PROBLEM SOLVING46 XEROX WIDE FORMAT 721P PRINTER OPERATOR MANUALDoor Open Errors (U-XX)When the printer experiences a door open error, the followingoccurs:• The Door Open Indicator flashes orange.• An error code “U-XX” flashes.• For codes U-04 or U-14, the location of the open door is alsoshown by PF or EXIT.Error Code Cause TreatmentU-01 The Upper Drawer is open. Open and close the Upper Drawer.U-02 The Middle Drawer is open. Open and close the Middle Drawer.U-03 The Lower Drawer is open. Open and close the Lower Drawer.U-04 The Inner Transport is open. Close the Inner Transport.Note: When you turn the latch, confirmthat it is locked.U-06 Left Door is open. Close the Left Door.U-11 Manual Bypass Shelf is open. Open and close the Manual Bypass Shelf.U 10 A interlock is open. Reset the Manual Bypass Shelf, RightDoor, Top Rear Cover, Exit CoverU-12 Right Door is open. Close the Right Side Door.U-13 Top Rear Cover is open. Close the Top Rear Cover.U-14 Exit Cover is open. Close the Exit Cover.Thumping Noise in StandbyAfter 30 minutes of no use, the printer will reset the developermotor and enter an idle state. A loud “thump” noise will be heardas the motor resets. This is normal.Exp-CleanWire-CleanPaper Deck1 2 3 4Select CutMFD1D2D3 D4PFExitCopy Density Menu Enter OnlineDoor Open Indicator PF and Exit Error CordError Code