Schematic Diagram - Onkyo TX-8522 Service Manual

A B

SCHEMATIC DIAGRAM 3

MICROPROCESSOR SECTION
NADG-8876
1
C716 U01
101J
R850
10K
C717
3.3/50
13 (VX) RDSSIG
12 RDSDAT
11
C718 100/16
10
(VR)
9 TUR
8 R722 J701
47K
7 TUL
6 R721 J702
47K
5 +9V_TU
4 TUNED
3 STEREO
2 PLLSDA
2
1 PLLCLK
P704A
C728
C719
104Z P708
104Z
3
P707
2 SYSIN
RI
1
R709
100
P706 23 IRIN
22
IRIN
21
3
3 IROUT
2
IROUT
1
11 SIRIUSRX
10 SIRIUSTX
9 SRRST
8 XMDACRST
7 XMCOMSEL
6 XMREQERR
5 XMSRTXD
4 XMSRRXD
3 XMRST
2 TS_GND
1 +5V_XM
R725 47K
R726 47K
7 SR_R_OUT
6 SR_L_OUT
5 GND_A
4 XM_R_OUT
4
3 XM_L_OUT
2 +12V
1 -12V
5
C
D703
+ 1SS355
+
C725 C724
D702
100/16 100/16
1SS355
D713
Q701
D701
S-812C56
L701
1SS355
AUA-C3K
470M
2 3
I O
1 16
0Y Vcc
2 15
2Y 2X
3 14
Y_COM 1X
4 13
3Y X_COM
5 12
R727
1Y 0X
6 11
INH 3X
220 TUXMSELA C704
7 10
Vee A
DX-5R5L224
8 9
GND B
TUXMSELB
Q712
TC74HC4052AF
LEDZONE2
LEDPURE
LEDSTBY
FLDSDO
FLDCLK
FLDCS
FLDRST
KEYINT3
North American
KEYINT2
model only
KEYINT1
KEYINT0
KEY3
KEY2
KEY1
KEY0
C714
10/50
+
1
G
+
+ C623
C715
4.7/50 Q602
100/16
RN1404
47K
R723
47K
R724
TX-8522
D E
(D) (P) (A)
R719 56K 33K
None
R720 0 33K 56K
Q603
C609 104Z
RN2402
R714 0
C610 104Z
R716 0
C611 104Z
+5VCPU
C612 104Z
R720*
+5VTU
SYSIN
+5VMPU
R674
10K
R673
10K
81
82
83
47
R679 84
P04/AN04/D4
47
R680 85
P03/AN03/D3 P44/CS0 P50/WRL/WR
R681 47 Q601
86
P02/AN02/D2 P45/CS1 P51/WRH/BHE
R682 47
87
P01/AN01/D1 P46/CS2
R683 47
88
P00/AN00/D0 P07/AN07/D7 P47/CS3
R684 4.7K M30624FGPFP
89
P107/AN7/KI3 P06/AN06/D6
R685 4.7K
90
P106/AN6/KI2 P05/AN05/D5 P55/HOLD
4.7K
R686 91
P105/AN5/KI1
4.7K
R687 92
P104/AN4/KI0 P57/RDY/CLKOUT
4.7K
R688 93
P103/AN3 P60/CTS0/RTS0
4.7K
R690 94
P102/AN2
4.7K
R692 95
P101/AN1 P62/RXD0/SCL0
96
AVSS P63/TXD0/SDA0
R694
97
P100/AN0 P64/CTS1/RTS1/CTS0/CLKS1
4.7K
98
Vref
C621
99
AVcc P66/RXD1/SCL1
104Z 100
P97/ADTRG/SIN4 P67/TXD1/SDA1
R609 10K
R610
10K
R613
1M
X601
6.000MHz
P715A
TO DISPLAY(SCH.-2)
F G
Q705
RN2402
R705
AMUT
2.2K
Q703
RN1404
R653
10K
R652
10K
C606
104Z
50 SPRLA
R650 0
49
48
47
FCE
46
R646 0
45
R64547 PLLSDA
44
P52/RD
R64447 PLLCLK
43
P53/BCLK
42
P54/HLDA
41 FEPM
R642 0
40
P56/ALE
R641 0
39
R640 0
38
R63947
37 XMRST
P61/CLK0
R638220
36 XMSRRXD
R63747 XMSRTXD
35
R636 47 FBUSY
34
R635 47 FCLK
33
P65/CLK1
R634 47 FRXD
32
R633 47 FTXD
31
L702
022K
1 RESET
2 CNVSS R733
10(1W)
3 FRXD
C711
4 FCLK
104Z
5 +5VMPU
47K
6 FBUSY 2
R697 G
7 FTXD
C712
8 MPUGND
+
9 APOWER
R629 100/16
10K
D708
1SS355
TX-8522
H
TU_R
13
TU-GND 12
TU_L 11
TS_GND 10
DIRECT 9
POFF2 8
SEC1H 7
SPRLB 6
SPRLA 5
PROTECT 4
+12VA 3
2
-12VA 1
5.6VM 1
RLGND 2
3
MPUGND 4
5
SELCLK 6
SELDAT 7
+12VS 8
VSWB 9
VSWA 10
AMUT 11
SELSTB 12
VOLOUT2 13
VOLOUT1 14
+12VR 15
16
17
18
19
MPUGND 1
APOWER 2
+10S 3
POFF 4
+12VS 5
RLGND 6
NAETC-8878
MPUGND 1
1 MPUGND
+5VTU 2
2 +5VTU
THERMAL 3
3 THERMAL 2
O
U08