34Getting To Know Your MachineOperation ChartQ Problem Solving User Error Codes (U Code) Jam Error Codes (J Code)NOTE 1. The J## Code indicates the most probable Jam location. If the jam message reappear afterthe jam is cleared, paper is most likely jammed at other location(s). Check the Jam ErrorCodes Table above for other check points and remove all misfed paper.2. Make sure that the Jam Error Code disappears after removing the misfed paper.3. The Jam Error Code will not disappear if the paper is still jammed in the machine. Check againand remove all misfed paper.Code Check Points Code Check PointsU01 Front Cover is open. U20 ADF Cover is open.U13 Low Toner or Out of Toner. (See page 30) U90 Battery requires replacement. (See page 141)U16 Toner Cartridge is not installed correctly.Code Check Points Code Check PointsJ00 Remove paper from the Sheet Bypass. J71,J72,J74,Remove misfed paper(s) in the ADF.(See page 32)J01,J02Pull out the paper tray(s) and remove thejammed paper from the tray(s).Check to make sure the Paper Guides areproperly adjusted in the tray(s). (See page 32)J75,J92,J93J43,J44,J80,J82,J83Remove misfed paper(s) inside the machine.(See page 32)U20U90U01U13U16