Compaq 1245 specifications Preparing the Computer for Disassembly

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Maintenance & Service Guide

Presario 1200 Series

Model: 1245

Home Page Notice Preface Product Description Troubleshooting Illustrated Parts Catalog Removal & Replacement Procedures Specifications Pin Assignments Battery Pack Operations

Preparing the Computer for Disassembly

Electrostatic

Discharge

Service Considerations

Cables and

Connectors

Preparing the Computer for Disassembly

Battery Pack

Palmrest Cover with Touch Pad

Heatspreader

Keyboard

Processor

Hard Drives

CD Drive

Battery Charger

Board

Modem

Display Panel

Assembly

Upper CPU

Cover

Speaker

Assembly

Diskette Drive

Fan Assembly

System Board

Dip Switch

Settings

Memory Module

Before beginning removal and replacement procedures,

complete the following procedures:

1.Disconnect AC power and any external devices.

2.Remove the battery pack.

3.Remove any PC Cards.

WARNING: Metal objects can damage the battery pack as well as the battery contacts in the battery compartment. To prevent damage, do not allow metal objects to touch the battery contacts. Place only the battery pack for the Compaq Presario Model 1245 Portable Computer into the battery compartment. Do not force the battery pack into the bay if insertion does not occur easily.

CAUTION: Do not crush, puncture, or incinerate the battery pack. Do not open a battery pack, as this damages the pack, makes it unusable, and exposes potentially harmful battery components. There are no field-serviceable parts located inside the battery pack.

The Compaq Presario Model 1245 Portable Computer has several screws of various sizes which are not interchangeable. Care must be taken during

NOTE: reassembly to ensure that the correct screws are used in their correct location. During removal please keep respective screws with their associated sub- assembly.

Return to Removal & Replacement Procedures.

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Contents Maintenance & Service Guide Maintenance & Service Guide Symbols PrefaceCompaq Product DescriptionModels & Features Battery ES NiMH System Memory 32 MBDisplay 12 HPA Processor Hard Drive CD Drive 24× MAX ModemFront Panel Components Controls and LightsLeft Side Components Right Side Components Bottom of Unit Rear Connectors Power Management for Windows Power Management Settings Power Management PropertiesDisplay Properties Sleep Hibernation Mode Mode To Initiate To End IndicatorsRebooting After a Lockup Servicing Your Computer Full Off Mode Illustrated Parts Catalog Place cursor over each device to obtain its part number System UnitBoards Place cursor over each device to obtain its part numberDisplay Assembly Mass Storage Devices Place cursor over each device to obtain its part numberMiscellaneous Cables Kit Power Cord CablesMiscellaneous Hardware and Plastics Kit Miscellaneous Hardware and Plastics KitMiscellaneous Parts Documentation and Software DescriptionSpare Part Number Removal and Replacement Procedures Serial Number LocationElectrostatic Discharge Generating StaticService Considerations Cables and Connectors Select the desired illustrationPlastic Parts ZIF Connectors Ribbon cable position for the 3.2-GB hard drive Ribbon cable position for the CD drive Ribbon cable position for the diskette drive Back to Cables and Connectors Preparing the Computer for Disassembly Removing the Battery Pack To remove the battery pack, complete the following stepsReplacement Procedures Prepare the computer for disassembly Removing the Palmrest Cover with Touch PadWhen replacing the palmrest cover, ensure Return to Removal Removing the Heatspreader Removing the Keyboard Removing the Processor To replace the processor complete the following steps Maintenance & Service Guide Removing the Hard Drive Presario 1200 Series Models Replacement Procedures Removing the CD Drive Maintenance & Service Guide To replace the CD drive, reverse the previous procedures Removing the Battery Charger Board Removing the Modem To replace the modem, reverse the previous procedures Removing the Display Panel Assembly Maintenance & Service Guide Maintenance & Service Guide Maintenance & Service Guide When removing the display panel assembly Return to Removal Removing the Upper CPU Cover Removing the Speaker Assembly Fan Assembly System Board Dip Switch Settings Memory Module Removing the Diskette DriveReplacement Procedures Removing the Fan Assembly System Board Dip Switch Settings Memory ModuleTo replace the fan assembly, reverse the previous procedure Removing the System Board Remove three standoffs from the system board Maintenance & Service Guide Remove three screws from the system board To replace the system board, reverse the previous procedures Removing the Memory Module Memory ModuleReplacement Procedures Specifications Physical and EnvironmentalSystem Interrupts System InterruptsHardware System Function System DMA System DMAHardware DMA System Function Address Hex System Function Shipping Configuration System I/O AddressSystem I/O Address System Memory Catalog System Memory CatalogDisplay Memory Expansion Battery Pack EnergyEnvironmental Requirements Diskette Drive Logical Configuration Hard DrivesHard Drives Capacity Per Drive Formatted Seek Times24× CD Drive Dimensions CD DriveRotational Speed Typical Transfer RateConnector Pin Assignments Battery Pack Operating Time Increasing Battery Pack Operating TimeConditioning a Battery Pack Disposing of a Used Battery PackTroubleshooting Follow the Preliminary StepsPreliminary Steps Run Computer CheckupPower-On Self Test Post Running PostProbable Cause Recommended ActionCompaq Diagnostics Perform Computer Checkup TestView System Information Inspect Contacting Compaq Support Shipping PreparationClearing the Power-on Password Remove the Palmrest Cover with Touch PadDiagnostic Error Codes Select error codes by number or typeTroubleshooting Without Diagnostics Before Replacing PartsSolving Minor Problems Solving PC Card Problems Solving Power Problems