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If you have a specific, identifiable problem with your product, you may be able to find help by using our troubleshooting section below.

Select your product and enter ONE keyword

How to remove jammed paper

Paper handling is key to ensure trouble-free printing. However, sometime paper jams occur.
Where can I find a Windows 8 x64 driver for my product?

Printer and multifunction products connected to PCs running Windows 8 x64 and Windows Server 2012
Where can I find the serial number?

The serial number is a unique sequence of numbers and/or letters which is used to identify your product.
How to change the toner cartridges
How to change the image drum

The printer contains four image drums: cyan, magenta, yellow and black
Why are the colours printed different from those on the monitor?

There will always be a difference between the two devices due to the fact that they use different technologies to represent colours.
What are the differences between GDI, PCL and PostScript printers?

Printers use a set of operating commands that determine how data sent from the computer is interpreted and acted upon.
What are all the ports on my printer for?

On the back of your printer you will see a selection of different ports, ranging from the power socket to network and usb ports and perhaps a parallel port.
Selecting suitable Recycled Paper

Using recycled paper has a positive impact on the environment but did you know that they type of recycled paper you use can have an impact on the quality and paper handling of your day to day printing.
What is 'K' toner?

The letter 'K' is generally used to describe BLACK toner or ink
Get to know your product

Learn how to identify the name of your printer and the consumables used in it.
What does "Fatal Error" mean?

If your printer displays a "Fatal Error" message it means that a problem has occurred requiring you to take action
Changing OS settings and enabling installation with Mac OS X 'Mountain Lion'

There are some limitations when a current driver from the website is used with Mac OS X 'Mountain Lion'
How do I find and resolve Toner Sensor Errors?

If your printer displays a toner sensor error please check the following:
I installed a printer under Windows NT. The Windows test page sent to the printer shows "Letter tray Request" on the front panel.

Check your regional setting first. It may set as "USA"?
OKI Printer Driver Compatibility with Windows 8 / Server 2012

We want our customers have the best experience with our printers and multifunction printers, when connected to PCs running Windows 8.
OKI Printer Driver Compatibility with Mac OS X 'Mountain Lion'

Apple released their latest version of Mac OS X called Mountain Lion (10.8) in July 2012
Wireless Printing

How to connect an OKI printer or MFP to a network wirelessly or by utilising mains wiring
OKI and Mobile Printing

Conducting business as usual while on the move
How to edit existing templates in Template Manager

Templates are pre-developed page layouts that can be used to create new documents with a similar design, pattern or style.
Strange error messages appear on the Mac print queue

Printing is unaffected by this issue
OKI Printer Driver Compatibility with Mac OS X Lion

Apple Mac OS X Lion compatibility
Installing drivers on Windows 7 via plug and play

Brief step by step overview on installing drivers on windows 7 via plug and play
OKI Printer Driver Compatibility with Windows 7

It is our aim at OKI that our customers have the best experience with our printers and multifunctional products, when connected to PCs running Windows 7.
OKI Printer Driver Compatibility with Snow Leopard

Apple Mac OS X Snow Leopard (10.6) Compatibility
How to identify print quality problems on your colour printer/MFP

This article describes how to use the OKI CMYK Downloader utility, which prints Cyan, Magenta, Yellow and Black test pages on the printer/MFP to help diagnose the cause of print quality problems.
Citrix Ready OKI Drivers

OKI Data worldwide is proud to be a member of the Citrix Global Alliance Partner program at the Technology Partner level.

C5850

Select your product and enter ONE keyword

How to remove jammed paper

Where can I find a Windows 8 x64 driver for my product?

Where can I find the serial number?

How to change the toner cartridges

How to change the image drum

Why are the colours printed different from those on the monitor?

What are the differences between GDI, PCL and PostScript printers?

What are all the ports on my printer for?

Selecting suitable Recycled Paper

What is 'K' toner?

Get to know your product

What does "Fatal Error" mean?

Changing OS settings and enabling installation with Mac OS X 'Mountain Lion'

How do I find and resolve Toner Sensor Errors?

I installed a printer under Windows NT. The Windows test page sent to the printer shows "Letter tray Request" on the front panel.

OKI Printer Driver Compatibility with Windows 8 / Server 2012

OKI Printer Driver Compatibility with Mac OS X 'Mountain Lion'

Wireless Printing

OKI and Mobile Printing

How to edit existing templates in Template Manager

Strange error messages appear on the Mac print queue

OKI Printer Driver Compatibility with Mac OS X Lion

Installing drivers on Windows 7 via plug and play

OKI Printer Driver Compatibility with Windows 7

OKI Printer Driver Compatibility with Snow Leopard

How to identify print quality problems on your colour printer/MFP

Citrix Ready OKI Drivers

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