Sharp AL-1020, AL-1200, AL-1220, AL-1250 Service Manual
AL-1250
SERVICE MANUAL
CODE: 00ZAL1250/A1E
DIGITAL COPIER
AL-1020
AL-1200
AL-1220
MODEL AL-1250
* This Service Manual describes only the differences from
the AL-1000/1010. For the common items with the
AL-1000/1010,please refer to the AL-1000/1010 manual.
CONTENTS
[ 1 ] GENERAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 1
[ 2 ] SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 1
[ 3 ] EXTERNAL VI EWS AND INTERNAL STRUCTURE. . . . . . . . . . . . 3 - 1
[ 4 ] UNPACKING AND INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . 4 - 1
[ 5 ] OPERATIONAL DESCRIPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 1
[ 6 ] DISASSEMBLY AND ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 2
[ 7 ] SIMULATION,TROUBLE CODES . . . . . . . . . . . . . . . . . . . . . . . . . . 7 - 1
[ 8 ] USER PROGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 - 1
[ 9 ] ELECTRICAL SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 1
[10] CIRCUIT DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 - 1
Parts marked with " " is important for maintaining the safety of the set. Be sure to replace these parts with specified
ones for maintaining the safty and performance of the set.
SHARP CORPORATION
This document has been published to be used for
after sales service only.
The contents are subject to change without notice.
AL-1250
[1] GENERAL
1. General
This model is a digital personal copier produced with key words
of “Comfort able copy, Clear copy, Easy copy” providing high
copy performances and copy productivity.
2. Target User Copy Volume: Monthly Average
Copies: 400 ∼ 800 (Max. 800)
Prints: 400 ∼ 800 (Max. 800)
3. Main features
A. High-speed laser copying
● Since warm-up time is zero, copying can be started immediately after the power switch is turned on.
● First-copy time is only 9.6 seconds (normal mode).
● Copying speed is 10 copies/min. (AL-1020) or 12
copies/min. (AL-1220/AL-1250), which adapts to business
use, allowing improvement of working efficiency.
B. High-quality digital image
● High-quality image copying at 600 dpi can be performed.
● In addition to the automatic exposure mode, the manual ex-
posure can be adjusted in five steps.
● The photo mode copying function allows clear copying of
delicate halftone original images such as monochrome
photos and color photos.
C. Substantial copying functions
● Zoom copying from 50% to 200% in 1% increments can be
performed.
● Continuous copying of maximum 99 sheets can also be performed.
● Automatic document feeding through the single pass feeder
(SPF) can be performed.
● Toner save mode reduces toner consumption by approximately 10%.
● User programs allow setting/modification of functions for
customer’s needs.
D. Scan once/Print many
This copier is equipped with a 1-page memory buffer. This
Memory allows the copier to scan an original 1 time only and
make up to 99 copies. This feature allows for improved
workflow, reduced operating noise from the copier and reduced
wear and tear on the scanning mechanism. This feature
provides for a higher reliability.
4. Environmental
The environmental conditions for assuring the copy quality and
the machine operations are as follows:
A. Normal operating condition
Temperature:20˚C~25
Humidity:65 ± 5%RH
B. Acceptable operating condition
Humidity (RH)
85%
60%
20%
10˚C 30˚C 35˚C
C. Optical condition
Humidity (RH)
90%
60%
15%
–25˚C 30˚C 40˚C
D. Supply storage condition
Humidity (RH)
90%
E. Printer feature
The AL-1250 copier can be used as a laser printer. The AL1020 and AL-1220 copiers can be used as a laser printer by installing an optional printer upgrade kit.
F. Environmentally friendly design
Paper output tray is housed in the copier for space saving.
Preheat mode and auto power shut-off mode are provided to
reduce power consumption in standby mode.
