Sharp AR-5012 User manual

CONTENTS
Parts marked with “ ” are important for maintaining the safety of the machine. Be sure to replace these parts
with the replacement parts specified to maintain the safety and performance of the machine.
SHARP CORPORATION This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
SERVICE MANUAL
CODE : 00ZAR5012/A1E
DIGITAL LASER COPIER/
PRINTER
MODEL AR-5012
AR-5012
[ 1 ] GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 1
[ 2 ] SPECIFICATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 1
[ 3 ] CONSUMABLE PARTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 1
[ 4 ] EXTERNAL VIEWS AND INTERNAL STRUCTURES . . . . . . . . . 4 - 1
[ 5 ] UNPACKING AND INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . 5 - 1
[ 6 ] COPY PROCESS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 - 1
[ 7 ] OPERATIONAL DESCRIPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . 7 - 1
[ 8 ] DISASSEMBLY AND ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . 8 - 1
[ 9 ] ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 1
[10] SIMULATION, TROUBLE CODES . . . . . . . . . . . . . . . . . . . . . . . 10 - 1
[11] MAINTENANCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 - 1
[12] USER PROGRAMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 - 1
[13] ELECTRICAL SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 - 1
[14] CIRCUIT DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 - 1

CAUTION
This laser radiation is not a danger to the skin, but when an exact focusing of the laser beam is achieved
on the eye’s retina, there is the danger of spot damage to the retina.
The following cautions must be observed to avoid exposure of the laser beam to your eyes at the time of
servicing.
1) When a problem in the laser optical unit has occurred, the whole optical unit must be exchanged as a
unit, not as individual parts.
2) Do not look into the machine with the main switch turned on after removing the developer unit, toner
cartridge, and drum cartridge.
3) Do not look into the laser beam exposure slit of the laser optical unit with the connector connected
when removing and installing the optical system.
4) The middle frame contains the safety interlock switch.
Do not defeat the safety interlock by inserting wedges or other items into the switch slot.
LASER WAVE – LENGTH : 770 ~ 795nm
Pulse times : 11.82µs/7mm
Out put power : 0.17mW ± 0.01mW
CAUTION
INVISIBLE LASER RADIATION,
WHEN OPEN AND INTERLOCKS DEFEATED.
AVOID EXPOSURE TO BEAM.
VORSICHT
UNSICHTBARE LASERSTRAHLUNG,
WENN ABDECKUNG GEÖFFNET UND
SICHERHEITSVERRIEGELUNG ÜBERBRÜCKT.
NICHT DEM STRAHL AUSSETZEN.
VARO !
AVATTAESSA JA SUOJALUKITUS
OHITETTAESSA OLET ALTTIINA
NÄKYMÄTTÖMÄLLE LASERSÄTEILYLLE ÄLÄ
KATSO SÄTEESEEN.
ADVARSEL
USYNLIG LASERSTRÅLNING VED ÅBNING, NÅR
SIKKERHEDSBRYDERE ER UDE AF
FUNKTION. UNDGÅ UDSAETTELSE FOR
STRÅLNING.
VARNING !
OSYNLIG LASERSTRÅLNING NÄR DENNA DEL
ÄR ÖPPNAD OCH SPÄRREN ÄR URKOPPLAD.
BETRAKTA EJ STRÅLEN. – STRÅLEN ÄR
FARLIG.
This product is a class 1 laser product that complies with 21CFR 1040 of the CDRH standard and
IEC825. This means that this machine does not produce hazardous laser radiation. The use of controls,
adjustments or performance of procedures other than those specified herein may result in hazardous
radiation exposure.

