Toshiba PORTG R300 User Manual

Page of 352
 
3  Tests and Diagnostics 
PORTEGE R300 Maintenance Manual (960-591) 
[CONFIDENTIAL] 
3-87 
Subtest 02 
Sine wave 
This subtest is executed by loading the COM file (ADSIN.COM). The 
program expands sine wave data table from 16KB to 64KB, and creates the 
play data. Then it transfers the data between the DMA and the CODEC to 
play the sine wave. (It sounds like a continuous beep). By using wave 
measurable devices such as an oscilloscope, the data can be measured as a 
sine wave. 
When the subtest is executed, the sine wave is played while expanding sine 
wave from 16KB to 64KB. 
The display returns to the Sound (Standard) test menu after the test ends. 
Subtest 03 
Line IN recording & play 
This subtest executes the same test as the subtest01 by recorded sound from 
the different port (Line-in port).  
For more details on the subtest, refer to the subtest01 Microphone recording & 
play.  
The display returns to the Sound (Standard) test menu after the test ends. 
3.29.2  Sound (Legacy) test 
To execute the Sound (Legacy) test, select 2 and press Enter.  
NOTE:  Sound (Legacy) test is not supported in this model.