND1
45 4 +2.5VDSP1 11
RXP4/GP4 VD1
46 3 C3043 LRCK4/DSDFR 10
RXP3/GP3 CX_LRCK
47 2 104Z +2.5VDSP1 9
RXP2/GP2 CX_SCLK
48 1 DATA_SB/DSDSBL 8
RXP1/GP1
CX_SDIN1
+3.3VDSP 7
+5.0V
LRCK4/DSDSBR 6
+3.3VDSP 5
+3.3V
DATA_CR/GND 4
+2.5VDSP23 3
LRCK4/GND 2
+2.5VDSP23 1
+5.0V
C3065
104Z
BCK_DIR
L3072 R3061 47 LRCK_DIR
MCK_DIR
LM182
SDOUT_DIR
SPFOUT
L3071
WF06
WF03
WF04 WF05
WF08
R3082 10K
R3083 10K
R3084
6 2 R3081
10K
10K 1
5 3
Q3081:A
NE5532APSR
R3092 10K
R3093 10K
R3098 +14.4V
+OP6
6 R3094 2 R3091
390
10K 1 10K
5 3
Q3082:A -14.4V
R3099
NE5532APSR
-OP6 390
D E
2ch DAC x5 Post Filters
NE5532APSR
Q3808:A
R3782-3788
220/10 R3808 560
:330
C3781
2
C3789 104J C3808 272J
1 ZEROL 28 C3788
VCC2L 3 1
10K 220/10
2 ZEROR 27
AGND3L
R3781
3 MSEL 26
OUTL-
LRCK4/GND R3782 4 LRCK 25 5 Q3808:B
OUTL+
DATA_CR/GND R3783 5 DATA 24 C3787 7
AGND2
BCK4/GND R3784 6 BCK 23 6
VCC1 C3818 272J
MCK/DSDCLK R3785 7 SCK 22
220/10
VCOML
C3785
8 DGND 21
VCOMR C3790 R3818 560
9 VDD 20 47/25
IREF
102K Q3809:A
DAC1CS R3786 10 MS 19 10K R3791
AGND1 R3809 560
DIGSDO R3787 11 MDI 18
OUTR-
DIGCLK R3788 12 MC 17 2
OUTR+ C3809 272J
DIGSDI R3789 13 MDO 16
AGND3R
C3784 1
DACRST 47 14 RST 15 3
VCC2R
104J NE5532APSR
R3790
330 C3783 Q3809:B
2 CH DAC 5
220/10
7
6
C3819 272J
R3819 560
+5VDAC
+3.3V R3805 560
+5.0V
R3762-3768: 330
2
C3769 104J C3805 272J
C3761
1 ZEROL 28 C3768
220/10
VCC2L 3 1
220/10
10K 2 ZEROR 27
AGND3L Q3805:A
R3761 3 MSEL 26
OUTL- NE5532APSR
LRCK4/DSDSBR R3762 4 LRCK 25 5
Q3805:B
OUTL+
DATA_SB/DSDSBL R3763 5 DATA 24 7
AGND2
BCK4/GND R3764 6 BCK 23 220/10 6
VCC1 C3815 272J
MCK/DSDCLK R3765 7 SCK 22
C3767
VCOML
8 DGND 21
VCOMR C3770 R3815 560
9 VDD 20 47/25 C3765
IREF 102K Q3806:A
DAC2CS R3766 10 MS 19 10K R3771
AGND1 R3806 560
DIGSDO R3767 11 MDI 18
OUTR-
DIGCLK R3768 12 MC 17 2
OUTR+ C3806 272J
DIGSDI R3769 13 MDO 16
AGND3R
C3764
DACRST 47 14 RST 15 104J 3 1
VCC2R
NE5532APSR
R3770 330
C3763 220/10
2 CH DAC 5 Q3806:B
7
6
C3816 272J
R3816 560
Q3803:A
+3.3V +5.0V
+5VDAC R3803 560
R3742-3748: 330
2
C3749 104J C3803 272J
1 ZEROL 28 C3748
VCC2L 3 1
10K 2 ZEROR 27 220/10
AGND3L NE5532APSR
R3741
3 MSEL 26
OUTL-
LRCK4/DSDSR 4 LRCK 25 5 Q3803:B
R3742
OUTL+
DATA_SUR/DSDSL R3743 5 DATA 24 7
AGND2
BCK4/GND R3744 6 BCK 23 220/10 6
VCC1
C3813 272J
MCK/DSDCLK 7 SCK 22
R3745 C3747
VCOML
8 DGND 21
VCOMR C3750 R3813 560
9 VDD 20 47/25 C3745
IREF
102K Q3804:A
DAC1CS 10 MS 19 10K R3751
