Uncorrectable error detected by pci0... during DVMA read transaction

hi people... at first, sorry for my english. I hava a Sun Fire 280R with Solaris 8 and today it boot aparently without a reason, it boot 5 or 6 times. The error before the fall is:

WARNING: Uncorrectable error detected by pci0 (safari id 00000000.00000008) during DVMA read transaction

panic[cpu0]/thread = 2a10001fd20: Fatal PCI UE Error

syncing file systems... 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 done (not all i/o completed)

dumping to /dev/dsk/c1t0d0s1, offset 429588480

I can not make a backup and sometimes I can not logon because it cause the boot. I have reading something of this error and I have puting the machine in diagnostic mode:

auto-boot? = false

diag-device = disk

diag-level = max

diag-switch? = true

After this, power-off and after this I have igniting the machine... I have almost one hour waiting and no notice... the screen continue black <img src="images/smiley_icons/icon_sad.gif" border=0 alt="Sad">

Can somebody help me?

THANKS! Ceci.

[1249 byte] By [ceci] at [2007-11-25 22:39:36]
# 1

I saw your other post before I saw this posting.

Probable answer is over there:

<a href="http://supportforum.sun.com/sunos/index.php?t=msg&amp;th=3946" target="_blank"> http://supportforum.sun.com/sunos/index.php?t=msg&th=394 6</a>

... Contact Sun and open a service case.

rukbat at 2007-7-5 14:12:19 > top of Java-index,Sun Hardware,Other Sun Hardware...