Toshiba PORTEGE M780 Maintenance Manual page 295

3.35.6.7
1) Real time
This subtest sets and displays the calendar or clock function.
2) Backup memory
This subtest writes the data for 1bit ON (01, 02, 04...80h) and 1bit OFF (FE, FB, FB...7Fh)
and AAh, 55h to 114 bytes of addresses from 0E to 7Fh, reads the written data and compares
the result with the original data.
3) Real time carry
Set the constant value as below and check carry of the timer.
Month Date Year
12 - 31 - 2008
PORTEGE M780 Maintenance Manual (960-809)
Downloaded from LpManual.com Manuals
Real timer test
Hour Min. Sec.
23 : 59 : 58
Tests and Diagnostics
[CONFIDENTIAL] 3-183