At the production line, the output power
of the scanner unit is adjusted to 0.57
MILLI-WATT PLUS 20 PCTS and is
maintained constant by the operation of
the Automatic Power Control (APC).
Even if the APC circuit fails in operation
for some reason, the maximum output
power will only be 15 MILLI-WATT 0.1
MICRO-SEC. Giving and accessible
emission level of 42 MICRO-WATT
which is still-less than the limit of
CLASS-1 laser product.
The foregoing is applicable only to the 220V
model
,
230V model and 240V model.
VAROITUS! LAITTEEN KÄYTTÄMINEN MUULLA
KUIN TÄSSÄ KÄYTTÖOHJEESSA MAINITULLA
TAVALLA SAATTAA ALTISTAA KÄYTTÄJÄN
TURVALLISUUSLUOKAN 1 YLITTÄVÄLLE
NÄKYMÄTTÖMÄLLE LASERSÄTEILYLLE.
VARNING - OM APPARATEN ANVÄNDS PÅ ANNAT
SÄTT ÄN I DENNA BRUKSANVISNING
SPECIFICERATS, KAN ANVÄNDAREN UTSÄTTAS
FÖR OSYNLIG LASERSTRÅLNING, SOM
ÖVERSKRIDER GRÄNSEN FÖR LASERKLASS 1.
Caution
This product contains a low power laser
device. To ensure continued safety do not
remove any cover or attempt to gain access
to the inside of the product. Refer all
servicing to qualified personnel.
LUOKAN 1 LASERLAITE
KLASS 1 LASER APPARAT
The label ( ) in the fusing area of the unit indicates the following:
: Caution, risk of danger
: Caution, hot surface
Caution label on the unit

CONTENTS
[1] GENERAL
1. Major functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
[2] SPECIFICATIONS
1. Basic Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2. Operation specifications . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
3. Copy performance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
[3] CONSUMABLE PARTS
1. Supply system table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
2. Environmental . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3. Production control number (lot No.) identification . . . . . . . 3-1
4. TD cartridge replacement . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
[4] EXTERNAL VIEWS AND INTERNAL STRUCTURES
1. Appearance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
2. Internal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
3. Operation panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
4. Motors and solenoids . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
5. Sensors and switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
6. PWB unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
7. Cross sectional view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
[5] UNPACKING AND INSTALLATION
1. Copier installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
2. Cautions on handling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
3. Checking packed components and accessories . . . . . . . . 5-1
4. Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
5. Removing protective packing materials. . . . . . . . . . . . . . . 5-2
6. Developer unit installation . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
7. Toner cartridge installation . . . . . . . . . . . . . . . . . . . . . . . . 5-3
8. Loading copy paper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
9. Power to copier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
10. Moving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
[6] COPY PROCESS
1. Functional diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
2. Outline of print process . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
3. Actual print process. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
[7] OPERATIONAL DESCRIPTIONS
1. Outline of operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
2. Scanner section. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
3. Laser unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3
4. Fuser section. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3
5. Paper feed section and paper transport section . . . . . . . . 7-4
[8] DISASSEMBLY AND ASSEMBLY
1. High voltage section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-1
2. Operation panel section . . . . . . . . . . . . . . . . . . . . . . . . . . .8-4
3. Optical section. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-5
4. Fusing section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-7
5. Tray paper feed/transport section . . . . . . . . . . . . . . . . . . . .8-9
6. Manual paper feed section . . . . . . . . . . . . . . . . . . . . . . . .8-14
7. Rear frame section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-16
8. Power section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-17
[9] ADJUSTMENTS
1. Optical section. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-1
2. Copy density adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . .9-4
3. High voltage adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . .9-5
4. Duplex adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-6
[10] SIMULATION, TROUBLE CODES
1. Entering the simulation mode . . . . . . . . . . . . . . . . . . . . . .10-1
2. List of simulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-2
3. Contents of simulations. . . . . . . . . . . . . . . . . . . . . . . . . . .10-3
4. Trouble codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-15
[11] MAINTENANCE
1. Maintenance table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-1
2. Maintenance display system . . . . . . . . . . . . . . . . . . . . . . .11-1
3. Remaining toner indication . . . . . . . . . . . . . . . . . . . . . . . .11-1
4. Additional simulation and trouble code . . . . . . . . . . . . . . .11-2
[12] USER PROGRAMS
1. Functions that can be set with user programs. . . . . . . . . .12-1
2. Change the setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-1
3. Density level adjustment . . . . . . . . . . . . . . . . . . . . . . . . . .12-2
4. Toner save mode setup and cancel . . . . . . . . . . . . . . . . .12-2
[13] ELECTRICAL SECTION
1. Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13-1
2. Circuit descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13-3
[14] CIRCUIT DIAGRAM
1. MCU PWB. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-1
2. OPERATION PWB . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-10
3. POWER SUPPLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-11
4. NOISE FILTER CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . .14-13
5. ACTUAL WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . .14-15

