Toshiba A20-S259 Maintenance Manual - Page 130

3 Tests and Diagnostics 3.6 Keyboard Test Subtest 08 If the test ends successfully, OK is displayed. If nothing is displayed, there may be a problem with the USB port. Check the wraparound connection and repeat the test. To check only the USB mouse, follow the procedures below: Connect the USB mouse to the computer's USB connector. Next, set up the computer's hardware as follows: PERIPHERAL Pointing Devices = Simultaneous USB Legacy Emulation = Enabled Then, perform the Pointing Stick Diagnostic Test and make sure: • The cursor moves in the direction that you move the USB mouse. • The display reverses when you click the right button or left button To stop this test, press the two IPS buttons on the computer (connected to PJ10) at the same time. (You cannot use the USB mouse to stop the test.) CD-function key test When this subtest displays a message shown below, press [MODE] button for 3 seconds to release the key lock. Press [MODE Control] Button CAUTION: You cannot continue the test if the key lock is not released. When this subtest displays messages shown below, press the corresponding CDfunction key. NOTE: This subtest must be completed within 10 seconds. Press [play/pause] Button Press [stop] Button Press [rewind] Button Press [forward] Button 3-18 Satellite A20 Maintenance Manual (960-444)