Display Codes; Table 5 - Post Display Codes - HP OMNIBOOK 5500 Service Manual

Display Codes

There are a number of Power On Self Test (POST) tests that are performed after the Beep Code
tests. Failure of one or more of these tests will result in a displayed failure code (such as
03044). It is extremely important not to interpret a failure code immediately as a hardware
failure. The failure should be confirmed with a clean boot. A clean boot is defined as pressing
the reset button after removing all accessories (including memory, floppy drive, modems, PC
cards, and printers) and providing a reliable power source. Note, make sure the display is
adjusted to be visible.

Table 5 - POST Display Codes

Message
CLOCK NOT TICKING CORRECTLY
COLOR/MONO SWITCH INCORRECT
CMOS CHECKSUM INVALID - RUN SCU
CMOS FAILURE - RUN SCU
FLOPPY CONTROLLER FAILED
FLOPPY DISK TRACK 0 FAILED
FLOPPY INFORMATION INVALID - RUN SCU
HARD DISK CONTROLLER ERROR
HARDWARE INFO DOES NOT MATCH VIDEO
CARD - RUN SCU
KEYBOARD CONTROLLER FAILURE
KEYBOARD FAILURE
MACHINE IS LOCKED - TURN KEY
Possible Cause
The real time clock is not ticking.
The COLOR/MONO switch on the system
board is incorrect for the installed
hardware.
CMOS RAM information has been
corrupted and needs to be reinitialized via
the System Configuration Utility.
CMOS RAM has lost power and needs to
be reinitialized via the System
Configuration Utility.
The floppy controller failed to respond to
the reset command. Power down the
system and check all appropriate
connections. It the floppy controller
continues to fail, you may need to replace
it.
The floppy drive cannot read track 0 of
the floppy disk in the drive. Try another
diskette. If the problem persists, you may
need to replace the floppy drive.
The drive parameters stored in CMOS do
not match the floppy drives detected in
the system.
The hard disk controller failed to respond
to the reset command. Possible
solutions: 1) Check the drive parameters.
2) Power down the system and check all
appropriate connections. If the problem
persists, you may need to replace the
hard disk controller.
The video adapter type specified in
CMOS RAM does not match the installed
hardware.
The keyboard failed the self-test
command. Check to see if the keyboard
controller is properly installed. If the
problem continues, replace the controller.
The keyboard failed to respond to the
RESET ID Command.
The system will not continue the boot
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