HP 1242, 1234 manual Battery Pack Operating Time

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Presario 1200 Series

Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252

Before You Begin

 

Specifications

 

Parts Catalog

 

 

 

 

 

 

 

 

 

 

Removal Sequence

 

Troubleshooting

 

Battery Operations

 

 

 

 

 

 

 

 

 

Index

Product Description

 

Pin Assignments

 

 

 

 

 

 

Battery Pack Operating Time

This appendix covers the following information concerning battery pack operating time:

Increase battery pack operating time

Conditioning a battery pack

Disposal of a used battery pack

Increasing Battery Pack Operating Time

Battery pack operating time differs depending on several variables. To avoid unnecessary replacement, consider the following variables when determining how long a charged battery pack should last:

Power management settings

Hardware configuration

Software applications

Installed options

Display brightness

Hard drive usage

Changes in operating temperature

Type and number of installed PC Cards

NOTE: The power consumption requirements for PC Cards vary widely. Some cards drain the battery pack very rapidly.

Battery pack operating time can be increased by as much as 50 percent by controlling the energy required by the computer and the energy stored in the battery pack.

Minimizing the Energy Required

To minimize the energy required by the computer, follow these steps:

Set the power conservation levels in the Power Management utility to Maximum.

Customize the timeout value to work more efficiently with the applications. The amount of battery life depends on the values selected.

Maximizing the Energy Stored

To maximize the energy stored in the battery pack, follow these guidelines:

Condition the battery pack at least every 30 days to improve overall battery performance.

Keep a battery pack in the computer when using it with AC power to supply the battery pack with a constant trickle charge.

Store the battery pack in a cool, dry place when not in use.

Conditioning a Battery Pack

CAUTION: To avoid a loss of data, ensure that all data is saved before discharging a battery pack.

To condition a battery pack, complete the following steps:

1.Plug in the AC adapter and allow the battery to charge until the LED light on the display stops blinking. Your battery gauge may read 100 percent for a period of time before LED light on the display stops blinking. Do not unplug the AC adapter until the arrow disappears.

2.Unplug the AC adapter and allow the battery to drain until the computer reaches hibernation and turns itself off. Do not plug in the AC adapter during this process or you will need to restart with Step No. 1. You may use the computer while the battery is draining.

3.Your battery is re- conditioned.

4.Plug in the AC adapter and begin using the computer.

The table below shows the approximate battery pack charge times.

 

Approximate Battery Charge Time

 

Computer

On Line

Off Line

NiMH Battery Pack

4.0 hours premature termination

2:00 hrs

Li ion Battery Pack

4.5 hours premature termination

2:50 hrs

Disposal of a Used Battery Pack

In the interest of safeguarding our environment. Compaq Computer Corporation recommends that nickel metal hydride (NiMH) and lithium ion (Li ion) battery packs be recycled. Battery packs should be handled in accordance with country, state, province, or local regulations.

CAUTION: Never attempt to open or service a battery pack. Opening a battery pack not only damages the pack and makes it unusable, but also expose potentially harmful battery components.