AR-5012 GENERAL 1 - 1
[1] GENERAL
1. Major functions
Configurations
Descriptions of items
CPM: Copy speed (Copies Per Minute)
SB/MB: SB = Manual feed single bypass, MB = Manual feed multi bypass
2 tray: Second cassette unit.
SPF: Original feed unit
R-SPF: Duplex original feed unit
Color scanner: Color scanner function
GDI printer: GDI printer function with USB.
PCL printer: PCL printer function with USB.
SOPM: Scan Once Print Many function (Many copies are made by one scan.)
Duplex: Auto duplex copy function
Memory: Standard page memory
FAX: FAX function.
Descriptions of table
: Standard provision
: No function or no option available
Opt: Option
∗1: AL-12PKM
∗2: AR-PG2
Item
CPM SB/MB 2 Tray SPF R-SPF Color
Scanner
GDI
printer
PCL
printer SOPM Duplex Memory FAX
Model
AR-5012 12CPM SB 8M
AR-5012

AR-5012 SPECIFICATIONS 2 - 1
[2] SPECIFICATIONS
1. Basic Specifications
2. Operation specifications
Item
Type Desktop
Copy system Dry, electrostatic
Segment (class) Digital personal copier
Copier dimensions AR-5012 20.4"(W)X18.2"(D)X11.6"(H) (518mm(W)X462.5mm(D)X295.6mm(H))
Weight
(Approximately)
AR-5012 35.3lbs.(17Kg) TD and drum cartridges included
Section, item Details
Paper feed
section
Paper feed
system
AR-5012 1 tray (250 sheet) + single bypass
AB system Tray paper feed
section
Paper size A4, B5, A5 (Landscape)
Paper weight 56 - 80g/m2(15 - 21 lbs.)
Paper feed capacity 250 sheets
Kinds Standard paper, specified paper, recycled paper
Remark User adjustment of paper guide available
Multi bypass paper
feed section
Paper size A4, B5, A5, B6, A6 (Landscape)
Paper weight 52 - 128g/m2(14 - 34.5 lbs.)
Paper feed capacity 50 sheets
Kinds Standard paper, specified paper, recycled paper, OHP,
Label, Envelop (Single copy)
Remark User adjustment of paper guide available
Single bypass paper
feed section
Paper size A4, B5, A5, B6, A6 (Landscape)
Paper weight 52 - 128g/m2(14 - 34.5 lbs.)
Paper feed capacity 1 sheet
Kinds Standard paper, specified paper, recycled paper, OHP,
Label, Postal card, Envelop, Post card (Including
double postal without fold line)
Remark User adjustment of paper guide available
Inch system Tray paper feed
section
Paper size 8-1/2" x 14", 8-1/2 x 11", 8-1/2" x 5-1/2" (Landscape)
Paper weight 15 - 21 lbs.
Paper feed capacity 250 sheets
Kinds Standard paper, specified paper, recycled paper
Remark User adjustment of paper guide available
Multi bypass paper
feed section
Paper size 8-1/2" x 14", 8-1/2 x 11", 8-1/2" x 5-1/2", 3-1/2" x 5-1/2"
(Landscape)
Paper weight 14 - 34.5 lbs.
Paper feed capacity 50 sheets
Kinds Standard paper, specified paper, recycled paper, OHP,
Label, Envelop (Single copy)
Remark User adjustment of paper guide available
Single bypass paper
feed section
Paper size 8-1/2" x 14", 8-1/2 x 11", 8-1/2" x 5-1/2" (Landscape)
Paper weight 14 - 34.5 lbs.
Paper feed capacity 1 sheet
Kinds Standard paper, specified paper, recycled paper, OHP,
Label, Envelop
Remark User adjustment of paper guide available
Paper exit section Exit way Face down
Capacity of output tray 100 sheets
Originals Original set Center Registration (left edge)
Max. original size A4 (8-1/2" x 14")
Original kinds sheet, book
Original size detection None
Optical section Scanning
section
Scanning system 3 CCDs (RGB) sensor scanning by lighting white lamp
CCD sensor Resolution 600 dpi
Lighting lamp Type CCFL
Voltage 1100Vrms (Min)
Power consumption 9.6W (Max)
Output data R, G, B 1 or 8 bits/pixel / A/D 16bit
Writing
section
Writing system Writing to OPC drum by the semiconductor laser
Laser unit Resolution 600 dpi

