Sharp AL-1000 / AL-1010 (serv.man14) Service Manual ▷ View online
PIN No
Signal code
Input/output
Operating
94
SELIN3
Output
Input select 3
95
SELIN2
Output
Input select 2
96
SELIN1
Output
Input select 1
97
PR
Output
Power relay control PR
98
RRS
Output
Resist roller solenoid RPC
99
D-GND
100
D-GND
101
SCLK
Output
Clock Line for EEPROM
102
SDA
Output
Data Line for EEPROM
103
A5V
104
Analog Reference Voltage-A5V
105
RTH
Analog input
Fusing Thirmister
106
107
SIN1
Input
Sensor input 1
108
SIN2
Input
Sensor input 2
109
SIN3
Input
(Not used)
110
SIN4
Input
(Not used)
111
DAH
Analog output
Reference Voltage (High) for CCD
112
DAL
Analog output
Reference Voltage (Low) for CCD
113
AN-GND
114
D-GND
115
NC-pull up
116
NC-pull up
117
NC-pull up
118
NC-pull up
119
MRMT3
Motor output
Mirror Motor Excitement
120
MRMT2
Motor output
Mirror Motor Excitement
121
MRMT1
Motor output
Mirror Motor Excitement
122
MRMT0
Motor output
Mirror Motor Excitement
123
Input
CPU MODE SET <MODE 4> - GND
124
Input
CPU MODE SET <MODE 4> - GND
125
Input
CPU MODE SET <MODE 4> - Vcc
126
NC-pull up
127
DRST
Input
Drum reset detection
128
/CS2
Output
Chip Select for ASIC
AL-1000/1010
12-5
(2) ASIC
1. Outline
Fig. 4 shows the block diagram of the ASIC.
The ASIC is composed of the following three blocks; the image process section, the print control section, and the I/F section.
The image process section processes the image data from the CCD PWB according to the operation mode, such as shading, AE
process, resolution conversion. and zooming.
The print control section outputs the image-processed data during copying to the LSU (Laser unit) in synchronization with writing
timing of the LSU.
The I/F section controls communication of interface (IEEE1284) with the host PC and controls DRAM of send/receive data buffer with
the host PC. (Only for models with the printer function)
The ASIC is controlled by the CPU which writes the operation mode and the set values necessary for each operation mode to the
ASIC control register.
Fig. 4 shows the block diagram of the ASIC.
The ASIC is composed of the following three blocks; the image process section, the print control section, and the I/F section.
The image process section processes the image data from the CCD PWB according to the operation mode, such as shading, AE
process, resolution conversion. and zooming.
The print control section outputs the image-processed data during copying to the LSU (Laser unit) in synchronization with writing
timing of the LSU.
The I/F section controls communication of interface (IEEE1284) with the host PC and controls DRAM of send/receive data buffer with
the host PC. (Only for models with the printer function)
The ASIC is controlled by the CPU which writes the operation mode and the set values necessary for each operation mode to the
ASIC control register.
Scan start
CCD
PWB
PWB
Shading
CCD drive
AE
SRAM control
SRAM
32KB
32KB
x
2
Resolution conversion,
Zooming, lmage
process circuit
Zooming, lmage
process circuit
Print data process circuit
DRAM control
PRINT control
IEEE1284 control
DRAM
6MB or 4MB
6MB or 4MB
LSU
HSYNC
VSYNC
To CPU bus
TO PCI/F
PWB
PWB
ASIC
Image process section
I/F section
Print control section
ASIC control resistor
(Only for models
withthe printer
function)
withthe printer
function)
AL-1000/1010
12-6
2. ASIC input/output
PIN No.
