HP 2500 (DP662AV) If the modem dials but you can’t hear it, If the modem causes an Error message

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Troubleshooting and Maintenance

Troubleshooting Your Notebook

•Open the hardware Device Manager. Select Start > Control Panel > Performance and Maintenance > System. If the modem is disabled, try to enable it. If it has a conflict, try disabling another device.

•If you’re running fax software using fax Class 2, try using Class 1.

If the modem dials but you can’t hear it

•If your model has an audio mute light, make sure it is turned off. If it’s on, press the audio mute button.

•Check the speaker volume setting.

•In Control Panel, open Phone and Modem Options, then select the modem and select Properties. Check the volume setting on the General tab.

If the modem connects, but transferred data is bad

•In Control Panel, open Phone and Modem Options. Make sure the parity, speed, word length, and stop bits match on sending and receiving modems.

•Try a different phone line or dial a different server number.

If the modem causes an ERROR message

A string of AT commands may contain an incorrect command. If you entered commands as extra settings for the modem in Control Panel or in your communications software, check the commands.

If the modem doesn’t fax

•If you’re using fax Class 2 in the fax software, try using Class 1.

•Close any other communications programs.

•If you’re faxing by printing from an application, make sure you’ve selected the fax printer.

•Try turning off power management features temporarily.

If excessive line current is detected

Make sure you’re using an analog telephone line (2, 3, or 4 wires). You must not use a digital line. In a hotel, ask for a data line.

If the modem clicks repeatedly but doesn’t connect

•Make sure you’re using an analog telephone line (2, 3, or 4 wires). You must not use a digital line. In a hotel, ask for a data line.

•Check all cables and connections.

74 Reference Guide

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Contents Compaq Notebook Series Reference Guide Reference Guide Second Edition March Part Number Important Safety Information Iv Reference Guide Software Product License AgreementReference Guide Vi Reference Guide Contents Batteries and Power Management Troubleshooting and Maintenance Index Getting Started with Your Notebook Front panel and right panel components Identifying Parts of the NotebookCD-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 Battery status Power modeStatus lights Hard drive activityIdentifying Parts of the Notebook Insert the battery Setting Up Your NotebookConnect AC power Connect a phone line Set up Windows Turn on the notebookHint Basic Operation Power mode To enter this mode Function Default power settingsStandby -Power Operating Your NotebookTo change the boot device To reset the notebookTo use the TouchPad TouchPad on-off button and indicator lightThis hot key Does this To use the function hot keysTo program a One-Touch button To use the One-Touch buttonsTo use the Windows and Applications keys To use the ALT GR keyThis key combination Does this To insert or remove a CD or DVD Using CDs or DVDsCould stop responding and you could lose data Onto the spindleTo create or copy CDs To play DVD moviesSecuring Your Notebook To set up password protectionTo lock your notebook WindowsTo protect against viruses To attach a security cableHard drive To lock the 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 Unsaved data if the notebook battery runs down completely Changing timeout settings and creating power schemesTo check battery status Using Battery PowerTo respond to a low-battery warning To recharge the batteryTo get the most from your batteries Using Battery Power Modem and Network Connections Your telephone line type prior to connecting your phone line Using the ModemSpecial restrictions in certain countries To change your modem settingsConnecting 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 To turn Bluetooth communication on and off Making Wireless Bluetooth Connections select models onlyTurning on Bluetooth communication FunctionTurning off Bluetooth communication To prepare for Bluetooth connectionsTo 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 To connect an Ieee 1394 device select models only Using dual display modeTo connect an infrared device select models only Using the infrared portPrinting to an infrared printer Transferring files through an infrared connectionTo use a port replicator select models only Corresponding port on the port replicator is ignored To dock to the port replicatorTo 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 To replace the hard drive Replacing the Hard DriveTo replace the hard drive holder To prepare a new hard drive Troubleshooting and Maintenance Audio problems Troubleshooting Your NotebookIf no sound is audible If sound does not recordIf you can’t boot from a CD or DVD CD-ROM and DVD problemsIf you get a Region Code error when playing a DVD movie If a DVD plays erraticallyDisplay problems Heat problems Hard drive problemsKeyboard and pointing device problems Infrared problemsIf a PS/2 scroll mouse doesn’t work Local area network LAN problemsIf the built-in network adapter doesn’t connect to the LAN If you can’t log in to Netware serversModem problems Memory problemsIf the modem dials incorrectly If the modem doesn’t dial or no dial tone is detectedIf the modem dials but doesn’t connect If the modem isn’t detectedIf the modem dials but you can’t hear it If the modem causes an Error messageIf the modem connects, but transferred data is bad If the modem doesn’t faxPerformance problems PC Card Pcmcia problemsIf the notebook stops responding Power and battery problemsIf 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 If a serial mouse doesn’t work Serial, parallel, and USB problemsIf a serial modem does not work properly If the serial or parallel port is not workingStartup problems If you have problems with wireless 802.11 communication Wireless problemsIf your notebook cannot detect any Bluetooth devices If your notebook cannot detect a certain Bluetooth deviceIf you can connect, but the network is slow To run the Bios Setup utility Configuring the NotebookMain Menu Setting Description DefaultSecurity Menu To change video memory settings using Bios Setup utility To replace a damaged QuickRestore System Recovery CD Reinstalling and Updating SoftwareReference Information Command Conexant Modem Reference InformationModem Reference Conexant G,h,i G,h +MCR ECC Commands +FMR AT* CommandsCode Meaning Register Function Conexant Range/units DefaultSafety Information Power cordsCountry or Region Rated Voltage and Current Laser safety Battery safetyMercury safety LED safetyExposure to radio frequency radiation Connections to Peripheral Devices Regulatory InformationRegulatory Information Declaration of Conformity U.S.A CanadaResponsible Party Trade nameEuropean Union Regulatory Information Japan Telecommunications Approval JapanConexant AMC20493-KT5 Data Fax Modem PTC 211/02/071 New ZealandRussia International EMC Index QuickRestore System Recovery USB
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2547EA, 2552AI, 2541AH, 2543AH, 2542EA specifications

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