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Switch
Default
Setting
1
OFF
Flashing Enable
2
OFF
CMOS is in normal
operation
3
OFF
Password is in normal
operation
2 Casing, System Boards and Video
System Board, Switches and Jumpers
System Board Switches and Jumpers
This section indicates the switches and jumpers used to modify the system
settings.
SW1 Switch
This switch is multi-purpose and is used to modify BIOS, CMOS and
password settings.
OFF
ON
Flashing Disable
CMOS Clear
Password Clear
SW2 Switch
This switch is used to select the CPU Bus Frequency / CPU Frequency ratio.
The following table includes some examples of the settings to use for
different processor speeds. (Jumper J7 settings are also shown. This jumper
is described on the next page.)
Processor Speeds
CPU Frequency 133 MHz
CPU Frequency 150 MHz
CPU Frequency 166 MHz
10
Updating the BIOS. Set the security mode. Set the switch to the ON
position to prevent the BIOS from being upgraded.
To clear the CMOS configuration. Set the switch to the ON position and
restart the PC. Return the switch to the OFF position and restart the PC
to return to normal operation.
To clear the password. Set the switch to the ON position and restart the
PC. Return the switch to the OFF position and restart the PC to return to
normal operation.
Switch Block SW2
Position
Ratio
1
2
CPU Bus
Frequency
1 / 2
ON
OFF
2 / 5
ON
ON
2 / 5
ON
ON
COMMENTS
Jumper J7 Settings
Pins Shorted
66 MHz
3 - 4
60 MHz
1 - 3
66 MHz
3 - 4
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