Sharp AL-1217 (serv.man17) Service Manual ▷ View online
AL-1226 ELECTRICAL SECTION 12 - 4
(3) Image process ASIC (HG73C119HF)
a. General
The ASIC is composed of the three major blocks: the image process
section, the print control section, and the I/F section.
section, the print control section, and the I/F section.
Image process section:
With image data from the CCD PWB in the operation mode deter-
mined by the register setup, shading, AE process, input
mined by the register setup, shading, AE process, input
γ
correc-
tion, area separation, filter process, resolution conversion, zoom
process, output
process, output
γ
correction, binary conversion (error diffusion,
dither method, simple binary conversion) are performed.
Print control section:
When copying, the image-processed data are outputted to the LSU
according to the LSU writing timing. When scanning, the image
data are made into 8bit width and outputted to the I/F section
(USB).
according to the LSU writing timing. When scanning, the image
data are made into 8bit width and outputted to the I/F section
(USB).
I/F section:
Controls the DRAM which is the image data buffer, and processes
data send/receive between the USB I/F and the IEEE1284 I/F.
data send/receive between the USB I/F and the IEEE1284 I/F.
The ASIC is controlled by writing the operation mode and the neces-
sary setup values of the operation mode into the ASIC control register
before starting each operation. (For ASIC Pin configuration, refer to the
table at the end of this document.)
sary setup values of the operation mode into the ASIC control register
before starting each operation. (For ASIC Pin configuration, refer to the
table at the end of this document.)
b. ASIC (Signal table)
110
USBIN
Input
IF PWB detection signal
111
Input
NC
112
Input
NC
113
Avss
DGND
114
GND
DGND
115
/SCANSP
Output
Scan STOP signal
116
/SCANST
Output
Scan START signal
117
/TRANSST
Output
ASIC transfer signal
118
/PRINTST
Output
Print Start signal
119
SPMT3
Output
SPF motor signal
120
SPMT2/MIRCNT
Output/
Input
Input
SPF motor signal/mirror
counter
counter
121
SPMT1
Output
SPF motor signal
122
SPMT0
Output
SPF motor signal
123
GND
DGND
124
GND
DGND
125
Vcc
CPU3.3V
126
PSL
Output
Power save LED control
127
NC
128
/CS2
Output
ASIC chip select
PIN
No.
Signal code
Input/
Output
Operating
Scan start
CCD
PWB
PWB
Shading
CCD drive
AE
Resolution conversion,
Zooming, lmage
process circuit
Zooming, lmage
process circuit
Print data process circuit
DRAM control
PRINT control
DRAM
8MB or 16MB
8MB or 16MB
LSU
HSYNC
VSYNC
To CPU bus
ASIC
Image process section
I/F section
Print control section
ASIC control resistor
PIN
No.
Signal Name
IN/OUT
Connected
to
Description
1
cpu_ad7
IN
CPU
CPU address bus
2
cpu_ad6
IN
CPU
CPU address bus
3
cpu_ad5
IN
CPU
CPU address bus
4
cpu_ad4
IN
CPU
CPU address bus
5
VCC(CORE/DC)
3.3V
3.3V
Power
6
cpu_ad3
IN
CPU
CPU address bus
7
cpu_ad2
IN
CPU
CPU address bus
8
GND(CORE/DC) Power
9
cpu_ad1
IN
CPU
CPU address bus
10
sgs
OUT
Tr array IC SPF/RSPF gate
solenoid control signal
"H":ON
"H":ON
11
srrc
OUT
Tr array IC SPF/RSPF resist roller
clutch control signal
"H":ON
"H":ON
12
spus
OUT
Tr array IC SPF/RSPF document
feed solenoid control
signal "H":ON
signal "H":ON
13
spfs
OUT
Tr array IC SPF/RSPF document
transport solenoid
control signal "H":ON
control signal "H":ON
14
mrps1
OUT
Tr array IC SPF/RSPF motor
current control signal
15
mrps2
OUT
Tr array IC SPF/RSPF motor
current control signal
PIN
No.
Signal Name
IN/OUT
Connected
to
Description
AL-1226 ELECTRICAL SECTION 12 - 5
16
ope_latch
OUT
Tr array IC Operation circuit latch
signal. Data take-in at
"L"
"L"
17
op_data
OUT
Tr array IC Operation circuit data
signal
18
VCC(AC) 3.3V
Power
19
op_clk
OUT
Tr array IC Operation circuit clock
signal
20
vfmcnt
OUT
Tr array IC Ventilation fan rotation
speed control signal.