AR-5012 SPECIFICATIONS 2 - 2
*1) May fluctuate due to environmental conditions and the input voltage.
Image forming Photoconductor type OPC (30ø)
Life 25k
Charger Charging system Saw -tooth charging with a grid, / (-) scorotron
discharge
Transfer system (+) DC scorotron system
Separation system (-) DC scorotron system
Developing Developing system Dry, 2-component magnetic brush development system
Cleaning Cleaning system Counter blade system (Counter to rotation)
Fusing section Fusing system Heat roller system
Upper heat roller type Teflon roller
Lower heat roller type Silicon rubber roller
Heater lamp type Halogen lamp
Voltage 120V/230V
Power consumption 800W
Electrical section Power source Voltage 100V, 110V, 120/127V, 230V, 240V
Frequency Common use for 50 and 60Hz
Power consumption Max. Less than 1000W
Average
(during copying)
AR-5012 300 Wh/H *1)
Average (stand-by) 80Wh/H *1)
Pre-heat mode 18Wh/H *1)
Auto power shut-off mode 4.5Wh/H *1)
Section, item Details

AR-5012 SPECIFICATIONS 2 - 3
3. Copy performance
Section, item Details AR-5012
Copy magnification Fixed
magnification
ratios
3 Reduction + 2 Enlargement
(AB system : 25, 70, 86, 100, 141, 400%)
(Inch system : 25, 64, 78, 100, 129, 400%)
Zooming
magnification
ratios
25 - 400%
(376 steps in 1% increments)
Manual steps
(manual, photo)
5 steps
Copy speed First copy time Tray paper feed 9.6 sec. (Pre-heat mode:25 sec. / Auto power-shut-off mode : 40 sec.)
A4 or Letter/100%/Auto Exposure
AB system
A4
(Landscape)
Copy speed
(CPM)
Same size 12
Enlargement 12
Reduction 12
AB system
B5
(Landscape)
Copy speed
(CPM)
Same size 12
Enlargement 12
Reduction 12
Inch system
8-1/2" x 14"
(Landscape)
Copy speed
(CPM)
Same size 12
Enlargement 12
Reduction 12
Inch system
8-1/2" x 11"
(Landscape)
Copy speed
(CPM)
Same size 12
Enlargement 12
Reduction 12
Max. continuous copy quantity 99
Void Void area leading edge 1 - 4mm
Trailing edge 4mm or less, 6mm or less (Duplex copying/both image)
Side edge void area 0.5mm or more (per side)
4.5mm or less (total of both sides)
Image loss leading edge same size: 3.0mm or less (OC) / 4mm or less (SPF/R-SPF/Duplex)
Enlarge: 2mm or less (OC) / 3mm or less (SPF/R-SPF/Duplex)
Reduction (50%): 6.0mm or less (OC) / 8mm or less (SPF/R-SPF/
Duplex)
Warm-up time 0 sec.
Power save mode reset time 0 sec.
Paper jam recovery time 0 sec.

AR-5012 CONSUMABLE PARTS 3 - 1
[3] CONSUMABLE PARTS
1. Supply system table
Note: Printing of the master/individual cartons is made in 4 languages, English/French/German/Spanish.
Packed together with the machine: DR 25K/Developer UN/Process UN
2. Environmental
The environmental conditions for assuring the copy quality and the
machine operations are as follows:
(1) Normal operating condition
Temperature: 20°C to 25
Humidity: 65 ±5%RH
(2) Acceptable operating condition
(3) Optical condition
(4) Supply storage condition
3. Production control number (lot No.)
identification
<Toner cartridge>
∗: Destination
<Drum cartridge>
The label on the drum cartridge shows the date of production.
(SOCC production)
<JAPAN production>
No. Name Content Life Product name Package Remark
1 Toner CA(Black) Toner
(Toner: Net Weight 210g)
×10 80K AR-152LT 1 LT=T ∗10
Polyethylene bag ×10
2 Developer Developer
(Developer: Net Weight 170g)
×10 250K AR-152LD 1 LD=DV ∗10
3 Drum kit Drum ×1 25K AR-152DM 10
Drum fixing plate ×1
Humidity (RH)
85%
60%
20%
10˚C 30˚C 35˚C
Humidity (RH)
90%
60%
15%
–25˚C30˚C40˚C
Humidity (RH)
90%
20%
–5˚C45˚C
Division No.
EX Destination A same pack G
B same pack H
Option Destination AP
BQ
Production month
Production day
Destination code
(Dealer, distributor, OEM, etc.)
Production place
(SOCC: Fixed to B.)
End digit of year
Version No.
Production month
Production day
Destination code
(Dealer, distributor, OEM, etc.)
Production place
(SOCC: Fixed to B.)
End digit of year
Version No.
X000119Ver.A 1
Production month
(1 - 9 = Jan. - Sep. 0 = Oct. X = Nov. Y = Dec.)
Serial number of month
Fixed to 1.
Pack division
(See table below)
End digit of year
Version No.

