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Oki ML280 Elite - User Manual

Oki ML280 Elite
52 pages
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ML280 ELITE
user's guide
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Oki ML280 Elite Specifications

General IconGeneral
ColorNo
Character pitch10, 12, 15, 17.1, 20 cpi
Maximum resolution240 x 216 DPI
Typestyles supportedDouble height, Double width, Emphasised, Enhanced, Italics, Overscore, Underline
Maximum number of copies3 copies
Maximum print speed (draft)240 cps
Maximum printing width (columns)160
Mean time between failures (MTBF)20000 h
Product colorGray
Sound pressure level (printing)58 dB
Sound pressure level (quiet mode)51 dB
Standard interfacesParallel, USB 2.0
Optional connectivitySerial (RS-232), Serial (RS-422)
AC input voltage220 - 240 V
Voltage tolerance10 %
AC input frequency50 - 60 Hz
Power consumption (typical)60 W
Weight and Dimensions IconWeight and Dimensions
Depth275 mm
Width372 mm
Height80 mm

Summary

Introduction to the ML280 Elite Users Guide

Using This Manual

Guidance on how to navigate and utilize the user manual for optimal printer setup and operation.

Online Usage

Instructions for accessing and navigating the user manual electronically using Adobe Acrobat Reader.

Printing Pages

Procedure for printing the entire manual, selected pages, or the current page via the print dialogue.

Getting Started with Your Printer

Printer Location

Recommendations for selecting a suitable, firm, and stable surface for printer placement.

Contents and Unpacking

Instructions for checking package contents and retaining packing materials for future transport needs.

Removing Shipping Restraints

Step-by-step guide to safely remove packing tape and printhead shipping restraints before initial use.

Ribbon Cartridge Handling

Guidelines for handling ribbon cartridges, including storage and precautions against ink stains.

Install Ribbon Cartridge

Instructions on unpacking and installing the new ribbon cartridge onto the printhead mechanism.

Installing the Platen Knob

Procedure for correctly aligning and firmly installing the platen knob onto the printer.

Adjusting the Printhead Gap

Guide to adjusting the print head gap for optimal print quality and paper feed based on stationery type.

Fitting the Paper Separator

Instructions for fitting the paper separator to prevent paper jams with single sheets and continuous stationery.

Setting Up Your Printer

Power Connection

Steps for connecting the printer to a power source for both AC and DC models, including a warning about polarity.

Loading Paper Overview

Overview of the three paper types supported by the printer and general guidance for using fan-fold paper.

Rear Feed Continuous Form Fan-Fold Paper

Detailed instructions for loading continuous form fan-fold paper using the rear feed path.

Bottom Feed Continuous Form Fan-Fold Paper

Instructions for loading continuous fan-fold paper using the bottom feed path with a slotted printer stand.

Top Feed Single Sheet Paper

Guide to loading single sheets of paper from the top feed, including paper separator adjustment.

Testing Your Printer

Procedure for performing a built-in self-test to verify printer setup and functionality, including interpreting test print results.

Computer Connections Overview

Overview of computer connection options, noting recommendations against simultaneous serial/USB and parallel connections.

Parallel (LPT) Connection (IEEE 1284)

Instructions for connecting the printer via a bi-directional parallel cable, emphasizing turning off devices first.

USB Connection

Steps for connecting the printer via a USB 1.1 cable, noting hot-pluggable protocol and specific PC requirements.

Serial Connection

Guide for connecting the printer using a serial interface board, requiring RS232C compliance and turning off devices.

Printer Drivers

Explanation of printer drivers, their role in computer communication, and how to obtain or select compatible drivers.

Operating Your Printer

Front Panel Operation

Detailed explanation of the printer's front panel indicators and buttons, describing their functions and operations.

Additional Button Functions at Power ON

Describes special functions activated by pressing specific buttons during the printer's power-on sequence.

Setting Printer Defaults

Information on the printer's internal MENU for setting default conditions to match computer parameters.

Entering the Menu Mode

Step-by-step instructions to enter the printer's MENU mode for configuring default settings and options.

Default Menu Selections

Table detailing default menu selections for various printer settings like Font, Graphics, and Interface options.

Using the Pull Tractor Unit

Instructions for loading paper using the pull tractor unit, including adjusting the tractors for paper width.

Using the Cut-Sheet Feeder

Guide to setting up and loading paper into the cut-sheet feeder, including paper guide adjustments.

Manual Loading with Cut-Sheet Feeder

Steps for loading a paper stack into the cut-sheet feeder and cautionary advice regarding simultaneous feeding.

Using the Roll Paper Stand

Instructions for loading paper onto the roll paper stand, ensuring correct orientation and paper path.

Maintenance Procedures

Replacing the Ribbon Cartridge

Reference to the detailed procedure for replacing the ribbon cartridge, located in the 'Getting Started' section.

