Read Sharp UP-X500 (serv.man4) Service Manual online
UP-X500U
CIRCUIT DIAGRAM
7 – 33
VCC3
VCC3
+3B
+3B
VCC3
VCC3
VCC3
VCC3
+3B
+3B
+3B
VCC3
VCC3
VCC3
74series
DDRPWROK
PWRSWITCH
BTON
help
help
IC100
IC101
IC102
IC106
H8
IC105
help
help
IC107
IC108
IC109
BEEP_OFF
FP_EN
PS_ON
ACDOWN#
RESET
RESET
RESET
RESET
RESET
RESET
74LVA08
74LVA00
+3B
74LVA32
74LVC04
74LVA04
74LVA08
74LVA32
7
4LVA32
help
H8
H8
H8
H8
H8
+3B
+3B
CPUPWROK
PWROK
IC101B
74LVA00(TSSOP)
4
5
6
14
7
C718
0.1UF
2
1
C662
0.1UF
2
1
C661
0.1UF
2
1
C667
0.1UF
2
1
C663
0.1UF
2
1
C664
0.1UF
2
1
C666
0.1UF
2
1
C660
0.1UF
2
1
IC102D
74LVA32(TSSOP)
12
13
11
14
7
IC101A
74LVA00(TSSOP)
1
2
3
14
7
IC116D
74LVA08(TSSOP)
12
13
11
14
7
C665
0.1UF
2
1
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
33/33
Odd 74series
IC116
74VA08
FP_EN
FP_EN
BEEN
EXCOM
EXCOM
EXCOM
EXCOM
BC
BC
LAN
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