HPE Edgeline EL20, Руководство по техническому обслуживанию и ремонту, Страница: 19 / 52

If you must dismount the gateway or remove a non-hot-plug component from the gateway, then you
must power down the gateway.
2. Dismount the gateway .
If the environment, cabling configuration, or the gateway location creates unstable conditions, then
dismount the gateway and place it on a stable surface.
3. Remove the bottom access panel .
Powering down the gateway
Before powering down the gateway for any upgrade or maintenance procedures, you must back up
critical gateway data and programs.
Use one of the following methods to power down the gateway:
• Press and release the Power On/Standby button.
This method initiates a controlled shutdown of applications and the OS before the gateway enters
standby mode.
• Press and hold the Power On/Standby button for more than 4 seconds to force the gateway to power
down.
This method forces the gateway to power down without properly exiting applications and the OS. If an
application stops responding, you can use this method to force a shutdown.
Before proceeding, you must ensure that the gateway is in standby mode by verifying that the system
power LED is off.
Dismounting the gateway
Procedure
1. Remove the four T-10 Torx head screws securing the wall-mount bracket to the wall.
2. Remove the four T-10 Torx head screws securing the wall-mount bracket to the gateway, and then
remove the brackets.
3. Remove the wall-mount bracket from the gateway.
Powering down the gateway 19