Toshiba PORTEGE R400 Maintenance Manual page 155

Subtest 3 GP Button
This subtest checks if the buttons in the following figure work properly.
The following message appears in the display.
"GP-Button test"
Press Cross Function button. Then the following message appears in the
display.
"GP-Button test"
Press Escape/Rotation button. Then the following message appears in the
display.
"GP-Button test"
Press Windows security button. Then the following message appears in the
display.
"GP-Button test"
Press Windows Mail button. If the test ends successfully, the screen returns to
the ONLY ONE TEST menu automatically.
PORTEGE R400 Maintenance Manual (960-623)
3 Tests and Diagnostics
[CONFIDENTIAL] 3-43