Dell Latitude 5290 Owner's Manual

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Dell Latitude 5290 Owner's Manual Manual pdf 3 page image

Working on your computerTopics:• Safety precautions• Before working inside your computer• After working inside your computerSafety precautionsThe safety precautions chapter details the primary steps to be taken before performing any disassembly instructions.Observe the following safety precautions before you perform any installation or break/fix procedures involving disassembly or reassembly:• Turn off the system and all attached peripherals.• Disconnect the system and all attached peripherals from AC power.• Disconnect all network cables, telephone, and telecommunications lines from the system.• Use an ESD field service kit when working inside any notebook to avoid electrostatic discharge (ESD) damage.• After removing any system component, carefully place the removed component on an anti-static mat.• Wear shoes with non-conductive rubber soles to reduce the chance of getting electrocuted.Standby powerDell products with standby power must be unplugged before you open the case. Systems that incorporate standby power are essentiallypowered while turned off. The internal power enables the system to be remotely turned on (wake on LAN) and suspended into a sleepmode and has other advanced power management features.Unplugging, pressing and holding the power button for 15 seconds should discharge residual power in the system board, notebooksBondingBonding is a method for connecting two or more grounding conductors to the same electrical potential. This is done through the use of afield service electrostatic discharge (ESD) kit. When connecting a bonding wire, ensure that it is connected to bare metal and never to apainted or non-metal surface. The wrist strap should be secure and in full contact with your skin, and ensure that you remove all jewelrysuch as watches, bracelets, or rings prior to bonding yourself and the equipment.Electrostatic discharge — ESD protectionESD is a major concern when you handle electronic components, especially sensitive components such as expansion cards, processors,memory DIMMs, and system boards. Very slight charges can damage circuits in ways that may not be obvious, such as intermittentproblems or a shortened product life span. As the industry pushes for lower power requirements and increased density, ESD protection is anincreasing concern.Due to the increased density of semiconductors used in recent Dell products, the sensitivity to static damage is now higher than in previousDell products. For this reason, some previously approved methods of handling parts are no longer applicable.1Working on your computer 3