Dell 6100 User Manual

Also see for 6100: Rack installation Supplemental guide Hardware guide Service manual Installation and troubleshooting guide

Contents

Dell 6100 User Manual Manual pdf 96 page image

C-4 Dell PowerEdge 6100/200 System User’s Guide• Keep all diskettes in a closed diskette box when notin use.• Close windows and outside doors to keep out air-borne particles.CorrosionThe oil from a person’s fingers or prolonged exposure tohigh temperature or humidity can corrode the gold-platededge connectors and pin connectors on various devices inthe computer. This corrosion on computer connectors is agradual process that can eventually lead to intermittentfailures of electrical circuits.To prevent corrosion, you should avoid touching contactson boards and cards. Protecting the system from corro-sive elements is especially important in moist and saltyenvironments, which tend to promote corrosion. Also, asa further deterrent to corrosion, the system should not beused in extreme temperatures, as explained in “Tempera-ture” discussed earlier in this section.ESDESD results from the buildup of static electricity on thehuman body and certain other objects. This static elec-tricity is often produced by simple movements such aswalking across a carpet. ESD is a discharge of a staticelectrical charge, which occurs when a person whosebody contains such a charge touches a component in thecomputer. This static discharge can cause components,especially chips, to fail. ESD is a problem particularly indry environments where the relative humidity is below50 percent. To reduce the effects of ESD, you shouldobserve the following guidelines:• When working inside the computer, wear a wristgrounding strap. If a wrist grounding strap isunavailable, touch an unpainted metal surface on thechassis periodically to neutralize any static charge.• If at all possible, stand on a concrete floor whileworking inside the computer.• Use an antistatic floor mat when working inside thecomputer.• If it is necessary to work in a carpeted area, spray thecarpet with an antistatic spray and allow it to drybefore beginning to work inside the computer.• Keep components in their antistatic packaging untilthey are installed.• Avoid wearing clothing made of wool or syntheticmaterials.Electromagnetic and Radio FrequencyInterferenceElectromagnetic interference (EMI) and radio frequencyinterference (RFI) from a computer can adversely affectdevices such as radio and television (TV) receivers oper-ating near the computer. Radio frequencies emanatingfrom a computer system can also interfere with cordlessand low-power telephones. Conversely, RFI fromhigh-power telephones can cause spurious characters toappear on the system’s monitor screen.RFI is defined as any EMI with a frequency above10 kilohertz (kHz). This type of interference can travelfrom the computer to other devices through the alternatingcurrent (AC) power cable and power source or through theair like transmitted radio waves. The Federal Communica-tions Commission (FCC) publishes specific regulations tolimit the amount of EMI and RFI emitted by computingequipment. Each Dell system meets these FCCregulations.To reduce the possibility of EMI and RFI, follow theseguidelines:• Operate the system only with the computer coverinstalled.• Ensure that all expansion slots are covered either bya card-mounting bracket or by a metal filler bracketand that all drive bays have a drive and/or a metalinsert installed. These brackets and metal inserts areavailable from Dell.• Ensure that the screws on all peripheral cable con-nectors are securely fastened to their correspondingconnectors on the back of the computer.• Always use shielded cables with metal connectorshells for attaching peripherals to the computer.To prevent the possibility of RFI from a computer affect-ing TV reception, follow these guidelines:• Keep any TV set at least 6 ft away from the com-puter system.• Use cable TV when possible.