900.00XM1246

Lexmark XM1246 error 900.00: Firmware Fix

The Lexmark XM1246 error 900.00 is a critical firmware exception indicating that the printer's internal controller has encountered an unrecoverable state. This error usually manifests as a frozen panel. Identifying if this is caused by a specific print job or a general system failure is crucial.

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Common causes

  • 1Firmware crash: Logic error during boot.
  • 2Data corruption: Bad print stream packet.
  • 3Memory failure: RAM module malfunction.
  • 4System board failure: CPU hardware defect.

Solutions

Quick Diagnosis

If the device stops at 900.00 during boot or job processing, the firmware logic has likely crashed.

Step-by-step Solution

  1. Disconnect all network and USB data cables.
  2. Perform a hard power cycle by pulling the plug for 60 seconds.
  3. Power on the device; if it reaches the Home screen, the issue may have been a bad packet.
  4. Apply the latest firmware update available from Lexmark to prevent recurrence.

Prevention and Maintenance

Keep the printer on a stable surge-protected outlet and update firmware annually.

When to call a technician

If the error persists after a hard power cycle and firmware flash, the internal mainboard (controller board) is likely faulty.

Device Technical Specs

  • Technology: Monochrome Laser
  • Speed: 46 ppm
  • Connectivity: Gigabit Ethernet / USB 2.0
  • Consumable: 24B Series Toner
  • Official drivers / firmware

Frequently asked questions

The 900.00 code represents a general firmware exception where the printer’s CPU can no longer process tasks.

Not necessarily; it often needs a clear memory reset or firmware reflash to recover.

It utilizes the 24B series toner cartridges for optimal output.

Avoid sending excessively large PDF files and keep the machine firmware updated.