Troubleshooting

Solving option problems

If an option does not operate correctly after it is installed or if it quits working:

Turn the printer off, wait for about 10 seconds, and turn the printer on. If this does not fix the problem, unplug the printer, and check the connection between the option and printer.

Print the menu settings page, and check to see if the option is listed in the Installed Options list. If the option is not listed, reinstall it. See Printing the menu settings page on page 64 for more information.

Make sure the option is selected in the software application you are using.

For Macintosh computer users: Make sure the printer is set up in Chooser.

The following table lists printer options and suggested corrective actions for related problems. If the suggested corrective action does not fix the problem, call your service representative.

Option

Action

Drawers

• Make sure the connection between drawers and the printer is secure.

 

• Make sure the print media is loaded correctly.

 

 

Duplex unit

Make sure the connection between the duplex unit and the printer is secure. If the duplex unit is

 

listed on the menu settings page, but print media jams when it enters or exits the duplex unit, the

 

printer and duplex unit may not be properly aligned.

 

 

Finisher

• Make sure the connection between the finisher and the printer is secure. If the finisher is listed

 

on the menu settings page, but print media jams when it exits the printer and enters the finisher,

 

it may not be properly installed. Reinstall the finisher.

 

• Make sure you are using a print media size compatible with your optional output bins. See

 

Supported print media on page 35.

 

 

Flash memory

Make sure flash memory is securely connected to the printer system board.

 

 

Hard disk with

Make sure the hard disk is securely connected to the printer system board.

adapter

 

 

 

Infrared adapter

If infrared communication stops or does not occur, make sure:

 

• The distance between the two infrared ports is 1 meter

 

(39 in.) or less. If communication does not occur between ports, move the ports closer together.

 

• Both ports are stable.

 

• The computer and the printer are on a level surface.

 

• The angle of communication between the two infrared ports is within 15 degrees of either side

 

of an imaginary line drawn between the two infrared ports.

 

• No bright light, such as direct sunlight, is interfering with communication.

 

• No objects are placed between the two infrared ports.

 

 

Internal print server

• Make sure the internal print server (also called an internal network adapter or INA) is securely

 

connected to the printer system board.

 

• Make sure you are using the correct cable, that it is securely connected, and the network

 

software is correctly set up.

 

See the drivers CD that shipped with your printer for more details.

 

 

High capacity feeder

See Solving 2000-sheet drawer problems on page 98.

(2000-sheet drawer)

 

 

 

Printer memory

Make sure printer memory is securely connected to the printer system board.

 

 

USB/Parallel

• Make sure the USB/parallel interface card is securely connected to the printer system board.

interface

• Make sure you are using the correct cable and that it is securely connected.

 

 

Solving option problems

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Lexmark 840 Solving option problems, Option Action, Supported print media on, See Solving 2000-sheet drawer problems on

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.

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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.

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