Apple Server Diagnostics - Manual (Page 49)

Appendix Server Diagnostics Test Reference 49
Sensor Tests
When Server Diagnostics EFI starts, it performs a hardware existence test. All sensors
found during this test can be tested individually using sensor tests.
Test Estimated completion time Description
Sensor Reads 1 second Verifies that the sensor reads are
within the preset sensor limits.
SMC PID Sensor Tests
The System Management Controller (SMC) monitors the Proportional Integral
Derivative (PID) controller which controls several important temperature sensors.
Test Estimated completion time Description
SMC PID Sensor 1 second Verifies that the sensor reads
controlled by the PID are within
the preset sensor limits.
USB Tests
Connect USB devices before running USB tests.
Test Estimated completion time Description
Presence 1 second Verifies that a USB device is
connected.
Video Controller Tests
The availability of video controller tests depends on the video controller installed in
the server.
Test Estimated completion time Description
PCI-E 8 LinkWidth Verification 1 second Verifies PCI link width is 8.
Framebuffer Address as Data 2 minutes Tests the framebuffer using
framebuffer addresses as data.