HP Integral / display schematic ?

[Tony Duell]

> >> The small PCB mounted on the back generates a blanking signal that was 
> >> also correct.
> >>     
> >
> > Right. It's neen a long time since I've looked at one of these displays. Is
> > this a little PCB on top of the display PCB itself?
> >   
> 
> No, it is a small PCB mounted on the plastic frame,  and it contains 5 
> TTL to calculate the framing signal from H and V sync. Should have been 
> done in the displaycontroller imho.

Now that's interesting. I am darn sure neighter of my IPCs has such a 
PCB. There are 2 unused threaded studs on the back of the display 
housing, is that where this PCB is fitted?

In my machines there's a 20 way ribbon cable that plugs into the logic B 
PCB at one end and into the display itself at the other .The logic B PCB 
(at least i nthe IPC I looked at first) is a 00095-60149 

My guess is that there are several versions of this display (rather than 
several Logic B PCB versions, since the Logic B PCB I have doesn't 
generate a blanking signal). 

Sometime (if I get time...) I'll pull my IPCs apart and note down the 
numbers on the display module. And see if I can indentify any components 
on it.

-tony