Automatic optimization of HFSI warning thresholds based on...

Details Automatic optimization of HFSI warning thresholds based on... Automatic optimization of HFSI warning thresholds based on...

2008-06-12

2011-10-25

Chen, Sophia S (Department: 2852)

Electrophotography

Diagnostics

Service mode

C399S024000

Reexamination Certificate

active

08045865

ABSTRACT:
If the device-specific maintenance rate statistics is higher than the average maintenance rate statistics, method embodiments herein alter replacement warning thresholds for components of the device by extending the replacement warning thresholds to produce modified replacement warning thresholds. If the specific device incurs unscheduled maintenance visits more often than average, the embodiments herein extend the replacement warning thresholds for components of the device. The amount that the replacement warning thresholds are extended is different for different parts, and is based on part life, part cost, and part service cost. If the device-specific maintenance rate statistics is lower than the average maintenance rate statistics, method embodiments herein alter replacement warning thresholds for components of the device by shortening the replacement warning thresholds to produce modified replacement warning thresholds. If the specific device incurs unscheduled maintenance visits less often than average, the embodiments herein shorten the replacement warning thresholds for components of the device.

REFERENCES:
patent: 5138377 (1992-08-01), Smith et al.
patent: 6032004 (2000-02-01), Mirabella, Jr. et al.
patent: 2008/0002995 (2008-01-01), Kamisuwa et al.

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