10 Mar
2005
10 Mar
'05
7:25 p.m.
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