Hitachi Compute Rack 220H Getting Started Manual page 32

FUNCTION switch
2-6
When you intend to press a SERVICE switch, be careful not to press the
POWER switch. The system will be shut down if the POWER switch is
pressed.
When an AC cable is connected and the system unit gets supplied with
AC power, both SERVICE LEDs on the front side and on the rear side of
the system unit blink for about 60 seconds. During this period, the
MAINTENANCE LEDs are turned off.
The system unit doesn't start unless the SERVICE LEDs finish blinking.
So you will have to wait the system to start until the LEDs finish
blinking if you press the POWER switch while the SERVICE LEDs are still
blinking.
Do not press the FUNCTION switch and the SERVICE switch at the
same time. NMI is issued and the system will be forcibly shut down.
If you press the FUNCTION switch continuously for 10 seconds or more
while the management interface is not connected to LAN, the system
unit gets into the BMC maintenance mode and the ERROR LED will
blink.
BMC maintenance mode is used during maintenance work. Avoid this
operation. When into this mode, you can release the system unit from
the BMC maintenance mode by pressing the FUNCTION switch
continuously for 10 seconds or more using, for example, a ballpoint
pen.
When BMC maintenance mode is canceled, the ERROR LED stops
blinking.
Hitachi Compute Rack 220H Getting Started Guide
Overview