Causes: T1LUD does not turn ON within the specified time.
Remedy: Case 1 Cause T1LUD sensor trouble. Harness connection trouble between PCU PWB, the lift-up unit, and the paper feed unit. Check and remedy Check the harness and the connector of T1LUD. Case 2 Cause Tray 1 lift-up motor trouble Check and remedy Check the lift-up unit.