AR-5012 CONSUMABLE PARTS 3 - 2
∗1 The production control label is not attached to the cartridge of a
China product.
<Developer>
4. TD cartridge replacement
1) Open the front and side cabinets of the copier.
2) Keep holding Toner lover, and
3) Carefully pull out Toner unit from the copier.
4) Put Toner unit in a collection bag immediately after removing it
from the copier
Note: Never carry exposed Toner unit. Be sure to put it in the
collection bag.
Division No.
Ex production 1
Option 2
Same pack 3
Production control
label attachment position
Production control
label attachment position(*1)
Sub lot
Production day
Production month
End digit of year
Production place
1
3
2

AR-5012 EXTERNAL VIEWS AND INTERNAL STRUCTURES 4 - 1
[4] EXTERNAL VIEWS AND INTERNAL STRUCTURES
1. Appearance
2. Internal
1 Original cover 2 Original table 3Operation panel
4Front cover 5Paper tray 6Side cover
7Side cover open button 8Bypass paper guides 9 Single bypass
10 Paper output tray 11 Paper output tray extension 12 Power switch
13 Handle 14 Power cord socket ——
9
2
3
4
5
1
6
8
7
10
11
12
13
14
1 Toner cartridge 2 Fusing unit release lever 3Transfer charger
4Charger cleaner 5 Photoconductive drum ——
1
5
2
3
4

AR-5012 EXTERNAL VIEWS AND INTERNAL STRUCTURES 4 - 2
3. Operation panel
7
12111098
(AR-5012)
123 4 5 6
1Exposure mode selector key and indicators
Use to sequentially select the exposure modes: AUTO, MANUAL or
PHOTO. Selected mode is shown by a lit indicator.
2Light and dark keys and exposure indicators
Use to adjust the MANUAL or PHOTO exposure level.
Selected exposure level is shown by a lit indicator.
Use to start and terminate user program setting.
3Alarm indicators
Developer replacement required indicator
Misfeed indicator
Toner cartridge replacement required indicator *1
Maintenance indicator
4Copy ratio selector key and copy ratio indicators
Use to sequentially select preset reduction/enlargement copy ratios.
Selected copy ratio is shown by a lit indicator.
5Copy ratio display (%) key 6Display
Displays the specified copy quantity, zoom copy ratio, user program
code, and error code.
7Power save indicator
Lights up when the copier is in a power save mode.
8Paper feed location indicators
Light up to show the selected paper feed station.
9Zoom keys / indicator
Use to select any reduction or enlargement copy ratio from 25% to
400% in 1% increments.
10 Copy quantity keys
•Use to select the desired copy quantity (1 to 99).
•Use to make user program entries.
11 Clear key
•Press to clear the display, or press during a copy run to terminate
copying.
•Press and hold down during standby to display the total number of
copies made to date.
12 Print key and ready indicator
•Copying is possible when the indicator is on.
•Use to set a user program.
•Press to start copying

AR-5012 EXTERNAL VIEWS AND INTERNAL STRUCTURES 4 - 3
4. Motors and solenoids
3
2
4
1
5
6
No. Part name Control signal Function / Operation
1 Main motor MM Drives the copier.
2 Scanner 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 1

AR-5012 EXTERNAL VIEWS AND INTERNAL STRUCTURES 4 - 4
5. Sensors and switches
12
3
4
5
6
7
No. Name Signal Type Function Output
1 Scanner unit home position
sensor
MHPS Transmission sensor Scanner unit home position detection "H" at home position
2 POD sensor POD Transmission sensor Paper exit detection "H" at paper pass
3 PPD2 sensor PPD2 Transmission sensor Paper transport detection 2 "L" at paper pass
4 Cassette detection switch CED1 Micro-switch Cassette installation detection "L" at cassette insertion
5 Manual feed detection
switch
MFD Transmission sensor Manual feed paper detection
(single only)
"L" at paper detection
6 PPD1 sensor PPD1 Transmission sensor Paper transport detection 1 "L" at paper pass
7 Door switch DSW Micro-switch Door open/close detection
(safety switch for 24V)
1 or 0V of 24V at door open

