Read Sharp AL-1622 (serv.man16) Service Manual online
AL-1611/AL-1622
ELECTRICAL SECTION
13 – 3
22
A14
A14
OUT
Address bus 14
System bus
23
A15
A15
OUT
Address bus 15
System bus
24
A16
A16
OUT
Address bus 16
System bus
25
A17
A17
OUT
Address bus 17
System bus
26
A18
A18
OUT
Address bus 18
System bus
27
A19
A19
OUT
Address bus 19
System bus
28
VSS
POW
Ground pin
29
A20
A20
OUT
Address bus 20
System bus
30
/IRQ5
/SPFCOVER
IN
Interruption request 5
SPF cover sensor interrup-
tion
tion
1: Cover close
31
/IRQ6
/OCCOVER
IN
Interruption request 6
OC cover sensor interrup-
tion
tion
0: Cover close
32
/IRQ7
MHP
IN
Interruption request 7
Mirror home position sensor
interruption
interruption
1: Home position
33
/IRQ3
/SPFPAPER
IN
Interruption request 3
S P F p a p e r p a s s s e n s o r
interruption
interruption
0: Paper presence
34
/IRQ2
/CPUSYNC
IN
Interruption request 2
Horizontal sync signal inter-
ruption
ruption
0: Effective
35
VSS
POW
Ground pin
36
VSS
POW
Ground pin
37
/IRQ1
/FW
IN
Interruption request 1
Zero cross interruption
0: Effective
38
/IRQ0
/LOOPINT
IN
Interruption request 0
Loop interruption
0: Effective
39
VCC
POW
Power pin
40
D0
D0
BIDIR
Data bus 0
System bus
41
D1
D1
BIDIR
Data bus 1
System bus
42
D2
D2
BIDIR
Data bus 2
System bus
43
D3
D3
BIDIR
Data bus 3
System bus
44
VSS
POW
Ground pin
45
D4
D4
BIDIR
Data bus 4
System bus
46
D5
D5
BIDIR
Data bus 5
System bus
47
D6
D6
BIDIR
Data bus 6
System bus
48
D7
D7
BIDIR
Data bus 7
System bus
49
D8
D8
BIDIR
Data bus 8
System bus
50
D9
D9
BIDIR
Data bus 9
System bus
51
D10
D10
BIDIR
Data bus 10
System bus
52
D11
D11
BIDIR
Data bus 11
System bus
53
VSS
POW
Ground pin
54
D12
D12
BIDIR
Data bus 12
System bus
55
D13
D13
BIDIR
Data bus 13
System bus
56
D14
D14
BIDIR
Data bus 14
System bus
57
D15
D15
BIDIR
Data bus 15
System bus
58
VCC
POW
Power pin
59
P30
OUT
General port 30
(Not used)
L: Level fixing output
60
TXD1
TXD1
OUT
SCI channel 1 serial trans-
mission
mission
Service connector
UART serial output
61
P32
SDA
ODN
General port 32
EEPROM control
12CBUS data line
62
RXD1
RXD1
IN
SCI channel 1 serial recep-
tion
tion
Service connector
UART input
63
P34
SCL
ODN
General port 34
EEPROM control
12CBUS clock line
64
P35
/FROMUP
IN
General port 35
Service connector
0: Service mode
65
VSS
POW
Ground pin
66
/DREQ0
/DREQ0
IN
DMAC channel 0 external
request
request
Mirror and SPF motor accel-
eration/reduction control
eration/reduction control
0: Request effective
67
VSS
POW
Ground pin
Pin No.
Pin name
Signal name
I/O
Function
Purpose
Descriptions
(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
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