"H": High speed, "L":
Low speed
"H": High speed, "L":
Low speed
21
GND(AC)
Power
22
vfm
OUT
Tr array IC Ventilation fan control
signal. "H": Fan ON
23
tc
OUT
Tr array IC Transfer charger
control signal. "H":ON
24
gridl
OUT
Tr array IC Main charger grid
control signal. "H": L
output
output
25
mc
OUT
Tr array IC Main charger control
signal. "H": ON
26
mrps3
OUT
Tr array IC SPF/RSPF motor
current control signal
27
mm_y3
OUT
Tr array IC Carriage motor current
control signal
28
bias
OUT
Tr array IC DV bias control signal.
"H":ON
29
lden
OUT
Tr array IC Laser circuit control
signal. "H": Laser
circuit ON
circuit ON
30
pmd
OUT
Tr array IC Polygon motor control
signal. "H": Polygon
motor ON
motor ON
31
GND(CORE/DC) Power
32
mmd
OUT
Tr array IC Main motor control
signal. "H": Main motor
ON
ON
33
GND(CORE/DC) Power
34
VCC(CORE/DC)
3.3V
3.3V
Power
35
mpfs
OUT
Tr array IC Manual feed solenoid
control signal. "H": ON
36
cpfs2
OUT
Tr array IC Second cassette
paper feed solenoid
control signal. "H":ON
control signal. "H":ON
37
cpfs1
OUT
Tr array IC Cassette paper feed
solenoid control
signal. "H":ON
signal. "H":ON
38
poffr
(Not used)
39
rrs
OUT
Tr array IC Resist roller solenoid
control signal. "H":ON
40
pr
OUT
Tr array IC Power relay control
signal. "H":ON
41
hl
OUT
Tr array IC Heater lamp control
signal. "H":ON
42
TMON
OUT
Tr array IC (Not used)
43
TM_
OUT
Buffer IC
Toner motor control
signal
signal
44
VCC(AC) 3.3V
Power
45
TM
OUT
Buffer IC
Toner motor control
signal
signal
46
miron
OUT
Buffer IC
SPF scanner select
signal
signal
47
GND(AC)
Power
48
spfon
OUT
Buffer IC
SPF ON signal
PIN
No.
Signal Name
IN/OUT
Connected
to
Description
49
mircnt
OUT
Buffer IC
SPF scanner select
signal
signal
50
GND(AC)
Power
51
pcl_s_print
(Not used)
52
fax_s_print
(Not used)
53
es_s_print
(Not used)
54
prareaen
(Not used)
55
d_s_ATDI_B
(Not used)
56
GND(CORE/DC) Power
57
VCC(CORE/
GND) 3.3V
GND) 3.3V
58
pfclko
(Not used)
59
RESET
IN
ASIC reset signal
60
GND(CORE/DC) Power
61
ATRST
IN
(Not used)
62
ATCK
(Not used)
63
ATMS
(Not used)
64
VCC(AC) 3.3V
Power
65
ie1284_stb
IN
I/F board
connector
connector
/STB signal
(IEEE1284
communication port)
(IEEE1284
communication port)
66
ie1284_autofd
IN
I/F board
connector
connector
/AUTOFD signal
(IEEE1284
communication port)
(IEEE1284
communication port)
67
ie1284_slctin
IN
I/F board
connector
connector
/SLCTIN signal
(IEEE1284
communication port)
(IEEE1284
communication port)
68
ie1284_init
IN
I/F board
connector
connector
/INIT signal
(IEEE1284
communication port)
(IEEE1284
communication port)
69
VCC(CORE/DC)
3.3V
3.3V
Power
70
ie1284_slct
OUT
I/F board
connector
connector
SLCT signal
(IEEE1284
communication port)
(IEEE1284
communication port)
71
ie1284_pe
OUT
I/F board
connector
connector
PE signal (IEEE1284
communication port)
communication port)
72
GND(CORE/DC) Power
73
ie1284_busy
OUT
I/F board
connector
connector
BUSY signal
(IEEE1284
communication port)
(IEEE1284
communication port)
74
ie1284_ack
OUT
I/F board
connector
connector
/ACK signal
(IEEE1284
communication port)
(IEEE1284
communication port)
75
ie1284_fault
OUT
I/F board
connector
connector
/FAULT signal
(IEEE1284
communication port)
(IEEE1284
communication port)
76
ie1284_rev
OUT
I/F board
connector
connector
/REV signal
(IEEE1284
communication port)
(IEEE1284
communication port)
77
ie1284_parad7
IN/OUT I/F board
connector
DATA bus (IEEE1284
communication port)
communication port)
78
ie1284_parad6
IN/OUT I/F board
connector
DATA bus (IEEE1284
communication port)
communication port)
79
ie1284_parad5
IN/OUT I/F board
connector
DATA bus (IEEE1284
communication port)
communication port)
80
ie1284_parad4
IN/OUT I/F board
connector
DATA bus (IEEE1284
communication port)
communication port)
81
ie1284_parad3
IN/OUT I/F board
connector
DATA bus (IEEE1284
communication port)
communication port)
82
VCC(AC) 3.3V
83
ie1284_parad2
IN/OUT I/F board
connector
DATA bus (IEEE1284
communication port)
communication port)
84
ie1284_parad1
IN/OUT I/F board
connector
DATA bus (IEEE1284
communication port)
communication port)
85
GND(AC)
Power
PIN
No.
