Toshiba PRO L600 Manual Do Utilizador

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Test Program for Field. 
Satellite L600/L640/L645, Satellite Pro L600/Pro L640/Pro L645 Maintenance Manual (960-Q08)
 
 
3.5  Memory Test 
To execute the Memory Test select 02 from the Diagnostic Test Menu, press Enter and 
follow the directions on the screen. The Memory Test contains five subtests that test the 
computer’s memory. Move the highlight bar to the subtest you want to execute and press 
Enter
 
NOTE: If NO is selected for Test Loop on the Test Parameter menu, the Test Status 
screen displays while the test is executing. When the test is complete the Memory Test 
menu displays.  
If YES is selected for Test Loop on the Test Parameter menu, the Test Status screen 
displays while the test is executing. Press Ctrl + break to return to the Memory Test menu.
 
 
Subtest 01 
Conventional Memory 
This subtest first writes test data patterns to conventional memory (0 to 640 
KB), then reads the new data and compares the result with the original data 
patterns.  
If a compare error occurs, the write data, read data, and test address display on 
the screen. Addresses are displayed in 4KB increments during the test. 
Test Process:   
 
1.  Byte Enable Test 
One bit write/ 8 bit read” is executed and the new data is compared 
with the original data.  
Test data = CCAA5533H, 80000000H 
 
2.  Byte Enable Test 
“One bit write/16 bit read” is executed and the new data is compared 
with the original data.  
Test data = CCAA5533H, 80000000H 
 
3.  Data bus test 
“One bit write/16 bit read” is executed and the new data is compared 
with the original data.  
Test data = 1H, 2H, 4H, 8H, 10H, through 80000000H. 
 
4.  Fixed data test 
“16 bit write/ 16 bit read” is executed and the new data is compared 
to the original data.  
Test data = FFFFFFFFH, 00000000H, 80018001H