12 Jun
2008
12 Jun
'08
7:39 p.m.
Hello Everybody,
My HP 85 starts up with "Error 23 SELF TEST"
but seems to work. Does anybody know how
to get it to be more specific about what
isn't working correctly? thanks, -kurt
I've looked in the HP85 service manual, but it's not a lot of help. That
manual doesn't document the self-test errors, rather it assumes you have
a 'Service ROM' which you put in the ROM drawer, and which contains more
extensive tests.
I guess that if the machine 'seems to work', the problem is with some
part you're not using. Have you tried the printer and tape drive, for
example? Do you have any add-on ROMs or interfaces installed (if so, pull
them out nad try again). Is it possible that some part of the main ROM
has failed so that some obscure function doesn't work properly?
-tony