Maintaining the printer

Photoconductor kit end-of-life

To ensure print quality and to avoid damage to the printer, the printer stops operating after the photoconductor kit has reached approximately 60,000 pages (Letter/A4). The message 84 Replace PC Unit is displayed when the printer reaches this point. If the Toner Alarm setting is set to Single or Continuous (default is Off), the printer automatically notifies you before the photoconductor reaches this point and displays the message 84 PC Unit Life Warning. To avoid having the printer stop operating, replace the photoconductor kit when you first receive the 84 PC Unit Life Warning message. Once the photoconductor kit has been replaced, normal printer operation resumes.

Conserving supplies

Several settings in your application software or on the display let you conserve toner and paper. For more information on changing these settings, see the Menus and Messages Guide.

Supply

Menu selection item

What the setting does

Toner

Toner Darkness in the

Lets you adjust the level of toner released on a sheet of print media. The

 

Defaults Æ Quality Menu

values range from 1 (lightest setting) to 10 (darkest setting).

 

 

 

Print media

Multipage Print in the

Causes the printer to print the two or more page images on one side of a

 

Defaults Æ Finishing Menu

sheet. Values for Multipage Print are 2 Up, 3 Up, 4 Up, 6 Up, 9 Up, 12 Up,

 

 

and 16 Up. Combined with the duplex setting, Multipage Print lets you print

 

 

up to 32 pages on one sheet of paper (16 images on the front and 16 on the

 

 

back).

 

 

 

 

Duplex in the Defaults Æ

Duplex printing is available when you attach the optional duplex unit. It lets

 

Finishing Menu

you print on both sides of a sheet of paper.

 

 

 

 

Use your software application

Lets you examine the first copy of a multiple-copy job to be sure it is

 

or printer driver to send a

satisfactory before you print the other copies. If the job is unsatisfactory,

 

Verify Print job.

you can cancel the job.

 

 

See Printing and deleting held jobs on page 67 for more information

 

 

about a Verify Print job.

 

 

 

Ordering supplies

To order supplies in the U.S., contact Lexmark at 1-800-539-6275 for information about Lexmark Authorized Supplies Dealers in your area. In other countries or regions, visit the Lexmark Web site at www.lexmark.com or contact the place where you bought your printer.

Ordering a toner cartridge

When the 88 Toner Low message appears, you should order a new toner cartridge. You can print a few hundred pages after the 88 Toner Low message appears. You need to have a new cartridge available when the current one no longer prints satisfactorily.

Order Lexmark part number W84020H.

Ordering a photoconductor kit

When the 84 PC Life Warning message appears, you should order a new photoconductor kit. You can print a few hundred pages after the 84 PC Life Warning message appears.

Order Lexmark part number W84030H.

Photoconductor kit end-of-life

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Lexmark 840 manual Photoconductor kit end-of-life, Conserving supplies, Ordering supplies, Ordering a toner cartridge
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840 specifications

The Lexmark 840 is a versatile and robust multifunction printer designed to meet the demands of a modern office environment. This high-performance device is renowned for its impressive combination of printing, copying, scanning, and faxing capabilities, making it an invaluable asset for businesses seeking efficiency and productivity.

One of the main features of the Lexmark 840 is its high-resolution printing capability, which delivers crisp and clear documents at a speed of up to 42 pages per minute. The maximum resolution of up to 1200 x 1200 dots per inch (dpi) ensures that text and images come out looking sharp and professional. This device supports a variety of media types and sizes, including envelopes, labels, and cardstock, enabling users to tackle diverse printing tasks with ease.

In addition to its printing prowess, the Lexmark 840 boasts advanced copying features. With a copy speed of up to 42 copies per minute and the capability to enlarge or reduce the size of documents, users can easily manage large-volume copying tasks. The automatic document feeder (ADF) can handle up to 100 sheets, streamlining the copying process and saving valuable time for busy offices.

Scanning capabilities are also a notable aspect of the Lexmark 840. The device offers color and monochrome scanning with a resolution that can reach up to 600 x 600 dpi. A key highlight is its ability to scan documents directly to email, network folders, or USB, facilitating seamless document management and sharing.

In terms of technology, the Lexmark 840 integrates advanced security features to protect sensitive data. Its Secure Print functionality ensures that documents are only printed when the authorized user is present, thereby minimizing the risk of confidential information falling into the wrong hands. Additionally, the printer supports various connectivity options, including USB, Ethernet, and wireless connections, allowing users to connect their devices easily.

The Lexmark 840 is built for durability and longevity, featuring a robust design that withstands the rigors of a high-demand office. Its high-yield toner cartridges significantly reduce the total cost of ownership, making it an economical choice for organizations looking to manage their printing expenses effectively.

In summary, the Lexmark 840 combines high-speed printing, advanced copying, and efficient scanning in a single device, backed by a suite of security features and versatile connectivity options. This multifunction printer is ideal for businesses that prioritize performance and reliability in their print operations.
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