AR-5012 EXTERNAL VIEWS AND INTERNAL STRUCTURES 4 - 5
6. PWB unit
2
4
5
1
8
3
6
7
No. Name Function
1 Exposure lamp invertor PWB Exposure lamp (CCFL) control
2 Main PWB (MCU) Copier control
3 Operation PWB Operation input/display
4 Power PWB AC power input, DC voltage control, High voltage control
5 CCD sensor PWB For image scanning
6 LSU motor PWB For polygon motor drive
7 TCS PWB For toner sensor control
8 LSU PWB For laser control

AR-5012 EXTERNAL VIEWS AND INTERNAL STRUCTURES 4 - 6
7. Cross sectional view
3
4
5
8
9
6
7
10
11
12
1
2
No. Part name Function and operation
1 Scanner unit Illuminates the original with the copy lamp and passes the reflected light to the lens unit(CCD).
2 Exposure lamp Exposure lamp (CCFL) Illuminates original
3 LSU (Laser unit) Converts the original image signal into laser beams and writes onto the drum.
4 Paper exit roller Roller for paper exit
5 Main charger Provides negative charges evenly to the drum surface.
6 Heat roller Fuses toner on the paper. (Teflon roller)
7 Pressure roller Fuses toner on the paper. (Silicon rubber roller)
8 Drum Forms images.
9 Transfer unit Transfers images onto the drum.
10 Manual paper feed roller Transport the paper from the manual paper feed port.
11 PS roller unit Takes synchronization between the lead edge and the rear edge of the paper.
12 Paper feed roller Picks up a sheet of paper from the cassette.

AR-5012 UNPACKING AND INSTALLATION 5 - 1
[5] UNPACKING AND INSTALLATION
1. Copier installation
Improper installation may damage the copier. Please note the following
during initial installation and whenever the copier is moved.
Caution: If the copier is moved from a cool place to a warm place, con-
densation may form inside the copier. Operation in this condi-
tion will cause poor copy quality and malfunctions.
Leave the copier at room temperature for at least 2 hours
before use.
Do not install your copier in areas that are:
•damp, humid, or very dusty
•exposed to direct sunlight
•poorly ventilated
•subject to extreme temperature or humidity changes, e.g., near an
air conditioner or heater.
The copier should be installed near an accessible power outlet for easy
connection.
Be sure to connect the power cord only to a power outlet that meets
the specified voltage and current requirements.
Also make certain the outlet is properly grounded.
Be sure to allow the required space around the machine for servicing
and proper ventilation.
2. Cautions on handling
Be careful in handling the copier as follows to maintain the perfor-
mance of this copier.
Do not drop the copier, subject it to shock or strike it against any
object.
Do not expose the drum cartridge to direct sunlight.
Doing so will damage the surface (green portion) of the drum cartridge,
causing poor print quality.
Store spare supplies such as drum cartridges and TD cartridges in a
dark place without removing from the package before use.
If they are exposed to direct sunlight, poor print quality may result.
Do not touch the surface (green portion) of the drum cartridge.
Doing so will damage the surface of the cartridge, causing poor print
quality.
3. Checking packed components and
accessories
Open the carton and check if the following components and accesso-
ries are included.
20cm (
20cm (8")
10cm
(4")
10cm
(4")
Drum cartridge
(installed in unit)
Operation manual
Power cord

AR-5012 UNPACKING AND INSTALLATION 5 - 2
4. Unpacking
Be sure to hold the handles on both sides of the copier to unpack the
copier and carry it to the installation location.
5. Removing protective packing materials
1) Remove pieces of tape and protective cover. Then open the origi-
nal cover and remove protective materials (a) and (b).
2) Release the scan head locking switch.
3) Ensure that the bypass tray is open and then open the side cover
by pressing the open button on the side cover.
6. Developer unit installation
1) 2) 3) Open the side and front cabinets of the copier.
4) Remove the locking tape of the developer unit.
5) Remove the screw which is fixing the copier and Developer unit.
6) Remove Developer unit slowly from the copier.
7) Remove the screw (1 pc).
8) Remove Upper developer unit.
9) Shake the aluminum bag to stir developer
10) Supply developer from the aluminum bag to the top of the MX roller
evenly.
Note: Be careful not to splash developer outside Developer unit.
AR-5012AR-5012
Lock Unlock
Grasp here and turn in
the direction of the arrow.
2
4
5
3
1

