Toshiba Tecra 730CDT, Maintenance Manual

Page: 85 / 230

730CDT 3-27
3.12 Real Timer Test
To execute the Real Timer Test, select 9 from the DIAGNOSTIC TEST menu, press Enter
and follow the directions as they are displayed on the screen. The Real Timer Test contains
three 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:
1. Select Subtest 01 and the following message displays:
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, enter the correct date at the "Enter new
date" prompt and press
Enter
. The following prompt displays:
Enter new time :
3. If the current time is not correct, enter the correct time using a 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 and 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
.