SEL Troubleshooting Guide

Cooling Subsystem System Event Log Troubleshooting Guide for Intel® S5500/S3420 Series Server Boards
36 Intel order number G74211-002 Revision 1.1
Table 38: Thermal Margin Sensors – Next Steps
Sensor
Number
Sensor Name
Next Steps
22h
IOH Therm Margin
1. Check for clear and unobstructed airflow into and out of the chassis.
2. Ensure the SDR is programmed and correct chassis has been selected.
3. Ensure there are no fan failures.
4. Ensure the air used to cool the system is within the thermal specifications for the system (typically below 35°C).
23h
Mem P1 Therm Margin
24h
Mem P2 Therm Margin
62h
P1 Therm Margin
Not a logged SEL event. Sensor is used for thermal management of the processor.
63h
P2 Therm Margin
5.2.3 Processor Thermal Control % Sensors
Processor Thermal Control % sensors report the percentage of the time that the processor is throttling its performance due to thermal issues. If
this is not addressed the processor could overheat and shut down the system to protect itself from damage.
Table 39: Processor Thermal Control % Sensors Typical Characteristics
Byte
Field
Description
11
Sensor Type
01h = Temperature
12
Sensor Number
See Table 41
13
Event Direction and
Event Type
[7] Event direction
0b = Assertion Event
1b = Deassertion Event
[6:0] Event Type = 01h (Threshold)
14
Event Data 1
[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 40
15
Event Data 2
Reading that triggered event.