NEC Express 5800/120Lg, Service Manual

Page: 64 / 204

3-22 Configuring Your System
Configuring System Board Jumpers
Before You Begin
Only a qualified technical person should perform the procedures in this section.
!
CAUTION
Electrostatic discharge (ESD) can damage the system
board. Modify the system board only at an ESD workstation.
Otherwise, wear an antistatic wrist strap attached to chassis
ground.
The system board jumpers enable you to set specific operating parameters for
your system. A jumper is a small plastic-encased conductor (shorting plug) that
slips over two jumper pins.
Figure 3-1 shows the location of system board jumpers. Referring to Figure 3-1,
jumper A is the CMOS clear configuration jumper. Jumper B shown in Figure
3-1 is the password clear configuration jumper. Table 3-3 lists the factory
default settings for the CMOS and password configuration jumpers.
RECOVERY
BOOT PASSWD
CLR CMOS
CLR BMC FLASH
EN
A CMOS Clear
B Password Clear
C Factory Setting (Do not
change)
Figure 3-1. System Board Jumpers
CMOS CLR: Pin for protecting/
clearing the CMOS
contents (The figure
shows the factory-set.)
PASSWD CLR: Pin for protecting/
clearing the password
: Strapped
A
B
C