20%
–5˚C 45˚C
1-1
AL-1250
[2] SPECIFICATIONS
1. Basic specification
Item AL-1020 AL-1220 AL-1250 AL-1200
External dimensions (W × D × H) (mm)
Weight 21.5 kg 21.5 kg 24.5 kg 18.0 kg
H379 × W518 ×
D477 mm
←
2. Operation Specification
Section item Details AL-1020 AL-1220 AL-1250 AL-1200
1 tray (250
Paper feed
section
Electrical
section
Installed memory 6 MB ←←Not Available
*
1) May fluctuate due to environmental conditions and the input voltage.
Paper feed
system
Power source
Power
consumption
sheet) + Multi
bypass (50
sheet)
100V 110V
Voltage
Frequency
Max 1000 W ←←←
Average
(during copying)
Average (stand-
by)
Pre-heat mode 40 Wh/H *1) ←←←
Auto power
shut-off mode
120/127V 230V
240V
Common use
for 50 and 60
Hz
275 Wh/H *1) 285 Wh/H *1) 285 Wh/H *1) 270 Wh/H
70 Wh/H *1) ←←←
18 Wh/H *1) ←←←
←
←←←
←←←
H464 × W518 ×
D477 mm
2 tray (250
sheet × 2) +
Multi bypass
(50 sheet)
H293 × W518 ×
D445 mm
1 tray (250
sheet) + Multi
bypass (50
sheet)
2-1
3. Copy performance
Section item Item AL-1020 AL-1220 AL-1250 AL-1200
Copy speed First copy time
AB system:
A4
(Landscape)
B5
(Landscape)
Inch system 81/2" × 14"
(Landscape)
8 1/2" × 11"
(Landscape)
Void
Copy speed
(CPM)
Copy speed
(CPM)
Copy speed
(CPM)
Copy speed
(CPM)
Void area
Image loss
AL-1250
9.6 sec. (Preheat mode: 16
sec. or
delow/Auto
power-shut-off
Tray paper feed
Manual paper
feed
SPF
Same size 10 12 ←←
Enlargement 10 12 ←←
Reduction 10 11 ←←
Same size 10 12 ←←
Enlargement 10 12 ←←
Reduction 10 12 ←←
Same size 10 10 ←←
Enlargement 10 10 ←←
Reduction 10 10 ←←
Same size 10 12 ←←
Enlargement 10 12 ←←
Reduction 10 12 ←←
leading edge 1 ~ 255 4 mm ←←←
Tailing edge 4 mm or less ←←←
Side void area
leading edge
Trailing edge
Side void area
(per side)
mode: 23 sec.
or delow Feed
from
Tray1/Scan
Once Print
Many Mode:
13.9 sec
Single: 10
sec./Multi: 8.0
(Pre-heat
mode: 16 sec.)
Optic at
Scanning
Position: 11.5
sec Optic at
Home Position:
13.0 sec
4 mm or less
(per side)
Same size: 3.0
mm or less
Enlarge (200):
1.5 mm or less
Reduction (50):
6.0 mm or less
Same size: 4.0
mm or less
Enlarge (200):
4.0 mm or less
Reduction (50):
4.0 mm or less
Same size: 2.0
mm or less
Enlarge (200):
2.0 mm or less
Reduction (50):
2.0 mm or less
←←←
←←←
—
←←
Not Available
←←←
←←←
←←←
←←←
←←←
←←←
←←←
←←←
←←←
←←←
2-2
AL-1250
4. GDI Printer Specification (Standard for AL-1250, Option for AL-1020/1220)
Printer speed WPPM (TBD) (A4/8-1/2 × 11, Sharp original)
First Print time
CPU None
Memory 4 MB • 6 MB
Interface IEEE1284
Emulation Sleek type GDI
Interface Font None
Resolution 600 dpi
Operation System Compatibility Win 3.1, WFW 3.11, Win 95, Win 98, Win NT 4.0
Minimum System Requirements
9.6 sec (A4/8-1/2 × 11, Not include communication time to the host PC and the set up
time of polygon mirror)
Win 3.1: 486 or better processor, 8 MB Ram (16 recommended)
30 MB of additional HD Space (+5 MB for Win 32s installation)
Win 95: 486 or better processor, 8 MB Ram (16 recommended)
30 MB of additional HD Space.
Win 98: 486 DX or better processor, 16 MB Ram (32 recommended)
30 MB of additional HD Space.
NT 4.0: 486 or better processor, 8 MB Ram (16 recommended)
30 MB of additional HD Space.
5. Other
AL-1020 10cpm/MB/SOPM/SPF
AL-1220 12cpm/MB/SOPM/SPF
AL-1250 12cpm/MB/SOPM/SPF/GDI/2nd
*) The above models allow to use the SOPM function from the SPF.
