Toshiba T2100 Series, Maintenance Manual

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3-30 T2100 Series
3.12 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 three subtests that test
the T2100/T2105 Series 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:
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
2. If the current date is not correct, input the correct date at the “Enter new
date” prompt and press
Enter
. The following prompt will appear:
Enter new time :
3. If the current time is not correct, input the correct time in 24-hour format.
Pressing
Enter
toggles between the time and the date. To exit, press
Ctrl +
Break .
Subtest 02 Backup Memory
This subtest performs the following backup memory check:
❑
Writes 1-bit of “on” data to address 01h through 80h
❑
Writes 1-bit of “off” data to address 0Eh through 80h
❑
Writes the data pattern AAh through 55h to the RTC 114-byte memory
(address 0Eh to 7Fh)
The subtest then reads and compares this data with the original data.
To exit, press
Ctrl + Break
.