Signal Name
IN/OUT
Connected
to
Description
AL-1226 ELECTRICAL SECTION 12 - 6
86
ie1284_parad0
IN/OUT I/F board
connector
DATA bus (IEEE1284
communication port)
communication port)
87
suspend
OUT
I/F board
connector
connector
SUSPEND signal
(USB communication
port)
(USB communication
port)
88
vmin
IN
I/F board
connector
connector
VMIN signal (USB
communication port)
communication port)
89
vpin
IN
I/F board
connector
connector
VPIN signal (USB
communication port)
communication port)
90
rcv
IN
I/F board
connector
connector
RCV signal (USB
communication port)
communication port)
91
oen
OUT
I/F board
connector
connector
OEN signal (USB
communication port)
communication port)
92
vmout
OUT
I/F board
connector
connector
VMOUT signal (USB
communication port)
communication port)
93
vpout
OUT
I/F board
connector
connector
VPOUT signal (USB
communication port)
communication port)
94
tm2_15m
(Not used)
95
VCC(PLL) 3.3V
Power
96
GND(PLL)
Power
97
VCC(PLL) 3.3V
Power
98
GND(PLL)
Power
99
pfclk
IN
Clock
100 VCC(CORE/DC)
3.3V
Power
101 GND(CORE/DC) Power
102 ram_data0
IN/OUT SDRAM
SDRAM (Image
process page
memory) data bus
process page
memory) data bus
103 ram_data1
IN/OUT SDRAM
SDRAM (Image
process page
memory) data bus
process page
memory) data bus
104 ram_data2
IN/OUT SDRAM
SDRAM (Image
process page
memory) data bus
process page
memory) data bus
105 GND(AC)
Power
106 ram_data3
IN/OUT SDRAM
SDRAM (Image
process page
memory) data bus
process page
memory) data bus
107 ram_data4
IN/OUT SDRAM
SDRAM (Image
process page
memory) data bus
process page
memory) data bus
108 VCC(AC) 3.3V
Power
109 ram_data5
IN/OUT SDRAM
SDRAM (Image
process page
memory) data bus
process page
memory) data bus
110 ram_data6
IN/OUT SDRAM
SDRAM (Image
process page
memory) data bus
process page
memory) data bus
111 GND(CORE/DC) Power
112 ram_data7
112 ram_data7
IN/OUT SDRAM
SDRAM (Image
process page
memory) data bus
process page
memory) data bus
113 ram_data15
IN/OUT SDRAM
SDRAM (Image
process page
memory) data bus
process page
memory) data bus
114 ram_data14
IN/OUT SDRAM
SDRAM (Image
process page
memory) data bus
process page
memory) data bus
115 VCC(CORE/DC)
3.3V
Power
116 ram_data13
IN/OUT SDRAM
SDRAM (Image
process page
memory) data bus
process page
memory) data bus
117 ram_data12
IN/OUT SDRAM
SDRAM (Image
process page
memory) data bus
process page
memory) data bus
PIN
No.
