Texas Instruments Extensa 450 Series Maintenance Manual page 79

Keyboard Interface Error
Memory Size Mismatch
Missing operating system
Non-system disk or disk error. Replace
and strike any key when ready
Pointing Device Error
Pointing Device Interface Error.
Protected Mode Test Fail
RAM BIOS Bad
RAM Parity Error.
Real-Time Clock Error
Video RAM BIOS Bad
Checkpoint
D4h
FCh
01h
02h
03h
04h
A-2 Error Messages
Error Message
Table A-2 POST Checkpoint List
No.
Normal POST start
CMOS and BIOS ROM checksum test skip or
complete
80286 register test in-progress
CMOS write/read test in-progress or failure
BIOS ROM checksum in-progress or failure
Programmable Interval Timer test in-progress or
failure
Corrective Action
Cycle Power to Notebook. If
problem persists
Enter and then exit the System
Configuration Setup in the Setup
utility.
Correct the HDD type and reboot.
Refer to the specification label
pasted on the back side of the
notebook or attached to hard disk
drive.
Insert a system disk in drive A and
press any key
Cycle Power to Notebook; if
problem persists
Cycle Power to Notebook; if
problem persists, open up the
notebook and check the touchpad
cabling
Cycle power to Notebook
Cycle power to Notebook
Cycle power to Notebook if problem
persists
Press Ctrl-Alt-Esc to reconfigure
the system.
Cycle power to Notebook
Description