3Com 3CRWE62092A User Manual

Contents

38 CHAPTER 5: TROUBLESHOOTINGThe PC Card LED indicates the following:Computer operating systemdoes not recognize the card.In the WLAN Launcher window,you see a yellow X on theclient icon.The diagnostic adapter presencetest fails.Make sure the card is properly inserted in the slot.Make sure that PCMCIA support is installed.Check whether a card is already in use.Windows 95, Windows 98, Windows Millennium Edition(Windows Me), and Windows 2000: Check whether thecomputer has a Plug and Play BIOS.Windows NT: Make sure that CardWizard is installed onyour computer and that you have removed any utility that issimilar to CardWizard.Client cannot associate with anaccess point.In the WLAN Launcher window,you see a red dotted line withan X.Diagnostic network connectiontest fails.Click the Padlock icon to display Security/Network settings.Make sure that the WLAN Service Area set on the clientmatches that set on the access point. Or, set the client toAttach to any WLAN Service Area.Make sure that encryption is set up correctly and matchessecurity set on the access point. See “Changing Networkand Security Settings” and “40-bit Shared Key (Wi-Fi)Encryption Settings”.If you are associating with a 3Com AirConnect® accesspoint, make sure that the Short RF Preamble parameter isdisabled on both access points.There is no network associationwhen the computer becomesactive again after being in sleepmode or after the PC Card isremoved and reinserted.Log out and log in again, or restart the computer to restorethe connections.Client cannot communicate withthe network.Make sure that fixed IP settings are correct.If you are connecting to a wired network, make sure thatthe access point you are associated with is connected to thewired network.If you are using a DHCP server, release/renew the IP address.Client is not working underWindows NT.Make sure that CardWizard is installed and that any utilitiessimilar to CardWizard are not installed.Condition DescriptionOff The computer does not recognize the PC Card.On, but not blinking The computer recognizes the PC Card, but the card is notfunctioning.Blinking The PC Card is operating. The blink speed ranges from approximatelyonce every 2.5 seconds to approximately 10 times per second. Slowblinking indicates that the client is either not associated to an accesspoint or is associated at a slow rate. Fast blinking indicates a goodnetwork association and fast transmission.Symptom Solutions