Toshiba Tecra M5 Maintenance Manual page 170

3 Tests and Diagnostics
Subtest 01 Pressed key display
When you execute this subtest, the keyboard layout is drawn on the display as
shown below. When any key is pressed, the corresponding key on the screen
changes to the key character that was pressed. Holding a key down enables
the auto-repeat function that causes the key's display character to blink.
Press Del + Enter to end the test.
3-40 [CONFIDENTIAL]
3.20 ONLY ONE TEST
TECRA M5 Maintenance Manual (960-542)