Kontron Micro Client 3 104 - Manual (Page 26)

7. Product Description Micro Client 3 – User’s Guide (Version 1.0)
7.2.2. Power Button and Control Indicators
Fig. 22: Controls of the MC 3 system (bottom rear side)
7.2.2.1.
Power Button
The power button (Fig. 19, Fig. 20 , pos. 7, and
Fig. 22
, pos. 1) allows to power ON/OFF the system.
Even when the system is turned off via the power button there is still a standby-voltage of 5 V on the
SBC. The system is not completely disconnected from the main power supply by turning off via the
power button.
Hints for DC power connection:
The DC main power supply should be able to be switched off and on via a 2-pole isolating switch.
The unit is only completely disconnected from the DC main power supply, when the DC power cord is
disconnected either from the DC main or the unit. Therefore, the DC power cord and its connectors must
always remain easily accessible.
7.2.2.2.
Power LED
The power LED (
Fig. 22
, pos. 4) indicates the current system power state (S0, S3, S4, or S5) as shown in shown in Fig. 23.
The power LED will blink red if an error condition was detected (the system is held off). The color red is reserved for error
codes, only.
Color System State
Off Power off or EC failure
Red
System held off
(i.e. over-temperature, etc.)
Orange System in S3/S4/S5
Green System in S0
Fig. 23: Color code for current system power state
An over-temperature condition has the highest of all priorities. The power button is deactivated as long as the temperature
is too high. To signalize this emergency state, the LED lights up red.
1 Power button
2 Power LED
3 HDD LED
4 Grounding stud with lock washers
1
4
3
2
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