Sony PCV-R526DS 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 five configuration switches that provide the following: u Switch 1: Normal mode and Clear CMOS mode. u Switches 2 through 5: CPU Frequency multiplier. 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.  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 cover (see "Removing the Cover" on page 24).

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Configuring Your System
21
Configuring the System Board
The system board contains five configuration switches that provide the
following:
Switch 1: Normal mode and Clear CMOS mode.
Switches 2 through 5: CPU Frequency multiplier.
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.
1
Remove the cover (see
“Removing the Cover”
on page 24).
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.