Compaq 1245 specifications Removing the System Board

Page 66

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

Removing the System Board

Electrostatic

Discharge

	Service	To remove the system board, complete
	Considerations	To remove the system board, complete
		the following steps:

	Cables and
	Cables and
	Connectors	1.	Prepare the computer for
		1.	Prepare the computer for

	Preparing the	disassembly.
	Computer for
	Disassembly	2.	Remove the palmrest cover with
		touch pad.

	Battery Pack
	Battery Pack


	Palmrest	3.	Remove the heatspreader.
	Cover with	3.	Remove the heatspreader.
	Cover with
	Touch Pad	4.	Remove the keyboard.
		4.	Remove the keyboard.

	Heatspreader
		5.	Remove the processor.

	Keyboard
	Keyboard


	Processor	6.	Remove the modem.
		6.	Remove the modem.

	Hard Drives
		7.	Remove the hard drive.

	CD Drive
	CD Drive


	Battery	8.	Remove the display panel assembly.
	Charger Board	8.	Remove the display panel assembly.
		9.	Remove the Upper CPU Cover.

	Modem


	Display Panel	10. Remove the battery charger board.
	Assembly

	Upper CPU	11. Remove the diskette drive.
	Cover
		12. Remove the CD drive.
	Speaker	12. Remove the CD drive.
	Assembly	13. Remove the fan.


	Diskette Drive


	Fan Assembly	14. Disconnect the speaker assembly
	System Board	cables.

	Dip Switch	Next Step
	Settings	Next Step
	Settings


	Memory
	Module

Image 66

Contents Maintenance & Service Guide Maintenance & Service Guide Symbols PrefaceCompaq Product DescriptionDisplay 12 HPA Processor Models & FeaturesBattery ES NiMH System Memory 32 MB 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 Hard Drives Capacity Per Drive Formatted Logical ConfigurationHard Drives Seek TimesRotational Speed 24× CD Drive DimensionsCD Drive Typical Transfer RateConnector Pin Assignments Conditioning a Battery Pack Battery Pack Operating TimeIncreasing Battery Pack Operating Time Disposing of a Used Battery PackTroubleshooting Follow the Preliminary StepsPreliminary Steps Run Computer CheckupProbable Cause Power-On Self Test PostRunning Post 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