23 Apr
2007
23 Apr
'07
5:34 p.m.
At 8:43 PM -0400 4/21/07, Brad Parker wrote:
I could swear there was a discussion recently (like in
the last week)
about 11/34 consoles and KY11 documentation. Or maybe I dreamed that
up.
I think I was one of the instigators :-) Sorry I'm late...
Anyway, it prompted me to try and figure out why my
11/34 console was
blank. The serial monitor works fine, as does the cpu, but the "digits"
in front are blank and only the run and dc-ok lights are on.
From a much earlier thread, not last week's, I had a not terribly
similar problem with mine. The power switch on the front would
seemingly turn things on/off but I had no lights. Turned out I had
-15V and +20V but no +5V. I was actually missing one of the power
regulators. Fixing that caused much joy!
[aside - I plugged one of the cables (J3) in backward
and got the display to
show all zeros', but the scan rate was *very* slow, light 10hz; I found
that interesting]
Do you mean the 20-conductor cable at J1? If it's really J3, my
comments are not applicable. IIRC, there is no J3 on the KY11-LB.
I had trouble with this cable (J1) to the M7859. (I'm using a BA11-K
box.) Shooting the lines on the cable turned up a damaged cable.
Replacing this resulted in reliable panel operation.
Good luck,
John