Schedule monthly administrative restarts of both the physical printer and the hosting print servers to clear out accumulated network handshake logs.
If structural electrical hardware, such as the main controller board or sensor wiring harnesses, requires continuity testing or replacement.
The 9903 error can be triggered by several underlying issues, ranging from simple user error to more serious hardware failures. The most common causes are:
Based on field service manuals and real-world technician reports, C-9903 rarely has a single cause. Below are the five most common triggers, ranked from most to least likely. konica minolta code 9903
The solution is straightforward and does require a service call in most cases:
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Code 9903 indicates a "Video Data Transfer Error" or a "Memory/Controller Communication Failure." The most common causes are: Based on field
If the error only occurs during specific print jobs, try the following:
: Dirty or deformed rollers, guides, or faulty actuators in the paper path. Recommended Troubleshooting Steps
Manually runs stabilization to clear pre-phase startup locks. Print Driver / Firmware Upgrades system to address known data-processing errors. When to Call an Authorized Service Technician Code 9903 indicates a "Video Data Transfer Error"
Remember: The "C" in C-9903 means . Treat it accordingly.
Inside the machine, a flexible flat cable (FFC) connects the MFP board to the video board. Over time, due to heat and vibration, this cable can work loose. Even a 1mm misalignment disrupts high-speed video data transfer.
Printing large or complex files (like MS Excel sheets with variable data and multiple worksheets) can sometimes overwhelm the processor, leading to timing errors.
: Turn the main power switch OFF , wait at least 10 seconds, and turn it back ON to clear temporary controller glitches. Run Manual Image Stabilization : Access the Service Mode or Utility menu.