On 3/3/2024 6:47 AM, dee david via KRnet wrote:
Unfortunately, it is like any mechanical device. It has an MTBF(mean
time between failure)
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
In my 33+ year Service Technician career with Xerox I worked as a
liaison between the tech force and Field Engineering for 3 of those
years. Too often the accountants had as much say in the design as the
engineer. The failure rate on copiers was "failure rate per million
copies". If it was determined (guessed) that it would be cheaper to
repair after failure than to redesign up front no changes were made.
Unfortunately that cost per failure varies so much between events (
copier fails, bid proposal not completed, bid lost to competitor,
customer cancels equipment contract) that the cost of failure can not be
accurately projected. Same with engine failure on an airplane only more
potentially serious consequences, engine failed - safe landing or engine
failed - all on board killed in crash. I would claim it to be humanly
impossible to build a machine with no failure mode but anyone selling a
produce with known failure mode with unacceptable consequences and does
not attempt to eliminate those failures is negligent. Unfortunately,
most equipment failure modes are determined by customer use. You
consider the odds, pay the money, and spin the wheel................
Larry Flesner
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