Toshiba Tecra A2-S239 Maintenance Manual - Page 140

3 Tests and Diagnostics 3.13 Real Timer Test 3.13 Real Timer Test To execute the Real Timer Test, select 9 from the DIAGNOSTIC TEST MENU, press Enter and follow the directions on the screen. The real timer test contains subtests that test the computer's real timer functions. Move the highlight bar to the subtest you want to execute and press Enter. Subtest 01 Real time A new date and time can be input during this subtest. To execute the real time subtest follow these steps: Step 1: Select subtest 01 and the following message will appear: Current date : XX-XX-XXXX Current time : XX:XX:XX Enter new date: PRESS [Enter] KEY TO EXIT TEST Step 2: If the current date is not correct, input the correct date and press Enter. The date is updated and the following prompt will appear. If the current data is correct, press Enter. Enter new time : Step 3: If the current time is not correct, input the correct time in 24-hour format and press Enter. The time is updated. To enter ":", press Shift + ;. To exit this subtest, press Ctrl + Break. Subtest 02 Backup memory This subtest checks the following backup memories: Writes 1-bit of "on" data (01h through 80h) to address 0Eh through 7Fh Writes 1-bit of "off" data (FEh through 7Fh) to address 0Eh through 7Fh Writes the data pattern AAh and 55h to the address 0Eh to 7Fh Then the subtest reads and compares this data with the original data. 3-32 Satellite A50/TECRA A2 Maintenance Manual (960-478)