IBM System x3550 M4 Installation And User Manual page 32

The following illustration shows the LEDs and controls on the light path diagnostics
panel.
v Remind button: This button places the system-error LED/check log LED on the
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IBM System x3550 M4 Type 7914: Installation and User's Guide
front panel into Remind mode. In Remind mode, the system-error LED flashes
once every 2 seconds until the problem is corrected, the server is restarted, or a
new problem occurs.
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. The remind function is controlled by the IMM2.