
100
Technical Reference
Table 11.
Server Board Jumper Summary
(continued)
Jumper Block
Jumper Name
Pins (default in bold)
What it does at system reset
J2J1
CMOS CLR
1-2, Protect
Preserves the contents of NVRAM.
2-3, Erase
Replaces the contents of NVRAM with the
manufacturing default settings.
J2J1
PSWD CLR
5-6, Protect
Maintains the current system password.
6-7, Erase
Clears the password.
J2J1
RCVRY BOOT
9-10, Normal
System attempts to boot using the BIOS
stored in flash memory.
10-11, Recovery
BIOS attempts a recovery boot, loading
BIOS code from a floppy diskette into the
flash device. This is typically used when the
BIOS code has been corrupted.
J2J1
BIOS WR EN
13-14, Protect
BIOS boot block is write-protected.
14-15, Erase/Program
BIOS boot block is erasable and
programmable.
General Procedure to Change Jumper Setting
The short general procedure for changing a configuration setting is the same for most of the jumper
functions, so we will describe it here.
1.
Observe the safety and ESD precautions at the beginning of this chapter.
2.
Turn off all connected peripherals, turn off system power, and disconnect the AC power cord.
3.
Remove the side cover. You do not need to remove the server board from the chassis, and you
probably do not need to remove any add-in boards.
4.
Locate the configuration jumpers at the edge of the server board toward the front of the system.
5.
Move jumper to pins specified for the desired setting.
6.
Reinstall the side cover, connect the power cord, and turn on the system for the change to take
effect.
7.
You may need to repeat these steps to move the jumper back to its original setting, depending
on the jumper function.
Summary of Contents for L440GX+
Page 1: ...L440GX Server Board Product Guide Order Number 722077 005 ...
Page 32: ...32 Upgrading ...
Page 84: ...84 Configuration Software and Utilities ...
Page 104: ...104 Technical Reference ...
Page 114: ...114 Equipment Log and Power Consumption Worksheets ...
Page 120: ...120 Index ...