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2.8.5
Power LED and keyboard lock connector (JFP2 / PWR_LED &
KEY LOCK)
(JFP2 / PWR_LED & KEY LOCK) is a 5-pin connector for the power on LED and Key
Lock function. Refer to Appendix B for detailed information on the pin assignments.
The first is "ATX power mode"; the system turns on/off by a momentary power button.
The second is "AT Power Mode"; the system turns on/off via the power supply switch.
The third is another "AT Power Mode" which makes use of the front panel power
switch. The power LED status is indicated in the following table:
Table 2.1: ATX pwr supply LED status (No AT power support)
Power mode
PSON1
(on back plane)
jumper setting
System On
System Suspend
System Off
2.9
Audio Connector (AUDIO1)
LED
LED
(ATX Power Mode)
(AT power Mode)
(On/off by
(On/off by switching
momentary button)
power supply)
pins 2-3 closed
pins 1-2 closed
On
On
Fast flashes
Fast flashes
Slow flashes
Off
27
LED
(AT power Mode)
(On/off by front
panel switch)
Connect pins 1 & 2 to
panel switch via cable
On
Fast flashes
Off
AIMB-226 User Manual
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