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Chapter 4: Motherboard Connections
Power On & BMC/BIOS Status LED Button
The Power On and BMC/BIOS Status LED button is located on pins 1 and 2 of JFP1.
Momentarily contacting both pins will power on/off the system or display BMC/BIOS status.
Refer to the tables below for more information.
Reset Button
The Reset Button connection is located on pins 3 and 4 of JFP1. Momentarily contacting both
pins will reset the system. Refer to the table below for pin definitions.
Power Button & BIOS/BMC Status LED Indicator
Pin Definitions (JFP1)
Pin#
Definition
1
Signal
2
Ground
Power Button
LED States
Status
Event
Green: solid on
System power on
BMC/BIOS blinking green @ 4Hz
BMC/BIOS checking
BIOS blinking green @ 4Hz
BIOS recovery/update in progress
BMC blinking red x2 (2 blinks red) @ 4Hz, 1 pause @ 2Hz (on-on-off-off)
BMC recovery/update in progress
BMC/BIOS blinking green @ 1Hz
Flash not detected or golden image
checking failure
Reset Button
Pin Definitions (JF1)
Pin#
Definition
3
Reset
4
Ground
Power Fail LED
The Power Fail LED connection is located on pins 5 and 6 of JFP1. When this LED turns
solid red, it indicates a power failure. Refer to the table below for pin definitions.
Power Fail LED
Pin Definitions (JF1)
Pin# Definition
5
3.3V
6
PWR Fail for LED6 (Solid red on: PWR failure)