Xerox 3300MFP Service Manual - Page 102

General Troubleshooting Printing Problems (Malfunction) Defective Operation (LCD WINDOW) Display Strange characters are displayed on the Control Panel and buttons are not operated. Check and Cause Solution 1. Clear the memory. 2. Check if OPE HARNESS is connected to the Connection Board correctly. 1. Try again after clearing the memory. 2. After confirming that OPE HARNESS is connected to the Connection Board correctly, if it is so, then replace the OPE Assembly and Control Board in sequence. Defective LCD Operation Defective LCD Operation. Check and Cause Solution 1. Clear the memory. 1. The key is wrong itself or wrongly assembled. 2. Listen for a click when pressing a key on the Control Panel. 2. Even after the key has been replaced, it is still wrong, try replacing the Control Panel Assembly, then the Control Board in sequence. Fuser Gear not functioning due to melting Paper Empty The Motor breaks away from its place due to gear melting away. Check and Cause 1. Check the Heat Lamp. Solution 1. Replace the Fuser. 2. Replace the Control Board. 3. Replace the SMPS. The paper empty status on the Control Panel is displayed even when paper is loaded in the tray. Check and Cause Solution 1. Bending or deformation of the actuator 1. Replace the defective actuator. of the paper sensor. 2. Replace the Control Board. 4-10 Phaser 3300MFP Service Manual