Read Sharp XE-A303 (serv.man4) Service Manual online
XE-A303 (V)
HARDWARE DESCRIPTION
– 8 –
P93
7
I
P9_3/DA0/TB3IN
KR3
Out L
KEY RETURN SIGNAL
P94
6
I
P9_4/DA1/TB4IN
KR4
Out L
KEY RETURN SIGNAL
P95
5
I
P9_5/ANEX0/CLK4
KR5
Out L
KEY RETURN SIGNAL
P96
4
I
P9_6/ANEX1/SOUT4
KR6
Out L
KEY RETURN SIGNAL
P97
3
I
P9_7/#ADTRG/SIN4
KR7
Out L
KEY RETURN SIGNAL
P100
128
I (A/D)
P10_0/AN0
HTEMP0
In (A/D)
HEAD TEMPERATURE
MONITOR 0
MONITOR 0
P101
126
I (A/D)
P10_1/AN1
HTEMP1
In (A/D)
HEAD TEMPERATURE
MONITOR 1
MONITOR 1
P102
125
I (A/D)
P10_2/AN2
VPTEST0
In (A/D)
VH0 MONITOR
P103
124
I (A/D)
P10_3/AN3
VPTEST1
In (A/D)
VH1 MONITOR
P104
123
I
P10_4/AN4/#KI0
P104
H
In
MODEL JUDGMENT
P105
122
O
P10_5/AN5/#KI1
LCDON
L
Out L
LCD DISPLAY ON
P106
121
O
P10_6/AN6/#KI2
LCDRW
L
Out L
LCD RD/WR
P107
120
O
P10_7/AN7/#KI3
LCDRS
L
Out L
LCD CONTROL
P110
119
O
P11_0
#LAT0
H
In
DATA LATCH SIGNAL
P111
118
O
P11_1
#STB01
H
In
PRINTER STB SIGNAL
P112
117
O
P11_2
#STB02
H
In
PRINTER STB SIGNAL
P113
116
O
P11_3
#STB03
H
In
PRINTER STB SIGNAL
P114
115
O
P11_4
#LAT1
H
In
DATA LATCH SIGNAL
P115
114
O
P11_5
#STB11
H
In
PRINTER STB SIGNAL
P116
113
O
P11_6
#STB12
H
In
PRINTER STB SIGNAL
P117
112
O
P11_7
#STB13
H
In
PRINTER STB SIGNAL
P120
84
O
P12_0
KS0
H
Out L
KEY SCAN SIGNAL
P121
83
O
P12_1
KS1
H
Out L
KEY SCAN SIGNAL
P122
82
O
P12_2
KS2
H
Out L
KEY SCAN SIGNAL
P123
81
O
P12_3
KS3
H
Out L
KEY SCAN SIGNAL
P124
80
I
P12_4
MODR
IN
MODE SW RETURN SIGNAL
P125
64
I
P12_5
FRDY
IN
FROM RDY/BUSY
P126
63
O
P12_6
ROMBANK
L
Out L
BANK SWITCH ROM
P127
62
O
P12_7
RAMBANK
L
Out L
BANK SWITCH ROM
P130
57
I
P13_0
(NU) (KR8)
Out L
(KEY RETURN SIGNAL
RESERVE)
RESERVE)
P131
56
I
P13_1
(NU) (KR9)
Out L
(KEY RETURN SIGNAL
RESERVE)
RESERVE)
P132
55
I
P13_2
(NU) (KR10)
Out L
(KEY RETURN SIGNAL
RESERVE)
RESERVE)
P133
54
I
P13_3
(NU) (KR11)
Out L
(KEY RETURN SIGNAL
RESERVE)
RESERVE)
P134
49
I
P13_4
RJR
In
R/J KEY RETURN
P135
48
O
P13_5
BLON0
L
Out L
LCD BACKLIGHT ON
P136
47
O
P13_6
BLON1
L
Out L
LCD BACKLIGHT ON
P137
46
O
P13_7
LCDE
L
Out L
LCD ENABLE
P140
12
O
P14_0
VPON
L
Out L
24V CIRCUIT ON/OFF
P141
11
O
P14_1
DRWER
L
Out L
DRAWER OPEN SIGNAL
VREF
1
VREF
AVCC
AVCC
2
AVCC
AVCC
BYTE
13
I
BYTE
BYTE
In
CNVSS
14
I
CNVSS
CNVSS
In
RESET
17
I
RESET
RESET#
In
CPU RESET
XOUT
18
O
XOUT
XOUT
Out L
MAIN CLOCK
VSS
19
VSS
VSS
XIN
20
I
XIN
XIN
In
MAIN CLOCK
VCC1
21
VCC1
VCC
VCC1
37
VCC1
VCC
VSS
39
VSS
VSS
VCC2
85
VCC2
VCC
VSS
87
VSS
VSS
AVSS
127
AVSS
VSS
PORT
PIN No.
I/O
PIN NAME
SIGNAL NAME
INTIAL VALUE
OFF MODE
FUNCTION
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