HP Xw8400 HP xw8400 Workstation - Service and Technical Reference Guide - Page 142
Redundant retry FBD, CPU Overtemp occurred.
UPC - 883585271085
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Table 5-18 POST error messages (continued) Screen Message Probable Cause Recommended Action 946-Correctable patrol data ECC error Bad DIMM or improperly installed DIMM CAUTION: Disconnect AC power from the workstation before reseating or replacing components because there is power to the system board even when the workstation is powered down. 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. 949-Correctable non-mirrored Bad DIMM or improperly installed demand data ECC error DIMM CAUTION: Disconnect AC power from the workstation before reseating or replacing components because there is power to the system board even when the workstation is powered down. 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. 950-Redundant retry FBD northbound CRC error CAUTION: Disconnect AC power from the workstation before reseating or replacing components because there is power to the system board even when the workstation is powered down. Try replacing or reseating DIMMs first, then system board. 953-Non-aliased uncorrectable patrol data ECC error Double bit ECC error due to bad DIMM or improperly installed DIMM CAUTION: Disconnect AC power from the workstation before reseating or replacing components because there is power to the system board even when the workstation is powered down. 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. 956-Non-aliased uncorrectable Bad DIMM or improperly installed non-mirrored demand data DIMM ECC error CAUTION: Disconnect AC power from the workstation before reseating or replacing components because there is power to the system board even when the workstation is powered down. 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. 960-CPU Overtemp occurred. The ambient temperature could exceed operating limits (maximum = 95° F), or there are obstructions to airflow, including dust build up. 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. 132 Chapter 5 System diagnostics and troubleshooting ENWW