Dell OptiPlex Gn Diagnostics and Troubleshooting Guide (.pdf) - Page 64

• Interrupt Test Checks to see if the audio controller is generating an interrupt on the IRQ line configured for that controller • DMA Test Tests for the presence of a DMA channel on the system chip set, and determines if the DMA controller and audio controller can exchange signals • FIFO RAM Test Checks the read/write capabilities and status of the audio controller • Initial Reset Status Test Verifies the reset values of the extended registers on the audio controller • Internal Register Test Writes test patterns to the internal registers of the audio controller, then reads other registers to confirm that the patterns are correctly interpreted • Dual Channel Test Confirms the presence of a second DMA channel on the system chip set and determines if the DMA controller and audio controller can exchange signals on that second DMA channel • FM Sound Playback Test Tests whether the system can synthesize sounds and play them through the built-in speakers • Analog Sound Playback Test Tests whether the system can play sampled sounds through the built-in speakers • Record and Playback Test Checks the ability of the audio controller to generate a sampled sound from signals received from the built-in microphone Why Run an Audio Test? If you do not hear sounds from your built-in speakers when you expect to, it is possible that your operating system or sound application uses resource settings different from those of the audio controller in the computer. In the absence of an expected sound, first check the documentation that accompanied your operating system or sound application to see if the sound features are correctly configured to work with the computer. The default settings for the audio controller are: • DMA channel: 1 • IRQ line: 5 • Port address: 220h If necessary, change the resource settings in your operating system or sound application 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-in speaker(s), and make sure that the speaker volume has not been muted. Other Test Group The subtests in the Other Test Group check devices that are currently not covered by one of the other groups. Subtests The three subtests in the Other Test Group confirm the following functions: • ESM Firmware Status Checks to make sure the embedded server management (ESM) firmware was downloaded correctly and is operational • ESM Interface Test Checks the interface between the host and the ESM hardware to ensure all bits in the data port are working properly • ESM Sensor Check Verifies the current measurements of the ESM sensors 4-22 Diagnostics and Troubleshooting Guide