Onkyo TX-SR502E Service Manual page 66

QQ
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MICROPROCESSOR CONNECTION DIAGRAMS-1
Q7008:MPD784225GC-XXX-8BT(MAIN MICROPROCESSOR)
COMPOSITE
VIDEO-1 OUT
C
S-VIDEO
Y
COMPOSITE
MONITOR OUT
C
S-VIDEO
Y
OUT L
POWER
AMPLIFIER
OUT R
CIRCUIT
SUB WOOFER
PREOUT
Q203
LA7956
Q212
LA7956
S_VIDEO (C SIGNAL)
Q213
TE
LA7956
L 13942296513
S_VIDEO (Y SIGNAL)
VIDEO SELECTOR SWITCH
Q301 BD3817KS
SELECTOR/
VOLUME/
TONE CONTROL
TC74VHC541FT
13
FCS 13
14
RESET 144
15
SCS 135
FA1, FSCDIO 4
12
SCDIN 136
11
FAO, FSCCLK 6
SCCLK 142
Q701
CS494003CQZ
22 CDTT/SDA
DSP
21 CCLK/SCL
Q800 AK4588
DIR, 2CH A/D,
CONVERTER
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.
FINREQ 16
INTREQ 3
SCDOUT 136
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Q201 VIDEO
MUTE
Q205
DRIVER
Q208
Q206
DRIVER
Q207
Q202
COMPONENT VIDEO
VIDEO IN1
CB
Q210
CR
Y
Q211
VIDEO IN2
Q307
CB
CR
Q308
Y
Q312
Q313
MUTE
3
2
3
2
3
2
MUTE 83
CL 84
DATA 85
41 NU
42 NU
Q7002
43 SELMUTE
44 SELCLK
7
45 SELSDO
46
6 ~DIRRST
47
~DIRCS
5
48
~DSPFSC
49
~DSPRST
50 ~DSPCS
8
51
52
9
53
54
55
NU
56
57
PDN 31
58
CDTT/SDA 23
59
RESET
60
Q7001
RESET
8CH D/A
POWER
FAILURE
DETECTION
INT 1
9
8
INT0 80
x ao
y
11
10
CDTO 20
i 13 12
4
3
1 2
Q7003 TC74HCT7007AF
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8
AC IN
Q7006
Q7007
RL242
OUT
CB
CR
RL241
Y
Q306
DRIVER
TUNER
UNIT Q Q
3 6 7 1 3
Q7008
MPD784225GC
-XXX-8BT
MAIN MICRO
PRCESSOR
NU: NO USE
X7001
12.5MHz
u163
16 2
1
.
Q181
BU1924FS
RDS
MPP TYPE
DEMODULATOR
ONLY
TX-SR502/E/8250/HT-R520
2 9 9 4 2 8
RL901
F901
Q921
RL6800
RELAY
DRIVE
Q6601
RELAY
RL6803
DRIVE
Q6602
RELAY
DRIVE
RL6804
POWER SUPPUY FOR
AMPLIFIER SECTION
T901
LOW
POWER
TRANS.
HIGH
RL6901
+B RL6902
Q6901
RELAY
DRIVE
RL6801
Q6603
RELAY
DRIVE
1 5 0 5 8 2 9 9 4
6
Q7502
7
SUB-
8
MICRORPOCESSOR
9
MPD70232GC-XXX-8BT
10
HPMUT 20
POWER SUPPLY FOR
~MCRST 19
VIDEO SECTION
MCCLK 18
+12V
Q6405
MCSDO
17
78M12
MCSDI 16
MCRDY 15
PURE POW 14
NU 13
NU 12
R6381,Q6313
NU 11
THERMAL
DSP_CLK 10
DETECTION
9
DSP_DA
CIRCUIT
DSP_SDI 8
AVREF1 7
+5V
NU 6
R7003,7004
THERMPRO 5
DESTINATION
AVSS 4
SET UP
BAND 3
2
VOLH
1
PROTECT
Q6703
GATE
CIRCUIT
R7080
m
R7180
R7179
co
R7079
R7178
R7078
DESTINATION
SET UP
9 9
POWER
TRANS.
L
FRONT-A
R
SPEAKERS
CENER
SPEAKER
L
SURROUND
SPEAKERS
R
AMPLIFIER
SECTION
VOLTAGE
SELECTOR
L
FRONT-B
R
+B
2 8 9 9
DETECTION
SWITCH
P7501
PHONES
Q6407
+22V
R6380,Q6303
THERMAL
DETECTION
CIRCUIT
OUTPUT LEVEL
DETECTION
Q6701,6702
DC DETECTION
Q6070~6074
CURRENT
DETECTION
POWER AMPLIFIER
CIRCUIT