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Lexmark CX310

Lexmark CX310

900.55 Firmware Errors on the Lexmark X792


hat you will see

Intermittent 900.55 errors with this secondary crash information:

1626 P4Notify 0029-0150 page4/pth/mbox.c-205: Mailboxes out of messages. The worst offender is 0x103a4ef0 with 500 messages. @PANEL 900.55 Firmware Error

Affected products

This issue was first seen on the X792 MFP; however, MFPs with similar firmware architecture may exhibit this issue.

Suggested remedy

A PE-released version of firmware .P522, or greater, may be available that addresses the issue described above. Please contact Lexmark Technical Support and reference this article ID#SO7877 to inquire about obtaining this firmware.

You may be asked to escalate this issue to verify both causation and your printer's configuration settings.

Still need help?

If you need additional assistance, please close this window, go to your product's support page and locate

Get In Touch with Lexmark! for contact information.

When calling for support, you will need to provide your printer model/machine type and serial number (SN). Please be near the products described in this article to expedite the support process and reduce call-back situations.


Audience: Lexmark and Support Partners

Additional information

See xref_TE363_xref to check for firmware availability; otherwise, contact your next level of support to obtain this firmware.


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