IBM Z50 manual Handling Electrostatic Discharge-Sensitive Devices, Grounding Requirements

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Handling Electrostatic

Discharge-Sensitive Devices

Any computer part containing transistors or integrated circuits (Ics) should be considered sensitive to electrostatic discharge (ESD). ESD damage can occur when there is a difference in charge between objects. Protect against ESD damage by equalizing the charge so that the machine, the part, the work mat, and the person handling the part are all at the same charge.

Notes

1.Use product-specific ESD procedures when they exceed the requirements noted here.

2.Make sure that the ESD protective devices you use have been certified (ISO 9000) as fully effective.

When handling ESD-sensitive parts:

Keep the parts in protective packages until they are inserted into the product.

Avoid contact with other people.

Wear a grounded wrist strap against your skin to eliminate static on your body. Approved static straps protect the user from high-operating voltages (110V).

Prevent the part from touching your clothing. Most clothing is insulative and retains a charge even when you are wearing a wrist strap.

Use the black side of a grounded work mat to provide a static-free work surface. The mat is especially useful when handling ESD-sensitive devices. Select a grounding system, such as those listed below, to provide protection that meets the specific service requirement.

Note

The use of a grounding system is desirable but not required to protect against ESD damage.

-Attach the ESD ground clip to any frame ground, ground braid, or green-wire ground.

-Use an ESD common ground or reference point when working on a double-insulated or battery-operated system. You can use coax or connector-outside shells on these systems.

-Use the round ground-prong of the AC plug on AC-operated computers.

Grounding Requirements

Electrical grounding of the computer is required for operator safety and correct system function. Proper grounding of the electrical outlet can be verified by a certified electrician.

xvi IBM WorkPad z50, Mobile Companion xvi

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Contents March First Edition March About This Manual Contents Vi IBM WorkPad z50, Mobile Companion Important Service Information FRU Replacement StrategyBefore Replacing Parts Safety Notice Safety Notices Multi-lingual TranslationsSafety Notice IBM WorkPad z50, Mobile Companion Safety Notice General Safety Safety InformationElectrical Safety Use caution do not become a victim yourself Switch off power Safety Inspection GuideCheck for worn, frayed, or pinched cables Grounding Requirements Handling Electrostatic Discharge-Sensitive DevicesWorkPad z50 Mobile Companion 2608 Read This First Torque Driver Screw Tightening InformationPlastic to Plastic Logic card to PlasticFollowing is not covered under warranty Page Feature Product OverviewDescription Checkout Guide Symptoms Verified Refer ToAudio Checkout Memory Checkout Keyboard CheckoutModem Checkout Power Systems CheckoutPin Voltage V dc 11.1 Ground Terminal Voltage V dcOptional Dry Cell Battery Checkout If the optional Dry Backup Battery Checkout Nonrechargeable Battery Calibration ApplicationROM Card Checkout TrackPoint Checkout Cradle CheckoutExternal Monitor Self-Test IBM WorkPad z50, Mobile Companion ROM card Installing the ROM/DRAM CardHandling a Screwdriver Removing the ROM/DRAM CardRemoving the Dram ROM Cards Brightness/Contrast Buttons CheckoutPower Management Features Full Power ModeSuspend Mode Symptom-to-FRU Index Symptom / ErrorFRU / Action in Sequence LED board Function-Related Symptoms Indicator-Related SymptomsInfrared-Related Symptoms Symptom / Error FRU / Action in Sequence Keyboard- or TrackPoint-Related SymptomsPeripheral Device Related Symptoms Power-Related SymptomsOther Symptoms Undetermined Problems Intermittent ProblemsRunning the Diagnostics PC Card Slot TestTool Name Color Related Service ProceduresStatus Indicators and Control Buttons IndicatorKey Application Launching Key AssignmentsRemoving and Replacing Defective FRUs Safety Notice 1 Translation onSafety Notice 2 Translation on Safety Notice 6 Translation onPage Important Notice Screw Screw Type HeadLength Unplugging and Plugging Flexible Cables Removal reference Backup Batteries Step Size Quantity M2.5 Color Black Torque Kgcm Length 1020 ROM/DRAM CardWorkPad z50 Mobile Companion Battery Pack Keyboard Assembly Bottom Cover WorkPad z50 Mobile Companion Step Size Quantity M2.0 Color Torque Kgcm Length MainboardLCD Bezel LCD Unit Inverter Card and LCD Panel Step Size Quantity Color M2.5 Hex Torque Kgcm Length FPC AssemblyMicrophone SpeakerAudio Ports PC Card Slot AssemblyWorkPad z50 Mobile Companion 1160 RJ-11 Assembly Hardware Button Board Top Cover Locations Front Right View Right View Left ViewBottom View Rear ViewSystem Unit Parts Listing System Unit FRU List LCD Unit Parts List CRU For 3-pin power cords Power CordIBM TrademarksIBM