Brother HL-2700CN Series User manual

Brother Color Laser Printer
SERVICE MANUAL
MODEL: HL-2700CN
Read this manual thoroughly before maintenance work.
Keep this manual in a convenient place for quick and easy reference at all times.
October 2005

© Copyright Brother 2003
All rights reserved.
No part of this publication may be reproduced in any form or by any means without permission in
writing from the publisher.
Specifications are subject to change without notice.
Trademarks:
The brother logo is a registered trademark of Brother Industries, Ltd.
Apple, the Apple Logo, and Macintosh are trademarks, registered in the United States and other
countries, and True Type is a trademark of Apple computer, Inc.
Epson is a registered trademark and FX-80 and FX-850 are trademarks of Seiko Epson
Corporation.
Hewlett Packard is a registered trademark and HP Laser Jet is a trademark of Hewlett Packard
Company.
IBM, IBM PC and Proprinter are registered trademarks of International Business Machines
Corporation.
Microsoft and MS-DOS are registered trademarks of Microsoft Corporation.
Windows is a registered trademark of Microsoft Corporation in the U.S. and other countries.

PREFACE
This service manual contains basic information required for after-sales service of the color laser
printer (here-in-after referred to as "this machine" or "the printer"). This information is vital to the
service technician to maintain the high printing quality and performance of the printer.
This service manual covers the HL-2700CN color laser printer.
This manual consists of the following chapters:
CHAPTER I : OUTLINE OF PRODUCT
Features, parts names, internal structure, and description of the control panel.
CHAPTER II : SPECIFICATIONS
Specifications, etc.
CHAPTER III : INSTALLATION
Installation conditions and installation procedures.
CHAPTER IV : STRUCTURE OF SYSTEM COMPONENTS
Basic operation of the mechanical system, the electrical system and the
electrical circuits and their timing information.
CHAPTER V : CONTROL PANEL OPERATION
Operation and setting procedures on the control panel.
CHAPTER VI : PERIODIC MAINTENANCE
Description of periodic maintenance parts, and procedures for periodic
replacement and cleaning.
CHAPTER VII : DISASSEMBLY
Procedures for replacement of the mechanical system parts.
CHAPTER VIII : TROUBLESHOOTING
Description of error messages on the control panel, troubleshooting image
failure, etc.
APPENDICES :SERIAL NO. DESCRIPTIONS, ETC.
Information in this manual is subject to change due to improvement or re-design of the product. All
relevant information in such cases will be supplied in service information bulletins (Technical
Information).
A thorough understanding of this printer, based on information in this service manual and service
information bulletins, is required for maintaining its print quality performance and for improving the
practical ability to find the cause of problems.

CONTENTS
CHAPTER I PRODUCT OUTLINE .....................................................I-1
1. FEATURES......................................................................................................I-1
2. PARTS NAMES & FUNCTIONS ......................................................................I-4
3. INTERNAL STRUCTURE ................................................................................I-6
4. DESCRIPTION OF CONTROL PANEL ...........................................................I-7
4.1 Video Controller Mode ......................................................................................................... I-7
4.2 Engine Controller Mode ....................................................................................................... I-7
CHAPTER II SPECIFICATIONS....................................................... II-1
1. RATING ..........................................................................................................II-1
2. GENERAL SPECIFICATIONS ........................................................................II-2
2.1. Printing ............................................................................................................................... II-2
2.2. Functions............................................................................................................................ II-3
2.3. Electrical and Mechanical .................................................................................................. II-3
2.4. Network .............................................................................................................................. II-4
2.5. Paper Specification ............................................................................................................ II-5
2.6. Toner Cartridge Weight information................................................................................... II-9
3. ENVIRONMENTAL CONDITION ...................................................................II-10
3.1 Ambient Temperature / Humidity / Altitude ....................................................................... II-10
CHAPTER III INSTALLATION......................................................... III-1
1. CONDITIONS REQUIRED FOR INSTALLATION..........................................III-1
1.1. Environmental Conditions ................................................................................................. III-1
1.2. Basic Layout of Printer Set-up Location............................................................................ III-1
2. UNPACKING..................................................................................................III-2
2.1 Unpacking of Printer........................................................................................................... III-2
2.2 Unpack the Starter Kit ........................................................................................................ III-4
3. INSTALLATION WORK .................................................................................III-5
3.1 Install the Toner Cartridge PU............................................................................................ III-5
3.2 Install the OPC Belt Cartridge ............................................................................................ III-6
3.3 Install the Toner Cartridge to the Printer............................................................................ III-8
3.4 Test Print ............................................................................................................................ III-9
CHAPTER IV STRUCTURE OF SYSTEM COMPONENTS............IV-1
1. BASIC STRUCTURE .................................................................................... IV-1
1.1 Print System and Transfer System ....................................................................................IV-6
1.2 Laser Assy PU..................................................................................................................IV-20
1.3 Paper Transportation System ..........................................................................................IV-22
1.4 Fusing Unit .......................................................................................................................IV-24

