Fujitsu Eternus DX80 S2 - Figure 2.4 off Position (Marked O) of the Main Line Switches on a 2 U Power Distribution Unit

Chapter 2 Basic Operation
2.1 Powering On and Off
ETERNUS DX80 S2/DX90 S2 Disk storage system User’s Guide -Operation-
Copyright 2013 FUJITSU LIMITED P3AM-4842-12ENZ0
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● For 2U power distribution unit
Figure 2.4 OFF position (marked "O") of the main line switches on a 2U power distribution unit
When turning the main line switch to ON (marked "I") right after turning the main line switch to OFF (marked
"O"), turn it back to ON (marked "I") after the POWER LED of the power supply unit has turned off completely.
Main line switch