HP integral : schematics / pinouts sought...

[Tony Duell]

> 
> I have current;ly on my bench an old HP Integral Unix luggable....

Lovely machine...

> 
> Doesn't boot, powersupply seems to be OK.

Does it do anything at power-on. Do you get the Thinkjet 'shuffle'? (The 
thinkjest printer has its own controller, it's really an HPIL-interfaced 
device...). If not, then maybe you've not getting the power-OK signal 
from the PSU.

FWIW, the pinout of the power connectoes to the 2 logic boards (same on 
each board, but not all pins used) is : 

  +5V --o
  +5V --o
  Gnd --o
  Gnd --o
  +12V--o 
  +15V--o 
  +18V--o
  -12V--o
  Gnd --o
PwrOK --o

> Therefore : anyone have schematics, or, more in particular, a pinout for 
> the Sharp LJ512U03c EL-display, used in the Integeral ?

Argh!!!

The HPCC scheamtics CD-ROM contaisn reverse-engineered schematics for the 
Integral, but I didn't include the display itself. It's not an HP part, 
it seemed to be all custom chips. The 2 logic boards, PSU, keyboard, etc 
_are_ included.

If you want this, yoy need to contact Dave Colver (secretary at hpcc.org).

That said,  I at least have what I think is a pinout for the 20 wire 
display cable.

        1
  Gnd --o  o-- Gnd
  V+  --o  o--  V+ (>18V)
  +5V --o  o-- Gnd
  Gnd --o  o-- Gnd
  Rst --o  o-- Gnd
VSync --o  o-- Gnd
HSync --o  o-- Gnd
Dotclk -o  o-- Gnd
DotsA --o  o-- Gnd
DotsB --o  o--Gnd

You should see some activity on the Dotclk, syncs and dots lines. Do you 
get anything on the display at all?

-tony