Basic Pre-Boot Diagnostics - HP Kayak XU800 Technical Reference Manual

6 Tests and Error Messages
MaxiLife Test Sequence and Error Messages

Basic Pre-boot Diagnostics

The first diagnostic (called basic pre-boot diagnostics) is run to check the
presence of the processor(s) or terminators, VRMs, power supply, CPU
Board PLL and memory.
The pre-boot diagnostic tests are run in order of priority with respect to
their importance to computer functions.
The first detected error displays a message on the LCD status panel. If this
happens, one of the following screens could appear.
Presence of processor, processor
terminator or VRM
ERROR
CPU SOCKET
Missing or incorrectly
installed processor or
processor terminator
The following diagram shows how the Pre-boot Diagnostics works when it
encounters an error.
PLL Frequency
Vcc State (5V)
PGOOD (VRM output)
108
Control of Some Voltages
: VRMs, 12V, 3.3V, 1.8V, 2.5V
ERROR
POWER SUPPLY
VRM or CPU power supply are not connected.
If an Error Power message is displayed, a cause could be that the
power supply is not connected, or the VRM is installed with an
unpopulated CPU socket (unsupported configuration).
MaxiLife Firmware
LCD Status Panel
ERROR
CPU SOCKET
Control of the CPU Board
ERROR
BOARD PLL
System Board is not connected, or
the system board needs replacing.
CPU or Terminator
Voltage 12V, 3.3V, 1.8V, 2.5V
Voltage CPU1, CPU2
Memory
An error has been detected when checking the
processor and processor terminator. The
displayed error message could indicate a missing
processor or processor terminator.
2
I C Bus
System