DOS HOSPITALITY (serv.man7). Frequnetly Asked Questions (May 2005) - Sharp EPOS FAQ (repair manual). Page 9

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Startup 
Startup 
Errors
Errors
UP-??? Frequently Asked Questions
UP-??? Frequently Asked Questions
“Update failed 14080” appears when signing on
with clerk you can the clear the error but it
appears again at sign on.
The problem occurs generally
after deleting the RTU and UPINST folders,
however when you delete the files from here you
must ensure that there is no customer operation,
taking place.
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