Signal Name
IN/OUT
Connected
to
Description
118 GND(CORE/DC) Power
119 ram_data11
119 ram_data11
IN/OUT SDRAM
SDRAM (Image
process page
memory) data bus
process page
memory) data bus
120 ram_data10
IN/OUT SDRAM
SDRAM (Image
process page
memory) data bus
process page
memory) data bus
121 VCC(CORE/DC)
3.3V
122 ram_data9
IN/OUT SDRAM
SDRAM (Image
process page
memory) data bus
process page
memory) data bus
123 ram_data8
IN/OUT SDRAM
SDRAM (Image
process page
memory) data bus
process page
memory) data bus
124 GND(AC)
Power
125 ram_clk
OUT
SDRAM
SDRAM (Image
process page
memory) CLK signal
process page
memory) CLK signal
126 ram_cke
OUT
SDRAM
SDRAM (Image
process page
memory) CKE signal
process page
memory) CKE signal
127 xram_wde
OUT
SDRAM
SDRAM (Image
process page
memory) WDE signal
process page
memory) WDE signal
128 VCC(AC) 3.3V
Power
129 GND(CORE/DC) Power
130 xram_cas
OUT
SDRAM
SDRAM (Image
process page
memory) CAS signal
process page
memory) CAS signal
131 xram_ras
OUT
SDRAM
SDRAM (Image
process page
memory) RAS signal
process page
memory) RAS signal
132 xram_cs
OUT
SDRAM (Image
process page
memory) CS signal
process page
memory) CS signal
133 VCC(CORE/DC)
3.3V
Power
134 ram_banks0
OUT
SDRAM
SDRAM (Image
process page
memory) BANK signal
process page
memory) BANK signal
135 ram_banks1
OUT
SDRAM
SDRAM (Image
process page
memory) BANK signal
process page
memory) BANK signal
136 GND(CORE/DC) Power
137 ram_dqm0
137 ram_dqm0
OUT
SDRAM
SDRAM (Image
process page
memory) DQM signal
process page
memory) DQM signal
138 ram_dqm1
OUT
SDRAM
SDRAM (Image
process page
memory) DQM signal
process page
memory) DQM signal
139 ram_mad12
OUT
SDRAM
SDRAM (Image
process page
memory) address bus
process page
memory) address bus
140 VCC(CORE/DC)
3.3V
Power
141 ram_mad11
OUT
SDRAM
SDRAM (Image
process page
memory) address bus
process page
memory) address bus
142 ram_mad9
OUT
SDRAM
SDRAM (Image
process page
memory) address bus
process page
memory) address bus
143 GND(AC)
144 ram_mad8
OUT
SDRAM
SDRAM (Image
process page
memory) address bus
process page
memory) address bus
PIN
No.
Signal Name
IN/OUT
Connected
to
Description
AL-1226 ELECTRICAL SECTION 12 - 7
145 ram_mad7
OUT
SDRAM
SDRAM (Image
process page
memory) address bus
process page
memory) address bus
146 VCC(AC)
147 ram_mad6
OUT
SDRAM
SDRAM (Image
process page
memory) address bus
process page
memory) address bus
148 ram_mad5
OUT
SDRAM
SDRAM (Image
process page
memory) address bus
process page
memory) address bus
149 GND(CORE/DC)
150 ram_mad4
OUT
SDRAM
SDRAM (Image
process page
memory) address bus
process page
memory) address bus
151 ram_mad10
OUT
SDRAM
SDRAM (Image
process page
memory) address bus
process page
memory) address bus
152 ram_mad0
OUT
SDRAM
SDRAM (Image
process page
memory) address bus
process page
memory) address bus
153 VCC(CORE/DC)
154 ram_mad1
OUT
SDRAM
SDRAM (Image
process page
memory) address bus
process page
memory) address bus
155 ram_mad2
OUT
SDRAM
SDRAM (Image
process page
memory) address bus
process page
memory) address bus
156 ram_mad3
OUT
SDRAM
SDRAM (Image
process page
memory) address bus
process page
memory) address bus
157 d_s_ATDO_B
(Not used)
158 cl
OUT
Logic IC
Copy lamp control
signal
