Lexmark Optra C710 Service Manual - Page 129

5016-001 New Toner Cartridge Detection Service Check This symptom may require replacement of one or more customer replaceable units, designated as supplies or maintenance items, which are the responsibility of the customer. With the customer's permission, if available, try new print cartridges. A new cartridge contains a reflector attached to the new cartridge detect lever, mounted inside the cartridge. The reflector reflects light, emitted from the new cartridge detect sensor, back to the sensor, detecting the cartridge. Once the cartridge has been used, the lever moves one turn, allowing no additional reflections. FRU 1 Toner Cartridge 2 New Cartridge Detect/Toner Level Sensor Assembly Engine Board TE Cable Action Try a new cartridge. Check the sensor for signs of toner, paper dust or other contamination on the sensor. Remove contaminants which might prevent light from reaching the sensor. If the sensor is clean, replace the FRU's in the following order: 1. New cartridge detect/toner level sensor assembly 2. Engine board 3. TE cable Diagnostic Information 2-63