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Lexmark X950

Lexmark X950

901.00 Service Engine Message Appears on the Lexmark C950 an X95x Series Printers and MFP

What you will


A 901.00 Service Engine displays upon entering the Diagnostic Menu to test or implement countermeasures that may address an initial service error; for example, 133.xx or 121.xx errors.


Firmware LHS42.TQ(P).P538, or greater, is known to address this issue. Contact Lexmark Technical Support andreference this article ID# SO7939 when you request this firmware.

Firmware updates require the printer be in a Ready state; therefore, any existing printer error will prevent a successful firmware update. Hence, you will have to force the printer into an xref_HO3505_xref state to allow the printer to accept the firmware flash file.

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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.


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