HP R3023AP, R3065US, R3070US, R3060US, R3050US, R3056RS, R3050EA, R3001 Grounding Equipment and Methods

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Removal and Replacement Preliminaries

4.6Grounding Equipment and Methods

Grounding equipment must include either a wrist strap or a foot strap at a grounded workstation.

When seated, wear a wrist strap connected to a grounded system. Wrist straps are flexible straps with a minimum of one megohm ±10% resistance in the ground cords. To provide proper ground, wear a strap snugly against the skin at all times. On grounded mats with banana-plug connectors, use alligator clips to connect a wrist strap.

When standing, use foot straps and a grounded floor mat. Foot straps (heel, toe, or boot straps) can be used at standing workstations and are compatible with most types of shoes or boots. On conductive floors or dissipative floor mats, use foot straps on both feet with a minimum of one megohm resistance between the operator and ground. To be effective, the conductive strips must be worn in contact with the skin.

Other grounding equipment recommended for use in preventing electrostatic damage includes:

Antistatic tape

Antistatic smocks, aprons, and sleeve protectors

Conductive bins and other assembly or soldering aids

Nonconductive foam

Conductive tabletop workstations with ground cords of one megohm resistance

Static-dissipative tables or floor mats with hard ties to the ground

Field service kits

Static awareness labels

Maintenance and Service Guide

4–5

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Contents Maintenance and Service Guide Page Contents Screw Listing Index Product Description Features External Components Front Components Component FunctionRight-Side Components Rear components Rear Panel Components Left-Side Components Wireless Accessories Wireless AccessoriesDesign Overview Troubleshooting Before Replacing PartsPower Problems and Solutions Problems and SolutionsProblem Possible Cause Solution External Device Problems and Solutions Illustrated Parts Catalog Serial Number LocationHP Notebook Expansion Base Major Components Spare Part Description NumberHP Notebook Expansion Base miscellaneous components Receiver Power cord Item Description NumberService Considerations Removal and Replacement PreliminariesTools Required Preventing Electrostatic Damage Plastic PartsPackaging and Transporting Precautions Workstation Precautions Grounding Equipment and Methods Typical Electrostatic Voltage Levels Static-Shielding MaterialsEvent 10% 40% 55% Material Use Voltage Protection LevelRemoval and Replacement Procedures Serial Number Disassembly Sequence Chart Disassembly Sequence Chart# of Screws Section Description RemovedPreparing the HP Notebook Expansion Base for Disassembly Base Plate Spare Part Number InformationUpper Chassis Removing the rear cover Disconnecting the cables from the system board Reverse the above procedure to install the upper chassis Power Supply Reverse the above procedure to install the power supply System Board Reverse the above procedure to install the system board Front Tray Cover Reverse the above procedure to install the front tray cover Back Panel Expansion Cable Speaker Assembly Reverse the above procedure to install the speaker assembly Front Case Specifications HP Notebook Expansion BasePower supply Internal AC AdapterConnector Pin Assignments Table A-1 RJ-45 Network InterfaceTable A-2 RJ-11 Modem Table A-3 Universal Serial BusTable A-4 Video Table A-5 Audio Line-OutTable A-6 Serial Table A-7 Pdif Audio Line-Out Table A-8Conductor Power Cord Set Power Cord Set RequirementsGeneral Requirements Conductor Power Cord Set Requirements Country-Specific RequirementsApplicable Note Country Accredited Agency NumberBSI Screw Listing Head Table C-1 Phillips PM2.5×17.0 ScrewColor Qty Length Thread Width Table C-2 Phillips PM2.0×6.0 Screw Table C-2 Phillips PM2.0×6.0 Screw Table C-2 Table C-4 HM5.0×9.0 Standoff Table C-5 Phillips PM2.0×4.0 Screw Table C-5 Phillips PM2.0x4.0 Screw Table C-5 Phillips PM2.0×4.0 Screw Table C-5 Phillips PM2.0×4.0 Screw Table C-5 Phillips PM2.0×4.0 Screw Table C-6 Phillips PM2.0×2.0 Screw Index Index Maintenance and Service Guide Index-3
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