Dell Inspiron 7000 Reference And Troubleshooting Manual

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Dell Inspiron 7000 Reference And Troubleshooting Manual Manual pdf 106 page image

4-26 Dell Inspiron 7000 Reference and Troubleshooting Guide$XGLR7HVW*URXS The subtests in the Audio test group check the functions of the audio controller andthe computer’s recording and playback features.:K\5XQDQ$XGLR7HVW"If you do not hear sounds from your built-in speakers when you expect to, it is possi-ble that your operating system or sound application uses resource settings differentthan those of the audio controller in the computer. In the absence of an expectedsound, first check the documentation that accompanied your operating system orsound application to see if the sound features are correctly configured to work withthe computer. The default resource settings for the audio controller are:á DMA channel: 1á IRQ line: 5á Port address: 220hIf necessary, change the resource settings in your operating system or sound applica-tion to match these default settings.If you still do not hear sound when you expect to, run the Audio test group.NOTE: Before running the Audio test group, make sure to enable the built-inspeaker(s), and make sure that the speaker volume has not been muted.6XEWHVWVThe six subtests in the Audio test group confirm the following functions:á M2 Timer TestTests the timing of audio streams from the wave processor.á M2 IRQ Channel TestChecks whether the audio controller is generating an interrupt on the IRQ lineconfigured for that controller.á M2 Sigma RAM TestTests the data transfer between the wave processor and the system chip set.á M2 Control RAM TestTests individual audio channels.á M2 WaveCache TestTests the data transfer between the audio controller and cache memory.