Read Sharp AR-161 (serv.man15) Service Manual online
Pin No.
Pin name
Signal name
I/O
Function
Purpose
Descriptions
74
P25
/FAXPAGE
IN
General port 25
FAX option page signal
detection
detection
0: Page effective
75
P24
/READY
OUT
General port 24
Machine ready signal
L: Machine ready state
76
P23
/PWOFF
OUT
General port 23
Power off signal
L: Power interruption
detecting state
detecting state
77
P22
/SCANSP
OUT
General port 22
Scan stop signal
L: Scanning operation
interruption
interruption
78
P21
/SCANST
OUT
General port 21
Scan start signal
L: Scanning operation
effective
effective
79
P20
/PRSTART
OUT
General port 20
Print start signal
L: Printing effective
80
/WDTOVR
—
OUT
Watch dog timer overflow
System reset
L: System restart
81
/RES
—
IN
System reset
System reset
0: Power on reset
82
NMI
—
IN
Non-maskable interruption
request
request
Reservation
1: Level fixing input
83
/STBY
—
IN
Stand-by
Reservation
1: Level fixing input
84
VCC
POW
Power pin
85
XTAL
—
IN
Oscillation pin
Oscillator (19.6608MHz)
86
EXTAL
—
OUT
Oscillation pin
Oscillator (19.6608MHz)
87
VSS
POW
Ground pin
88
â
CPUCLK
OUT
System clock
System clock
19.6608MHz clock output
89
VCC
POW
Power pin
90
/AS
/AS
OUT
Address strobe
System bus
L: Address effective
91
/RD
/RD
OUT
Lead strobe
System bus
L: Lead effective
92
/HWR
/HWR
OUT
Highlight enable
System bus
L: Highlight effective
93
/LWR
/LWR
OUT
Row write enable
System bus
L: Row write effective
94
PF2
/TMEN
OUT
General port F2
Toner motor drive control
L: Rotating
95
PF1
PMD
OUT
General port F1
Polygon motor drive control
H: Rotating
96
PF0
MMD
OUT
General port F0
Main motor drive control
H: Rotating
97
P50
/MMRDY
IN
General port 50
Main motor ready signal
0: Rotation stable state
98
P51
/PMRDY
IN
General port 51
Polygon motor ready signal
0: Rotation stable state
99
VSS
POW
Ground pin
100
VSS
POW
Ground pin
101
P52
/PRLINE
OUT
General port 52
Print line signal
L: Printing effective
102
P53
/SCLINE
OUT
General port 53
Scan line signal
L: Scanning operation
effective
effective
103
AVCC
POW
Analog power pin
104
VREF
POW
Analog reference pin
105
AN0
RTH
IN
Analog input 0
Fusing thermistor
temperature detection
temperature detection
106
AN1
—
IN
Analog input 1
Reservation
107
AN2
—
IN
Analog input 2
Reservation
108
AN3
TONER
IN
Analog input 3
Toner sensor
5V: Toner empty
109
AN4
—
IN
Analog input 4
Reservation
110
AN5
—
IN
Analog input 5
Reservation
111
DA0
DA0
OUT
Analog output 0
CCD reference + side
112
DA1
DA1
OUT
Analog output 1
CCD reference – side
113
AVSS
POW
Analog ground pin
114
VSS
POW
Ground pin
115
TCLKD
LFTCLK
IN
Timer clock external input
Separator motor step count
Separator motor clock input
116
TIOCA2
TMCLK
OUT
Timer clock external output
Toner motor clock
960Hz clock output
117
TCLKC
SFTCLK
IN
Timer clock external input
Shifter motor step count
Shifter motor clock input
118
TIOCA1
PMCLK
OUT
Timer clock external output
Polygon motor clock
2078.74Hz clock output
119
TCLKB
SPFCLK
IN
Timer clock external input
SPF motor step count
SPF motor clock input
120
TCLKA
MIRCLK
IN
Timer clock external input
Mirror motor step count
Mirror motor clock input
121
/DACK1
—
OUT
DMAC channel 1
acknowledge
acknowledge
Reservation
L: Acknowledge effective
122
/DACK0
—
OUT
DMAC channel 0
acknowledge
acknowledge
Reservation
L: Acknowledge effective
123
MD0
—
IN
Operation mode setting pin 0
Operation mode setting
(MODE 4)
(MODE 4)
Operation mode 4
(Pin descriptions) IN: Input pin OUT: Output pin BIDIR: Bi-directional pin ODN: Open drain output pin TR1: 3-state output pin POW: Power pin
AR-161
AR-160/161 FM/E [13] ELECTRICAL SECTION 12/1/1998
13 – 4
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