Toshiba TECRA A11 Series Maintenance Manual page 157

Tests and Diagnostics
Subtest 02 Pressed Key Display (Ten key)
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 (Ten key) to end the test.
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[ Ten key test]
IF TEST OK, Press [Dell][Enter]key