Read Sharp UP-X500 (serv.man4) Service Manual online
UP-X500U
CIRCUIT DIAGRAM
7 – 17
XWR#
fmemr#
ROMCS#
SD7
SD6
SD5
SD4
SD3
SD2
SD1
SD0
SA18
SA8
SA0
SA3
SA16
SA1
SA17
SA4
SA15
SA9
SA10
SA14
SA5
SA11
SA12
SA13
SA6
SA2
SA7
SA17
SA0
SD3
SA5
SD0
SA8
SA15
SA16
SA2
SD2
SD1
SD5
SD1
SD7
SA18
SA10
SD3
ROMCS#
SD0
SA7
SA19
SA10
SD4
SA12
SA5
SA18
SA9
SA3
SA13
SD6
fmemr#
SA14
SA15
SA0
iow#
SA2
SA7
SA4
SA9
SA13
SD6
SA14
SD2
SD5
SA3
SA6
SA16
aen
SD4
SA4
SA1
XRD#
SA12
ob#
SD7
SA6
SA8
SA11
SA11
SA1
SA17
RESET
XWR#
HELP_CS#
VCC
VCC3
VCC3
VCC
VCC3
VCC
VCC3
VCC
VCC3
XRD#
16,27,28
ROMCS#
16
XWR#
16,27,28
SA[0..19]
16,27,28
SD[0..15]
16,27,28
RESET
10,27
HELP_CS#
16
XBUS interface
FLASH socket
FLASH ROM
(s
ock
e
t
ͅ
)
VCC3
VCC3
VCC3
VCC3
HelpBoard
BIOS
VCC3
IOaddress=0x80-0x81
CN27
IC160-0324-350
IO0
13
A0
12
IO1
14
A1
11
IO2
15
A2
10
IO3
17
A3
9
IO4
18
A4
8
IO5
19
A5
7
IO6
20
A6
6
IO7
21
A7
5
A8
27
A9
26
A10
23
A11
25
A12
4
A13
28
A14
29
A15
3
A16
2
OE#
24
CE#
22
WE#
31
A17
30
A18
1
VCC
32
GND
16
C583
22PF
2
1
C581
0.1UF
2
1
IC54
SST39SF040-70-4C-NH(UP-X500)
IO0
13
A0
12
IO1
14
A1
11
IO2
15
A2
10
IO3
17
A3
9
IO4
18
A4
8
IO5
19
A5
7
IO6
20
A6
6
IO7
21
A7
5
A8
27
A9
26
A10
23
A11
25
A12
4
A13
28
A14
29
A15
3
A16
2
OE#
24
CE#
22
WE#
31
A17
30
A18
1
VCC
32
GND
16
C582
0.1UF 2
1
IC109D
74LVA32(TSSOP)
12
13
11
14
7
R318
10K
1
2
IC109B
74LVA32(TSSOP)
4
5
6
14
7
CN28
52465-3691
1
1
3
3
5
5
7
7
9
9
11
11
13
13
15
15
17
17
19
19
20
20
2
2
4
4
6
6
8
8
10
10
12
12
14
14
16
16
18
18
21
21
22
22
24
24
23
23
25
25
27
27
29
29
31
31
33
33
35
35
26
26
28
28
30
30
32
32
34
34
36
36
IC106C
74LVA04(TSSOP)
5
6
14
7
IC109C
74LVA32(TSSOP)
9
10
8
14
7
R449
0
1
2
R450
10K
1
2
IC109A
74LVA32(TSSOP)
1
2
3
14
7
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
17/33
BIOS
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