2. STRUCTURE OF THE CONTROL SYSTEM.............................................. IV-26
2.1 Basic Structure .................................................................................................................IV-26
2.2 Control System.................................................................................................................IV-34
2.3 Main PCB (Video Controller PCB) ...................................................................................IV-42
2.4 Power Supply Unit............................................................................................................IV-56
2.5 High Voltage Power Supply Unit......................................................................................IV-61
2.6 Wiring Diagram.................................................................................................................IV-64
CHAPTER V CONTROL PANEL OPERATION .............................. V-1
1. PANEL LAYOUT ............................................................................................ V-1
2. VIDEO CONTROLLER MODE....................................................................... V-2
2.1 Configuration of Operational Mode .....................................................................................V-2
2.2 Line Test Mode....................................................................................................................V-3
2.3 DRAM Test Mode................................................................................................................V-8
2.5 NVRAM Reset Mode...........................................................................................................V-9
3. ENGINE CONTROLLER MODE .................................................................. V-10
3.1 Configuration of Operational Mode ...................................................................................V-10
3.2 Operation of Normal Mode................................................................................................V-12
3.3 Service Mode ....................................................................................................................V-19
3.4 Adjustment Work Procedures ...........................................................................................V-42
CHAPTER VI PERIODIC MAINTENANCE......................................VI-1
1. GENERAL..................................................................................................... VI-1
1.1 Precautions in Handing ......................................................................................................VI-1
1.2 Cleaning for Periodic Maintenance ....................................................................................VI-4
1.3 Periodic Maintenance Parts and Maintenance Cycle ......................................................VI-10
2. PERIODIC MAINTENANCE PROCEDURES.............................................. VI-12
2.1 Replacement of OPC Belt Cartridge ................................................................................VI-12
2.2 Replacement of Fusing Unit.............................................................................................VI-14
2.3 Replacement of Transfer Roller Assy PU ........................................................................VI-16
2.4 Replacement of Cleaning Roller Cover PU......................................................................VI-18
2.5 Replacement of Paper Feed Roller and Separator Pad ..................................................VI-20
2.6 Replacement of Transfer Unit PU ....................................................................................VI-24