A. SOPM function
(1) The SOPM function is effective either in the OC copy mode or in the SPF copy mode.
(2) The SOPM in the SPF copy mode: Even when a document is set on the document table and the SPF mode lamp is lighted, the
quantity display remains unchanged (does not turn to “1”). Under that condition, press the quantity set key to set the quantity.
(3) Basic operation: The first document is read and data are stored in the memory and copies of the set quantity are made.
If there is the second document, it is read and the data are stored in the memory and copies of the set quantity are made similarly.
This procedure is repeated until the end of the documents.
B. 2nd cassette door
(1) The sensor output when the 2nd cassette door is open is the same as that when PPD3 is ON. Therefore, when the initial operation
is made (the power is turned on and the side door is opened/closed) with the 2nd door open, the JAM lamp will light up.
6. AL-1200 specifications
The AL-1200 is the 12 sheets/min model of the AL-1010.
The Specifications are the same as those of the AL-1010, except for the copy speed and the average power consumption during copying (270Wh/H (*1)).
Please refer to the Service Manual of the AL-1010.
(*1) Depends on the operating conditions and the input voltage.
2-3
[3] EXTERNAL VIEWS AND INTERNAL STRUCTURES
AL-1250
1. Appearance
(2)
(1)
(13)
(12)
(3)
(7)
(8)
(9)
(10)
(11)
(4)
(20)
(6)
(5)
(14)
(19)
(18)
(1) Operation panel (2) Original table (3) SPF exit area
(4) Original guides (5) Document feeder tray (6) Feeding roller cover
(7) Original cover (8) Side cover (9) Bypass tray
(10) Bypass tray guides (11) Side cover open button (12) Front cover
(13) Paper tray
∗1
(14) Handle (15) Cover for optional printer interface
(16) Paper output tray (17) Paper output tray extension (18) Power switch
(19) Power cord socket (20) Parallel interface connector
∗3
(15)
(16)
(17)
(14)
∗2
∗1 The AL-1250 is equipped with two paper trays.
∗2 (AL-1020/AL-1220 only) (For the AL-1020/AL-1220, a printer upgrade kit is optional.)
∗3 AL-1250 only
2. Internal
(1)
(5)
(2)
(6)
(7)
(3)
(4)
(8)
(1) TC cartridge lock release button (2) TD cartridge (3) Drum cartridge
(4) Drum cartridge handle (5) Paper feed roller (6) Fusing unit release lever
(7) Charger cleaner (8) Transfer charger
3-1
AL-1250
3. Operational panel
(1) (2) (4) (11)(10)(3) (5) (6) (7)
200%
MAX.
1
x
51/
2
100%
x
81/214
x
81/
2
MIN.
x
/
81/211
8
2
x
81/211
x
11
51/281/
2
129%
100%
78%
64%
50%
ZOOM
(9)(8)
(13) (14) (15) (16) (17)(12)
Exposure mode selector key and
(1)
indicators
(4) SPF indicator (5) SPF misfeed indicator (6)
Light and dark keys and exposure
(2)
indicators
(3) Alarm indicators
∗1
Copy ratio selector key and copy
ratio indicators
(7) Zoom indicator (8) Copy ratio display (%) key (9) Display
(10) ON LINE indicator (11) Power save indicator (12) Tray select key
(13) Paper feed location indicators (14) Zoom keys (15) Copy quantity keys
(16) Clear key (17) Print key and ready indicator
∗1
Drum replacement required indicator
When the drum counter reaches 17,000 copies, the indicator lights up. After 1,000 additional copies are made, the indicator starts
blinking and machine will not-operate (after current job) until a new cartridge is installed.
