IBM Z50 manual Important Service Information, FRU Replacement Strategy, Before Replacing Parts

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Introduction

Important Service Information

Important

Software fixes are customer installable. Such fixes are located on the PC Company Bulletin Board Service (BBS). The direct line for modem connection is 919-557- 0001 or tieline 255-0001 (IBM internal phone number).

Advise customers to contact the PC Company HelpCenter at 800-722-2227 if they need assistance in obtaining or installing software fixes.

Customers in Canada should call IBM HelpPC at 800-565- 3344 for assistance or down-load information. The Canadian BBS phone numbers are:

Montreal 515-938-3022

Toronto 905-316-4255

Vancouver 604-664-6464

Winnipeg 204-934-2735

FRU Replacement Strategy

Before Replacing Parts

Ensure that all software fixes are installed prior to replacing any FRUs listed in this manual.

Use the following strategy to prevent unnecessary FRU replacement and service expense:

If you are instructed to replace a FRU and that does not correct the problem, reinstall the original FRU before you continue.

Some computers have both a processor board and a mainboard. If you are instructed to replace either the processor board or the mainboard, and the first board that you replaced does not correct the problem, reinstall the original board, and then replace the other (processor or system) board.

If an adapter or device consists of more than one FRU, an error code may be caused by any of the FRUs. Before replacing the adapter or device, remove the FRUs, one by one, to see if the symptoms change. Replace only the faulty FRU.

© Copyright IBM Corp. 1998

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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 Notices Multi-lingual Translations Safety NoticeSafety Notice IBM WorkPad z50, Mobile Companion Safety Notice Safety Information General SafetyElectrical Safety Safety Inspection Guide Use caution do not become a victim yourself Switch off powerCheck for worn, frayed, or pinched cables Handling Electrostatic Discharge-Sensitive Devices Grounding RequirementsWorkPad z50 Mobile Companion 2608 Read This First Logic card to Plastic Screw Tightening InformationPlastic to Plastic Torque DriverFollowing is not covered under warranty Page Feature Product OverviewDescription Symptoms Verified Refer To Checkout GuideAudio Checkout Keyboard Checkout Memory CheckoutPower Systems Checkout Modem CheckoutPin Voltage V dc Terminal Voltage V dc 11.1 GroundOptional Dry Cell Battery Checkout If the optional Dry Battery Calibration Application Backup Battery Checkout NonrechargeableROM Card Checkout TrackPoint Checkout Cradle CheckoutExternal Monitor Self-Test IBM WorkPad z50, Mobile Companion Installing the ROM/DRAM Card ROM cardRemoving the ROM/DRAM Card Handling a ScrewdriverBrightness/Contrast Buttons Checkout Removing the Dram ROM CardsPower 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 Keyboard- or TrackPoint-Related Symptoms Symptom / Error FRU / Action in SequencePeripheral Device Related Symptoms Power-Related SymptomsOther Symptoms Intermittent Problems Undetermined ProblemsRunning the Diagnostics PC Card Slot TestTool Name Indicator Related Service ProceduresStatus Indicators and Control Buttons ColorApplication Launching Key Assignments KeySafety Notice 6 Translation on Safety Notice 1 Translation onSafety Notice 2 Translation on Removing and Replacing Defective FRUsPage Important Notice Screw Screw Type HeadLength Unplugging and Plugging Flexible Cables Removal reference Backup Batteries 1020 ROM/DRAM Card Step Size Quantity M2.5 Color Black Torque Kgcm LengthWorkPad z50 Mobile Companion Battery Pack Keyboard Assembly Bottom Cover WorkPad z50 Mobile Companion Mainboard Step Size Quantity M2.0 Color Torque Kgcm LengthLCD Bezel LCD Unit Inverter Card and LCD Panel FPC Assembly Step Size Quantity Color M2.5 Hex Torque Kgcm LengthSpeaker MicrophonePC Card Slot Assembly Audio PortsWorkPad z50 Mobile Companion 1160 RJ-11 Assembly Hardware Button Board Top Cover Locations Front Right View Left View Right ViewRear View Bottom ViewSystem Unit Parts Listing System Unit FRU List LCD Unit Parts List CRU Power Cord For 3-pin power cordsTrademarks IBMIBM