Direct - Onkyo TX-8522 Service Manual

A B
MICROPROCESSOR-CONNECTION DIAGRAM
1
Q251
2
VIDEO SELECTOR
SWITCH LA7956
Q602
RESET
3
POWER FAILURE DETECT
Q302
SOURCE SELECTOR
SWITCH TC9273
Q712 XM/FM,AM SELECTOR
SWITCH
4
XM RADIO
BOARD
TUNER
PACK
5
C D
OPERATION
KEY
VSWA
1 P96/ANEX1/SOUT
VSWB
2 P95/ANEX0/CLK4
3 P94/DA1/TB4IN
4 P93/DA0/TB3IN
5 P92/TB2IN/SOUT3
6 P91/TB1IN/SIN3
7 P90/TB0IN/CLK3
BYTE
8 BYTE
CNVss
9 CNVSS
RDSDATA
P87/XCIN
10
P86/XCOUT
11
~RESET Q601
~RESET
12
Xout
X601 XOUT
13
Vss
VSS
14
6MHz Xin
XIN
15 M30624FHPFP
Vcc1
VCC1
16
P85/~NMI
17
POFF
P84/~INT2
18
P83/~INT1
19
~XMREQERR
P82/~INT0
20
XMCOMSEL
P81/TA4IN/~U
21
~XMDACRST
P80/TA4OUT/U
22
SELCLK
P77/TA3IN
23
SELDAT
P76/TA3OUT
24
SELSTB
P75/TA2IN/~W
25
P74/TA2OUT/W
26
TUXMSELA
27 P73/~CTS2/~RTS2/TA1IN/~V
TUXMSELB
28 P72/CLK2/TA1OUT/V
29 P71/RXD2/SCL2/TA0IN/TB5IN
P70/TXD2/SDA2/TA0OUT
30
FLASH WRITER
E F
Q851
D854
Segment
PURE
FL TUBE
Q852
AUDIO
DRIVER Digit
FL TUBE
M66005 Q854
D853 IND.
STANDBY IND. SW
P10/D8 80
P11/D9 79
P12/D10 78
~SD
P13/D11 77
~STEREO
P14/D12 76
~REMIN
P15/D13/~INT3 75
~IRIN
P16/D14/~INT4 74
SYSIN
P17/D15/~INT5 73
~SYSOUT
P20/AN20/A0(/D0/-) 72
BAND
P21/AN21/A1(/D1/D0)
71
INIT1
P22/AN22/A2(/D2/D1)
70
INIT2
INITIALIZING
P23/AN23/A3(/D3/D2)
69
INIT3
P24/AN24/A4(/D4/D3)
68
THERMAL
67
VOLH
P26/AN26/A6(/D6/D5)
66
PROTECT
65
P27/AN27/A7(/D7/D6)
Vss
VSS 64
SEC1H
P30/A8(/-/D7) 63
Vcc2
+5V
VCC2 62
P31/A09 61
P32/A10 60
P33/A11 59
P34/A12 58
APOWER
P35/A13 57
P36/A14 56
P37/A15 55
VOLOUT2
P40/A16 54
VOLOUT1
P41/A17 53

DIRECT

P42/A18 52
SPRLB
P43/A19 51
G H
U851
REMOTE
CONTROL
SENSOR
IR IN
IR OUR
RI IN/OUT
Q603
BUFFER
POWER
AMP.
Q855
THERMAL
DET.
LEVEL DET.
DC/CURRENT
DETECTOR
BIAS SELECTOR
RELAY <D>
Q452
Q481 VOLUME
M
DIRECT
MOTOR DRIVER
RELAY SW
Q592
SP B
RELAY
Q591
Q703,Q705 SP A
GATE RELAY
CIRCUIT
TO AUDIO
MUTE SW
TX-8522
Q912
POWER SW
RELAY