Toshiba Satellite Pro A500 series, Service Manual

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3.6 Memory Test 3 Diagnostic Programs
3.6 Memory Test
This test module is to check whether the memory chip works normally.
Subtest 01 BIOS ROM
This test item is to check the validity of BIOS ROM that includes two sub-items --
ROM Read and ROM Write Protection. ROM Read is to check whether BIOS
ROM could be correctly read out, ROM Write Protect is to check whether BIOS
ROM is write-protected.
Subtest 02 Parity
This test item is to check whether the parity checkout error could happen through
writing and reading memory. Below is the parameter setting dialog window.
Test Option:
Choose the Memory part to take the test– Base Memory or
Extended Memory.
Extended Memory Test Range:
Specify the test coverage range of
Extended Memory. If user chooses Total Size, it means that the whole
Extended Memory will be tested. Although user can input the parameter
into other select box, but the selected result is invalid. If user chooses
Special Size, the test of Extended Memory will be taken according to the
coverage range that user chooses or time.
Extended Memory Start Address (MB) & Extended Memory End
Address (MB):
Set the range of extended memory that is to be tested, the
test coverage would be based on the setting and the value in ‘Percent (%)
mentioned at below.
Satellite A500 Maintenance Manual
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