Toshiba PORTEGE Z830 Satellite Z830 Maintenance Manual page 240

Tests and Diagnostics
3.34.6.12 KEYBOARD Test
1) Test content
The keyboard of PC is a test which judges whether it operates normally.
■Simple Mode / Detail Mode
The same operation is carried out whichever it chooses.
2) Test screen
The arrangement of a keyboard is displayed on the display of PC.
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PORTEGE Z830 Satellite Z830 Series Maintenance Manual (960-883)