On Nov 24, 21:03, ajp166 wrote:
> From: Pete Turnbull <pete_at_dunnington.u-net.com>
> >The front bezel (frame round the panel) has been repainted white, and
> the
> >paint has flaked or chipped off in places, to reveal a chipped coat of
> >beige paint. I'd like to refinish and respray it. What's the correct
> >colour?
>
> DEC gray #68 A color close to eggshell toward very light gray.
Sounds like a very pale grey, not quite white? A lot lighter than the
panel on, say, an 11/34, or an 11/03? I'll see what I can find. Thanks!
> >I'm toying with the idea of replacing the LEDs with bi-pin bulbs, as the
> >panel was originally a bulb panel. The resistors for the warm-up
> current
> >have been clipped out. What value should they be?
>
> leave the leds, likely that mod was done very long ago. The lamps
> tended to die too often.
Yes, I'm sure it was done a long time ago, possibly even when the machine
was new. Judging from the date codes on ICs and dates on some boards, it
was made in early 1974.
> >What's J5 (3-pin Mate-N-Lok) on the PSU for?
>
> Power controller.
Are you thinking of the ones on the back (on the outside)? This one is
inside, near the front, and I think Tony's suggestion (for the power fail)
is right.
> >Lastly (for now :-)), which direction should the fans blow?
> Unknown on direction, I think "out". Filter was a layer of foam where
> there
> was one. I have a an 8f so they are somewhat different but the fans blow
> in
> across the cards. The PS in the reaw with its own fan. The 8e has the
> power supply down the left side(facing the front from front) and thefrom
> right
> (input) to left (out through the PS). The power supply will tolerate
> higher temps
> if memory serves than core. Keeping the core cool and at a relatively
> constant temp was the key to stable ops.
In that case, I exercise my right to change my mind, and I think they
probably are the right way round. The air blown out of the PSU isn't very
warm, but it will presumably be warmer when I put lots of cards in and give
it more of a load.
At some point, I would like to try to get the original core working (it
wasn't when I got it). Expect more questions, about debugging 8K core
stacks, since I don't have a printset!
--
Pete Peter Turnbull
Network Manager
University of York
Received on Sun Nov 25 2001 - 04:57:08 GMT