Misfeed indicator
TD cartridge replacement required indicator
When toner density is lower than a specified level, the TONER DEVELOPER CARTRIDGE REPLACEMENT indicator lights up
to warn the user.
If toner is not added after approximately 10 sheets are copied, the indicator starts blinking and machine starts to supply
toner.(Toner Developer cartridg replacement indicator keeps lighting up)
If toner density is not back to specific level after two minutes, the READ indicator goes out and Toner Developer indicator starts
blinking, and the copier stops.
∗2 ON: Indicates that the machine is in the energy saving (pre-heat) mode.
Blink: Indicates that the machine is in the process of resetting from the energy saving mode or just after supplying the power.
OFF: Indicates that resetting from the energy saving mode is completed and that the fusing temperature is in ready state.
The combinations of the above display lamps are as follows: (● = ON, ✕ = OFF)
Lamp Immediately after power ON Ready Copying
Pre-heat lamp Blink ✕✕
Ready lamp ●●✕
Other lamps ●●●
Copy is started during
resetting from energy
saving mode
Lamp
Energy saving mode (Pre-
heating)
Energy saving mode
(Auto power shut off)
Resetting from energy
saving mode
Pre-heat lamp ●●Blink Blink
Ready lamp ●✕●✕
Other lamps ●✕●●
3-2
4. Motors and solenoids
AL-1250
(3)
(2)
(8)
(4)
(1)
(5)
(7)
(6)
No. Part name Control signal Function,operation
(1) Main motor MM Drives the copier.
(2) Mirror motor MRMT Drives the optical mirror base (scanner unit).
(3) Toner motor TM Supplies toner.
(4) Cooling fan motor VFM Cools the optical section.
(5) Resist roller solenoid RRS Resist roller rotation control solenoid
(6) Paper feed solenoid CPFS1 Cassette Paper feed solenoid
(7) Multi paper feed solenoid MPFS Multi manual pages feed solenoid
(8) SPF motor SPFM Drives the single pass feeder
3-3
AL-1250
5. Sensors and switches
(1)
(12)
(2)
(10)
(11)
(3)
(4)
(13)
(5)
(9)
(7)
(6)
(14)
(8)
No. Name Signal Type Function Output
Mirror home position
(1)
sensor
(2) POD sensor POD Transmission sensor Paper exit detection “H” at paper pass
(3) PPD2 sensor PPD2 Transmission sensor
(4) Cassette detection switch CED1 Microswitch
Manual feed detection
(5)
switch
(6) PPD1 sensor PPD1 Transmission sensor
(7) Door switch DSW Micro switch
(8) Door switch DSW Micro switch
(9) Drum reset switch DRST Micro switch
(10) SPF sensor
(11) SPPD sensor SPPD Transmission sensor Paper transport detection “L” at paper pass
(12) SDOD sensor SDOD Transmission sensor
(13) 2nd cassette DSW Micro switch
(14) PPD3 sensor PPD3 Transmission sensor
MHPS Transmission sensor
MFD Transmission sensor
SPID/SD
SW
Transmission sensor
Mirror (scanner unit)
home position detection
Paper transport detection
2
Cassette installation
detection
Manual feed paper
detection (single only)
Paper transport detection
1
Door open/close
detection (safety switch
for 5V)
Door open/close
detection (safety switch
for 24V)
New drum detection
switch
Paper entry detection
Cover open/close
detection
SPF open/close detection
Book sensor
2nd cassette door open
detection
Paper transport
detection 3
“H” at home position
“L” at paper pass
“H” at cassette insertion
“L” at paper detection
“L” at paper pass
1 or 0V of 5V at door
open
1 or 0V of 24V at door
open
Instantaneously “H” at
insertion of new drum
“L” at paper pass
“L” at paper pass
1 or 0V of 5V at door
open
“L” at paper pass
3-4
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