User`s guide

Aironet Wireless Communications, Inc. A-1 Confidential and Proprietary
Appendix A – PC4500/4800 Troubleshooting
The PC4500/4800 provides LED messages and error codes. This chapter provides the general procedures
for correcting common problems encountered when installing the PC4500/4800 system.
Indicator LEDs
The PC4500/4800 has two indicator LEDs located on the face of the card: one green and one amber.
The Green LED is the Link Integrity/Power LED. It glows when the card is receiving power and flashes
when the PC4500/4800 is linked with the network.
The Amber LED is the Link Activity LED. It flashes when the PC4500/4800 is receiving or transmitting
data, or flashes in a pattern to indicate an error condition.
See Tables A.1, A.2, and A.3 for an explanation of the LED Messages and Error Codes.
Table A.1 - Green LED Operating Messages
Green LED Condition
Off No power or error
Flashing Quickly Power on, self-test OK, scanning for a network
Flashing Slowly Associated with an infrastructure network
Table A.2 - Amber LED Operating Messages
Amber LED Green LED Condition
Flashing Flashing Slowly PC4500/4800 is
transmitting or receiving
data while associated with
an access point
Flashing in a Pattern Off Indicates an error condition
Dim Off Card is not operating (reset)
Table A.3 - LED Error Codes
Amber LED Condition
Blink at 2 second rate RAM failure
2 fast blinks / 2 second pause Flash Boot Block Checksum failure
3 fast blinks / 2 second pause Firmware Checksum failure
4 fast blinks / 2 second pause MAC address error (error reading MAC
chip)
5 fast blinks / 2 second pause PHY access error
6 fast blinks / 2 second pause Incompatible firmware
Troubleshooting
If your radio fails to establish contact:
• Make sure the antenna is securely attached.
• Change your location or the location of the antenna by a few feet and transmit again.
• Make sure the PC4500/4800 is securely inserted in the PC Card slot.
• Make sure the receiving equipment is turned on and operating.
• Make sure the receiving equipment is properly connected to the host computer