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HP Xw8400 - Workstation - 4 GB RAM User Manual Page 140

Hp xw8400 service and technical reference guide.
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Table 5-18
POST error messages (continued)
Screen Message
931–Northbound CRC error on
non-redundant retry
932–Alert on non-redundant
retry
945-FBD northbound CRC
error
946-Correctable patrol data
ECC error
949-Correctable non-mirrored
demand data ECC error
950-Redundant retry FBD
northbound CRC error
953-Non-aliased uncorrectable
patrol data ECC error
956-Non-aliased uncorrectable
non-mirrored demand data
ECC error
960–CPU Overtemp occurred.
961-Uncorrectable data ECC
on replay error
1151–Serial Port 1 Address
Conflict Detected.
130
Chapter 5 System diagnostics and troubleshooting
Probable Cause
CRC error occurred. This could be due
to a faulty system board, memory, or
BIOS issue.
Alert present on retry.
Bad DIMM or improperly installed
DIMM
Bad DIMM or improperly installed
DIMM
Double bit ECC error due to bad DIMM
or improperly installed DIMM
Bad DIMM or improperly installed
DIMM
The ambient temperature could
exceed operating limits (maximum =
95° F), or there are obstructions to
airflow, including dust build up.
Bad DIMM or improperly installed
DIMM
Both external and internal serial ports
are assigned to COM1.
Recommended Action
Try replacing or reseating DIMMs first, then system
board.
Try replacing or reseating DIMMs first, then system
board.
Try replacing or reseating DIMMs first, then system
board.
Try reseating the DIMMs and make sure that they are
inserted correctly. If the problem persists, remove or
replace the DIMMs one by one until the problem DIMM
is isolated.
Try reseating the DIMMs and make sure that they are
inserted correctly. If the problem persists, remove or
replace the DIMMs one by one until the problem DIMM
is isolated.
Try replacing or reseating DIMMs first, then system
board.
Try reseating the DIMMs and make sure that they are
inserted correctly. If the problem persists, remove or
replace the DIMMs one by one until the problem DIMM
is isolated.
Try reseating the DIMMs and make sure that they are
inserted correctly. If the problem persists, remove or
replace the DIMMs one by one until the issue is
resolved.
1.
Be sure you are not operating the system in an
environment that exceeds 95° F.
2.
Disconnect power and open the access panel.
3.
Check that cables are not blocking CPU heatsink
fans or front fan, if installed.
4.
Check that there is not excessive dust on major
components.
5.
If airflow is acceptable and there is not excessive
dust, the thermal sensing circuitry has failed on the
processors or on the system board. You must
replace the processors, the system board, or both.
Try reseating the DIMMs and make sure that they are
inserted correctly. If the problem persists, remove or
replace the DIMMs one by one until the problem DIMM
is isolated.
1.
Remove any COM port expansion cards.
2.
Clear CMOS.
3.
Reconfigure card resources and run Computer
Setup (F10 Setup).
4.
Run Computer Setup or Windows utilities.
ENWW

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