4-10 Dell Latitude CP Reference and Troubleshooting GuideTable 4-2. Dell Diagnostics TestsTest Groups Subtests DescriptionRAM Quick TestComprehensive TestSecondary Cache TestTests the RAM.System Set CMOS Confidence TestDMA Controller TestReal-Time Clock TestSystem Speaker TestSystem Timers TestInterrupt Controller TestCoprocessor Calculation TestCoprocessor Error Exception TestPC Card Controller TestUSB Register TestUSB Memory Structure TestTests the system board’s support chips,DMA controller, computer timer,NVRAM, speaker controller, and, ifappropriate, the external cache and thethermal-control device.Tests the math coprocessor that is inter-nal to the microprocessor.Tests the PC Card controller on thesystem board.Tests the computer’s USB connector.Video Video Memory TestVideo Hardware TestText Mode Character TestText Mode Color TestText Mode Pages TestGraphics Mode TestColor Palettes TestSolid Colors TestTests the display by checking variousaspects of video output.Keyboard Keyboard Controller TestKeyboard Key Sequence TestKeyboard Interactive TestStuck Key TestTests the keyboard by checking thekeyboard controller and by finding keysthat stick or respond incorrectly.Mouse Mouse Test Tests the electronic pointing device(integrated touch pad, external serialmouse, or external PS/2 mouse).Diskette Drives Change Line TestSeek TestRead TestWrite TestTests a drive that uses removablediskettes. Also tests the associated con-trolling devices and important parts ofthe cabling.NOTE: For the full name of an abbreviation or acronym used in this table, see the Glossary in the online System User’s Guide.
