Dell Latitude CPi A-Series User Manual page 208

DMA Test
Tests for the presence of a DMA channel on the system chip set, and determines if the DMA controller
and the audio controller can exchange signals
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
The last three Audio subtests are interactive. In both the FM Sound Playback Test and the Analog Sound
Playback test, a series of musical tones is played through the computer's built-in speaker(s). A message on
the display asks if you hear the tones. Type y if you hear the tones; otherwise, type n.
The third interactive test, the Record and Playback Test, checks the computer's built-in microphone and
speaker(s). When prompted, press any key on the built-in keyboard and say your name in a normal tone of
voice.
NOTE: After you press the key, you have only a few seconds to speak your name.
When prompted again, hit any key on the built-in keyboard to play back your voice through the built-in
speaker(s). Type y if you hear your voice; otherwise, type n. If you press n, you are given another
opportunity to run the Record and Playback Test. When prompted, type y if you want to try the test again (for
instance, if you did not speak quickly enough after pressing a key to begin the test). Otherwise, press n.
Other Test Group
The Fan Control Test in the Other test group checks the function of the fan. The fan works with the air intake
on the computer as part of the automatic thermal management system.
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