Toshiba libretto U100 Series, Maintenance Manual

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3 Tests and Diagnostics 3.14 Real Timer Test
3-30 [CONFIDENTIAL] libretto U100 Maintenance Manual (960-520)
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.