R3746
AGND1 R3804 560
DIGSDO R3747 11 MDI 18
OUTR-
DIGCLK R3748 12 MC 17 2
OUTR+
C3804 272J
DIGSDI R3749 13 MDO 16
AGND3R
DACRST 47 14 RST 15 C3744 3 1
VCC2R
104J NE5532APSR
R3750 330
220/10
2 CH DAC C3743 5 Q3804:B
7
6
C3814 272J
R3814 560
Q3802:A
+3.3V
+5.0V
+5VDAC R3802 560
R3722-3728: 330
2
C3729 104J C3802 272J
C3721
1 ZEROL 28
220/10 C3728
VCC2L 3 1
10K 2 ZEROR 27 220/10
AGND3L NE5532APSR
R3721 3 MSEL 26
OUTL-
4 LRCK 25 5 Q3802:B
LRCK4/DSDSW R3722
OUTL+
DATA_CSW/DSDC R3723 5 DATA 24 7
AGND2
BCK4/GND R3724 6 BCK 23 220/10 6
VCC1 C3812 272J
MCK/DSDCLK R3725 7 SCK 22 C3727
VCOML
8 DGND 21
VCOMR C3730 R3812 560
9 VDD 20 47/25 C3725
IREF 102K Q3807:A
DAC1CS R3726 10 MS 19 10K R3731
AGND1 R3807 560
DIGSDO R3727 11 MDI 18
OUTR-
DIGCLK R3728 12 MC 17 2
OUTR+ C3807 272J
DIGSDI R3729 13 MDO 16
AGND3R
DACRST 47 14 RST 15 C3724 3 1
VCC2R
104J NE5532APSR
R3730 330
C3723 220/10
2 CH DAC 5 Q3807:B
7
6
C3817 272J
+3.3V
560
R3817
WF09
R3800 560
R3702-3708 +5VDAC
+5.0V
:330
2
WF07 C3709 104J C3800 272J
28
1 ZEROL C3708
VCC2L 3 1
Q3800:A
10K 2 ZEROR 27 220/10
AGND3L NE5532APSR
R3701 3 MSEL 26
OUTL-
LRCK4/DSDFR Q3800:B
R3702 4 LRCK 25 5
OUTL+
DATA_F/DSDFL R3703 5 DATA 24 C3707 7
AGND2
BCK4/GND R3704 6 BCK 23 6
VCC1 C3810 272J
47/25
MCK/DSDCLK 7 SCK 22 220/10
VCOML
C3705
R3705 8 DGND 21
C3710
VCOMR R3810 560
9 VDD 20
IREF Q3801:A
102K
DAC1CS R3706 10 MS 19 R3711 10K
AGND1 R3801 560
DIGSDO R3707 11 MDI 18
OUTR-
DIGCLK R3708 12 MC 17 2
OUTR+ C3801 272J
DIGSDI R3709 13 MDO 16 104J
AGND3R
DACRST 47 14 RST 15 C3704 3 1
VCC2R
R3710 NE5532APSR
330
2 CH DAC 5 Q3801:B
7
6
272J
C3811
+3.3VDG
+5.0V
R3811 560
+5VDAC
+3.3V
P3101A P3102A P3103A
TO NAETC-9056
TO NAETC-9056 TO NAETC-9056
SD-7:C5
SD-7:C4 SD-7:C3
F G
VLSC
Q3814:A Q3824:A Q3834:A
+14.4V
NE5532APSR
R3898 R3948
R3908 R3928
3.3K 180 2
R3888 10K 1.5K 22K 22K
R3828 R3848 R3688 2
2 1
10K 1 2
R3938 DACCR
C3848 1 3 C3878
3 1
R3838 R3858
180 3
C3858
3 47/50
3.3K R3698 122J
Q3844:A
-14.4V
R3878 C3838 C3868
NE5532APSR
Q3824:B C3869 Q3834:B
Q3844:B
3.3K 180
5
R3839 R3859 R3699
5 C3879
5 7
C3849 7 5
7 6
R3829 R3849 6 7 47/50
R3889 R3939
6
DACSWR
3.3K R3689 6
10K R3899 R3909 R3929 R3949
180
Q3814:B
10K 1.5K 22K 22K
Q3813:A
Q3823:A +14.4V Q3833:A
NE5532APSR
R3895 R3905 R3925 R3945
3.3K 180 2
R3885 10K 1.5K 22K 22K
R3825 R3845 2
R3685 2
1 DACSBL
1 2
10K R3935
1 3
C3845 C3875
R3835 R3855 3 1
180 3
3
