Dell OptiPlex Gn Service Manual

Also see for Optiplex gn+: Troubleshooting guide Service manual Reference and installation guide

Dell OptiPlex Gn Service Manual Manual pdf 13 page image

System Overview 1-1Chapter 1System OverviewThe Dell ® OptiPlex® Gn and Gn+, and the Dell OptiPlex Gn and Gn+ withEnhanced Manageability (EM), are high-speed, upgradable, expandable com-puters. (The name Dell OptiPlex Gn and Gn+ will be used to refer to bothversions, unless otherwise indicated.) They are available in three sizes: a low-profile desktop computer, a midsize desktop computer, and a mini towercomputer. Chapters 1 through 3 and Appendix A contain information thatapplies to all models of the Dell OptiPlex Gn and Gn+ computers. Chapters 4, 5,and 6 are chassis-specific.The Dell OptiPlex Gn and Gn+ computers use the Intel ® Pentium® micro-processor with MMX™ technology. These Dell computers incorporate thehigh-performance PCI local bus as well as the ISA expansion bus. These busesare built into the system board, which also integrates the microprocessor, mem-ory controller, hard-disk drive controller, video controller, and other elements ofthe basic computer.The microprocessor for the OptiPlex Gn and Gn+ computers is installed in atype 7 ZIF socket, which allows the computer to be upgraded when fastermicroprocessors become available.The Pentium microprocessor contains a built-in clock multiplier circuit, whichincreases the internal operating frequency to a multiple of the system clock fre-quency, which is 66 MHz.The microprocessors for each of these computers and their operating frequen-cies are as follows:• Dell OptiPlex Gn and Gn+ 166 computers — 166-MHz Pentium micropro-cessor with MMX technology• Dell OptiPlex Gn and Gn+ 200 computers — 200-MHz Pentium micropro-cessor with MMX technology• Dell OptiPlex Gn and Gn+ 233 computers — 233-MHz Pentium micropro-cessor with MMX technology