HP 2506AT, 2500, 2186AF If the battery does not charge, If the notebook has a short operating time

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Troubleshooting and Maintenance

Troubleshooting Your Notebook

If the battery does not charge

•Make sure the AC adapter is fully plugged into the power source and the notebook, and that the light on the adapter is on.

•If you’re using a power strip, remove the AC adapter from the power strip and plug it directly into a wall outlet.

•Make sure the battery is fully installed and locked in place.

•Make sure you’re using only the AC adapter included with your notebook (or other approved adapter that meets the power requirements of the notebook). Do not use a 60-watt, 3.16-amp adapter.

•Move the notebook away from any nearby heat source. Unplug the AC adapter and allow the battery to cool down. If the battery gets too hot, it will not charge properly.

•If available, try another battery and AC adapter.

If the notebook has a short operating time

•Conserve power using any of the suggestions listed in the “Batteries and Power Management” chapter in this guide.

•If you are running an application that has an automatic save feature (such as

MS Word), disable this feature or increase the specified save time to reduce hard disk access.

•If the operating time has gradually become shorter and the battery is more than a year or two old, you may need to replace the battery.

•Heavy modem use can impact battery-operating time.

•PC card use can impact battery-operating time.

•Test and recondition the battery every three months.

If the Time Remaining for the battery is not correct

The Time Remaining is an estimate, not a precise value, and is based on the rate at which the notebook is using power at the moment. This value therefore depends on your current task and assumes that you will continue using power at the same rate until the battery runs out. So, if you check the Time Remaining while the notebook is performing a task requiring a good deal of power (such as reading from a CD or DVD), the value will probably show less time remaining than you really have, since you will probably later switch to tasks that require less power.

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Contents Compaq Notebook Series Reference Guide Reference Guide Second Edition March Part Number Important Safety Information Software Product License Agreement Iv Reference GuideReference Guide Vi Reference Guide Contents Batteries and Power Management Troubleshooting and Maintenance Index Getting Started with Your Notebook Identifying Parts of the Notebook Front panel and right panel componentsCD-ROM, DVD, or other drive Universal serial bus port USB Left panel and back panel components PC Card and CardBus slot and buttons Bottom panel components Identifying Parts of the Notebook Power mode Battery statusStatus lights Hard drive activityIdentifying Parts of the Notebook Setting Up Your Notebook Insert the batteryConnect AC power Connect a phone line Set up Windows Turn on the notebookHint Basic Operation Default power settings Power mode To enter this mode FunctionStandby -Power Operating Your NotebookTo reset the notebook To change the boot deviceTouchPad on-off button and indicator light To use the TouchPadTo use the function hot keys This hot key Does thisTo use the One-Touch buttons To program a One-Touch buttonTo use the Windows and Applications keys To use the ALT GR keyThis key combination Does this Using CDs or DVDs To insert or remove a CD or DVDCould stop responding and you could lose data Onto the spindleTo play DVD movies To create or copy CDsTo set up password protection Securing Your NotebookTo lock your notebook WindowsTo attach a security cable To protect against virusesTo lock the hard drive Hard driveTaking Care of Your Notebook To protect your hard driveTo maintain your notebook To safeguard your data To clean your notebookTo extend the life of the display Batteries and Power Management Managing Power Consumption How the notebook manages power automaticallyInformation that was not saved will be lost Changing timeout settings and creating power schemes Unsaved data if the notebook battery runs down completelyUsing Battery Power To check battery statusTo respond to a low-battery warning To recharge the batteryTo get the most from your batteries Using Battery Power Modem and Network Connections Using the Modem Your telephone line type prior to connecting your phone lineTo change your modem settings Special restrictions in certain countriesConnecting to a Local Area Network LAN Making Wireless Network Connections select models only Connecting to an existing wireless networkTo prepare for connections Creating a New Notebook-to-Notebook Network Ad Hoc Purchase a license before using the wireless function Individual wireless functionsTurning on communication and making a connection Turning off communication and ending a connection Making Wireless Bluetooth Connections select models only To turn Bluetooth communication on and offTurning on Bluetooth communication FunctionTo prepare for Bluetooth connections Turning off Bluetooth communicationTo send or receive files using Bluetooth Sharing files with another Bluetooth device FTPSending Outlook data to another Bluetooth device OPP Add-On Devices Connecting External Devices Connecting PC CardsInserting a PC Card Connecting External Devices Audio recorder These jacks may damage the notebookAudio ports on your notebook Connecting an external monitor Adjusting monitor resolution and other settingsTo use an external monitor Using dual display mode To connect an Ieee 1394 device select models onlyUsing the infrared port To connect an infrared device select models onlyPrinting to an infrared printer Transferring files through an infrared connectionTo use a port replicator select models only To dock to the port replicator Corresponding port on the port replicator is ignoredTo undock from the port replicator Installing Additional RAM Memory To install a RAM expansion moduleBack of the notebook Installing Additional RAM Memory To remove a RAM expansion module Installing Additional RAM Memory Replacing the Hard Drive To replace the hard driveTo replace the hard drive holder To prepare a new hard drive Troubleshooting and Maintenance Troubleshooting Your Notebook Audio problemsIf no sound is audible If sound does not recordCD-ROM and DVD problems If you can’t boot from a CD or DVDIf you get a Region Code error when playing a DVD movie If a DVD plays erraticallyDisplay problems Hard drive problems Heat problemsInfrared problems Keyboard and pointing device problemsLocal area network LAN problems If a PS/2 scroll mouse doesn’t workIf the built-in network adapter doesn’t connect to the LAN If you can’t log in to Netware serversMemory problems Modem problemsIf the modem doesn’t dial or no dial tone is detected If the modem dials incorrectlyIf the modem dials but doesn’t connect If the modem isn’t detectedIf the modem causes an Error message If the modem dials but you can’t hear itIf the modem connects, but transferred data is bad If the modem doesn’t faxPC Card Pcmcia problems Performance problemsPower and battery problems If the notebook stops respondingIf the notebook turns off immediately after it turns on If the notebook keeps beepingIf the battery does not charge If the Time Remaining for the battery is not correctIf the notebook has a short operating time Printing problems Serial, parallel, and USB problems If a serial mouse doesn’t workIf a serial modem does not work properly If the serial or parallel port is not workingStartup problems Wireless problems If you have problems with wireless 802.11 communicationIf your notebook cannot detect any Bluetooth devices If your notebook cannot detect a certain Bluetooth deviceIf you can connect, but the network is slow Configuring the Notebook To run the Bios Setup utilitySetting Description Default Main MenuSecurity Menu To change video memory settings using Bios Setup utility Reinstalling and Updating Software To replace a damaged QuickRestore System Recovery CDReference Information Command Conexant Modem Reference InformationModem Reference Conexant G,h,i G,h +MCR ECC Commands AT* Commands +FMRRegister Function Conexant Range/units Default Code MeaningSafety Information Power cordsCountry or Region Rated Voltage and Current Battery safety Laser safetyLED safety Mercury safetyExposure to radio frequency radiation Regulatory Information Connections to Peripheral DevicesRegulatory Information Canada Declaration of Conformity U.S.AResponsible Party Trade nameEuropean Union Regulatory Information Japan Japan Telecommunications ApprovalNew Zealand Conexant AMC20493-KT5 Data Fax Modem PTC 211/02/071Russia International EMC Index QuickRestore System Recovery USB
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2547EA, 2552AI, 2541AH, 2543AH, 2542EA specifications

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