CHAPTER VII DISASSEMBLY......................................................VII-1
1. REPLACEMENT PROCEDURE OF MAINTENANCE PARTS..................... VII-1
2. PARTS NAME............................................................................................... VII-4
2.1 Cover.................................................................................................................................VII-4
2.2 Arrangement Boards .........................................................................................................VII-5
2.3 Motor Units ........................................................................................................................VII-5
2.4 Clutches and Solenoids ....................................................................................................VII-6
2.5 Sensors .............................................................................................................................VII-6
3. DISASSEMBLY FLOW ................................................................................ VII-7
4. DISASSEMBLY PROCEDURE .................................................................. VII-11
4.1 OPC Charge Roller PU.....................................................................................................VII-11
4.2 Paper Tray ........................................................................................................................VII-11
4.3 Fuser Unit .........................................................................................................................VII-12
4.4 Cleaning Roller Cover PU / Cleaning Roller PU.............................................................VII-116
4.5 Top Cover Assy PU / Top Cover PU ................................................................................VII-17
4.6 Right Side Cover PU.........................................................................................................VII-18
4.7 Main PCB..........................................................................................................................VII-18
4.8 Left Side Cover PU / Duplex Connector Cover ................................................................VII-19
4.9 Interlock Switch PU (Front)...............................................................................................VII-19
4.10 I/O Board Cover PU / I/O Board PU ...............................................................................VII-20
4.11 Power Supply Fan PU / Interlock Switch PU (Top, Paper Exit) /
Power Supply Fan Duct PU............................................................................................VII-21
4.12 Waste Toner Auger PU...................................................................................................VII-22
4.13 Waste Toner Agitator PU................................................................................................VII-22
4.14 Erase Lamp PU ..............................................................................................................VII-23
4.15 Marker Sensor ................................................................................................................VII-24
4.16 Toner Density Sensor PU...............................................................................................VII-24
4.17 Cleaning Roller Clutch PU..............................................................................................VII-25
4.18 Main Motor PU................................................................................................................VII-25
4.19 Fuser Clutch PU .............................................................................................................VII-26
4.20 TR Cam Clutch ...............................................................................................................VII-27
4.21 Registration Clutch PU ...................................................................................................VII-27
4.22 Paper Feed Clutch PU....................................................................................................VII-28
4.23 Developer Motor PU .......................................................................................................VII-28
4.24 Waste Toner Holder Assy PU.........................................................................................VII-29
4.25 Developer Clutch PU (DCLY/DCLM/DCLC/DCLK) ........................................................VII-29
4.26 Developer Gear PU / Developer Drive Assy PU ............................................................VII-30
4.27 OPC Drive Gear Assy PU...............................................................................................VII-30
4.28 Main Drive Gear Assy PU...............................................................................................VII-31
4.29 Waste Toner Feeder PU.................................................................................................VII-32
4.30 Toner Sensor PU (TPD) .................................................................................................VII-33
4.31 Right Toner Guide PU ....................................................................................................VII-34
4.32 Laser Assy PU / Laser Unit Fan Assy PU ......................................................................VII-34
4.33 Inner Front Cover PU / Front Cover PU .........................................................................VII-36

4.34 Right Tray Guide PU.......................................................................................................VII-36
4.35 Engine Control Board PU ...............................................................................................VII-37
4.36 HV Power Supply PU......................................................................................................VII-38
4.37 LV Power Supply PU / Power Supply Bracket PU Assy.................................................VII-39
4.38 Fuser Connector PU .......................................................................................................VII-40
4.39 Toner Retract Solenoid PU (DESLY/DESLM/DESLC/DESLK) /
Toner Retract Cam PU....................................................................................................VII-41
4.40 Toner Sensor PU (TTR)..................................................................................................VII-42
4.41 Toner Present Sensor PU...............................................................................................VII-43
4.42 Belt Sensor .....................................................................................................................VII-43
4.43 Left Tray Guide PU / Paper Size Sensor PU / Room Temp Thermistor PU ..................VII-44
4.44 Left Toner Guide PU.......................................................................................................VII-45
4.45 Upper Duplex Cover / Lower Duplex Cover ...................................................................VII-45
4.46 Paper Exit Unit................................................................................................................VII-46
4.47 Transfer Roller Assy PU .................................................................................................VII-47
4.48 Transfer Base Assy PU ..................................................................................................VII-47
4.49 Registration Roller Assy PU ...........................................................................................VII-48
4.50 Registration Actuator PU ................................................................................................VII-48
4.51 Transfer Roller Guide PU ...............................................................................................VII-49
4.52 Exit Guide Assy PU / Exit Drive Assy PU / Exit Idle Roller Assy PU..............................VII-49
4.53 Paper Sensor (PFUL) .....................................................................................................VII-51
4.54 Exit Roller Assy PU / Paper Exit Actuator PU ................................................................VII-51
4.55 Fuser Exit Actuator PU...................................................................................................VII-52
4.56 Paper Sensor (PT2) ...................................................................................................VII-52
4.57 Discharging Brush PU ....................................................................................................VII-53
4.58 Exit Fan PU / Exit Fan Duct PU ......................................................................................VII-54
4.59 Rear Cover Latch Assy PU.............................................................................................VII-55
4.60 Paper Guide (A) PU........................................................................................................VII-56
4.61 Paper Guide (B) PU........................................................................................................VII-56
4.62 Paper Guide (C) PU / Paper Sensor (PT1, PEU) / OHP Sensor PU /
Tray Empty Actuator PU .................................................................................................VII-57
4.63 Paper Guide (D) PU........................................................................................................VII-58
4.64 Paper Feed Roller / Separator Pad ................................................................................VII-58
5. ADJUSTMENTS AND UPDATING OF SETTINGS, REQUIRED AFTER
PARTS REPLACEMENT .............................................................................VII-59
CHAPTER VIII TROUBLESHOOTING.........................................VIII-1
1. OUTLINE OF TROUBLESHOOTING.......................................................VIII-1
2. OPERATOR CALL ...................................................................................VIII-2
2.1 Operator call .....................................................................................................................VIII-2
2.2 In case that the operator call is not cleared .....................................................................VIII-5
3. PAPER TRANSPORT ERROR ..............................................................VIII-18
3.1 Feed Jam ........................................................................................................................VIII-18
3.2 Inner Jam ........................................................................................................................VIII-19
4. PRINTER ERROR........................................................................................VIII-20

