Problem amtetcher SNF 2009-03-05 15:10:51: EPROM problem

eenriquez at eenriquez at
Thu Mar 5 15:10:51 PST 2009

System is under observation. It is operational now and has been stable for several hours.  Please run at your own risk.
Only recipes 1 and 2 have been programs.
System had an EPROM failure error followed by a TP7 CCCC 000 alarm.  Installed spare EPROM boards but symptoms got worse.  Replaced the battery backup board.  System has been stable now for several hours.  Reentered all systems constants, MFC config data and recipes 1 and 2.  Ran recipe several times with no problems.
If problem re-occurs, the plan is to replace individual EPROM chips.

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