On 10/23/15 2:43 PM, Al Kossow wrote:
On 10/23/15 12:39 PM, Josh Dersch wrote:
I don't
suppose anyone has a service manual for these things so I know what
stuff
to probe? (Nothing on Bitsavers and a casual Google search turns up
nothing of interest.)
Service manuals/schematics/ASIC info is EXTREMELY difficult to get for
anything beyond
the stepper motor era. What is on bitsavers are the results of my
searching for
20+ years, and that isn't much. I've been digging into early 90's
DC2000 QIC drives over the
past couple weeks, and hw docs for them are just as difficult to find.
That's pretty much what I figured. I took a closer look at one of the
other dead XT2190s I have that I'd opened up to inspect awhile back and
there are a few ICs surface-mounted to the flat ribbon cable running to
the head assembly. I suppose it's likely that one of these has failed,
though actually repairing it would be a trick involving some very
careful disassembly in a very clean environment. (And a nonexistent
service manual.)
- Josh
