Troubleshooting Procedures 5-11
♦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.
5.4 Fault Isolation Using Diagnostics
PC-Doctor, supplied with the Extensa Series Notebooks, is a powerful diagnostics tool
that can help you determine the hardware configuration of a local or remote system,
benchmark its performance, analyze the performance of all subsystems, and perform
a suite of interactive and non-interactive tests on attached devices (such as printers,
joystick devices, VGA monitors, SCSI devices, CD-ROM drives). The test results are
stored in a log which can be printed out or saved in a disk file.

5.4.1 PC-Doctor (In DOS Mode or DOS W indow)

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 highlighted 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, allocating and using system memory,
IRQ and DMA use, what device drivers are installed, what COM and LPT ports are
assigned and what ports are available, identifying partitioning data for fixed disk
drive(s), determining the VGA setup information, reading the software interrupts/
interrupt vectors, etc.
Functionally, PC-Doctor includes the following:
♦Group of non-Interactive diagnostic tests that perform a non-destructive test
of the major hardware functions in the notebook (Processor, Memory, System
board, video section, serial and parallel ports (when loopback adapters are
installed), hard disk drive and floppy disk drive).
♦Group of Interactive tests (require operator input) for testing the keyboard,
video sections, sound subsystem, mouse, joystick, disk drive, printer
subsystem and the SCSI/CD-ROM Drive subsystems supported by the
docking station options.