v Remind button: Press this button to place the system-error LED on the front
information panel into Remind mode. By placing the system-error LED indicator
in Remind mode, you acknowledge that you are aware of the last failure but will
not take immediate action to correct the problem. In Remind mode, the
system-error LED flashes rapidly until one of the following conditions occurs:
– All known errors are corrected.
– The server is restarted.
– A new error occurs, causing the system-error LED to be lit again.
v NMI button: The NMI button on the front panel will come on when this button is
pressed. Press this button to force a nonmaskable interrupt to the
microprocessor. You might have to use a pen or the end of a straightened paper
clip to press the button. It allows you to blue screen the server and take a
memory dump (use this button only when directed by the IBM service support).
v Checkpoint code display: This display provides a checkpoint code that
indicates the point at which the system stopped during the boot block and POST.
A checkpoint code is either a byte or a word value that is produced by UEFI. The
display does not provide error codes or suggest components to be replaced.
v Reset button: Press this button to reset the server and run the power-on
self-test (POST). You might have to use a pen or the end of a straightened paper
clip to press the button. The Reset button is in the lower-right corner of the light
path diagnostics panel.
Chapter 3. Diagnostics 103
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