Fault Isolation Using Selftest; Pcmcia Modem Problems - Texas Instruments Extensa 450 Series Maintenance Manual

LCD standby mode - If the LCD backlight remains off, even with the Contrast
Control set to its highest position, the LCD may be in Standby Mode. Press the
Standby or Power button to power up the system.
Notebook Set for External Monitor- use CMOS Setup to reset notebook.
LCD - Replace the cover-display assembly as described in Section 6 of this
manual.
Low battery - Use a fully charged battery.
5.3.3
When the computer is first powered up, it automatically performs a self-test of its
central hardware and memory functions. During self-test (which lasts for a few
seconds), the display shows copyright and version number information.
n
Note: Some procedures in this paragraph require you to use keystroke se-
quences, such as Ctrl-Alt-Del. To execute a keystroke sequence such as
this, you must press all three keys simultaneously.
5.3.3.1
Upon successful completion of the self-test, the computer automatically loads its
operating system and other built-in utilities. If the self-test fails to complete
successfully, the display shows one of the error messages described in Appendix A.
5.3.4
If an optional PCMCIA modem does not work properly, check the following items:
Proper installation of any PCMCIA options (check Modem settings under
Control Panel).
Dialing problem or wrong number - Try dialing a number that you have
previously dialed successfully.
Faulty phone line - Connect a telephone to the line and listen for a dial tone.
Software program - Check to ensure that you have installed the software
correctly.

Fault Isolation Using Selftest

Self Test Error Messages

PCMCIA Modem Problems

Troubleshooting 5-5