AR-5012 UNPACKING AND INSTALLATION 5 - 3
11) Attach Upper developer unit and fix it with a screw.
12) Rotate the MG roller gear to distribute developer evenly.
Note: Never rotate the gear in the reverse direction.
Note: When carrying Developer unit, do not tilt it extremely as
shown with the arrow in the figure below.
(Prevention of splash of developer)
13) Insert Developer unit carefully into the copier.
Note: Quick insertion may result in splash of developer. Be sure to
insert carefully.
14) Confirm that Developer unit is completely inserted to the bottom of
the machine, fix Developer unit and the machine with a screw.
15) Completion of Developer unit installation
7. Toner cartridge installation
1) To prevent against uneven distribution of toner, hold Toner unit
with both hands and shake it several times horizontally.
2) Hold the section of Toner unit shown in the figure below, remove
the packing tape, and remove the cushion.
3) Pull out the cushion in the arrow direction.
4) Insert Toner unit carefully into the copier.
5) Insert until the hook is engaged with the copier as shown in the fig-
ure below.
6) Pull out the shutter in the arrow direction.
Note: Do not hold and carry the shutter. Otherwise the shutter may
drop and Toner unit may drop.
7) Completion of Toner unit installation
Close the front and side cabinets.

AR-5012 UNPACKING AND INSTALLATION 5 - 4
8. Loading copy paper
Note: This copier is equipped with two paper trays. Load copy paper
into the two paper trays.
1) Raise the handle of the paper tray and pull the paper tray out until
it stops.
2) Remove the pressure plate lock. Rotate the pressure plate lock in
the direction of the arrow to remove it while pressing down the
pressure plate of the paper tray.
3) Store the pressure plate lock that was removed in step 2 and the
screw that was removed when unpacking the machine in the front
of the paper tray. To store the pressure plate lock, rotate the lock
to fix it on the relevant location.
4) Adjust the paper guides on the paper tray to the copy paper width
and length.
Squeeze the lever of paper guide (A) and slide the guide to match
with the width of the paper.
Move paper guide (B) to the appropriate slot as marked on the
tray.
5) Fan the copy paper and insert it into the tray. Make sure the edges
go under the corner hooks.
Note: Do not load paper above the maximum height line ( ).
Exceeding the line will cause a paper misfeed.
6) Gently push the paper tray back into the copier.
Note: After loading copy paper, to cancel the blinking "H" without
restarting copying, press the clear ( ) key. The "P" in the
display will go out and the ready ( ) indicator will light up.
9. Power to copier
1) Ensure that the power switch of the copier is in the OFF position.
Insert the attached power cord into the power cord socket at the
rear of the copier.
2) Plug the other end of the power cord into the nearest outlet.
10. Moving
Moving instructions
When moving the unit, follow the procedure below.
Note: When moving this unit, be sure to remove the TD cartridge in
advance.
1) Turn the power switch off and remove the power cord from the out-
let.
2) Open the side cover and front cover, in that order. Remove the TD
cartridge and close the front cover and side cover, in that order.
To open and close the side cover and front cover, and to remove
the TD cartridge, see "TD CARTRIDGE REPLACEMENT".
3) Raise the handle of the paper tray and pull the paper tray out until it
stops.
4) Push the center of the pressure plate down until it locks in place
and lock the plate using the pressure plate lock which has been
stored in the front of the paper tray.
5) Push the paper tray back into the unit.
6) Lock the scan head locking switch.
Note: When shipping the unit, the scan head locking switch must be
locked to prevent shipping damage.
7) Close the multi-bypass tray and the paper output tray extension,
and attach the packing materials and tape which were removed
during installation of the unit. See "PREPARING THE UNIT FOR
INSTALLATION".
8) Pack the unit into the carton. See "CHECKING PACKED COMPO-
NENTS AND ACCESSORIES".
Paper
guide (B)
Paper
guide (A)