3 Jan
2010
3 Jan
'10
2:59 p.m.
On the net there is also mentioned that Epson made the
displays.
Well, I can't find a maker's name on the actual display, but the PCB and
many of the chips (including those on the flexiprints going to the
display glass) say 'Sharp' on them.
So may be, there where two or more suppliers for the
displays ..
I guess there were. Given that the module i have connects directly to the
Logic B PCB, I guess that is the one the machine was designed to use. If
the Epson display needs the interface PCB to provide the blanking signal,
etc, it would suggest that it was hacked in for some reason.
It would be interesting to know the serial numbers of machines with each
type of display. Was it that the Epson display was used in early machines
(implying the Sharp one wasn't available in time, so they had to do the
kludge to have working machines), or was it that the Epson display was
used in late machines (possibly the Sharp display was discontinued and
they had to find a replacement) or what?
I'll check mine this week and will put some
pictures online.
If necessary I can take mine apart again and photograph it...
I think you should look at these patents :
US4707692, US4642524 and USD322603(this one is a design patent but
interesting)
Will do.
-tony