10 Jan
2011
10 Jan
'11
10:39 a.m.
2011-01-09 18:48, Richard skrev:
I am wondering just how youy make a PCB where you can't replace the
flyback transformer....
In any case, that can't be the difference with the 2 models of VT240.
That terminal doens't have a built-in CRT. It uses either a VR201
(monochrome) or VR241 (colour) monitor, which is a separate unit.
Sometimes DEC suffix letters indicate the mains voltage the unit was
designed for (some PSUs came in seaprate 115V or 230V models). But I
thought all VT240s werr switchable.
There is an internal option connecotr, I believe for a modem PCB. Perhaps
the differenec is that one ahs the modem fitted as standard.
-tony
What's the difference?
I'm not sure about the 240. But the 220 comes in two revisions and the
difference was on the power circuit board. On one revision you could
replace the flyback, on the other version you had to replace the whole
circuit board (with flyback). This was described in the pocket service
guide I got from vt100.net