Minor (I hope!) Crisis - E450 will not power up Post: 302452128

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Operating Systems Solaris Minor (I hope!) Crisis - E450 will not power up Post 302452128 by Dr Lou on Thursday 9th of September 2010 10:32:37 AM

09-09-2010

Registered User

Minor (I hope!) Crisis - E450 will not power up

UNIX Friends,

Came in this morning to a downed E450 - thought it had been a power disaster. But wasn't! Machine had apparently shut itself down.

All three power supplies are double-green, and case interlock switch is closed...

As this is the first time we've had such a catastrophic(?) failure, am now taking the approach of removing components (with a bit of vacuum cleaning), and replacing one by one to see if one is defective. With CPUs, DC modules and memory removed, no combination of key position, power switch, etc. gets us back to the boot prompt. Having never tried this before, is this expected behavior?

Qs:
Is this diagnostic approach reasonable?
Will the machine get through its POST, and to a boot prompt, with no CPUs, no DC power modules, or memory?
If not, what is the minimum component content for the machine to power up?
Are there Best Practices Strategies for performing these (failed component) diagnostics?
Yes, with the machine up, in the past, a check of the log would reveal drive problems, overheating problems, etc.
But, with no Boot Prompt available, what's a lowly SysAdmin to do?

Many thanks for your wisdom and insights.

L

Last edited by Dr Lou; 09-09-2010 at 11:45 AM..

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ppmdither

ppmdither(1)						      General Commands Manual						      ppmdither(1)

NAME

       ppmdither - ordered dither for color images

SYNOPSIS

       ppmdither [-dim power] [-red shades] [-green shades] [-blue shades] [ppmfile]

DESCRIPTION

       Reads  a  portable  pixmap as input, and applies dithering to it to reduce the number of colors used down to the specified number of shades
       for each primary.  The default number of shades is red=5, green=9, blue=5, for a total of 225 colors.  To convert the image to a binary rgb
       format suitable for color printers, use -red 2 -green 2 -blue 2.

OPTIONS

       -dim power    The  size of the dithering matrix.  The dithering matrix is a square whose dimension is a power of 2.  power is that power of
		     2.  The default is 4, for a 16 by 16 matrix.

       -red shades   The number of red shades to be used, including black; minimum of 2.

       -green shades The number of green shades to be used, including black; minimum of 2.

       -blue shades  The number of blue shades to be used, including black; minimum of 2.

SEE ALSO

       pnmdepth(1), ppmquant(1), ppm(5)

AUTHOR

       Copyright (C) 1991 by Christos Zoulas.

								   14 July 1991 						      ppmdither(1)