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Contents Removal Sequence Before You BeginParts Catalog IndexIndex Symbols PrefaceProduct Description Specifications Parts CatalogProduct Description Models and Features AMD-K6 266 MMXModels and Features Front Bezel Lights Controls and LightsControls Lights Left Side Components Models Features Controls LightsLeft Side Components Card Diskette Eject Drive Lever Slot ButtonRight Side Components Models Features Controls Lights Left Side ComponentsBattery CD Drive Compartment Right Side ComponentsBottom Unit Rear Connectors Power Management For Windows Bottom of UnitBottom of Unit Memory Feet CompartmentRear Connectors Rear ConnectorsPower Management For Windows Rear Connectors Power Management for Windows Troubleshooting PostPreliminary Steps Power-On Self Test Post Running PostDiagnostic Error Codes View System Information Inspect Compaq DiagnosticsComputer Checkup Test AudioContacting Compaq Support Shipping PreparationTroubleshooting Without Diagnostics Before Replacing PartsSolving Minor Problems Solving Printer Problems Solving PC Card ProblemsSolving Power Problems Solving Touch Pad/Pointing Device ProblemsBattery Pack Operating Time Connector Pin Assignments Illustrated Parts Catalog System Unit System UnitSystem Unit BoardsBoards Display Assembly Display AssemblySystem Unit Boards Mass Storage Devices System Unit Boards Display AssemblyMass Storage Devices Mass Storage Devices Miscellaneous Cables KitMiscellaneous Cable Kit Cables Power CordCables Miscellaneous Hardware Plastics Kit Miscellaneous Hardware and Plastics KitsMiscellaneous Parts Documentation Software Miscellaneous Parts Miscellaneous PartsDocumentation Software Documentation Documentation and SoftwareInfo. Not Available QuickFind Part Number SuffixRemoval and Replacement Procedures Serial Number LocationElectrostatic Discharge Generating StaticService Considerations To service the computer, you need the followingCables Cables and ConnectorsRemoving a Cable from a ZIF Connector Select the desired illustrationZIF Connectors Maintenance & Service Guide Ribbon cable position for the CD drive Ribbon cable position for the diskette drive Back to Cables and Connectors Removing the Battery Pack Battery PackTo replace the battery Battery pack tabRemove the battery Previous proceduresRemoving the Palmrest Cover with Touch Pad Palmrest Cover with Touch PadBattery Operations Heatspreader Specifications Parts Catalog Removal SequenceRemoving the Heatspreader To remove the heatspreader, complete the following stepsKeyboard Removing the KeyboardTo remove the keyboard, complete the following steps Cable from the ZIF Connector onDisconnect the flex To replaceRemoving the Processor To remove the processor, complete the following stepsTo replace the processor complete the following steps Removing the 3.2-GB, 4.1-GB, and 6.4-GB Hard Drives Hard DrivesHard drive Disconnect the hardDrive data cable from Remove fromComplete the following To remove the hardDrive mounting bracket StepsRemoving the CD Drive Open the CD drive tray using a small paper clip Drive and remove Disconnect the CDDrive cable from the CD CD drive fromRemoving the Battery Charger Board Battery Charger BoardRemoving the Modem Modem DisconnectModem cable from To replace the modemRemoving the Display Panel Assembly Display Panel AssemblyCable attached to Display panel assemblyFrom the ZIF connector On the system boardBacklight cable attached Assembly fromTo the display panel Display panel Assembly and removeSupport the back Two screws from eachWhen removing Panel assembly withPanel assembly, reverse Assembly flexRemoving the Upper CPU Cover Upper CPU CoverRemoving the Speaker Assembly Speaker AssemblyDiskette Drive Fan Assembly System Board Dip Switch Settings Memory ModuleRemoving the Diskette Drive To remove the diskette drive, complete the following stepsBoard Diskette drive dataCable from the system To replace the disketteFan Assembly Removing the Fan AssemblySystem Board Dip Switch Settings Memory Module Fan assembly Assembly, reversePrevious procedure To remove the fanTo remove the system board, complete the following steps Dip Switch Settings Memory ModuleRemoving the System Board System BoardRemove three Standoffs fromMounting rails Remove two screwsFrom the CD Drive Remove the mountingScrews from the system Up the right side of the system board and pull Pull the Pcmcia eject lever out straight, liftForward to remove the system board from Specifications Removing the Memory Module Memory ModuleModule and unplug Pull side levers toRelease the memory Memory module fromIndex Presario 1200 SeriesStand-Alone Battery Pack Power Requirements DimensionsWeight AC Power RequirementsSystem Interrupts Hardware IRQ System FunctionAddress Hex System Function Shipping Configuration Hardware DMA System FunctionSystem Memory Catalog Memory Address System FunctionContrast Ratio Display DimensionsTotal Power Consumption BrightnessNumber of Read/Write Heads Memory Expansion System Memory Expansion Board Total MemoryCylinders High/Low Capacity Per Drive Information not availableTransfer Rate Logical ConfigurationSeek Times Capacity Per DriveNickel Metal Hydride NiMH Lithium Ion Li ion Dimensions Access TimeAverage Random Access Time Spin Up time Weight Battery Pack Operating Time Energy
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1242, 1234 specifications

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