Onkyo TX-SR55 Service Manual page 87

A
MICROPROCESSOR-CONNECTION DIAGRAM
1
K0
K1
K2
K3
2
Q7501
FLUORESCENT TUBE
HNA-16SM10T
U7501
REMOTE
3
SENSOR
PIC-37043TH2
Q2101
MULTIFORMAT SDTV
VIDEO DECODER
ADV7183A
Q2104 DIGITAL
PAL/NTSC VIDEO
ENCODER
ADV7172
5
4
9
4
8
3
7
2
6
1
5
B
Q2106,7
VIDEO MUTE
SW LA7106M
Q7502 FL
TUBE DRIVER
M66005
Q2504 ON-SCREEN
CONTRLLER
LC74783
Q702
RESET
POWER FAILRE
DETECTOR
Q2011 VIDEO
SW CONTROLLER
TC9164
P701
FIRMWARE
WRITING PORT
1
2
3
4
5
6
7
8
C
12V TRIGGER A
12V TRIGGER B
12V TRIGGER C
KI0
KI1
KI2
12K
KI3
--> Vref
1
--> AVcc
2
<-- FLCS
3
<--
4 FLSDO
<-- FLCLK
5
<-- ~FLRST
6
--- P93/DA0/TB3IN
7
<-- OSDSDO
8
<--
9 OSDCS
<-- OSDCLK
10
--- P141
11
--- P140
12
--> BYTE
13
-->
14 CNVss
--- P87/XCIN
15
--- P86/XCOUT
16
--> ~RESET
17
<-- Xout
6MHZ 18
-->
19 Vss
OSC
--> Xin
20
--> Vcc1
21
--> ~NMI
22
--> REMIN
23
-->
24 POFF
--> ~VSYNC
25
--> SYNC
26
--> ~ISS
27
<-- VDSTB
28
<--
29 VDSDO
<-- VDCLK
30
--- P74/TA2OUT/W
31
--- P73/~CTS2/~RTS2/TA1IN/~V
32
<-- VCRST
33
<->
34 VCSCL
<-> VCSDA
35
<-- 232TX/FTXD
36
--> Vcc1
37
--> 232RX/FRXD
38
RESET
CNVSS
232RX
FCLK
VCC
FBUSY
232TX
GNDCPU
Q201
DSP
CS494003
TX-SR55
D
12V
TRIGGER
CONTROL
M30627FH
Q861
8-CH DAC
CS42518