Section 7 / Technical Details
19
Manual | Rev. 2 | Doc. No.: 7771
3:4
To clear CMOS: Remove and drain AC power. Move the shunt on PINs 1: 2 to 3:4
for a couple of seconds. Return the shunt from PINs 3:4 back to 1:2. Apply AC
power and permit the system to land on the first boot device. The system will
cycle power 2-3 times as part of this procedure, so do not be alarmed.
5:6
ME Recovery.
7:8
Password clear. For use: Drain AC power. Install a shunt on PINs 7:8 and boot
to first boot
device
. Drain AC power, remove this shunt and boot as normal.
9:10
BIOS Recovery – top swap enabled.
11:12
Disable Flash Descriptor Security.
13:14
Manufacturing Mode Enable.
15:16
Force VRON#.
17:18
Force Power Supply On.
FRONT PANEL INTERFACE
PINS
PURPOSE
1-2
System Power OK LED 1(-) 2(+)
3-4
Hard Drive Activity LED 3(-) 4(+)
5-6
BMC Error LED 5(-) 6(+)
7-8
BMC Status LED 7(-) 8(+)
9-10
Not used
11-12
Reset Switch 11(GND) 12(Reset_In#)
13-14
Power Button 12(GND) 14(Power Button In #)
STATUS LED
S
POST Code LEDs 1 – 8
As the POST (Power On Self-Test) routines are performed during boot-up, test codes are displayed
on Port 80 POST Code LEDs 0, 1, 2, 3, 4, 5, 6 and 7. These LEDs are located on the SATA connectors
near the front of the motherboard.
These POST codes may be helpful as a diagnostic tool. Specific test codes are listed in Appendix A -
BIOS Messages section of the SSP8268 Technical Reference Manual. After a normal POST