2 Jul
2004
2 Jul
'04
11:33 a.m.
Dan Kolb <dankolb(a)ox.compsoc.net> wrote:
I decided to power on my MicroVAX 3800, after it's
been idling for a couple of
years (unfortunately due to lack of time on my part), only to find that it's
not booting properly. The LED display on the cover/patch panel sits saying 'F'
(apparently "Waiting for CDOK"); nothing else happens. Anyone got any ideas as
to what may be wrong, or if it's fixable?
First of all, it's DCOK, not "CDOK". Second, the problem may not be in
the CPU board, it may be the PSU. E.g., it's out of tolerance and does
not assert the DCOK signal. Follow Tony's advice: check the PSU voltages
and the state of the DCOK signal before randomly swapping parts (and
certainly before rushing out to eBay to buy a new KA655 board).
MS