Troubleshooting

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CHECK THE USB CONNECTION

1Check the USB cable for any obvious damage. If the cable is damaged, then use a new one.

2Firmly plug the square end of the USB cable into the back of the printer.

3Firmly plug the rectangular end of the USB cable into the USB port of the computer.

The USB port is marked with .

Note: If you continue to have problems, then try another USB port on the computer. You may have connected to a defective port.

REMOVE AND REINSTALL THE PRINTER SOFTWARE

Printer is printing blank pages

Blank pages may be caused by improperly installed ink cartridges.

REINSTALL THE INK CARTRIDGES AND DEEP CLEAN AND ALIGN THE PRINTHEAD

1Reinstall the ink cartridges. For more information, see “Replacing ink cartridges” on page 17. The cartridges should click firmly into their matching color slots.

2Load plain, unmarked paper.

3From the printer control panel, navigate to:

> Setup > OK > Maintenance > OK > Deep Clean Printhead > OK

4Press the up or down arrow button to scroll to a cleaning option, and then press OK . Wait until the printer is ready.

5From the printer control panel, navigate to:

> Setup > OK > Maintenance > OK > Align Printer > OK

An alignment page prints.

Note: Do not remove the alignment page until printing is finished.

Printer is busy or does not respond

If the "Before you troubleshoot" checklist does not solve the problem, then try one or more of the following:

MAKE SURE THE PRINTER IS NOT IN SLEEP MODE

If the power light is blinking on and off slowly, then the printer is in Sleep mode. Press to wake up the printer.

If the printer will not come out of Sleep mode, then reset the power:

1Unplug the power cord from the wall outlet, and then wait 10 seconds.

2Insert the power cord into the wall outlet, and then turn on the printer.

If this problem persists, then check our Web site for updates for your printer software or firmware.

RECONNECT THE PRINTER POWER SUPPLY

1Turn off the printer.

Note: Make sure the printer is not in Sleep mode. Press and hold for three seconds to turn off the printer.

2Unplug the power cord from the wall outlet, and then pull out the power cord from the power supply.

3After one minute, reconnect the power cord into the power supply, and then plug the power cord into the wall outlet.

4Turn on the printer.

Cannot delete documents from the print queue

If you have jobs stuck in the print queue and cannot delete them to get other jobs to print, then the computer and printer may not be communicating.

RESTART THE COMPUTER AND TRY AGAIN

REMOVE AND RECONNECT THE USB CABLE CONNECTED TO YOUR PRINTER

Cannot print through USB

If the "Before you troubleshoot" checklist does not solve the problem, then try one or more of the following:

CHECK THE USB CONNECTION

1Check the USB cable for any damage. If the cable is damaged, then use a new one.

2Firmly plug the square end of the USB cable into the back of the printer.

3Firmly plug the rectangular end of the USB cable into the USB port of the computer.

The USB port is marked with .

Note: If you continue to have problems, then try another USB port on the computer. You may have connected to a defective port.

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Lexmark PRO4000C manual Printer is printing blank pages, Printer is busy or does not respond, Cannot print through USB

PRO4000, PRO4000C specifications

The Lexmark PRO4000 and PRO4000C are innovative printers designed primarily for small to medium-sized businesses, offering a blend of high-quality printing and advanced technology. These models are well-known for their superior performance, efficiency, and the durability required in today’s fast-paced work environments.

One of the standout features of the Lexmark PRO4000 series is its speed. The printers can deliver up to 40 pages per minute for monochrome documents, ensuring that large print jobs are completed without unnecessary delays. The PRO4000C, being a color version, also performs impressively, providing vibrant color output while maintaining a fast print speed.

Image quality is paramount in any business setting, and both models excel in this area. They utilize Lexmark’s advanced print technology to produce sharp text and vivid graphics. With a resolution of up to 1200 x 1200 dpi, the PRO4000 and PRO4000C ensure that every document, from reports to marketing materials, is rendered with exceptional clarity and detail.

Another significant technology integrated into these printers is Lexmark’s Unison toner system. This system not only promotes consistent print quality but also simplifies the replacement process. The toners are designed to yield a high number of pages, reducing the frequency of changes and, consequently, the overall cost of ownership.

In terms of connectivity, both models provide a versatile range of options. They support USB, Ethernet, and wireless connectivity, enabling seamless integration into any office network. Additionally, mobile printing capabilities are supported, allowing users to print directly from smartphones and tablets, enhancing convenience and flexibility.

Security is another critical consideration for businesses, and Lexmark has incorporated robust features to protect sensitive information. These printers come equipped with secure print management solutions that require user authentication before jobs can be retrieved, ensuring that confidential documents remain private.

Moreover, the Lexmark PRO4000 series is designed with ease of use in mind. An intuitive touchscreen interface simplifies navigation through various settings and functionalities, allowing users to operate the printer effectively without extensive training.

In summary, the Lexmark PRO4000 and PRO4000C are exceptional printers that combine speed, quality, and advanced technologies to cater to the diverse needs of modern businesses. Their impressive features make them valuable assets for any office setting, promoting productivity and enhancing overall workflow efficiency.