Power Supply Fan Tachometer Sensors; Table 28: Power Supply Fan Tachometer Sensors Typical Characteristics - Intel S1400FP Manual

Power Subsystems
System Event Log Troubleshooting Guide for EPSD Platforms Based on Intel
4.4.5

Power Supply Fan Tachometer Sensors

The BMC polls each installed power supply using the PMBus* fan status commands to check for failure conditions for the power
supply fans.
Byte
11
12
13
14
15
16
4.4.5.1 Power Supply Fan Tachometer Sensors – Next Steps
These events only get generated in the systems with PMBus*-capable power supplies and normally when the airflow is obstructed to
the power supply:
1. Remove and then reinstall the power supply to see whether something might have temporarily caused the fan failure.
2. Swap the power supply with another one to see whether the problem stays with the location or follows the power supply.
3. Replace the power supply depending on the outcome of steps 1 and 2.
4. Ensure the latest FRUSDR update has been run and the correct chassis is detected or selected.
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Table 28: Power Supply Fan Tachometer Sensors Typical Characteristics

Field
Sensor Type 04h = Fan
Sensor Number A0h = Power Supply 1 Fan Tachometer 1
A1h = Power Supply 1 Fan Tachometer 2
A4h = Power Supply 2 Fan Tachometer 1
A5h = Power Supply 2 Fan Tachometer 2
Event Direction and [7] Event direction
Event Type
0b = Assertion Event
1b = Deassertion Event
[6:0] Event Type = 03h ("digital" Discrete)
[7:6] – 00b = Unspecified Event Data 2
Event Data 1
[5:4] – 00b = Unspecified Event Data 3
[3:0] – Event Trigger Offset = 1h = State Asserted
Event Data 2 Not used
Event Data 3 Not used
Intel order number G90620-002
Xeon Processor E5 4600/2600/2400/1600/1400 Product Families
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Description
Revision 1.1