Lexmark C2335/CS531/CS632/CS639 printer platform — 31.64
Lexmark 31.64 means the color imaging kit is not installed or seated correctly. The guidance here is specific to C2335/CS531/CS632/CS639 printer platform and the Color imaging kit operation.
Error meaning
The color imaging kit is not installed or seated correctly.
This interpretation is tied to the reviewed family/platform and subsystem. Do not reuse the code by itself on another printer family.
Applies to
C2335/CS531/CS632/CS639 printer platform
- C2335
- CS531
- CS632
- CS639
Common formatting
These are lookup/formatting aliases for this reviewed condition, not separate pages.
- 31.64
What usually causes it
- The color imaging kit is missing or not seated correctly. Unlike 31.60, this condition concerns the shared color-imaging assembly rather than the black imaging unit, so the replacement path and affected component are different.
- The exact condition recorded for this code is: The color imaging kit is not installed or seated correctly.
- Use the normal color-imaging-kit access procedure to confirm the kit is present, aligned with its guides, and fully installed. Check only for obvious shipping locks or packaging identified by the guide.
What to try
Check the condition this code actually names
Reseat the color imaging kit using the documented user-access procedure.
Isolate the affected part of the workflow
Use the normal color-imaging-kit access procedure to confirm the kit is present, aligned with its guides, and fully installed. Check only for obvious shipping locks or packaging identified by the guide.
Run a controlled confirmation test
After reinstalling the kit, print a simple color page and see whether 31.64 returns. A successful color test indicates the kit is being recognized again.
After each corrective action
Retry the original operation that produced 31.64. If it works, stop there rather than moving into unrelated troubleshooting.
If the code returns
If 31.64 began immediately after a color imaging kit replacement, verify the kit part compatibility and installation sequence before assuming a controller failure.
When service may be needed
Do not disassemble the imaging kit or touch its sensitive surfaces unnecessarily. Persistent recognition failure with a correct seated kit should be escalated.
Continue with guided troubleshooting
If the printer still is not working after the reviewed checks, carry this verified error context into the guided troubleshooter.
Related information
Verified source
Official four-model User’s Guide (2026 edition) contains the printer error-code section and safety cautions.