HP Book 800CCT 25

Message	Possible Cause
KEYBOARD FAILURE	The keyboard failed to respond to the
	RESET ID Command.
MACHINE IS LOCKED - TURN KEY	The system will not continue the boot
	sequence until you insert the key into the
	key lock and turn it.
NO BOOTABLE FLOPPY DRIVE 0 INSTALLED	No bootable floppy drive was detected.
	Possible solutions: 1) Power down the
	system and check all appropriate
	connections, cables, etc. 2) In
	configurations where no floppy drive is
	installed, run System Configuration Utility
	and make sure the diskette drive
	configuration item is set to “None”. 3)
	Replace the diskette drive if necessary.
NO INTERRUPTS FROM TIMER 0	The periodic timer interrupt is not
	occurring.
RAM PARITY ERROR AT LOCATION xxxx	A RAM parity error occurred at the
	specified (hexadecimal) location.
ROM AT xxxx (LENGTH YYYY) WITH NON-ZERO	An illegal adapter ROM was located at
CHECKSUM (zz)	the specified address. An external
	adapter (such as a video card) may be
	causing a conflict.
TIME/DATE CORRUPT - RUN SCU	The time and date stored in the real time
	clock have been corrupted, possibly by a
	power loss.
UNEXPECTED AMOUNT OF MEMORY - RUN SCU	The amount of memory detected by
	POST does not match the amount
	specified in CMOS RAM.
CMOS RAM TEST FAILED	A walking built test of CMOS RAM
	locations 0E (Hex) - 3F (Hex) failed.
DMA CONTROLLER FAULTY	A sequential read/write of the transfer
	count and transfer address registers
	within the primary and secondary DMA
	controllers failed.
FAULTY DMA PAGE REGISTERS	A walking bit read/write of the 16 DMA
	controller page registers starting at
	location 80 Hex failed.
FAULTY REFRESH CIRCUIT	A continuous read/write test of port 61h
	found that bit 4 (Refresh Detect) failed to
	toggle within an allotted amount of time.
INTERRUPT CONTROLLER FAILED	A sequential read/write of various
	Interrupt Controller registers failed.
ROM CHECKSUM INCORRECT	A checksum of the ROM BIOS does not
	match the byte value at F000:FFFF.

6

Contents

HP OmniBook 800CS/CT Page Notice Table of Contents Page List of Figures List of Tables Introduction Page Part Product Overview What’s New Product Features Product at a Glance Table 1 - Parts Identification Product Comparisons Page Page Page Page Page Page Troubleshooting Power-On Self-Test Beep Codes Display Codes Page OmniBook Diagnostics Running the diagnostics program Main diagnostic screen Figure 4 - Main Diagnostic Screen Running selected tests Special test hardware requirements Loop Back Connectors PCMCIA Type III extender card Figure 8 - SyCard Solder Bridges Command line options User interface commands Commands for toggling test settings Table 6 - Diagnostic Commands for Toggling Settings Mouse switch Key Action Table 7 - Diagnostic Hidden Commands Commands for setting test parameters Table 8 - Diagnostic Test Parameters Details on using the diagnostic tests RAM, plug in BIOS CMOS Upper PC Card Figure 9 - Sycard Test Results Lower PC Card Timers Real time clock IRQ controller Serial port Printer port Hard disk Floppy disk Battery Figure 10 - Keyboard Test Screen HP mouse Text mode mouse test Page Figure 11 - Mouse Test Screen (text mode) Graphic mode mouse sine test Figure 12 - Mouse Test Screen (graphics mode) Text mouse and graphic sine mouse tests selected Graphic draw screen mouse test selected Mouse Calibration testing Audio Display Docked device SCSI CD ROM SCSI Hard disk Dock keyboard Figure 13 - Dock Keyboard Test Screen Dock PS2 mouse Dock EEPROM Desktop Management Interface (DMI) Description of DMI Contents of the DMI Package Figure 14 - DMI Components Installing the DMI Package from Windows Uninstalling the DMI Package from Windows Using the DMI Interface Setup and Configuration SCU Main Screen System Menu Screen Docking Messages Passwords… PC Identification Enable Cache Status Panel Enable Password Configuration Input/Output Menu Screen External Devices… Audio Port… Video Stretched Enabled IrDA IR Power Menu Screen Default Menu Screen Exit Menu Screen Troubleshooting Tips OmniBook Components Power/battery Computer won’t turn on/won’t boot Lockup/computer freezes Computer noisy but working Miscellaneous Page CD ROM Drive Troubleshooting Resolving Docking Station Operating Problems Resolving OmniBook Docking Problems If the OmniBook isn’t released after pressing the Undock button Hardware Repair Battery Memory Figure 18 - Removing the Memory Module Hard Disk Drive Figure 20 - Folding the Keyboard Open left Figure 21 - Hard Drive Removal Handle the hard drive only by its edges to avoid damage from electrostatic discharge Figure 22 - Hard Drive Removal (continued) Figure 23 - Hard Drive Insulator Flap right Figure 24 - Inserting the Hard Drive Figure 25 - Proper Keyboard Flex Cable Position Hard Disk Drive Breather Holes Mouse Small Parts Keyboard Figure 30 - Keyboard Flex Cables To ensure a proper connection, be sure to place the keyboard flex cables securely into the zero insertion force connectors To avoid damage to the keyboard flex cables, do not allow them to fold under the keyboard Display F1360 only F1171 - F1175 Figure 33 - Keyboard Support Plate Screws Figure 34 - Display Flex Cables two both Figure 35 - Top Case and Display Removal Figure 36 - Intel Inside Sticker Placement MUST Always CPU Heat Transfer Disk Page Logic PCA Board Electronic Serial Number Figure 40 - Logic PCA Removal Note Figure 41 - Grommet and Bushing Placement Paw Active Other Components and Accessories Page Page Appendices Appendix A - Technical Specifications Mass Storage Specifications Hard Disk Drive Floppy Disk Drive CD-ROMDrive System Resources System Interrupts (IRQs) DMA Channels Memory Map I/O Addresses Appendix B - Hewlett-PackardPassword Removal Policy Page Appendix C - Hewlett-PackardTFT Display Quality Statement Appendix D - OmniBook Diagnostics BIOS Checksums Appendix E - OmniBook Diagnostics Error Messages Hewlett-Packardsupplied test messages Disk Drives (SCSI HD / internal HD / Floppy) SCSI loopback test Watergate Software supplied test messages Memory test responses Cache test responses VGA test responses Timer chip test responses CMOS RAM test responses Sound test responses Keyboard test responses Manual keyboard test COM test responses IRQ test resonses DMA test responses HD test responses FD test responses CD ROM test responses Appendix F - Part Numbers ACCESSORIES POWER CORDS MANUALS KEYBOARDS RECOVERY KITS