Technics SX-KN6500

MAIN CPU CIRCUIT
A
SCHEMATIC DIAGRAM-1
NOTE:
The number which noted at the connectors on the schematic diagram as
"SCHEMATIC DIAGRAM-1" or "SCHEMATIC DIAGRAM-2"
indicates the schematic diagram serial number located on the left corner in the schematic diagram.
A
B
Z1
4.7Kx8
R40
4.7KR17
470
Z2
47x4
Y
7
6
5
4
3
2
1
0
VCC
A0
A1
A2
CS2
CS3
CS1
7
9
10
11
12
13
14
15
1
2
3
4
5
6
16
VSS
8
+3.3D
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
2Y3
VCC
9
10
11
12
15
14
13
7
6
5
4
1
2
3
16
GND
8
+3.3D
9
10
11
12
15
14
13
7
6
5
4
1
2
3
16
8
+3.3D
X
X
Y
W
Q
R
S
GND VCC
1 2 3 4 5
TC7SH02FU
(2 INPUT NOR GATE)
+3.3D
IC5
TC74VHC138F
C1
R46 4.7K
R1
1K
R2
100K
R4
4.7K
Q1
2SB709AR
Q2
2SD601AQ
+3.3D
D3
MA111TX
0.1
IC1
TC74VHC139F
C8
0.1
IC3
TC74VHC139F
C2
0.1
IC2
D[0-31]
A[0-25]
FDC.DRQ
BUSCLK
RE
R/NW
WE3
WE2
LCD.WAIT
DSP.RDY
SNS
RDD.INDEX
PP.INT
TOC.SNS
FDC.INT
HDD.INT
DSP.FLAG0
ADSPCS
LCD.CS
FDC.CS
JIGU.CS
TGCS
HDD.LOCS
PQRT.EXP
ADSPAB
FDC.DACK
EXP.CS1
EXP.CS0
HDD.CS
LORST
CP.GATE
DSP.RST
SELF.LED
CP.CLK
FDC.TC
PMUT
MACSEL
PC.TX
PC.RX
MIDI.TX
MIDI.RX
C P. DATA
CLK1
(3 TO 8 DECORDER)
(2 TO 4 DECORDER)
(2 TO 4 DECORDER)
R45
1K
D2
MA111TX
C3
0.22
2Y2
2Y1
2Y0
2E
2DA
2DB
1Y3
1Y2
1Y1
1Y0
1E
1DA
1DB
2Y3
VCC
GND
2Y2
2Y1
2Y0
2E
2DA
2DB
1Y3
1Y2
1Y1
1Y0
1E
1DA
1DB
+3.3D