47/50
3.3K R3695
Q3843:A
-14.4V
R3875 C3835 C3865
NE5532APSR Q3823:B Q3833:B
C3866 Q3843:B
3.3K 180
5
R3836 R3856 R3696
5
7 C3876
5
7 5
C3846
7 6
R3826 R3846 47/50 DACSBR
6 R3886 7
6 R3936
6
3.3K R3686
R3896 R3906 R3926
180 Q3813:B 10K R3946
10K 1.5K 22K 22K
Q3812:A +14.4V Q3822:A Q3832:A
NE5532APSR
R3893 R3903 R3923
C3823 R3943
SL
3.3K 180
R3883 1.5K 22K 2 22K
2 10K
R3823 R3843 R3683
2 1
10K 1 2
C3843 1 R3933 3 DACSL
C3873
3 1
R3833 R3853
3
3
47/50
3.3K
R3693
180 Q3842:A
R3873 -14.4V
C3863
C3833
C3834 Q3822:B Q3832:B
NE5532APSR Q3842:B
3.3K 180
R3854 5
R3834 R3694 5
C3874
5 7
C3844 7 5
7 6
R3824 R3844 47/50 DACSR
6 C3864 R3934 7
R3884
6
6
3.3K R3684
10K R3894 R3904 R3924 R3944
180 Q3812:B
10K 1.5K 22K 22K
Q3811:A
+14.4V Q3821:A Q3831:A
R3892 R3922
R3902 R3942
3.3K 180 2
R3882 10K 1.5K 22K 22K
R3822 R3842 2
R3682 2 1
1 2
10K R3932 3 DACC
C3842 1 C3872
3 1
R3832 R3852 R3692
3
3 47/50
180
3.3K
Q3841:A
-14.4V
R3872 C3832 C3862
Q3821:B Q3831:B
NE5532APSR
Q3841:B
3.3K 180
5
R3837 R3857 R3697
5 C3877
5 7
7 5
C3847
7 6
R3827 R3847 6 7 47/50 DACSW
R3887 R3937
6
3.3K R3687 6
10K R3897 R3907 R3927
180
Q3811:B
SW
R3947 22K
10K 1.5K 22K
Q3810:A Q3830:A
+14.4V Q3820:A
R3890 R3900 R3920 R3940
WF10
3.3K 2
R3880 10K 1.5K 22K 22K
2
R3820 R3840 R3680
2 1
1 2
10K R3930 DACFL
180 1 3
C3840
R3830 R3690 3 1
3
3
C3870
R3850 180
Q3840:A 47/50
3.3K -14.4V
R3870 C3860
R3871 Q3820:B Q3830:B
Q3810:B Q3840:B
3.3K
5
R3831 R3851 R3691
5
C3871
5 7
180 7
5
C3841 7 6
R3821 R3681 47/50 DACFR
6 C3861 R3931 7
R3881 6
180 6
R3841
10K
3.3K R3891 R3901 R3921 22K
10K
1.5K 22K R3941
+2.4V
+2.5VDSP1
TA4805AF
Q7251
+5VDAC 3 O 1
I
+5.0V
+2.4V
+2.5VDSP23
+5VDG
Q7232 BD7820
+5.9V
TA48033AF
TA4805AF
Q7242 Q7241 D7233
+3.3V +5.0V +5.9V
3 O 3 O
1 1 I
I
1SS352
+3.3VDG
TA48033AF
Q7246
+3.3V RL1N4003 RL1N4003
DC,DD Type Only
3 O 1
I
+3.3VDSP
+4.5V D7246 D7245
TX-SR876/SA876
H
R3978
+OP5
Resistor Value
22
R3820-R3839 390
R3860-R3879 4.7K
C3820-C3839 471J
C3840-C3849 272J
R3979
22
R3976
22
R3977
22
R3974
22
R3975
22
R3972
22
R3973
22
R3970
22
R3971
22
POFF2 1
+9VDG 2
GNDDAC 3
GNDDSP 4
+9VDC 5
GNDDC 6
+
D7201 1SS352
R7204 2.7K
SI8008TM
R7205 4.7K
Q7201
L7201
2 1
SW VIN
470K
4 5
VADJ SS
GND
D7221 1SS352
R7224 2.7K
R7225 4.7K SI8008TM
Q7221
L7211
2 1
SW VIN
470K
4 5
VADJ SS
GND
D7231 1SS352
R7234 56K
SI8008TM
R7235 5.6K
Q7231
R7231
L7221
2 1
SW VIN
470K 0.22(1/2W)
4 VADJ 5
SS
GND