4.1 Error Code ......................................................................................................................VIII-21
5. IMAGE FAILURE ...................................................................................... VIII-59
APPENDIX A ....................................................................................A-1
1. SERIAL NO. DESCRIPTIONS ........................................................................ A-1
2. DIAMETER / CIRCUMFERENCE OF ROLLERS............................................ A-5
3. SHELF LIFE OF EACH CONSUMABLE ......................................................... A-6
4. CONSUMABLES REPLACEMENT................................................................. A-7
5. RE-PACKING INSTRUCTIONS...................................................................... A-9
6. HIDDEN FUNCTION MENU ......................................................................... A-11
6.1 Professional Menu ..............................................................................................................A-11
6.2 Reset Parts Life ..................................................................................................................A-23
6.3 Service Menu......................................................................................................................A-24
7. TO INSTALL THE PRINTER CORRECTLY.................................................. A-27
8. HOW TO REWRITE HL2700 FLASH ROM ................................................. A-31
9. NVRAM BACKUP ........................................................................................ A-33

i
REGULATIONS
LASER SAFETY (FOR 110-120 V MODEL ONLY)
This printer is certified as a Class I laser product under the U.S. Department of Health and
Human Services (DHHS) Radiation Performance Standard according to the Radiation
Control for Health and Safety Act of 1968. This means that the printer does not produce
hazardous laser radiation.
Since radiation emitted inside the printer is completely confined within protective housings
and external covers, the laser beam cannot escape from the machine during any phase of
user operation.
FDA REGULATIONS (FOR 110-120 V MODEL ONLY)
U.S. Food and Drug Administration (FDA) has implemented regulations for laser products
manufactured on and after August 2, 1976. Compliance is mandatory for products
marketed in the United States. One of the following labels on the back of the printer
indicates compliance with the FDA regulations and must be attached to laser products
marketed in the United States.
Caution
Use of controls, adjustments or performance of procedures other than those specified in
this manual may result in hazardous radiation exposure.

ii
IEC 60825 SPECIFICATION (FOR 220-240 V MODEL ONLY)
This printer is a Class 1 laser product as defined in IEC 60825 specifications. The label
shown below is attached in countries where required.
CLASS 1LASER PRODUCT
APPAREIL Å LASER DE CLASSE 1
LASER KLASSE 1 PRODUKT
This printer has a Class 3B Laser Diode which emits invisible laser radiation in the
Scanner Unit. The Scanner Unit should not be opened under any circumstances.
Caution
Use of controls, adjustments or performance of procedures other than those specified in
this manual may result in hazardous radiation exposure.
The following caution label is attached near the scanner unit.
5mW
780nm-800nm
DANGER-
INVISIBLE LASER RADIATION WHEN OPEN.
AVOID DIRECT EXPOSURE TO BEAM.
VORSICHT -
UNSICHTBARE LASERSTRAHLUNG, WENN ABDECKUNG
GEÖFFNET UND SICHERHEITSVERRIEGELUNG
ÜBERBRÜCKT. NICHT DEM STRAHL AUSSETZEN.
DANGER-
RAYON LASER INVISIBLE LORS DE L’OUVER TURE.
EVITER L’EXPOSITION DIRECTE.
PELIGRO-
RADIACION LASER INVISIBLE AL ABRIR. EVITAR
LA EXPOSICION DIRECTA AL HAZ.
MAS
For Finland and Sweden
LUOKAN 1 LASERLAITE
KLASS 1 LASER APPARAT
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.

