•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.
•I/O Address Conflict - The multimedia sound capability of th e Extensa
uses I/O address 220. However, this may conflict with some third-party
PCMCIA cards like the IBM Token Ring card. In this case, reset the
Extensa multimedia sound to I/O address 240 as shown in Figure 5-3.
5.3.5 Fault Isolation Using Diagnostics
PC-Doctor supplied with the Extensa Series Notebooks is a pow erful
diagnostics tool that can help you scan an internal RAM system for viruses,
determine the hardware configuration o f a local or remote system,
benchmark its performance, analyze the perfor mance of all subsystems,
and perform a suite of interactive and non-in teractive tests on attached
devices. The test results are stored in a log which can be printed out (by
pressing F2) or saved in a disk file (by pressing F3).
Features of the diagnostic program are accessed through a series of
pull-down menus and basic keyboard keys (cursor keys to move highlighted
pointer, Enter key to select a highli ghted feature, Esc key to cancel a
function and move back one level. PC-Doctor is typically user friendly but if
you don’t understand a feature, context-sensitive help information is
available at any time by pressing the F1 function key; pressing the F1
function key twice accesses the online Technical Reference Manual for
PC-Doctor.
A powerful set of utilities within PC-Doctor (that can be run locally or
remotely) simplify the task of determining system configuration data,
I/O Address 220
(Both switches in
lower position)
I/O Address 240
(Both switches in
upper position)
NOTE: Lift keyboard to access IR/Sound Board
DIP Switch
Figure 5-3 I/O Address Setting (IR/Sound Board)
5-6 Troubleshooting Procedures