Fix Lexmark Error 31.40: Imaging Unit Defective

warning Severity: warning

If your Lexmark printer is displaying error 31.40, do not worry – this is a known issue with a proven fix. This error typically indicates imaging unit defective that can usually be resolved without a service call. Follow the steps below to clear this error.

What Causes Lexmark Error 31.40?

This error can be triggered by one or more of the following issues:

Imaging unit not recognized
Imaging unit chip contact failure
Imaging unit reached end of life
Incompatible imaging unit

How to Fix Lexmark Error 31.40

Follow these steps in order. After each step, check whether the error has cleared before proceeding to the next one.

Step 1: Remove and reseat the imaging unit
Step 2: Clean chip contacts on the imaging unit
Step 3: Check remaining life through the supplies status page
Step 4: Replace the imaging unit if end of life is reached
Step 5: Verify the imaging unit model matches your printer

Affected Lexmark Printer Models

The following Lexmark printer models are known to display error 31.40:

Related Lexmark Error Codes

If you are troubleshooting error 31.40, these related error codes may also be relevant:

Frequently Asked Questions

What is Lexmark error 31.40?

Error 31.40 indicates a problem with the imaging unit (photoconductor). It may not be recognized, may have dirty contacts, or may have reached end of life.

How long does a Lexmark imaging unit last?

Lexmark imaging units typically last 20,000-60,000 pages depending on the model. The supplies status page shows remaining life.

Error still not resolved?

If the steps above did not fix the error, the issue may require professional service. Contact the manufacturer support line or visit an authorized service center near you.

Lexmark Error 31.40 Fix – Imaging Unit Defective | TroubleshootMyPrinter