Toshiba PORTEGE R830 Maintenance Manual page 159

Tests and Diagnostics
Subtest 02 Pressed Key Display (Ten key): Not Used
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.
3-50 [CONFIDENTIAL])
IF TEST OK, Press [Dell][Enter]key
PORTEGE R830 Satellite R830 Series Maintenance Manual (960-880)
[ Ten key test]