BX900 S2
Upgrade and Maintenance Manual
49
Basic hardware procedures
4.3
Shutting down the system unit
V
CAUTION!
For further safety information, please refer to chapter
"Important
information" on page 29
.
I
This step is only required when upgrading or replacing non-hot plug
components.
Ê
Inform the system administrator that the system unit will be shut down and
put offline.
Ê
Terminate all applications of the server blades.
Ê
Shut down the system unit by pressing the On/Off button for 2 seconds or
via the management blade web interface, see the "PRIMERGY BX900 S2
Blade Server System Unit Operating Manual" for detailed information.
Ê
Switch on the ID indicator on the Local Service Display or on the
management blade as described in section
"Locating the defective system
unit" on page 45
.
Disconnecting the power cords
Figure 3: Removing the power cord from the PSU cable tie
Ê
For each PSU, pull out the locking lever on the PSU cable tie (1) and loosen
the loop.
Ê
Disconnect the power cords from the PSUs and remove them from the cable
ties.
1