Mother 1 Assy (2/3) - Pioneer SC-LX90 Service Manual

1

10.43 MOTHER 1 ASSY (2/3)

MOTHER1 ASSY
V
A
2/3
(JJ:AWX8771)
(KU/CA:AWX8770)
CN8003
CKS1725
DSP DI
DSP DO
DSP CLK
DSP REQ
DSP RDY
DSP RST
B
DS232TX
232RX
DS232CT
POFF
DFWRITE
232SWDS
UART1
GNDD
GNDD
C8201
STBY
C8202
0.1/16
CN8004
CKS1730
20
HPMUTE
19
Z2 MUTE
18
Z3 MUTE
17
C
PRE MUTE
16
F MUTE
15
C MUTE
14
S1 MUTE
13
SB MUTE
12
S2 MUTE
11
INPUT DT
10
INPUT CLK
9
MODE DT
8
MODE CLK
7
MVOL DT
6
MVOL CK
5
VOL STB1
VOL STB2 4
3
ZVOL DT
ZVOL CLK 2
1
GNDD
GNDD
D
CN8005
CKS1718
RF UNLK
8
DEXP ST
7
DEXP DT
6
DEXP CK
5
DEXP OE
4
GNDD
3
GNDD
2
V+3DS 1
E
Conector Direction
Rear Panel Side
F
V
2/3
96
1
2
V+3UM V+3US
DHDI5
DSDO3
DHCK5
DHREQ5
DSRDY3
XDSRST5
DS232TX3
232RX
232RX
Q8048
DS232CT3
RT1P241M
POFF
POFF
DFWRITE
232SWDS
1SS352
DFWRITE D8048
UART1
R8100
STBY
GNDU
GNDU
DHPMUTE
DZ2MUTE
DZ3MUTE
DPREMUTE
DFMUTE
DCMUTE
DS1MUTE
DSBMUTE
DS2MUTE
R8201
INDT
R8202
INCK
NETV
R8203
MDDT
GNV
R8204
MDCK
R8205
MVDT
R8206
MVCK
R8207
MVS1 V+5V
R8208
MVS2
R8209
ZVDT
R8210
ZVCK
SDC7
DXST
DXDT DXD2
DXCK
DXOE
V+3DS
GNDDS
C8121
1
STB
2
DATA
3
CLOCK
A3IST
4
AZ3IST
A2IST 5
AZ2IST
AMIST 6
AMIST
MDST 7
MODE STB
8
VSS
PORT EXPANDER
BU4094BCFV
IC8121
2
3
W
CN8304
CN8009
2 4 6 8
19P-1.25FJ
1 3 5 7 9
TOL3
Q8050
RT1P241M
R8101
1SS352
D8049
R8134
STBY
R8133
STBY
Q8049
STBY
C
B B
E
GNDU Q8051
2SC4081(QRS) 2SC4081(QRS)
V
3/3
GNDU
HRMUTE
V
3/3
NEWITEM
R8117
IC8115
NJM2505AF
R8115
C8115
1 5
VOUT
VGND
100
2 10/50
GND
R8116
C8116
3 4
V+ VIN
100
10/50
STBY
R8118
CN8010
XKP3064
C7
1
RF UNLK
2
DEXP ST
3
DEXP DT2
4
DEXP CK
5
DEXP OE
6
GNDD GVIP
7
GNDD
8
V+3DS
9
0.1/16
16
VDD
15
OE
14
C7
VMIST
13
VMIST
V2IST
12
VZ2IST
V3IST
11 R8062
VZ3IST
10 R8060
QS'
9 R8061
QS
R8059
GNDU
CN8012
VKN1504
GNDDS
SC-09TX
3
4
10 12 14 16 18
11 13 15 17 19
V+3US
R8078
STBY
GNDU
V
1/3
MUTE
DCDET3
CN8036
STBY
XKP3068
C
GNDHR
GNDHR
1
SCL
E
2 HR_SCL
SDA
3 HR_SDA
RST
4 HR_RST
GNDU
5
HRMUTE
6 GNDHR
HRL
7 HRL
8 GNDHR
GHR
9 GNDHR
HRR
10 HRR
11 GNDHR
HDRD
12 HDSPDIF
13 GNDHR
14 GNDHR
15 NC
16 NC
GHRSP
17 NC
CN8014
VKN1610
NETTX
NET TX (DND)
NETRX
NET RX
NETRS
NET RST
GND
NETW
NET SPDIF
GND
NETL
NET L
GNW
GND
NETR
NET R
GND
NET V
R8252
GND
NC
C8213
NC
C8214 STBY
STBY
GND
GNV
NET Y
NETY
R8214
GND
NETCB
NET CB
GND
NETCR
NET CR
232RX
100k
100k
100k
100k
1 3 5 7 9 11 13 15
2 4 6 8 10 14
12
AE
5/8
CN804
4
V+3UN
N
For N
u-com
Backu
2
N
N
V
1/3
N
N
N
N
N
D
N
D
D
N
N
X
C82
STB
XM
GNDHR
V
3/3
NEWITEM
C8210 STBY
C8207
0.1/16
GNUNT GNDUN
V
1/3
MAIN
R8092
100k
R8093
100k
V+12F
GNDU
17
16 18