LF: Epson HX-20 service info

[Dave Dunfield]

Hi Tony,

>> There's a little motor/gearbox to move the head, and I think a position 
>> detelction swtich. I will check the manual for you. The technical manual 
>> I have gives schematics for the cassette option, exploded views, 
>> dismantling instructions, etc.
>
>HEre's a little information on how this works.
>
> ... lots of useful info ...

Thanks! - that was very helpful.
When you said "quite a fiddle" you weren't kidding ... but on the + side,
it gets easier after about the third time...

Problem turned out to be mechanical, a combination of dirt/aging lubricants
in the mechanics which slide the head/capstan in and out, and dirty contacts
in the position detector leaf switch. After cleaning and lubricating the
mechanical parts, and cleaning and adjusting the switch (which is quite
finicy - hence the "several times" - it's more fun to take apart with a tape
stuck in it) ... the drive is working fine now, and the HX-20 is saving and
loading programs like it was new!

Thanks again & regards,
Dave
-- 
dave04a (at)    Dave Dunfield
dunfield (dot)  Firmware development services & tools: www.dunfield.com
com             Collector of vintage computing equipment:
                http://www.parse.com/~ddunfield/museum/index.html