Toshiba Portege R500 Maintenance Manual - Page 141

3.14 Real Timer Test 3 Tests and Diagnostics 3 3.14 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. 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: 1. Select subtest 01 and the following messages will appear: Current date : XX-XX-XXXX Current time : XX:XX:XX Enter new date: PRESS [ENTER] KEY TO EXIT TEST 2. If the current date is not correct, input the correct date at the "Enter new date" prompt and press Enter. 3. The following messages will appear: Current date : XX-XX-XXXX Current time : XX:XX:XX Enter new time: PRESS [ENTER] KEY TO EXIT TEST 4. If the current time is not correct, input the correct time in 24-hour format. To enter ":", press Shift + ;. The time is updated. To exit the test, press Enter. 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. PORTEGE R500 Maintenance Manual (960-634) [CONFIDENTIAL] 3-29