iii
SAFETY INSTRUCTIONS
SAFETY PRINCIPLE
1) Before starting any operations, read this manual thoroughly. Especially read the safety
instructions in this section carefully and ensure that you understand the contents.
2) Perform all the operations by following the procedures described in this manual. Follow all
the cautions and warnings set out in the procedures and on safety labels affixed to the
machine. Failure to do so may result in human injury or equipment damage.
3) Perform only the procedures explained in this manual. Refrain from opening or touching any
portions that are not related to your required operation(s).
4) Repair and replacement of parts should be performed by trained and qualified persons only.
Operators should not attempt to do such repair or replacement work.
5) It must be appreciated that the above-mentioned cautions and warnings do not cover
everything because it is impossible to evaluate all the circumstances of repair situations.
SPECIAL SAFETY INFORMATION
Introductory Information
Cautions and warnings are made clear by following the ‘Safety Alert Symbols’ or ‘Signal
Words’ such as DANGER, WARNING and CAUTION.
<SAFETY ALERT SYMBOL>
This is the safety alert. When you find this symbol placed on the equipment or marked in
this manual, be aware of the potential of human injuries. Follow the recommended
precautions and safety operation practices.
<Understanding Signal Words>
DANGER is used to indicate the presence of a hazard which will cause severe human
injuries or a fatal accident if the warning is ignored.
WARNING is used to indicate the presence of a hazard or unsafe practices which may
cause severe human injuries or a fatal accident if the warning is ignored.
CAUTION is used to indicate the presence of a hazard or unsafe practices which may
cause minor human injuries if the warning is ignored. CAUTION also calls your attention to
safety messages in this manual.
<Follow Safely Instructions>
Carefully read all the safety messages set out in this manual and also in the safety
warning signs placed on the equipment. In this manual, the safety instructions (safety alert
symbols and signal words) are enclosed in a rectangular enclosure to bring them to your
attention. Keep the safety signs on the equipment in good condition and ensure none are
missing or damaged. Replace the safety signs if unreadable or damaged. Learn how to
operate the equipment and how to use the controls properly. Do not let anyone operate
this equipment without following the instructions. Keep the equipment in proper working
condition. Unauthorized modification to the equipment may impair the function & safety
and affect the life of the equipment.
Listed below are the various kinds of “WARNING” messages contained in this manual.

iv
WARNING
HAZARDOUS VOLTAGE
May cause serious injuries or fatal accidents. Voltage is now applied from
the power supply of printer. There is a danger of electrical shock if you
touch the active area inside the printer.
Be sure to turn the power supply switch OFF and pull the plug out from the
power outlet before starting maintenance work on the printer.
WARNING
HOT SURFACE
The Fusing Unit reaches a temperature of approx.170°C and adjacent parts
are also very hot.
When you need to change the cleaning pad or remove jammed paper, wait
about 20 minutes after opening the paper exit unit to allow the unit to cool
down.
CAUTION
ROTATING PARTS
Be aware of the potential danger of various rollers and take care not to get
your fingers or hand caught into the machine, this can cause serious
injuries. Note that the exit roller that ejects the printed paper is rotating
while printing.
Be careful not to get your hair, fingers, hands, sleeve or necktie caught in
the machine while operating the machine.

v
CAUTION
HAZARDOUS POWDER
Toner is a fine powder which can cause a powder explosion if disposed of
into a fire. Under no circumstances dispose of toner into a fire.
CAUTION
HAZARDOUS POWDER
Toner is a fine powder which may cause irritation to the eyes and
respiratory organs if inhaled.
Handle the toner cartridge, waste toner pack and developing unit carefully
so as not to spill the toner.
CAUTION
POWER CORDS & PLUGS
This printer is equipped with a 3-wire power cord fitted with a 3-pronged
plug (bi-polar plug with grounding) for the user’s safety.
Use these power cords in conjunction with a properly grounded electrical
outlet to avoid an electrical shock.
CAUTION
SAFETY INTERLOCK
The front cover, paper exit unit and transfer unit of this printer have
electrical safety interlocks to turn the power off whenever they are opened.
Do not attempt to circumvent these safety interlocks.

