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2.8.5
Power LED and keyboard lock connector (JFP3/PWR_LED &
KEY LOCK)
(JFP3/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 Power LED cable should be connected to pin 1-3. The key lock button cable-
should be connected to pin 4-5. There are 3 modes for the power supply connection.
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 2.2: ATX power supply LED status (No support for AT power)
Power mode
PSON1
(on back plane)
jumper setting
System On
System Off
S3
S4
2.9
Line Out, Mic In Connector (AUDIO1/AUDIO2)
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
Slow flashes
Off
Fast flashes
N/A
Slow flashes
N/A
21
LED
(AT power Mode)
(On/off by front
panel switch)
Connect pins 1 & 2 to
panel switch via cable
On
Off
N/A
N/A
Line Out Mic In
AIMB-231 User Manual
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