HP Kayak XA 05xx Manual page 19

Test
1 When pressing one of the LCD status
panel buttons, nothing is displayed.
2 When the system is powered on, nothing is
displayed.
Presence of CPU processor slot.
Monitoring of some voltages: 12V
Number of installed DIMMs
Compatibility of DIMMs. The BIOS checks that
the inserted DIMMs are both compatible with
one another, and compatible with the Front Side
Bus frequency.
System board clock generators (PLL).
Monitoring of power signals to the CPU. This
checks the entire power system from the power
supply outlet to the CPU.
Availability of video board. It is also checked by
the BIOS. If an error is detected, it is not a fatal
one and the BIOS will continue its execution
normally.
Check on ability of CPU to run a given code. HP
MaxiLife waits for a synchronization event from
the BIOS. Any failure that prevents the
execution of the firmware will trigger an error.
The BIOS then executes the Power On Self Test
(POST) sequence. In this phase, HP MaxiLife
waits for any error messages that the BIOS may
issue.
If an error is detected, a screen appears on the LCD panel. The following
table shows the test sequence carried out, the type of error message, and
the action to take.The errors mentioned correspond to standard error codes
(they are displayed without you having to press a key on the LCD status
panel).
Error Code
LCD status panel is
blank
CPU SOCKET
POWER SUPPLY
NO RAM
RAM TYPE
BOARD PLL
POWER
NO VIDEO
BIOS
POST XXXX
Action to Take
• Check that the two cables to the LCD status panel are properly
connected (refer to the system board layout for position).
• Check that the PC's power cable is plugged in.
• Check that the CPU is correctly installed in the processor
socket.
• Check the power supply connectors, CPU.
The error message could also show: Power CPU.
• Check that the memory module is correctly installed in the
memory socket.
• Check the installed memory modules. This error occurs when
mixing incompatible memory modules, for example, when
installing a 66 MHz DIMM on a 350 MHz or higher system, or
when mixing Unbuffered and Registered memory modules.
• Check the power supply connector.
• Replace the system board (PLL clock generator).
• Check that the processor is correctly installed.
• Check the power supply unit connectors.
• Check that the video board is correctly installed.
Note: No error is detected if a monitor is not connected to an
installed video board.
• Flash the latest version of the system BIOS by using the system
recovery procedure. Set switch 10 to the down position.
• Check that the RAM is correctly installed.
• Check that the CPU is firmly inserted.
• If the screen is working, you can obtain the meaning of the
error by typing "Enter" at the end of the POST. Or, you can
check the list of errors that are available on the HP World-Wide
Web support page.
HP MaxiLife Utility
19