vi
CAUTION
Do not lean against or apply any excessive force to the paper cassette,
open cover of Duplex unit. Otherwise it may cause the product to decline
or fall down and result in the injuries.
FrontDoor
LowerFeederUnit
RearCoverUnit

vii
<Label Location>
3
2
1
1. Hot Caution Label
170 C/338 F
2. Laser Caution Label
5mW
780nm-800nm
DANGER-
INVISIBLE LASER RADIATION WHEN OPEN.
AVOID DIRECT EXPOSURE TO BEAM.
VORSICHT -
UNSICHTBARE LASERSTRAHLUNG, WENN ABDECKUNG
GEÖFFNET UND SICHERHEITSVERRIEGELUNG
ÜBERBRÜCKT. NICHT DEM STRAHL AUSSETZEN.
DANGER-
RAYON LASER INVISIBLE LORS DE L’OUVER TURE.
EVITER L’EXPOSITION DIRECTE.
PELIGRO-
RADIACION LASER INVISIBLE AL ABRIR. EVITAR
LA EXPOSICION DIRECTA AL HAZ.
MAS

viii
3. Rating Label
6.0A
11.0A
(ForEurope)
(ForUS)

ix
SHIPMENT OF THE PRINTER
If for any reason you must ship the printer, carefully package the printer to avoid any
damage during transit. It is recommended that you save and use the original packaging.
The printer should also be adequately insured with the carrier.

CHAPTER I
PRODUCT OUTLINE

I-1
CHAPTER I PRODUCT OUTLINE
1. FEATURES
This printer has the following features:
2400 dpi Class Resolution
The printer prints at a default resolution of 600 dots per inch (dpi).
You can get a higher print quality, equivalent to 2400 dpi class
resolution by using Brother technologies: High Resolution Control
(HRC) and Color Advanced Photoscale Technology (CAPT).
High Speed Color Laser Printing
You can print crisp images in brilliant 24-bit color.
This printer can print at speeds up to 31 pages per minute in
monochrome mode and 8 pages per minute in full color mode. The
HL-2700CN controller uses a high speed 64-bit RISC microprocessor
and special hardware chips, to ensure fast print job processing.
High Resolution Control (HRC)
The high resolution control (HRC) technology gives you clear and
crisp printouts and improves even the 600 dpi resolution. HRC is
most effective when printing text data.
Color Advanced Photoscale Technology (CAPT)
This printer can print graphics in 256 shades for each color in PCL6
emulation and BR-Script3, producing nearly photographic quality.
CAPT is most effective when printing photographic images.
Maintenance-Free Toner Cartridge
This printer uses four easy-to-replace toner cartridges. The toner
cartridges can print up to 6,600 (Cyan, Magenta and Yellow) and
10,000 (Black) single-sided pages at approximately 5% coverage.
Universal Paper Tray
This printer loads paper automatically from the paper tray. Since the
paper tray is a universal type, a number of different paper sizes (one
paper size at a time) can be used. Even envelopes can be loaded
from the paper tray.

I-2
Three Interfaces
This printer has a high speed, bi-directional parallel interface, USB
and Ethernet 10/100BaseTX.
If your application software supports the bi-directional parallel
interface, you can monitor the printer status. It is fully compatible with
the industry-standard bi-directional parallel interface.
HL-2700CN can use the TCP/IP, IPS/SPX, Apple Talk, DLC/LLC,
Banyan VINES, DEC LAT and NetBEUI environments. Also, many
useful utilities, such as BRAdminProfessional for the administrator
and Brother network printing software, are included in the CD-ROM
supplied with the HL-2700CN printer.
Automatic Interface Selection
The printer can automatically select the bi-directional parallel, USB,
NETWORK depending on the interface port through which it receives
data. With this feature, the printer can be connected to more than one
computer.
Five Emulation Modes
The printer can emulate Hewlett-Packard Color PCL®5C (PCL6®in
monochrome mode) and PostScript®3 language emulation (Brother
BR-Script 3) printers, the industry-standard HP-GL™ plotter as well
as EPSON®FX-850™, and IBM®Proprinter XL®printers (in
monochrome mode). You can print with all application programs that
support one of these printers.
Automatic Emulation Selection
The printer can automatically select the printer emulation mode,
depending on the print commands it receives from the computer
software. With this feature, many users can share the printer on a
network.
Data Compression Technology
The printer can internally compress the received graphics and font
data in its memory so it can print larger graphics and more fonts
without additional memory.