Oracle Sun Fire X4240, Service Manual

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4-48 Sun Fire X4240 Server Service Manual • September 2010
4.11 Using the Reset and NMI Switches
Caution –
Do not use the Reset and NMI Dump switches unless you are instructed
to do so by a Field Service engineer.
4.11.1 Reset Switch
The Reset switch on the motherboard sends a reset order to the processors, resetting
the main system, but not the service processor. The button for this switch is one of
the 3 hidden (recessed) buttons on the back of the motherboard located between the
NET MGT and NET0 connectors and closest to NET0. It can be pushed by sticking a
paper clip or similar object through the hole provided on the rear of the chassis.
4.11.2 NMI Dump Switch
The NMI button is the center button of the row of 3 hidden (recessed) buttons on the
back of the motherboard located between the NET MGT and NET0 connectors. The
button for this switch can be pushed by sticking a paper clip or similar object
through the hole provided on the rear of the chassis.
The Non-Maskable Interrupt (NMI) Dump switch sends an NMI order to the
processors, which is used by Field Service for debugging activities at the request of
operating system engineers. NMI can also be asserted by ILOM. Refer to the
Sun
Integrated Lights Out Manager User's Guide .