Read Sharp UP-X300 (serv.man45) Service Manual online
UP-X300V
CIRCUIT DIAGRAM & PWB LAYOUT
5 – 24
prn_pe
prn_strob#
prn_ack#
prn_autofd#
prn_slct
prn_busy
prn_slct
prn_pe
prn_d7
prn_d0
prn_ack#
prn_d0
prn_error#
prn_d1
prn_d2
prn_strob#
prn_d3
prn_d5
prn_d4
prn_d6
prn_d6
prn_init#
prn_slctin#
prn_d1
prn_d3
prn_d5
prn_d2
prn_d4
prn_autofd#
prn_busy
prn_d7
prn_slctin#
prn_error#
prn_init#
VCC
VCC
PVCC
SuperI/O
(3/3)
Floppy
I/F
Pallarell
I/F
Pallarell
connector
X500
/X300
ྚ
IC42C
SIO10N268
DRVDEN0
1
GP11/DRVDEN1/FDC_PP
2
MTR0~
3
DSKCHG~
4
DS0~
5
DIR~
8
STEP~
9
WDATA~
10
WGATE~
11
HDSEL~
12
INDEX~
13
TRK0~
14
WRTPRT~
15
RDATA~
16
ACK~
78
BUSY
77
PE
76
SLCT
75
PD7
73
PD6
72
PD5
71
PD4
69
PD3
68
PD2
67
PD1
66
PD0
65
SLCTIN~
64
INIT~
63
STROBE~
81
ALF~
80
ERROR~
79
CN42
C03-26BG1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
25
26
24
BR121
1K-4
1
8
2
7
3
6
4
5
C559 270PF
2
1
C554 270PF
2
1
C558 270PF
2
1
C553 270PF
2
1
C557 270PF
2
1
C552 270PF
2
1
C556 270PF
2
1
C551 270PF
2
1
R302
1K
1
2
BR122
4.7K-4
1
8
2
7
3
6
4
5
R303
4.7K
1
2
BR124
33-4
1
8
2
7
3
6
4
5
R304
33
1
2
C555 390PF
2
1
BR123
33-4
1
8
2
7
3
6
4
5
D33
1SS355
A
K
A
B
C
D
876
5
4
3
21
1
2
3
4
5
6
7
8
D
C
B
A
A
B
C
D
876
5
4
3
21
1
2
3
4
5
6
7
8
D
C
B
A
A
B
C
D
876
5
4
3
21
1
2
3
4
5
6
7
8
D
C
B
A
A
B
C
D
876
5
4
3
21
1
2
3
4
5
6
7
8
D
C
B
A
24/33
Super I/O P
allarell I/F
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