Adjusting the Printhead Gap

Reference to the guide for adjusting the printhead gap, found in the 'Getting Started' section.

Loading Paper

Reference to the detailed instructions for loading paper, as provided in the 'Setting Up Your Printer' section.

Testing Your Printer

Reference to the procedure for testing the printer's functionality, located in the 'Setting Up Your Printer' section.

Troubleshooting Printer Issues

General Information Checks

General checks and common issues to verify before proceeding with detailed troubleshooting steps for printer problems.

Troubleshooting: Power ON Issues

Troubleshooting steps for the issue where the printer does not power on, focusing on power connections and fuses.

Troubleshooting: No Print on Data Send

Diagnostic steps for when the printer fails to print, checking the SEL light, cable connections, and serial interface seating.

Troubleshooting: Incorrect CharactersFonts

Solutions for printing incorrect characters or fonts, involving printer driver emulation and embedded commands.

Troubleshooting: Ink Smearing

Troubleshooting for ink smearing, likely caused by the print head gap being too close, recommending adjustment.

Troubleshooting: Smearing After Ribbon Change

Solution for smeared printing after ribbon replacement, usually due to a loose or missing ribbon shield.

Troubleshooting: Missing Dots in Output

Fix for missing dots in printouts, often caused by incorrect head gap settings or a damaged printhead.

Troubleshooting: Flashing ALARM Light

Troubleshooting steps for a flashing ALARM light, suggesting a power cycle and contacting service if the issue persists.

Troubleshooting: Non-functional Front Panel Keys

Explanation for non-functional front panel keys, possibly due to 'Limited Function' setting via Operator Panel Function.

Troubleshooting: False Paper Out Error

Solution for false 'Paper out' errors, usually caused by the paper sensor groove in the platen not being covered.

Troubleshooting: Torn Sprocket Holes on Continuous Paper

Fix for torn sprocket holes with continuous paper, typically resolved by setting the paper lever to 'Fan-fold' mode.

Clearing Paper Jams

General procedure for clearing paper jams, starting with turning off the printer and removing torn paper.

Rear Feed Jams

Specific steps for clearing paper jams occurring in the rear feed path, including handling potential hot printheads.

Repeating Rear Feed Jams

Identifies causes for repeating rear feed paper jams, such as defective or misaligned paper, and debris.

Single Sheet Paper Jams

Procedure for clearing paper jams when using single sheets of paper, involving access cover and platen knob.

Parts and Accessories

Purchasing Parts & Accessories

Guidance on purchasing printer parts and accessories, advising to note the model name and consult dealers or the website.

Optional Accessories

List of optional accessories available for the printer, such as tractor units, roll stands, and interface cards.

Printer Specifications

Print Method and Printhead

Details the print method used by the printer, specifying it as impact dot matrix with 9 pins and printhead features.

Emulations and Print Speed

Lists supported printer emulations and details the various print speeds for different modes.

Paper Specifications

Table outlining paper specifications, including type, feed, weight, and width range for different paper formats.

Reliability Metrics

Provides reliability metrics such as ribbon life, printhead life, and Mean Time Between Failures (MTBF).

General Printer Characteristics

Lists general physical characteristics of the printer, including dimensions, weight, buffer size, noise level, and power requirements.

Interface Specifications

Specifies the standard and optional interface types supported by the printer, including USB and serial connections.

OKI Contact Details

Oki Systems (UK) Limited

Contact details for Oki Systems (UK) Limited, including address, telephone, fax, and website.

Oki Systems Ireland Limited

Contact information for Oki Systems Ireland Limited, providing address, phone, fax, and web details.

OKI Systems Northern Ireland

Contact details for OKI Systems Northern Ireland, including address, telephone, and website.

Technical Support for Ireland

Specific contact information for technical support covering all of Ireland, including phone, fax, and email.

Oki Data Corporation (Japan)

Contact details for Oki Data Corporation in Japan, including address, phone, and fax numbers.

Oki Data (Singapore) Pte. Ltd.

Contact information for Oki Data (Singapore) Pte. Ltd., providing address, phone, and fax details.

Oki Systems (Thailand) Ltd.

Contact details for Oki Systems (Thailand) Ltd., including address, telephone, fax, and website.

Oki Hong Kong Limited

Contact information for Oki Hong Kong Limited, providing address, phone, and fax numbers.

The IPL Group (Australia)

Contact details for The IPL Group in Australia, including address, phone, fax, and website.

Comworth Systems Ltd. (New Zealand)

Contact information for Comworth Systems Ltd. in New Zealand, providing address, phone, and fax details.

Oki Data (S) P Ltd. Malaysia Rep Office

Contact details for Oki Data (S) P Ltd. Malaysia Representative Office, including address, phone, and fax.

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