Sony PCV-E314DS Reference Manual - Page 29

Configuring the System Board, mode, and the Basic Input/Output System BIOS uses the User CMOS

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Configuring Your System 21 Configuring the System Board The system board contains two configuration jumpers that provide three modes of operation: Normal mode, Clear CMOS 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 100 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. The Clear CMOS mode removes the password that is stored in CMOS. No other parameters are cleared. BIOS Recovery mode sets the CPU input clock to 100 MHz (fast mode) and attempts to perform a blind BIOS update.  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. 1 Remove the side panel (see "Removing the Left Side Panel" on page 24). 2 Remove the bottom panel (see "Removing the Bottom Panel" on page 25).

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Configuring Your System
21
Configuring the System Board
The system board contains two configuration jumpers that provide three
modes of operation: Normal mode, Clear CMOS 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 100 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.
The Clear CMOS mode removes the password that is stored in CMOS. No
other parameters are cleared.
BIOS Recovery mode sets the CPU input clock to 100 MHz (fast mode)
and attempts to perform a blind BIOS update.
1
Remove the side panel (see
“Removing the Left Side Panel”
on
page 24).
2
Remove the bottom panel (see
“Removing the Bottom Panel”
on
page 25).
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.