Microprocessor Section - Onkyo TX-SA705 Service Manual

A
SCHEMATIC DIAGRAMS-5 (SD-5)

MICROPROCESSOR SECTION

NADG-9269-1(2/2)
1
U17
DAC AND
MICROPROCESSOR
PC BOARD
2
3
4
5
<Note>
SD-x:XY is short for Shcematic Diagram-x and
each socket's location, X=A to H, Y=1 to 5.
B
TO NAETC-9161
SD-12:C5
P7303A P701A
LIST
Q2415
OPTF
VOLLED
~DIRINT
~DACRST
~DIRCS
~DACCS
SPDIFSW
DIGCLK
DIGSDO
DIGSDI
PCMSW
~DSP3RST
DSDRCSW
~DSP3INT
~DIRSW
~DSP2RST
~DSP2INT
DSP1DEC
~DSP1RST
DSP1NIC
~DSP1INT
MEQMUT
~DSP3CS
~DSP2CS
~DSP1CS
+5VDSP
+3.3VDSP1
+3.3VDSP
GND_DG1
-12V
+12V
VOLIN_FL
SELSTB_5V
GNDDG
SELCLK_5V
SELDAT_5V
VOLIN_FR
DACCL
DACSWL
DACSL
DACSR
DACSBL
DACSBR
ADLT
ADRT
GND_LPF
NJM4580M-D
Q1701:A
123J
392J
C1709 C1711
R1711 R1713
270K 22K
47/25 R1717
56K 470K 2
1
R1703 R1705 C1705
R1707
3
+ 100
C1707
330 C1703
102J 220/10
C1704 C1708
R1704
102J 220/10
+
5 7
R1706 R1708
330 C1706
56K 470K
47/25 6
C1717 270K
R1712 R1714
102J
22K
C1712
C1710
123J 392J
Q1701:B
NJM4580M-D
C
TO NADIS-9148
SD-12:H2
R1801
10(12W)
+5.0V
TA48033AF
Q1912
3 O 1
I
+3.3V
+6.8V
-6.8V
10/50
C1715
+
D1701
UDZS6.8B
R1718
+
100
C1716
10/50
P303
TO NAAF-9142
SD-1:C1
TX-SR705/SA705
D
TO NAVD-9270
TO TUNER UNIT
SD-10:D1
TX-SR705 Only
P101A
+
C1801
100/25
D1801 D1802 D1803
RL1N4003 x3
TX-SR705 Only
P301
P302
TO NAAF-9142 TO NAAF-9142
SD-1:D1
SD-1:F1
TO
S
P2004A
+3.3V
R2701
27K
220
R2703
CECTR
CECIN
0
R2704
CEC_IO
220
R2702
CECOUT
Q2701
RN1402
SRRX
RDSCLK_5V
RDSDAT_5V
Q260
DC, P
Type O
Q260
DC Type
JL6402B P3
TO NAETC-9144
SD-2:B2