Xerox 721P manual Door Open Errors U-XX, Thumping Noise in Standby

PROBLEM SOLVING

Door Open Errors (U-XX)

When the printer experiences a door open error, the following occurs:

￿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 also shown by PF or EXIT.

Door Open Indicator PF and Exit ErrorCodeCord

		Paper Deck				MF	Exit
		1	2	3	4	D1	PF
Wire-Clean	Exp-Clean					D2
		Select			Cut		Copy Density	Menu	Enter	Online
						D3	D4

Error Code	Cause	Treatment
U-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, confirm
		that 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, Right
		Door, Top Rear Cover, Exit Cover
U-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 Standby

After 30 minutes of no use, the printer will reset the developer motor and enter an idle state. A loud “thump” noise will be heard as the motor resets. This is normal.

46 XEROX WIDE FORMAT 721P PRINTER OPERATOR MANUAL