Technics SX-PR603

TC
TRK0
W GATA
W DATA
(ENDB1) ME3
(ENBL0) ME2
(CA2) SIDE
(CA1) STEP
(CA0) DIR
WE1
WE0
BGND
DS2
DS1
DS0
INDEX
DS3
DEM0 DEM1 TD0 TD1 XB XA2(24MHz) XA1(IN) DGND RESET DMAAK TCK TMS DVDD(5V)
(SEL)HOLD
BGND
NC (LSTRB)
WPRT
R DATA
DKCG/READY
(5V)AVDD
LPF2 LPF1
AGND
CGP2 CGP1
PCTYP1 PCTYP0
DRV2
ENDKCG
DMARQ
IMT
(5V)DVDD
DGND
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
A2
A1
A0
CS
WR
RD
IC101
17
16
18
19
2526 2324 21 20223132 2930 2728
5958 6160 63 64625352 5554 5756
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
35
36
34
33
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
TC7S14FT85L
IC103
GND VCC
1 2 3 4 5
D72070GF3BE
FLOPPY DISC
CONTROLLER
1
2
3
4
5
6
IP
E
MOT
DIR
STEP
WDT
7
8
9
10
WGA
TRK0
WPRT
RDT
TO
FDD
11
12
13
14
15
SIDE
DCH
+5D
E
E
CN101
TO CPL CIRCUIT (CN1) ON SCHEMATIC DIAGRAM 19 & CPR CIRCUIT (CN1) ON SCHEMATIC DIAGRAM 22
C
D
C110
0.1
+5D
+5D
+5D
C117
0.1
+5D
C111
10P
C114
10P
C115
100P
C116
100P
R110
1M
R114
100
R101
1K
R108
47
X101
24MHz
Z104
47x4
Z103
47x4
Z102
47x4
Z101
1Kx4
ZC103 47P
ZC102 47P
ZC101 47P
C102
6V100
+5D
+5D
+5IP
+5IP2
SUSTAIN
C113
0.022
C112
1800P
C109 4700P
C107
0.033
C106
0.033
C105
0.1
R102
100
IP102
N10
R112
6.8K
C108
0.01
1
2
3
4
5
6
+5IP2
1
+5IP2
2
E
3
E
+5IP
DATA
SCK
E
CPRST
SUS
4
CN108
CN102
IC104
IC102
VCC
GND
Y2
A1
G1
G2
Y1
A2
1
2
3
4
8
7
6
5
VCC
GND
Y2
A1
G1
G2
Y1
A2
1
2
3
4
8
7
6
5
TC7WT241FU
DUAL 3 STATE
BUFFER
TC7WT241FU
+5D
IP101
N10
+5D
+5D
+3.3D
+5D
+5D
R134
4.7K
R103
47
R105
4.7K
R104
47
C103
47P
C104
47P
C101
0.1
R106
4.7K
R107
10K
R115
4.7K
R116
4.7K
R109
100
12
11
10
9
8
7
FRM
LOAD
CP
VDD
VSS
DOFF
CN104
6
5
4
3
2
1
D0
D1
D2
D3
VEE
VLCD
D
C
B
+5IP
C132
0.1P
A
B
C
D
E
G
H
F
CP.GATE
TOC.SNS
CP.CLK
CP.DATA
+5D
R113
10K
Q101
UN511NTX UN511NTX
Q102
Q103
UN5216TX
R111
1K
MAIN 2/4 CIRCUIT
A
SCHEMATIC DIAGRAM-6
DUAL 3 STATE
BUFFER
SCHMITT
TRIGGER
INVERTER
TO INVL CIRCUIT (CN1) ON SCHEMATIC DIAGRAM 31
I
TO INVL CIRCUIT (CN4) ON SCHEMATIC DIAGRAM 31
I
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.