Texas Instruments TravelMate 5000 Series User Reference Manual page 217

PC-Doctor Diagnostics
Note: External serial and parallel port testing requires
n
loopback plugs (not provided with this software).
Interactive Tests Menu
Interactive tests are diagnostics that need user interaction
to complete. Interactive tests include:
D-4 Diagnostics
All Tests - allows you to select which tests to run. You
can also specify special testing options. By pressing
F2, the following options are available:
Halt On Errors - interrupts testing if an error is
detected.
External Loopback - tests external loopback of
COM and LPT ports. You can select the type of
loopback adapter you want to use.
Pass Count - selects how many times tests are
repeated. The highest limit is 9999 times.
Test Logging - opens the Log Options menu that
lets you define how test results are printed or
stored to a file during testing. By default,
PC-Doctor produces a test result file at the end of
testing if an error was detected.
Switch LCD - lets you change your video output
to either the internal LCD, external monitor, or
simulscan mode. If your system does not support
simulscan, both the external monitor and the
built-in LCD screen go blank.
Cache Control - allows you to leave the level 1
and level 2 cache enabled during memory testing.
This assists in tracking down cache timing
issues.
Keyboard - tests the keyboard keys, LEDs, and repeat
rate