Sharp PC-1211

[Tony Duell]

> Obviously, something is "not quite right".  I'll pull them
> apart and see if there's anything "obvious".  (maybe fresh batteries
> "just in case"...)

There's some problem that the original cells in the computer were 1.35V 
mercury cells. The replacements (alkaline cells) are closer to 1.5V. I 
know some (all?) PC1211s do odd things if given 4 alkaline cells. A 
silicon diode in series with one of the battery conenctions generally 
fixes that.

IIRC, one of th TRS-80 sites (http://www.trs80.org/ ???) has a service 
manual for the PC1 which is essentially the same machine as the Sharp 
PC1211. I don't rememebr seeing a service manual for the printer, though.

-tony