NEC MC2200, Руководство пользователя

Страница: 63 / 142

Configuring Your System 3-21
Table 3-11. CPU Speed Jumper Configurations
CPU SPEED Jumper Settings
J1A J2A J3A J4A J5B
233/66 MHz 1-2 2-3 1-2 2-3 2-3
266/66 MHz 2-3 2-3 2-3 1-2 2-3
300/66 MHz 1-2 2-3 2-3 1-2 2-3
333/66 MHz 2-3 2-3 1-2 1-2 2-3
Moving System Board Jumpers
!
Caution
Before doing the procedures in this section, make sure that your
system is powered off and unplug the AC power cord from the back
of the chassis. Failure to disconnect power before moving the
jumpers can result in personal injury and equipment damage
Note: Observe static precautions. Use an antistatic wrist strap.
To configure the system board options:
1. Power off the system and remove the covers as described in the Upgrades and
Options chapter.
2.
Check to ensure the system power cord is removed from the back of the system.
3.
Locate the position of the jumpers on the system board you are changing. Refer to
Figure 3-1.
4.
To change a jumper setting, use a pair of needle-nose pliers or your fingers to
remove the jumper from its current location. Position the jumper over the two pins
for the desired setting and press it onto the pins. Be careful not to bend the pins.
Refer to Table 3-10 for system board jumper settings.
5.
Record changes to the system board jumpers in Table 3-10.
6.
Install the system covers and power up the system using procedures in chapter 4 of
this guide.
7.
Run the RCU utility to verify your reconfiguration of the system board.
Updating the BIOS
To update the system BIOS:
Note: This procedure clears the event log contents. If you want to
save the event log contents, run the Event Log Reader Utility.
1.
Using the EXPRESSBUILDER CD-ROM, create the BIOS FLASH diskette.
2. Insert a bootable DOS diskette into Drive A and power up the system.