System Board Switches; Architectural Diagram - HP x4000 Technical Reference Manual

System Board
System Board Component Layout

System Board Switches

The system board includes a 4-pole DIP switch (shown in Figure 2-2),
which lets you configure BIOS functions. Because the switches are read
only at system start up, you must change the switch positions when the
Workstation is shut down.
Switch Function
1 Clear BIOS
password
2 Boot block
recovery
3 Clear CMOS
4 Enable safe mode

Architectural Diagram

Figure 2-3 enumerates the x4000 system board features:
1. One or two dp Xeon processors
2. Intel 860 memory controller hub (MCH)
3. Memory expansion card
4. Intel 82806 PCI 64-bit Hub (P64H) connected to 16-bit Hublink B
5. Intel 82801BA interface controller hub (ICH2) connected to 8-bit
Hublink A
28
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Default Comment
Off Clears both Administrator and User
passwords, if they have been set.
Off Forces a boot block recovery from a
bootable BIOS flash disk in the floppy
disk drive.
Off Reset CMOS settings to BIOS defaults.
You can also do this with the
the Setup program as described in
"Clearing the CMOS" on page 46.
Off Force processors to run at 800 MHz. This
can be used as a troubleshooting tool or
to correct a problem after adding a
second processor. Before using this, flash
the BIOS as described at
www.hp.com/workstations/support
this switch as a last resort. If it gets the
system running, replace the processors.
If the problem persists, replace the
system board.
key in
F9
. Use
Chapter 2