Konica Minolta Code 9903 -

The printer uses RAM modules (DIMMs) to process and spool image data. A single bad memory sector can trigger 9903 when the printer tries to write video data to that sector.

Sometimes a temporary glitch causes the error.

If the error returns, move to Step 2.

In technical terms, Code 9903 is a C-FA14 (or similar series) sub-code, but it is most frequently displayed simply as "9903" on the control panel or in the device's error log.

The short definition: Code 9903 indicates a "Video Data Transfer Error" or a "Memory/Controller Communication Failure." konica minolta code 9903

In plain English: The printer’s main controller board (the "brain") is trying to send image data to the print head unit (the LSU or Laser Scanning Unit), but the data is either corrupted, incomplete, or not arriving fast enough. The machine stops the print job to prevent producing a blank page or a page covered in horizontal lines.

Follow a structured approach, assuming safety and ESD precautions: The printer uses RAM modules (DIMMs) to process

  • Power cycle and isolate:
  • Remove recent changes:
  • Swap known-good modules:
  • Check power supply:
  • Firmware reflash:
  • Factory reset / initialization:

    • While 9903 can appear across the Konica Minolta range, it is most prevalent in the bizhub C-series and bizhub 4 series models. Common affected devices include:

    Older models like the bizhub C220, C280, and C360 also experience this error, though the root cause is often hardware-related, whereas newer models tie it to firmware or networking. If the error returns, move to Step 2