Toshiba A20-S259 Maintenance Manual - Page 128

3 Tests and Diagnostics 3.6 Keyboard Test Subtest 02 Subtest 04 Pressed Key Code Display When a key is pressed, the scan code, character code, and key top name are displayed on the screen in the format shown below. The Ins, Caps Lock, Num Lock, Scroll Lock, Alt, Ctrl, Left Shift, and Right Shift keys are displayed in reverse screen mode when pressed. The scan codes, character codes, and key top names are shown in Appendix D. KEYBOARD TEST IN PROGRESS 302000 Scan code = Character code = Keytop = Ins Lock Caps Lock Num Lock Scroll Lock Alt Ctrl Left Shift Right Shift PRESS [Enter] KEY Touch Pad This Subtest checks the functions of the touch pad as shown below. A) Touch Pad pressure sensing direction and parameter. B) Touch Pad switch function check. This test reports the pointing stick motion response from the touch pad and touch pad switch. When the touch pad is pressed towards the upper left, the display changes according to the following illustration. If a touch pad switch is pressed, the (1) or (2) highlights. The parameters appear on the upper right of the display. To exit this subtest, press the two touch pad switches. 3-16 Satellite A20 Maintenance Manual (960-444)