Main Digital Assy (2/8) - Pioneer SC-LX90 Service Manual

1

10.18 MAIN DIGITAL ASSY (2/8)

A
DHDI
DHCK
O
1/8
DHREQ
M232RX
B
UART1
O
1/8
DS232SW
RFUNLK5
C
XDRST5
O
1/8
DACSD
DIDI
DICK
O
1/8
DSDDIRECT
D
XSRC
E
F
O
2/8
38
1
2
C129
DHDI
TC74VHC125FTS1
DHCK
DHREQ
UART1
M232RX
DS232SW
(6/6)
RFUNLK5
C130
XDRST5
DACSD
DIDI
DICK
C131
DSDDIRECT
XSRC
XM
GNDD
O O
4/8 1/8
O
5/8
SC-09TX
2
3
V+3DS
0.1/16 YB
IC108 (1/4)
14
2 3
1
7
IC108 (2/4)
14
5 6
4
7
IC108
(3/4)
14
9 8
10
7
IC108
(4/4)
14
12 11
13
7
IC110 IC110
(5/6)
14 14
12 10
13 11
7 7
0.1/16 IC109
YB
(1/4)
14
2 3
1
7
IC109
14 (2/4)
5 6
4
7
IC109
(3/4)
14
9
8
10
7
14 IC109 (4/4)
12 11
13 TC74VHC125FTS1
7
IC110
0.1/16
14
(2/6)
XDSDDIRECT
4
YB
3
7
IC110
(3/6)
14
6
5
7
IC110
(4/6)
14
8
9
7
IC110
(1/6)
14
2
1
7
TC74VHC04FTS1
DAC
O O
1/8
3
4
CONT
DDI
DCLK
O
8/8
DREQ
D232RX
O
3/8
RFUNLK
XDRST
DACCS
DACDI
DACCLK
SRC
XXM
1/8
4
UNLK
XSPD
HDMUTE
XHDM
IEMUTE
XIEEE
XXM
XSMU
HRMUTE
XHR
XMMU
Z2SP
ZUNLK
XZSPD
XZIEE
XZHD
XZ2XM
XZ2HR
XZSM
XZ3XM
XZ3HR
(
O
3/8