Onkyo TX-L55 Service Manual page 40

A B
MAIN MICRO PROCESSOR-CONNECTION DIAGRAM
1
2
Q5851,Q5852
SPEAKER
DET. RELAY
SW
3
Q7501
DSP IC
CS494003
To speaker
To speaker
Terminal
Terminal
4
RI IN/OUT
5
C
COMPONENT
VIDEO
SELECTOR
SWITCH
PRE AMPLIFIER
MUTING SW
Q2120,Q2124
S VIDEO SDET
41
DETECTOR
42
Q4301
CIRCUIT
SELMUT 43
SELECTOR/TONE
SELCK 44
VOLUME IC
Q7800 SELDA
45
BD3817
CODECPD
DIR/CODEC 46
CODECCS
AK4588 47
FCS 48
DRES 49
DSPCS 50
CONV 51
SWDET
52
SLDET 53
SBDET 54
CDET 55
PAPOWER 56
Q5301
APRT
57
GATE
RI
58
59
60
UP
CONVERTER
SW
Q7001
POWER
Q5001
SYSTEM
MPDULATOR FAILURE
RESET
TC2100 DET.
D E
RL901
POWER SW RELAY
Q2101~Q2103
VIDEO
SELECTOR SW
Q9002
NJM2279M
TUNER
PACK
20 HPMUT
P65/WR P41/AD1
19 MCRST
P66/WAIT P40/AD0
18 SCL
P67/ASTB P27/SCK0
17 FPSO
P30/TA0 P26/SO0
16 SDA
P31/TA1 P25/SI0
15 FPHS
P32/TA2 P24/BUZ
14 MCRDY
Q7008
P33/TI1 P23/PCL
13 MCCLK
P34/TI2 P22/SCK1/ADCK1
12 MCMDA
MPD784225GC
P35/TI00 P21/SO1/TXD1
11 MCSDA
P36/TI01 P20/SI1/RXD1
10 DSPCLK
P37/EXA P72/SCK2/ASCK2
9 DSPDA
P120/RTP0 P71/SO2/TXD2
8 DSI
P121/RTP1 P70/SO2/RXD2
7
P122/RTP2 AVREF1
6
P123/RTP3 P131/ANO1
5
P124/RTP4 P130/ANO0
4
P125/RTP5 AVSS
BAND
3
P126/RTP6 P17/ANI7
2
P127/RTP7 P16/ANI6
1
RESET P15/ANI5
INITIA-
+5V
+5V
LIZING
X7001
Q1181
RDS
DECODER
F G
RL5803
Q5803
RL5802
Q5802
RL5801
Q5801
RL5804
Q5804
HEADPHONE DET. SW
Q4409,Q4410
HEADPHONE
MUTE SW
FOR HP
Q7501
DSP IC
CS494003
+5V
INITIALIZING
FOR BAND
STEP
TX-L55/LR552
H
Q801
SUB MICROPROCESSOR
MPD780232GC-091-8BT
Q7800
DIR/CODEC IC
AK4588VQ