System Event Log Troubleshooting Guide for Intel® S5500/S3420

System Event Log Troubleshooting Guide for Intel

®

Cooling Subsystem

5.2.2 Thermal Margin Sensors

Margin sensors are also linear sensors but typically report a negative value. This is not an actual temperature, but in fact an offset to a critical temperature. Example sensors are Processor Thermal Margin, Memory Thermal Margin, and IOH Thermal margin. Values reported should be seen as number of degrees below a critical temperature for the particular component.

Table 36: Thermal Margin Sensors Typical Characteristics

Hex

Event Trigger

Description

07h Upper non-critical going high

09h Upper critical going high

Byte Field

11 Sensor Type

12 Sensor Number

13 Event Direction and

Event Type

14 Event Data 1

15 Event Data 2

16 Event Data 3

Description

01h = Temperature

See Table 38

[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 37

Reading that triggered event

Threshold value that triggered event

Table 37: Thermal Margin Sensors Event Triggers – Description

Assertion

Severity

Degraded

Deassert

Severity

OK

Description

The thermal margin has gone over its upper non-critical threshold. non-fatal Degraded The thermal margin has gone over its upper critical threshold.

Revision 1.1 Intel order number G74211-002 35