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Functional Description
MEN Mikro Elektronik GmbH
35
20BC50R00 E1 – 2015-09-07
3.7.1
Status LED
The status LED (LED2) is connected to the system’s board controller.
It has the following behavior:
• off, if system is in S5 state
• blinking at less than 0.5 Hz if system is in S3 state
• on, if system is in S0 state and BIOS has sent live sign after power-up
• it flashes repeatedly n times according to an error code and pauses for one sec-
ond until the system is restarted or completely powered-off, if system is in error
condition and error code is n. See the following table for supported error codes.
Table 9.
Error codes signaled by Status LED flashes
Error Code
Description
Solution
1
+V3.3A Voltage Failure
internal failure
2
Input Voltage Failure
internal failure
3
External Power Supply Failure
check power supply voltage range
4
CPU too hot
check thermal constraints
5
BIOS Live Sign Timeout
internal failure
6
System Reset Timeout
internal failure
7
Platform Reset Failure
internal failure
8
Chipset Handshake Failure
internal failure
9
System Power OK Failure
internal failure
255
Invalid PIC state
internal failure