The paralegal used a generic HP printer driver mapped to the Konica Minolta via a print server. The driver was sending compressed JPEG data the Konica could not decode.
Turn off the main power switch (usually located inside the front cover or on the side of the machine). Unplug the power cable from the wall outlet. konica minolta code 9903
Before conducting deep troubleshooting, try to clear the code with a reboot: Turn off the main power switch. Wait at least 30–60 seconds. The paralegal used a generic HP printer driver
: Review the level history for IDC sensors 1 and 2 in service mode to see if they are reading within normal parameters. Unplug the power cable from the wall outlet
Often, an error is triggered by a temporary glitch. A full reset is the first and most important step. You should always restart the machine using the main power switch, not just the power-saver button, which may not clear the error memory.
Turn the machine back on.If the error returns, proceed to the next steps. 2. Check for Imaging Unit Failures (Most Common)
Running older firmware versions (older than G00-RF) can cause stability issues.