Toshiba satellite a20 series User Manual

To execute the System Test select 

 from the DIAGNOSTIC TEST MENU, press 

 and 

follow the directions on the screen. Move the highlight bar to the subtest you want to execute 
and press 

Subtest 01 

ROM Checksum 

This subtest executes a checksum test of the BIOS ROM on the System 
Board. 

Subtest 02 

Thermister Check 

This subtest reads the status (normal/open/short) of the [Thermister connect 
check] of the PS micon. When it is not normal, an error message is displayed. 
When it is normal, the display returns to the main menu. 

Subtest 04 

CPU Fan On/Off 

This subtest checks CPU fan operation using the on/off command. The 
following message will appear when this subtest is executed. Make sure the 
fan does not rotate and press 

Test CPU Fan Revolution 0000RPM Start 

The following message will appear. Make sure the fan rotates at high speed 
and press 

Test CPU Fan Revolution LEVEL 5 speed start 

Subtest 05 

2nd Fan On/Off 

This subtest checks 2nd fan operation using the on/off command. The 
following message will appear when this subtest is executed. Make sure the 
fan does not rotate and press 

Test 2nd Fan Revolution 0000RPM Start 

The following message will appear. Make sure the fan rotates at high speed 
and press 

Test 2nd Fan Revolution LEVEL 5 speed start 

Subtest 06 

Quick charge 

This subtest checks the status for the quick charge.