Lexmark Error 84 — What It Means & How to Fix It
By Ryan Green · Updated August 2026 · Independent guide · PrinterCare USA LLC (not affiliated with any printer manufacturer)
Lexmark error 84 stops your printer dead in its tracks, and it's frustrating because you might still have usable toner left. This error specifically tracks the imaging unit's lifespan—a component that degrades with heat and use, not just page count. The good news is that this is one of the more manageable Lexmark errors, and you have several real options to get back to work.
Most of the time, you'll either replace the imaging unit (the real long-term fix), reset the counter through the service menu (temporary), or call in remote support. Let's walk through each option so you can pick what works for your situation and budget.
How to fix it — step by step
- Power cycle and check the error code. Turn off your Lexmark printer completely and unplug it from the wall outlet. Wait for 30 seconds, then plug it back in and turn it on. Let it fully boot up and run its startup sequence. If error 84 reappears, proceed to the next step; if it clears, the issue was temporary and you may not need further action right now.
- Access the service menu on the printer display. Press and hold the Menu button on your Lexmark printer's control panel for 3 to 5 seconds until you see "Service" or "Admin" options appear on the display. Use the arrow keys to navigate to Settings or Maintenance. You're looking for an option labeled Supplies, Page Count, or Imaging Unit Life—the exact wording varies by model.
- Locate the imaging unit counter reset option. Once in the service menu, scroll down to find options related to imaging unit or supplies status. Some models show this under Statistics, Supply Status, or Device Maintenance. Write down the current page count or life percentage shown. Do not press anything yet—just confirm you can see the imaging unit information.
- Reset the imaging unit counter temporarily. Select the imaging unit or supplies option and look for a Reset or Clear Counter button. Press it when prompted and confirm your selection when the printer asks for verification. The display should show a confirmation message. Note that this reset is temporary and the counter will begin climbing again—this buys you time, not a permanent fix.
- Order a replacement imaging unit if the reset fails. If the counter reset did not clear error 84, or if the error reappears within a few days, you need a genuine Lexmark imaging unit for your specific model. Find your exact model number on the back of the printer and search for the correct replacement unit online or through an office supply retailer. Genuine Lexmark units are worth the investment because third-party units often trigger additional errors.
- Install the new imaging unit. Power off the printer and open the access door on the front or side, depending on your model. Remove the old imaging unit by pressing the blue or green release levers and sliding it straight out. Insert the new imaging unit by aligning it with the guides and sliding it in until you hear a click. Close the access door, power on the printer, and let it run its initialization cycle.
- Clear the imaging unit error after replacement. After installing the new imaging unit, the error should disappear on the next startup. If error 84 still appears, go back to the service menu and select Reset Supplies or Reset All Counters. This step ensures the printer recognizes the new imaging unit and resets its life counter to zero.
- Contact Lexmark support for remote assistance if stuck. If you cannot access the service menu or the reset does not work, call Lexmark customer support or visit their website to request remote troubleshooting. Remote assistance typically costs around $49 and a technician can walk you through advanced resets or determine whether your printer needs service. This option is worth it if you are uncomfortable opening the printer or if multiple resets have failed.
Still stuck? A technician can fix it remotely today.
Independent remote support — you watch every step, and you pay the flat $49 only after your printer is working. $0 if we can't fix it.
Frequently asked questions
Does error 84 mean my imaging unit is broken, or is it just a warning?
Error 84 is a warning that your imaging unit is nearing the end of its designed lifespan, not that it has failed completely. The imaging unit still works but will degrade in quality if you do not replace it soon. You may see poor print quality, fading, or streaks before the unit completely fails.
Can I use third-party or refurbished imaging units to avoid error 84?
Third-party and some refurbished units may trigger error 84 again or cause additional errors because Lexmark printers verify the authenticity of components. Genuine Lexmark imaging units are more expensive upfront but they are recognized by your printer and will not cause repeated errors. If budget is tight, buy genuine units from resellers or wait for sales rather than risking compatibility issues.
How often do I need to replace the imaging unit, and what does it cost?
Imaging unit lifespan varies by model but typically ranges from 60,000 to 150,000 pages. Genuine Lexmark imaging units usually cost between eighty to one hundred fifty dollars depending on your printer model. Calculating the per-page cost helps you decide whether a replacement is worth it compared to upgrading your printer.
Will resetting the error 84 counter damage my printer or void the warranty?
Resetting the counter through the service menu does not damage your printer and does not typically void your warranty. However, if you open the printer to replace parts or attempt hardware modifications, you may lose coverage. Always check your specific warranty terms, and if you are unsure, contact Lexmark support before proceeding.