: Dirty or deformed rollers, guides, or faulty actuators in the paper path. Recommended Troubleshooting Steps
No. The hard drive stores spool data and address books. Code 9903 is unrelated to HDD. Do not waste money on HDD replacement for this error.
While the exact location can vary by model, this code is most frequently associated with the or the Automatic Document Feeder (ADF) .
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for IDC sensors 1 and 2 to look for underlying image stabilization issues. manual image stabilization and check for any "P" codes (warning codes). Inspect the
is a serious signal that your printer’s video pipeline is failing. While a simple reboot works in 10% of cases, the majority require hardware intervention—most often faulty memory on the video board or outdated/corrupted firmware.
Open the front door or locate the side panel and turn off the . Unplug the power cord from the wall outlet. : Dirty or deformed rollers, guides, or faulty
This error is often displayed as "99-03" on the control panel. Older documentation may also refer to it simply as "9903".
If the above steps do not work, it might be a hardware connection issue.
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. Code 9903 is unrelated to HDD
Outdated firmware often misinterprets minor image processing delays as fatal controller errors. Ensure your machine is flashed to the latest production firmware version (e.g., version or newer for i-Series models). Firmware updates resolve known buffer overflow bugs and relax strict sensor timing tolerances that trigger false 99-03 jams. 4. Swap Print Drivers
You need a formatted USB drive with the latest firmware (download from Konica Minolta’s authorized portal).
Ensure your device is running the latest firmware (G00-RF or newer is often recommended). Additionally, verify that you are using the on your computer, as mismatched drivers can send unreadable commands to the controller. 4. Inspect Data and Storage
To prevent error code 9903 from recurring, implement these best practices: