C5360 error code on your Konica Minolta devices. This error typically indicates a clean unit fan failure when the optional Clean Unit (CU-101 or CU-202) is installed. The error occurs when the fan lock signal remains HIGH for a continuous period while the fan is operating. Possible Causes: Exhaust Fan/1 (FM14) Exhaust Fan/2 (FM15) Suction Fan (FM16) Clean Unit Drive Board (CUDB) Main Control Board (MFPB) Troubleshooting Steps: Check Fan Connections: Ensure that the connectors between the fans (FM14, FM15, FM16) and the CUDB are securely connected. Inspect Fans for Obstructions: Examine the fans for any debris or obstructions that might hinder their operation. Test Fan Operation: Perform an operation check on FM14, FM15, and FM16 to verify they are functioning correctly. Examine CUDB Connections: Verify that the connection between CUDB CN1 and MFPB CN29E is secure. Replace Defective Components: If a fan is found to be defective, replace it accordingly. If the CUDB is faulty, consider replacing it. As a last resort, if the MFPB is malfunctioning, replace it. Alternative Solution: If the Clean Unit is not essential for your operations, you can disable it: Access Service Mode: Press Utility/Counter on the control panel. Press Stop → 0 → 0 → Stop → 0 → 1 in sequence to enter Service Mode. Disable Clean Unit: Navigate to System 2 settings. On the third page, locate Clean Unit Setting. Set it to Not Installed.
