[comp.sys.mac.misc] Sad Mac Error Code

rudoff@MDI.COM (Doug Rudoff) (05/22/91)

I started up my Mac SE the other day and got a sad mac with this numbers:
00000004
0000FF00

What does it mean?

Recently, I upgraded to 4 meg. The problems are intermittent. I turned
off the Mac after I got the sad mac and it booted fine. Occasionally,
the mouse cursor locks up and I have to reboot.

Thanks

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Doug RUDOFF    Motorola Mobile Data    Bothell, WA    uunet!mdisea!rudoff
(206) 487-5937                                             rudoff@mdi.com
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russotto@eng.umd.edu (Matthew T. Russotto) (05/22/91)

In article <1991May21.172043.2255@MDI.COM> rudoff@MDI.COM (Doug Rudoff) writes:
>
>I started up my Mac SE the other day and got a sad mac with this numbers:
>00000004
>0000FF00
>
>What does it mean?
>
>Recently, I upgraded to 4 meg. The problems are intermittent. I turned
>off the Mac after I got the sad mac and it booted fine. Occasionally,
>the mouse cursor locks up and I have to reboot.

An entire SIMM is checking out bad.  (bits set correspond to bad bits.  8 bits
are set, 8 chips are bad).  It is the second SIMM in Bank 1.  Seems more likely
to be a bad installation or maybe a damaged SIMM board than 8 bad chips.
--
Matthew T. Russotto	russotto@eng.umd.edu	russotto@wam.umd.edu
     .sig under construction, like the rest of this campus.

kanala@sc2a.unige.ch (05/22/91)

In article <1991May21.172043.2255@MDI.COM>, rudoff@MDI.COM (Doug Rudoff) writes:
> 
> I started up my Mac SE the other day and got a sad mac with this numbers:
> 00000004
> 0000FF00
> 
> What does it mean?

Sad Mac code 0004 means RAM test failed in bank A, the second number is the
bite that failed. Guess your SIMMs are defective. If the second number 
varies, it's worse, but if not, replacing the defective SIMM should help.

Roman Kanala, CUEPE, University of Geneva, Switzerland, kanala@sc2a.unige.ch