signal
159 VCC(CORE/DC)
3.3V
Power
160 afp_oeb
(Not used)
161 ccd_tg
OUT
CCD PWB
CCD control signal
162 GND(CORE/DC) Power
163 afp_vsmp
OUT
CCD PWB
AFE control signal
164 ccdrs
OUT
CCD PWB
CCD control signal
165 ccdcp
OUT
CCD PWB
CCD control signal
166 VCC(AC) 3.3V
Power
167 afp_bsmp
OUT
CCD PWB
AFE control signal
168 ccd_ph2
OUT
CCD PWB
CCD control signal
169 afp_afesdi
OUT
CCD PWB
AFE control signal
170 GND(AC)
Power
171 ccd_ph1
OUT
CCD PWB
CCD control signal
172 VCC(CORE/DC)
173 afp_adcclk
173 afp_adcclk
OUT
CCD PWB
AFE control signal
174 afp_afesen
OUT
CCD PWB
AFE control signal
175 GND(CORE/DC) Power
176 afp_afesck
176 afp_afesck
OUT
CCD PWB
AFE control signal
177 mtr_at_home
IN
CCD PWB
Carriage home
position signal
position signal
178 VCC(CORE/DC)
Power
179 afp_data7
IN
CCD PWB
Image scan data
180 afp_data6
IN
CCD PWB
Image scan data
181 afp_data5
IN
CCD PWB
Image scan data
182 GND(CORE/DC) Power
183 afp_data4
183 afp_data4
IN
CCD PWB
Image scan data
184 afp_data3
IN
CCD PWB
Image scan data
185 VCC(AC) 3.3V
Power
186 afp_data2
IN
CCD PWB
Image scan data
187 afp_data1
IN
CCD PWB
Image scan data
188 GND(AC)
Power
PIN
No.
Signal Name
IN/OUT
Connected
to
Description
189 afp_data0
IN
CCD PWB
Image scan data
190 GND(CORE/DC) Power
191 sfclk
IN
Clock
192 tm2_24m
(Not used)
193 GND(PLL)
Power
194 VCC(PLL) 3.3V
Power
195 GND(PLL)
Power
196 VCC(PLL) 3.3V
Power
197 VCC(CORE/DC)
3.3V
Power
198 mtr_y1
OUT
Tr array IC Carriage motor current
control signal
199 mtr_phase1
OUT
Motor
driver
driver
Carriage motor control
signal
signal
200 GND(CORE/DC) Power
201 mtr_i01
OUT
Motor
driver
driver
Carriage motor control
signal
signal
202 mtr_i11
OUT
Motor
driver
driver
Carriage motor control
signal
signal
203 mtr_i21
OUT
Motor
driver
driver
Carriage motor control
signal
signal
204 mtr_phase2
OUT
Motor
driver
driver
Carriage motor control
signal
signal
205 VCC(CORE/DC)
3.3V
Power
206 mtr_i02
OUT
Motor
driver
driver
Carriage motor control
signal
signal
207 mtr_i12
OUT
Motor
driver
driver
Carriage motor control
signal
signal
208 mtr_i22
OUT
Motor
driver
driver
Carriage motor control
signal
signal
209 mtr_y2
OUT
Tr array IC Carriage motor current
control signal
210 VCC(AC) 3.3V
Power
211 xsync
IN
LSU
Horizontal sync signal
from LSU (/SYNC)
from LSU (/SYNC)
212 xld
OUT
LSU
Laser drive signal
(/VIDEO)
(/VIDEO)
213 GND(AC)
Power
214 xlend
OUT
LSU
Laser APC signal
(/LEND)
(/LEND)
215 xcpuwr
IN
CPU
CPU write signal
216 xcpurd
IN
CPU
CPU read signal
217 scanstop
IN
CPU
Scan stop signal
218 scanst
IN
CPU
Scan start signal
219 transst
IN
CPU
Data transfer start
signal
signal
220 printst
IN
CPU
Print start signal
221 tmen
IN
CPU
Toner motor clock
enable signal
enable signal
222 testpin4
(Not used)
223 VCC(CORE/DC)
3.3V
Power
224 testpin3
(Not used)
225 tmclk
IN
Toner motor clock
signal
signal
226 GND(CORE/DC) Power
227 testpin2
(Not used)
228 testpin1
(Not used)
229 testpin0
(Not used)
230 cpudata15
IN/OUT CPU
CPU data bus
231 cpudata14
IN/OUT CPU
CPU data bus
232 cpudata13
IN/OUT CPU
CPU data bus
233 cpudata12
IN/OUT CPU
CPU data bus
234 cpudata11
IN/OUT CPU
CPU data bus
PIN
No.
Signal Name
IN/OUT
Connected
to
Description
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