This code is formally classified as a error. Unlike a physical paper jam where a sheet is stuck in a roller, this is a sequence jam . It occurs when the machine’s internal controller fails to complete the image stabilization process before it starts a new print or copy job.
Navigate to [Service Mode] > [System 2] > [JAM Code Display Setting] and switch it to .
Unlike basic paper jams that indicate a physical obstruction, a functions primarily as a systemic timing jam. The engine controller monitors internal components at precise millisecond intervals. If a sensor fails to respond during the pre-phase startup, or if image stabilization parameters deviate from predefined factory thresholds, the controller safely aborts the sequence. Primary Root Causes konica minolta code 9903
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In the Konica Minolta error code hierarchy, is classified under the "C" series (System Control Errors). Specifically, it points to a data transfer abnormality between the main controller board and the video control board —often referred to as a "Watchdog Timer" timeout. This code is formally classified as a error
Try printing the file as an image or simplifying complex Excel spreadsheets. Maintenance Tips to Prevent Code 9903
Using an incorrect or corrupted PCL/PostScript driver on the computer sending the job. Navigate to [Service Mode] > [System 2] >
This forces the screen to show the exact timing log, helping you or a tech determine which sensor is throwing the flag. 2. Run a Manual Image Stabilization
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