Background

DEIMOS rotation is controlled by roto, a diskless Linux PC that resides in the DEIMOS cradle. Although the system is typically very robust, it may occasionally require a reboot, especially if keamano has been rebooted. If restarting the rotator daemons by executing
	deirot_restart
on keamano as user kics fails to fix the rotator, then try a soft or hard reboot as described below.

Soft Reboot

If you are able to log into roto, then the preferred reset method is to perform a soft reboot as follows:

Hard reboot

If you can't log in to roto, then the only way to reboot the system is to power cycle the machine. Someone at the summit must follow this procedure to perform a hard reboot on roto:

Figure 1. Panel to be removed for resetting rotator.

Image showing panel to be removed for resetting rotator

Figure 2. Location of rotator reset buttons.

Image showing location of computer reset button (left).