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Express-HLE
4.2
Status LEDs
To facilitate easier maintenance, status LED’s are mounted on the board.
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LED Descriptions
Name
Color
Connection
Function
LED1
Blue
BMC output
Power Sequence Status Code (BMC)
Power Changes, RESET
(see 5.1.4 Exception Codes below)
LED2
Green
Power Source 3Vcc
S0
LED ON
S3/S4/S5
LED
OFF
ECO mode
LED OFF
LED3 Red
BMC
output
and same signal as WDT
(B27) on BtB connector
Module power up
WD LED = LED OFF
Watchdog counting
WD LED = LED OFF
Watchdog timed out
WD LED = LED ON
Watchdog RESET
WD LED = LED ON
Rebooted after WD RESET WD LED = LED ON
Rebooted after PWRBTN WD LED = LED ON
Rebooted after RESET BTN WD LED = LED OFF
Note: only a RESET not initiated by the BMC can clear the WD LED (user action)