Signal name
IN/OUT
Connected to
Description
1
/SCANSP
IN
CPU (I/O)
Scanner process interrupt signal
2
/PRSTART
IN
CPU
Print start trigger signal
3
TMON
IN
CPU
Toner motor ON/OFF
4
TMCLK
IN
CPU
Toner motor reference clock
5
3.3v
Power
6
CPUAD7
IN
CPU
CPU address bus
7
CPUAD6
IN
CPU
CPU address bus
8
GND
Power
9
CPUAD5
IN
CPU
CPU address bus
10
CPUAD4
IN
CPU
CPU address bus
11
CPUAD3
IN
CPU
CPU address bus
12
CPUAD2
IN
CPU
CPU address bus
13
CPUAD1
IN
CPU
CPU address bus
14
/CPUSYNC
OUT
CPU
Horizontal synchronization signal
15
/INTR
OUT
CPU
Interruption request signal
16
/CPUCS
IN
CPU
CPU chip select signal
17
/RESET
IN
RESET IC
Reset signal
18
5V
Power
19
GND
Power
20
3.3v
Power
21
GND
Power
22
MDATA15
IN/OUT
DRAM
Data bus of DRAM (page memory)
23
MDATA14
IN/OUT
DRAM
Data bus of DRAM (page memory)
24
MDATA13
IN/OUT
DRAM
Data bus of DRAM (page memory)
25
MDATA12
IN/OUT
DRAM
Data bus of DRAM (page memory)
26
MDATA11
IN/OUT
DRAM
Data bus of DRAM (page memory)
27
MDATA10
IN/OUT
DRAM
Data bus of DRAM (page memory)
28
MDATA9
IN/OUT
DRAM
Data bus of DRAM (page memory)
29
MDATA8
IN/OUT
DRAM
Data bus of DRAM (page memory)
30
MDATA7
IN/OUT
DRAM
Data bus of DRAM (page memory)
31
3.3v
Power
32
MDATA6
IN/OUT
DRAM
Data bus of DRAM (page memory)
33
MDATA5
IN/OUT
DRAM
Data bus of DRAM (page memory)
34
GND
Power
35
MDATA4
IN/OUT
DRAM
Data bus of DRAM (page memory)
36
MDATA3
IN/OUT
DRAM
Data bus of DRAM (page memory)
37
MDATA2
IN/OUT
DRAM
Data bus of DRAM (page memory)
38
MDATA1
IN/OUT
DRAM
Data bus of DRAM (page memory)
39
MDATA0
IN/OUT
DRAM
Data bus of DRAM (page memory)
40
/RAS0
OUT
DRAM
RAS signal 0 of DRAM (page memory)
41
/RAS1
OUT
DRAM
RAS signal 1 of DRAM (page memory)
42
/RAS2
OUT
DRAM
RAS signal 2 of DRAM (page memory)
43
/RAS64
OUT
DRAM
(Not used)
44
3.3V
Power
45
/RAS16
OUT
DRAM
(Not used)
46
MAD0
OUT
DRAM
Address bus of DRAM (page memory)
47
GND
Power
48
MAD1
OUT
DRAM
Address bus of DRAM (page memory)
AL-1000/1010
12-7
PIN No.
Signal name
IN/OUT
Connected to
Description
49
MAD2
OUT
DRAM
Address bus of DRAM (page memory)
50
MAD3
OUT
DRAM
Address bus of DRAM (page memory)
51
MAD4
OUT
DRAM
Address bus of DRAM (page memory)
52
MAD5
OUT
DRAM
Address bus of DRAM (page memory)
53
MAD6
OUT
DRAM
Address bus of DRAM (page memory)
54
MAD7
OUT
DRAM
Address bus of DRAM (page memory)
55
MAD8
OUT
DRAM
Address bus of DRAM (page memory)
56
MAD9
OUT
DRAM
Address bus of DRAM (page memory)
57
3.3V
Power
58
MAD10
OUT
DRAM
Address bus of DRAM (page memory)
59
MAD11
OUT
DRAM
Address bus of DRAM (page memory)
60
GND
Power
61
/CAS0
OUT
DRAM
CAS signal of DRAM (page memory)
62
/CAS1
OUT
DRAM
CAS signal of DRAM (page memory)
63
/OE
OUT
DRAM
Read enable signal of DRAM (page memory)
64
/WE
OUT
DRAM
Write enable signal of DRAM (page memory)
65
OUTD0
OUT
Additional board
(Not used)
66
OUTD1
OUT
Additional board
(Not used)
67
OUTD2
OUT
Additional board
(Not used)
68
OUTD3
OUT
Additional board
(Not used)
69
3.3V
Power
70
OUTD4
OUT
Additional board
(Not used)
71
OUTD5
OUT
Additional board
(Not used)
72
GND
Power
73
OUTD6
OUT
Additional board
(Not used)
74
OUTD7
OUT
Additional board
(Not used)
75
OUTD8
OUT
Additional board
(Not used)
76
OUTD9
OUT
Additional board
(Not used)
77
OUTD11
OUT
Additional board
(Not used)
78
OUTD10
OUT
Additional board
(Not used)
79
OUTD12
OUT
Additional board
(Not used)
80
OUTD13
OUT
Additional board
(Not used)
81
OUTD14
OUT
Additional board
(Not used)
82
OUTD15
OUT
Additional board
(Not used)
83
/HSYNC
OUT
FAX board
(Not used)
84
/PCLPRD
IN
PCL board
(Not used)
85
/PCLREQ
OUT
PCL board
(Not used)
86
/PCLACK
IN
PCL board
(Not used)
87
/PCLCS
IN
PCL board
(Not used)
88
3.3V
Power
89
GND
Power
90
5V
Power
91
GND
Power
92
/FAXPRD
IN
FAX board
(Not used)
93
/FAXREQ
OUT
FAX board
(Not used)
94
/FAXACK
IN
FAX board
(Not used)
95
3.3V
Power
96
/FAXCS
IN
FAX board
(Not used)
AL-1000/1010
12-8
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