HP Vectra VL6 6 Technical Reference Manual page 33

System Board Switches
Five of the system board switches (whose location is shown on page 18) set
the working frequencies for the computer, as summarized on page 27. The
others set the configuration for the computer, as summarized in the
following table.
Switch
Bus frequencies (see the table on page 27)
1-5
Clear CMOS:
Open = normal operation
6
Closed = clear CMOS (to reload the Setup program defaults)
Password:
Open = normal operation
7
Closed = disabled / clear User and Administrator passwords
Keyboard space-bar power-on:
Open = disabled
8
Closed= normal operation
For test purposes only, do not use:
9
Open = normal operation
Product identification:
Open = normal operation
10
Closed = clear the product identification field in the CMOS memory
By setting switch SW6 in the
data cleared (in the CMOS memory and the Serial EEPROM), but also all the
Plug-and-Play data that had been saved in the Serial EEPROM. However,
the serial number, the tattooing string, the date and the time are each
retained.
By setting switch SW8 in the
function is enabled. Note, though, that it must also be enabled in the
Power-On Space-Bar
Turning the computer on, with switch SW10 in the
the product identification field in the BIOS, and causes the computer to
prompt for the new information. By identifying the product correctly (after
replacing a defective system board by a new one), the BIOS is able to tailor
itself for the particular product, and to enable the appropriate features.
Functions of the System Board Switches
position, not only is the configuration
Closed
position, the Power-On Space-Bar
Closed
field of the Power Menu in the Setup program.
2 System Board
Devices on the ISA Bus
position, clears
Closed
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