29 Apr
2014
29 Apr
'14
10:40 a.m.
Many thanks to _Bernhard Wulf_, who found Overland OD32XX tape drive
info and software at this extremely helpful link:
http://www.pestingers.net/antique_computer_Gallery.htm
From the User Manual, my unit appears to have a Critical Error (alert
flashing 4x per second). This error translates into error 60, "Bad
NOVROM magic" -- whatever that means (see page 41 of manual). This
error if I understand it correctly makes sense, as I removed the button
cell battery off the main PCB to replace it. Anything backed up by that
battery would've been lost, so seemingly, the NOVROM contents were lost.
Very sadly, the recommended service procedure for this fault code is "RC
1" -- Call a Service Tech to replace Main PWB.
Insane that a battery replacement would render a perfectly good PWB useless.
- John S.
29 Apr
29 Apr
12:17 p.m.
On 04/29/2014 10:40 AM, js at cimmeri.com wrote:
Insane that a battery replacement would render a
perfectly good PWB
useless.
Thanks for the information--my 3210 can stay at the bottom of the pile
now. :)
--Chuck
2:14 p.m.
Many thanks to _Bernhard Wulf_, who found Overland OD32XX tape drive
info and software at this extremely helpful link:
http://www.pestingers.net/antique_computer_Gallery.htm
From the User Manual, my unit appears to have a Critical Error (alert
flashing 4x per second). This error translates into error 60, "Bad
NOVROM magic" -- whatever that means (see page 41 of manual). This
It may mean there should be some 'magic number' in some location(s) of
the non-volatile memroy so that it's recognised as a valve NVRAM. ARGH!.
There must have been a way that this was written at the factory. If the
battery is a smparate components (taht is, it's not sne of those Dallas
modules or similar) then presumably the RAM was written while fitted to
that PCB.
But Chuck (I think) mentioned that the firmware ROM was socketed. It's
possible there was a special ROM sued at hte factory to intialise the
NVRAM. I've seen that...
error if I understand it correctly makes sense, as I
removed the button
cell battery off the main PCB to replace it. Anything backed up by that
battery would've been lost, so seemingly, the NOVROM contents were lost.
Wht is the NVRAM used for? Sicne swappign the main PCB was posisble, it
seems unlikely that the NVRAM contains parameters relating to the
mechanical side (such as valuss to set mtoro speeds for the particular
motors in your uni). So perhapce jsut gettig nthe right magic numbers
into the NVRAM would get it going again. Perhaps trace the approporaite
bit of the firmware to see what it is expecting...
-tony
3660
days inactive
3660
days old
2 comments
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participants (3)
-
ard＠p850ug1.demon.co.uk -
cclist＠sydex.com -
js＠cimmeri.com