Cmos Clear (Jcmos1); Power Switch/Hdd Led/Smbus/Speaker Pin Header (Jfp1); Power Led And Keyboard Lock Pin Header (Jfp2) - Advantech AIMB-275 A2 User Manual

1.8.2

CMOS Clear (JCMOS1)

The AIMB-275 A2 motherboard contains a jumper that can erase CMOS data and
reset the system BIOS information. Normally this jumper should be set with pins 1-2
closed. If you want to reset the CMOS data, set CMOS1 to 2-3 closed for just a few
seconds, and then move the jumper back to 1-2 closed. This procedure will reset the
CMOS to its default setting.
Table 1.3: CMOS1
Function
*Keep CMOS data
Clear CMOS data
* Default
1.8.3

Power Switch/HDD LED/SMBUS/Speaker Pin Header (JFP1)

Table 1.4: Power Switch/HDD LED/SMBUS/Speaker Pin Header (JFP1)
Pin Signal
1 +5V
3 Power Button+
5 HDDLED-
7 SPK_P3
9 System Reset+
11 SMB_CLK
1.8.4

Power LED and Keyboard Lock Pin Header (JFP2)

Table 1.5: Power LED and Keyboard Lock Pin Header (JFP2)
Pin
1
2
3
4
5
AIMB-275 A2 User Manual
Jumper Setting
12
3
10
1
Pin
2
4
6
8
10
12
1 2 3 4 5
Signal
LED Power
NC
GND
Keyboard LOCK#
GND
8
Signal
HDDLED+
NC
Power Button-
SMB_DATA
SPK_P4
System Reset-