What are the steps to physically check the fuser connection for the '58.00 04 error'?

To physically check the fuser connection, ensure the printer is turned off and unplugged. Locate the fuser unit (refer to your manual). It's usually a modular component. Carefully check that the fuser is fully seated in its bay and that any connected cables or harnesses are securely plugged in. Look for any visible damage to the fuser or its connectors.