Unpack A Spare Component; Powering Off System Unit - Hitachi Compute Rack 220S Replacement Manual

Unpack a spare component

1. Remove the spare component from the static-protective container.
2. Verify that the spare component is the correct code for replacement.
3. Return the spare component to the container or place it on an antistatic mat
until you are ready to install it.

Powering off system unit

This section describes the procedures to powering off the system unit.
You need to perform the following procedure to replace a non hot-swappable
component.
1. Confirm that the devices and the peripherals connected to the system are not
being accessed.
2. Confirm that the ACCESS LED is OFF.
3. Press the POWER switch on the front side of the system unit.
The power for the system unit is turned off.
POWER LED
Figure 3-3: Turn off the POWER switch
4. Turn off the peripherals.
3-4
POWER switch
ACCESS LED
Depending on a peripheral, you may need to turn off the peripheral
before you turn off the system unit. For details, see the manual of
each peripheral device.
If the power is automatically turned off when the operating system

(OS) is shut down, you do not need to press the POWER switch.
The power may not be turned off due to cache protection even if

you press the POWER switch. In this case, wait until the power
will be turned off.
The fans inside the power supplies of the system unit continue

running unless the AC power source is turned off.
Preparation
Hitachi Compute Rack 220S CRU Replacement Guide