Sony PCV-E204 Guide de l'utilisateur télécharger pdf (Page 26)

VAIO MicroTower System Reference

Configuring the System Board

The system board contains two configuration jumpers that provide three

modes of operation: Normal mode, Clear Password mode, and BIOS

Recovery mode.

Normal mode allows normal access to the BIOS Setup Utility. The Central

Processing Unit (CPU) input clock is forced to remain at 66 MHz (fast

mode), and the Basic Input/Output System (BIOS) uses the User CMOS

settings (as opposed to the System CMOS settings). The CMOS and

NVRAM settings are only cleared if the checksum test returns false.

Access to specific setup fields is controlled by a supervisor password or

user password.

Clear Password mode removes the password that is stored in CMOS.

BIOS Recovery mode sets the CPU input clock to 66 MHz (fast mode) and

attempts to perform a blind BIOS update.

1 Remove the side panel (see “Removing the Left Side Panel” on

page 22).

2 Remove the bottom panel (see “Removing the Bottom Panel” on

page 23).

✍

The configuration jumpers should never need changing unless otherwise directed by a

technical support or service technician.

! Before opening the system, save any open files, exit Windows, turn off the

power of the computer and all attached peripherals, and unplug the

power cord.

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Sony PCV-E204 Guide de l'utilisateur Page 26