Monitoring window expansion for diagnostics
AssigneeXerox Corporation
InventorFrank R. Walsh
Life of this patent
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Abstract
A technique for expanding the control windows or time periods between sensors in a real time machine for diagnostics. In particular, upon indication of a malfunction of the travel of a sheet between sensors, a Service Representative is able to place the machine in a diagnostic mode and expand the time period or window for determining more precisely the degree of deviation of the errant time period from the standard range.
Claims5
A method of sheet feeder diagnostics in a reproduction machine having a control means and a sheet feeder for advancing sheets in seriatim along a sheet path, said sheet path having a sensor for sensing movement of the sheets in said path, said control means including a memory and display for manifesting machine faults and having a logic means providing a first control window time frame for monitoring the movement of the sheets along the sheet path comprising the steps of:
- manifesting a plurality of machine faults in said reproduction machine relating to the movement of the sheets along the sheet path,
- putting the machine in a diagnostics mode in response to the manifestation of the plurality of machine faults,
- providing a second control window time frame for diagnosing the movement of the sheets along the sheet path, the length of time of the second window being greater than the length of time of the first window,
- exercising the machine components related to the movement of the sheets along the sheet path, and
- determining the cause of the faults in the machine based upon the monitoring of the sheets during the second window time frame.
A method of diagnostics in a reproduction machine having a control means and a sensor for sensing machine operation, said control means including a memory and display for manifesting machine faults and having a logic means providing a first control window time frame for monitoring said machine operation comprising the steps of:
- manifesting a plurality of machine faults in said reproduction machine relating to said machine operation,
- putting the machine in a diagnostics mode in response to the manifestation of the plurality of machine faults.
- providing a second control window time frame for diagnosing said machine operation, the length of time of the second window being greater than the length of time of the first window, and
- determining the cause of the faults in the machine based upon the monitoring of said machine operation during the second window time frame.
Dependencies are inferred from the claim text.