3-16 Dell Latitude CP Reference and Troubleshooting GuideTroubleshooting ProceduresThis section provides troubleshooting procedures forcomponents inside your computer (such as a memorymodule) and for external devices that connect to yourcomputer (such as an external monitor). Before perform-ing any of the procedures in this section, see “BasicChecks” found at the beginning of this chapter and read thesafety instructions at the front of this guide. Then perform theappropriate troubleshooting procedure for the component orequipment that is malfunctioning.NOTE: When you see the question “Is the problemresolved?” in a troubleshooting procedure, perform the opera-tion that caused the problem to see if the problem still occurs.Many of the following procedures refer to the power,drive access, and battery indicators (Figure 3.5)Figure 3-5. Power, Drive Access, and BatteryIndicatorsTable 3-7. I/O Memory MapAddress Device0000–001F DMA controller #10020–003F Interrupt controller #10040–005F System timers0060–006F Keyboard controller0070–007F RTC and NMI enable0080–009F DMA page registers00A0–00BF Interrupt controller #200C0–00DF DMA controller #200F0–00FF Math coprocessor0170–0177 CD-ROM controller01F0–01F7 Hard-disk drive controller0210–0217 Audio controller0220–022F Audio controller0270–0277 Fast IR0376–0376 IDE controller0378–037F LPT10388–038B Audio controller038B–03BB VGA03C0–03DF VGA03E0–03E1 PC Card controller03E8–03EF Fast IR03F0–03F7 Diskette controller03F8–03FF COM10530–0537 Audio controllerNOTE: For the full name of an abbreviation or acronym used inthis table, see the Glossary in the online System User’s Guide.0778–077B ECP registersECE0–ECFF USB controllerFFA0–FFAF PCI-IDE bus registersNOTE: For the full name of an abbreviation or acronym used inthis table, see the Glossary in the online System User’s Guide.Table 3-7. I/O Memory Map (continued)Address Devicedrive access indicatorpower indicator battery indicator
