5-2
Cisco Aironet Wireless LAN Client Adapters Installation and Configuration Guide for MS-DOS
OL-1744-02
Chapter5 Error Messages and Trouble Shooting
Accessing the Latest Troubleshooti ng Info rm a tio n
Accessing the Latest Troubleshooting Information
This chapter provides basic troubleshooting tips for your client adapter. For more up-to-date and
complex troubleshoot in g in f or ma tion, refer to the TAC web site at h tt p://www.cisco.com/tac. Select
Wireless Technologies under Top Issues.
Interpreting the Indicator LEDs
The client adapter s how s m e ssages and error co nd it io ns th rough its two LEDs:
•Link Integrity/Power LED (green)— This LED is on when the c lient adapter is receiving p ower and
blinks slowly when the ad apt er i s li nk ed w it h t he n etw o rk.
•Link Activity LED (amber)—This LED blinks quickly when t he client adapte r i s receiving or
transmitting data and blinks in a repeating pattern to show an error condition.
Tabl e 5-1 interprets th e LED operating mes sag es .
Table5-1 LED Operating Messages
Green LED Amber LED Condition
Normal
Operation Blinking quickly Blinking quickly Power is on, self-test is OK, and client
adapter is scanning for a n et work.
Blinking slowly Blinking quickly Client adapter is associa ted t o an acc es s
point.
Continuously on or
blinking slowly Blinking Client adapter is transmit ti ng or receiving
data while associated to an a ccess point.
Off Blinking quickly Client adapter is in p ower s ave m ode.
On continuously Blinking quickly Client adapter is in ad hoc mode.
Error
Conditions Off Off Client ada pt er is not receiving power, or an
error has occurred.
Off 1 blink at 2-second
rate RAM failure. Refer to the “Obtaining
Technical Assistance” section in the Prefa ce
for technical support information.
Off 2 fast blinks,
2-second pause Flash boot block checksum failure. Refer to
the “Obtaining Technical Assistance” section
in the Preface for technical s u ppo rt
information.
Off 3 fast blinks,
2-second pause Firmware checksum failu re. Re load the
firmware.
Off 4 fast blinks,
2-second pause MAC address error (error reading MAC
chip). Reload the firmware.
Off 5 fast blinks,
2-second pause PHY access error. Refer to t he “Obtaining
Technical Assistance” section in the Prefa ce
for technical support information.
Off 6 fast blinks,
2-second pause Incompatible firmware. Load the correct
firmware version.