Hellp! RT power up LED sez "7c"

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1 total messages Started by Steve Dyer Wed, 27 Jun 1990 16:23

#765

Author: Steve Dyer
Date: Wed, 27 Jun 1990 16:23

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My RT crashed and burned this past weekend and now on power up
it simply reports "7c" in the LEDs.  This is before any attempt
to access the floppies, so finding and running diagnostics doesn't
seem to be an option.

The cheat sheet I have reports that "7c" means "Bad APC on IOCC--fatal".
Swapping APC cards doesn't seem to have an effect.  Anyone within IBM
who might have an idea of what's wrong and how to fix it?

-- 
Steve Dyer
dyer@ursa-major.spdcc.com aka {ima,harvard,rayssd,linus,m2c}!spdcc!dyer
dyer@arktouros.mit.edu, dyer@hstbme.mit.edu

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