Sharp AL-1611 Service Manual page 79

Pin No. Pin name Signal name
68 VSS
69 /CS5
70 /DREQ1 /DREQ1
71 P63 POFFR
72 P27 /ESPAGE
73 P26 /PCLPAGE
74 P25 /FAXPAGE
75 P24 /READY
76 P23 /PWOFF
77 P22 /SCANSP
78 P21 /SCANST
79 P20 /PRSTART
80 /WDTOVR
81 /RES
82 NMI
83 /STBY
84 VCC
85 XTAL
86 EXTAL
87 VSS
88 â CPUCLK
89 VCC
90 /AS /AS
91 /RD /RD
92 /HWR /HWR
93 /LWR /LWR
94 PF2 /TMEN
95 PF1 PMD
96 PF0 MMD
97 P50 /MMRDY
98 P51 /PMRDY
99 VSS
100 VSS
101 P52 /PRLINE
102 P53 /SCLINE
103 AVCC
104 VREF
105 AN0 RTH
106 AN1
107 AN2
108 AN3 TONER
109 AN4
110 AN5
111 DA0 DA0
(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
I/O
POW Ground pin

OUT Area 5 chip select
IN DMAC channel 1 external
request
OUT General port 63
IN General port 27
IN General port 26
IN General port 25
OUT General port 24
OUT General port 23
OUT General port 22
OUT General port 21
OUT General port 20

OUT Watch dog timer overflow

IN System reset

IN Non-maskable interruption
request

IN Stand-by
POW Power pin

IN Oscillation pin

OUT Oscillation pin
POW Ground pin
OUT System clock
POW Power pin
OUT Address strobe
OUT Lead strobe
OUT Highlight enable
OUT Row write enable
OUT General port F2
OUT General port F1
OUT General port F0
IN General port 50
IN General port 51
POW Ground pin
POW Ground pin
OUT General port 52
OUT General port 53
POW Analog power pin
POW Analog reference pin
IN Analog input 0

IN Analog input 1

IN Analog input 2
IN Analog input 3

IN Analog input 4

IN Analog input 5
OUT Analog output 0
AL-1611/AL-1622 ELECTRICAL SECTION
Function Purpose
(Not used)
Lifter and separator motor
acceleration/reduction con-
trol
Power off relay control
ERDH option page signal
detection
PCl operation page signal
detection
F A X o p ti o n p a g e s i g n a l
detection
Machine ready signal
Power off signal
Scan stop signal
Scan start signal
Print start signal
System reset
System reset
(Not used)
(Not used)
Oscillator (19.6608MHz)
Oscillator (19.6608MHz)
System clock
System bus
System bus
System bus
System bus
Toner motor drive control
Polygon motor drive control
Main motor drive control
Main motor ready signal
Polygon motor ready signal
Print line signal
Scan line signal
Fusing thermistor tempera-
ture detection
(Not used)
(Not used)
Toner sensor
(Not used)
(Not used)
CCD reference + side
13 – 4
Descriptions
L: Select
0: Request effective
H: AC switch OFF
0: Page effective
0: Page effective
0: Page effective
L: Machine ready state
L: Power interruption detect-
ing state
L: Scanning operation inter-
ruption
L: Scanning operation effec-
tive
L: Printing effective
L: System restart
0: Power on reset
1: Level fixing input
1: Level fixing input
19.6608MHz clock output
L: Address effective
L: Lead effective
L: Highlight effective
L: Row write effective
L: Rotating
H: Rotating
H: Rotating
0: Rotation stable state
0: Rotation stable state
L: Printing effective
L: Scanning operation effec-
tive
5V: Toner empty