Clearing CMOS memory
To clear the CMOS memory, complete the following steps:
1.
Read the safety information that begins on page vii and “Installation guidelines”
2.
Turn off the system-board tray and all attached devices; then, disconnect the
chassis power cord and external cables.
3.
If the system-board tray is installed in a chassis, remove it (see “Removing the
system-board tray from a 2U chassis” on page 75 or “Removing the
system-board tray from a 3U chassis” on page 77).
4.
If an expansion enclosure is installed, remove it (see “Removing an expansion
enclosure from a system-board tray” on page 73); otherwise, remove the
system-board tray cover (see “Removing the system-board tray cover” on page
121).
5.
Remove the battery (see “Removing the battery” on page 86).
6.
Locate the Clear RTC RAM jumper (CLRTC1) (see “System-board jumpers” on
7.
Move the jumper from pins 1 and 2 to pins 2 and 3.
8.
Wait approximately 10 seconds; then, move the jumper back to pins 1 and 2.
9.
Install the battery (see “Installing the battery” on page 86).
10. Install the expansion enclosure, if you removed one (see “Installing an
expansion enclosure on a system-board tray” on page 74); otherwise, install
the system-board tray cover (see “Installing the system-board tray cover” on
page 122).
11. Install the system-board tray in the chassis (see “Installing the system-board
tray in a 2U chassis” on page 76 or “Installing the system-board tray in a 3U
chassis” on page 78).
12. Reconnect the external cables and power cords; then, turn on the attached
devices and turn on the system-board tray.
13. Run the BIOS configuration utility program and set configuration parameters as
necessary (see “Using the BIOS configuration utility program” on page 156 for
information).
Updating (flash-updating) the BIOS code
Periodically, IBM makes new levels of BIOS code available on the Web. Always
check http://www.ibm.com/systems/support/ for the latest level of BIOS code, device
drivers, documentation, and hints and tips. You can use one of the following
methods to update (flash-update) the BIOS code on the system-board tray:
v
Download the BIOS code update file directly to the hard disk drive.
v
Download the BIOS code update file to a diskette (you must attach an optional
external USB portable diskette drive to the system-board tray); then, update the
BIOS code on the system-board tray.
v
Download the BIOS code update file to a CD or DVD (you must attach an
optional external USB portable CD or DVD drive to the system-board tray); then,
start the system-board tray with the CD or DVD in the CD or DVD drive to
update the BIOS code.
One file type is available for each of these methods. The description next to each
file indicates the type of medium to which you can download the file. A readme file
is also available with instructions for installing the BIOS code update.
Chapter 2. Diagnostics
47
