Test Program for Field.
Satellite L20 Maintenance Manual(960-Q01)
129
3.14 MEMORY2 Test
To execute the Expansion Test select
11
from the Diagnostic Test Menu, press
Enter
and
follow the directions on the screen. The MEMORY2 Test contains four subtests that test the
computer's. 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
All one/All zero test
This subtest performs pseudorandom data read/write. The data consists of “all
ones”/”all zero” patterns produced by pseudorandom sequence generator. The
test checks address error.
FFFFFFFFFFFFFFFF0000000000000000
0000000000000000FFFFFFFFFFFFFFFF
Subtest 02
Walking 1/Walking 0 test (Left)
This subtest uses “running one”/”running zero” patterns. This test sequence
allows also to checking system bus in maximum noise conditions. The
following test sequence is written.
7FFF7FFF7FFF7FFF8000800080008000
BFFFBFFFBFFFBFFF4000400040004000
After all the memory being tested is filled with the pattern, it is read in
descanting direction and compared with reference data. As the memory is
read, the data is replaced with inverse test pattern. After all the memory is
read and replaced with inverted pattern, it is read in descanting direction and
compare with new reference data. As the memory is read, the data is replaced
with next pattern, which is like first one shifted to right.
Subtest 03
Walking 1/Walking 0 test (Right)
Tee test method is the same as Subtest2. However, the data to be used differs.
80008000800080007FFF7FFF7FFF7FFF
4000400040004000BFFFBFFFBFFFBFFF
Subtest 04
Walking 1/Walking 0 test (Left/ Right)
Содержание Satellite L20
Страница 12: ...Chapter 0 12 Satellite L20 Maintenance Manual 960 Q01 ...
Страница 13: ...Satellite L20 Maintenance Manual 960 Q01 1 i Chapter 1 Hardware Overview ...
Страница 14: ...1 ii Satellite L20 Maintenance Manual 960 Q01 1 Hardware Overview ...
Страница 18: ...Chatper 1 Hardware Overview 2 Satellite L20 Maintenance Manual 960 Q01 USB FDD supports 720KB and 1 44MB ...
Страница 41: ...Chapter 1 Hardware Overview Satellite L20 Maintenance Manual 960 Q01 25 ...
Страница 44: ...Chatper 1 Hardware Overview 28 Satellite L20 Maintenance Manual 960 Q01 ...
Страница 52: ...2 Troubleshooting 2 i EQUIUM M40 M45 Satellite M40 M45 Maintenance Manual 2 Chapter 2 Troubleshooting ...
Страница 79: ...2 Troubleshooting 2 14 Cooling Module 2 24 EQUIUM M40 M45 Satellite M40 M45 Maintenance Manual ...
Страница 80: ...Test Program for Field 80 Satellite L20 Maintenance Manual 960 Q01 Chapter 3 Diagnostic Programs ...
Страница 144: ...Satellite L20 Maintenance Manual 960 Q01 4 i Chapter 4 Replacement Procedures ...
Страница 145: ...Replacement Procedures 4 ii Satellite L20 Maintenance Manual 960 Q01 4 ...
Страница 167: ...Replacement Procedures Figure 4 6 Removing a memory module Satellite L20 Maintenance Manual 960 Q01 163 ...
Страница 178: ...Replacement Procedures 174 Satellite L20 Maintenance Manual 960 Q01 M2 5 6 0B FLAT BIND screw x1 ...
Страница 202: ...Satellite L20 Maintenance Manual 960 Q01 App i Appendices ...
Страница 203: ...App ii Satellite L20 Maintenance Manual 960 Q01 ...
Страница 213: ...Handling the LCD Module A 6 Satellite L20 Maintenance Manual 960 Q01 ...
Страница 262: ...Wiring Diagrams F 2 Satellite L20 Maintenance Manua 960 Q01 ...