Support article for Lexmark T644
A 32 Unsupported Print Cartridge error message appears whenever the printer thinks the wrong toner cartridge is installed. The printer can also display this error when a cartridge that is manufactured or refilled by a third party is installed into the printer.
Confirm that the toner cartridge is correct

Open the lower and upper front covers.

Confirm that the installed toner cartridge is the correct cartridge for this printer.
| Part Number | Description |
|---|---|
| 64004H_ | T640, T642, T644 High Yield Return Program Cartridge for Label Applications |
| 64015H_ | T640, T642, T644 High Yield Return Program Print Cartridge |
| 64015S_ | T640, T642, T644 Return Program Print Cartridge |
| 64035H_ | T640, T642, T644 High Yield Print Cartridge |
| 64035S_ | T640, T642, T644 Print Cartridge |
| 64404X_ | T644 only - Extra High Yield Return Program Cartridge for Label Applications |
| 64415X_ | T644 only - Extra High Yield Return Program Print Cartridge |
| 64435X_ | T644 only - Extra High Yield Print Cartridge |
Note: "_" at the end of each part number below can be any letter. The last letter of the cartridge part number differs depending on the geographical region. For example: "A" = USA & Canada, "E" = Europe, Middle East, & Africa, "R" and "P" = Asia & Pacific Region, "L" = Latin America. The part numbers listed in the table are current as of December 2006. If you cannot find your cartridge in the table , you can contact Lexmark Technical Support to find out if your cartridge is compatible.

If the wrong toner cartridge is installed, remove it and install the correct cartridge.
Check for a refilled, incorrectly installed, or defective cartridge
If the correct toner cartridge is installed, confirm that it has not been refilled or reworked in any way. Refilling the toner cartridge can trigger this error.
If the cartridge has not been refilled or reworked in any way, it is not be seated correctly. Try reseating the toner cartridge.

Power off the printer.

Remove the toner cartridge.

Inspect the toner cartridge and the inside the printer for any obstructions or damage. Remove any obstructions you find.

Reinstall the toner cartridge. Make sure that it is seated all the way into the printer.

Close the upper front cover.

Power on the printer with the cartridge installed.
If reseating the cartridge does not clear the error message, the installed toner cartridge is broken.
Note: This is particularly likely to be the case if the error started when you installed this toner cartridge for the very first time.

Power off the printer.

If this is a brand new cartridge, install the old cartridge.
Note: If the old cartridge is unavailable or this is not a new cartridge, try installing a known working toner cartridge from another printer or another new toner cartridge, if one is available.

Power the printer back on after installing the original cartridge, or a different, but compatible cartridge.

If the Unsupported Cartridge error disappears with a second cartridge, the problem lies with the original cartridge.
Additional notes
Check the cartridge contacts
Note: An intermittent Unsupported Cartridge message is most likely caused by poor contact between the cartridge contacts and the contact board on the cartridge.
Check for a loose cable
If you cannot clear the error with another toner cartridge, a small cable inside the printer is loose. Click here for more information.
LEGACY ID: SO3691
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