Cooling Subsystem 
System Event Log Troubleshooting Guide for EPSD
 
Platforms Based on Intel
®
 Xeon
®
 Processor E5 4600/2600/2400/1600/1400 Product Families 
54  Intel order number G90620-002  Revision 1.1 
7Ah = Processor 3 Thermal Control % 
7Bh = Processor 4 Thermal Control % 
Event Direction and 
Event Type 
[7] Event direction 
0b = Assertion Event 
1b = Deassertion Event 
[6:0] Event Type = 01h (Threshold) 
[7:6] – 01b = Trigger reading in Event Data 2 
[5:4] – 01b = Trigger threshold in Event Data 3 
[3:0] – Event Triggers as described in Table 42 
Reading that triggered event 
Threshold value that triggered event 
Table 42: Processor Thermal Control Sensors Event Triggers – Description 
Upper non-critical 
going high 
The thermal margin has gone over its upper non-critical threshold. 
Upper critical 
going high 
The thermal margin has gone over its upper critical threshold. 
5.2.3.1  Processor Thermal Control % Sensors – Next Steps 
These events normally occur due to failures of the thermal solution: 
1.  Verify heatsink is properly attached and has thermal grease. 
2.  If the system has a heatsink fan, ensure the fan is spinning. 
3.  Check all system fans are operating properly. 
4.  Check that the air used to cool the system is within limits (typically 35°C).