2-20
Cisco UCS C240 Server Installation and Service Guide
OL-25761-01
Chapter 2 Installing the Server
Service Headers and Jumpers
Using the Clear Password Header J2067
See
Figure 2-7
for the location of this header. You can jumper this header to clear the user-defined BIOS
administrator password.
Step 1
Power off the server as described in
Shutting Down and Powering Off the Server, page 3-7
.
Step 2
Disconnect all power cords from the power supplies.
Step 3
Slide the server out the front of the rack far enough so that you can remove the top cover. You might have
to detach cables from the rear panel to provide clearance.
Caution
If you cannot safely view and access the component, remove the server from the rack.
Step 4
Remove the top cover as described in
Removing and Replacing the Server Top Cover, page 3-8
.
Step 5
Remove PCIe riser 1 and set it aside to provide clearance for accessing the header. See
Replacing a PCIe
Riser, page 3-38
. You do not have to remove any cards from the riser.
Step 6
Move the shorting jumper to pins 2 and 3 of the J2067 header (see
Figure 2-7
).
Step 7
Reinstall the top cover and reconnect AC power cords to the server. The server powers up to standby
power mode, indicated when the Power LED on the front panel is amber.
Step 8
Return the server to main power mode by pressing the
Power
button on the front panel. The server is in
main power mode when the Power LED is green.
Note
You must allow the entire server, not just the service processor, to reboot to main power mode
to complete the reset. This is because the state of the jumper cannot be determined without the
host CPU running.
Step 9
Press the
Power
button to shut down the server to standby power mode, and then remove AC power cords
from the server to remove all power.
Step 10
Remove the top cover from the server.
Step 11
Move the shorting jumper from header pins 2 and 3, back to its default position on pins 1 and 2.
Note
If you do not move the jumper, the password is cleared every time that you power-cycle the
server.
Step 12
Replace PCIe riser 1 to its position. See
Replacing a PCIe Riser, page 3-38
.
Step 13
Replace the top cover, replace the server in the rack, replace power cords and any other cables, then
power on the server by pressing the
Power
button.
