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Re: VAXstation 4000/90 help

On 2010-11-27 21:45, John Klos wrote:

I am soliciting help with a problem with a VAXstation 4000/90. I got it
a while ago and I should've tested it extensively right after I got it
(so I could've returned it if it was bad), but work kept me too busy, so
I'm trying now.

When I turn it on, I get all eight LEDs on at the same time for a half a
second, then I get 7, 6, 5, 4, and 1, then nothing. I get nothing on the
serial console. If I press the halt button, the LEDs change to 7, 6, 5,
4, 3, 1, and 0. These codes aren't specifically mentioned in the DEC
Service Information manual for the 4000/90.

I tried swapping known good memory with a 4000/60 which works fine, plus
I've tried removing the video card, but nothing changed. I also put in a
brand new real time clock chip.

Does anyone know what kind of problem I might be experiencing?

The obvious first question is if you changed the switch to use a serial console, or if it is in fact talking to your graphics subsystem?


Johnny Billquist                  || "I'm on a bus
                                  ||  on a psychedelic trip
email: bqt%softjar.se@localhost             ||  Reading murder books
pdp is alive!                     ||  tryin' to stay hip" - B. Idol

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