公开(公告)号：GB2494536A

公开(公告)日：2013-03-13

申请号：GB201215999

申请日：2012-09-07

Applicant: XEROX CORP

Inventor： GEARING MARK ,  ABBOTT STEPHEN J ,  MONAHAN LEE

IPC: G07C3/00

Abstract: A computer implemented method for determining the end of life condition for a replaceable unit (such as an automatic handler roll, a fuser module or a paper feed roll), associated with a multifunction device, comprising a counter associated with the multifunction device maintaining a running count of operations for the unit. Once the number of performed operations of the replaceable unit reaches a given percentage of the expected life of that unit (218), an analysis is performed on a running history of the fault codes. Once the number of fault codes attributable to any given replaceable unit meets or exceeds a predetermined level, such as a percentage of the running history, a notification is generated indicating a need to replace the replaceable unit.