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.
Konica Minolta releases frequent firmware updates to fix timing bugs. If you recently upgraded firmware on the MFP board but not the video board (or vice versa), version mismatch can cause C-9903. Also, a sudden power loss during firmware write can corrupt the video control logic. konica minolta code 9903
If all else fails—the error appears on copy jobs, memory tests pass, firmware is current, and you’ve swapped DIMMs—the MFP Board (p/n A5C7H02300 for the C224e series) is likely failing. The printer uses RAM modules (DIMMs) to process