Onkyo A-9555 Service Manual page 10

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3 7 6 3 1 5 1 5 0
A
SCHEMATIC DIAGRAMS-3
MICROPROCESSOR SECTION
NADIS-8709
U05
1 MICROPROCESSOR PC BOARD
VOL+5V
VOLGND
+12V
RLGND
RLGND
DGND
Q802
S-812C56AUA-C3K
RLGND
L801
RLGND
NCH-1479
+9V 2 3
I O
ACPOWER
POFF
2
HS
VPP
T E
L 1 3 9 4 2 2 9 6 5 1 3
NAETC-8718 VDD
RESET
U12 SI
SO
SPEAKER SELECTOR
PC BOARD GND
SPEAKERS
A+B B A OFF
R877 R876
820 470
R875
2 4
1
390
8 5
9 6
S801
10 7
3
INPUT R846 R845
R847
R844
SELECTOR 1.2K
1K
680 1.8K
12 2
S802
11 3
16 13
10 4
15 14
9 5
8 6
18K
R841
R850
330 270
www
R851
NC
S803
.
4
http://www.xiaoyu163.com
B
Q822
RN1407
R802
D804
220K
1SS352
D801
1SS352
R803
D802
220K
1SS352
MUT+5V
D803
1SS352
R821 220
STB 17
P36
R822 47
18
P20/SI30
R823 47 19
P21/SO30
R824 47
20
P21/SCK30
R825 220
DATA 21
P23/RXD0
R826
CLK 220 22
P24/TXD0
R827 47
23
P25/ASCK0
C809 24
VDD1
104Z
25
MPC780023AGC-176-8BC-A
AVSS
R828 1K
PRT 26
P17/ANI7
DCPRT R829 1K 27
P16/ANI6
28
P15/ANI5
R834 VOLAD R830 1K 29
P14/ANI4
2.7K
+5V R831 33K
30
P13/ANI3
R833 33K
31
P12/ANI2
32
P11/ANI1
R883
R835
2.7K
10K
C810 104Z
C819 101
R836
2.7K
C811
104Z
C812
1/50
Q813
RN1404
R837
S804
x a o u 1 6 3
PURE
y
DIRECT
R838
i
390
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8 9
C
NAETC-8719
U13
STANDBY LED PC BOARD
P802A
NC
Q804 Q805
Q803
RN1402 RN1402
64
P47/AD7
Q Q
63
P46/AD6
3 7 6 3 1 5
62
P45/AD5
61
P44/AD4
60
P43/AD3
59 R870 1K TONE RL
P42/AD2
R869 1K
58 MAIN_IN
P41/AD1
57 R886 0
Q801
P40/AD0
220
56 R866 VOLDN
P67/ASTB
R865 220
55
MICROPROCESSOR
P66/WAIT
54 R864 1K ACPOWER
P65/WR
R861 220
53
P64/RD
R860
52 220 HPMUT
P75/BUZ
51 NF_MUTE
P74/PCL
50
P73/TI51/TO51
49
P72/TI50/TO50
R859 1K
R858 1K
R857 1K
R868 10K
R867 10K
MUT+5V
R854
220
HPIN
X801
4MHz
Q814
RN2402
R891
0 R894
0
U801
GP1UM281XKVF
R852
22
1
2
3
c o
.
2 4
9 8
D
D806 - 815 : SEL2E10C-F
Q806 Q807 Q808 Q809 Q810
RN1402 RN1402 RN1402 RN1402 RN1402
U07 VOLUME PC BOARD
7
VOLUME
1 5 0 8 9 2 4 9
NADIS-8712
VOLUP
Q815 TA7291S
AMUT
2SC2712-GR
SPBRL
SPARL
VOL+5V
VOLGND
RI
P212B m
To NAAF-8708(2/2)
(SD-2 : D4)
NAETC-8713
U08
VOLUME LED PC BOARD
A-9555
2
9 9
E
Q811
Q812
RN1402 RN1402
P782B
VOLLED
R783
VOLAD
1K DGND
VOL5V
OUT2
OUT1
8 2 9 9
R872
150
VOLAD
Q816
OUT2
OUT1
P782A
D781
VOLUME