Product Fault Management,
Continued
NOTE
Ownership (O-bit) memory correctable or fatal errors
(MESR <04> or MESR <03> of the Processor register
subpacket set equal to 1 are processor module errors,
NOT memory errors.
Next is an example showing the system respone to using the
SHOW ERROR command using VMS.
$ SHOW ERROR
Device
Error Count
CPU
1
MEMORY
1
PAB0:
1
PAA0:
1
PTA0:
1
RTA2:
1
$
Interpreting
Memory
Faults Using
ANALYZE/ERROR
If "memory subpacket" or "memory sbe reduction subpacket"
is listed in the third column of the FLAGS register, there is a
problem with one or more of the memory modules or CPU module.
The memory subpacket message indicates an uncorrectable
ECC error.
The memory SBE reduction subpacket message indicates
correctable ECC errors. Refer to Correctable ECC Errors for
instructions in isolating correctable ECC error problems.
NOTE
The memory fault interpretation procedures work only
if the memory modules have been properly installed
and configured. For example, memory modules should
be installed in slots 0A, 0B, 0C, 0D or 1E, 1F, 1G, 1H if
only one set of memory SIM modules are used, then
in the unused slots if a second set of SIM modules are
used. Also, if one set is made up of 4-MB SIM modules,
and the other set is made up of 16-MB SIM modules,
the front 16-MB SIM modules must be installed in SIM
module connectors 0A, 0B, 0C, 0D.
Continued on next page
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