Cabletron Systems 3Com manual Troubleshooting, Verify AP Operation

34CHAPTER 2: INSTALLING ACCESS POINT HARDWARE

Troubleshooting	Check the following symptoms and their possible causes before contacting the
	3Com Support Center.

Verify AP Operation

1If the AP does not power up, you may be experiencing one of the following:

■Faulty AP power supply

■Failed AC supply

■Electrical Management System (EMS) operating outlet

2After the AP resets and hardware is initialized, it performs an SRAM test. If the test passes, all three LEDs turn on. If the test fails, the LEDs all turn off and the AP resets. The LEDs turn off sequentially, in the order shown, as each of the following tests pass.

LED	State	Test Passed
Power	Blinks	Bootup and run-time codes
	continuously	downloaded to AP flash memory
		successful. Run-time code controls the
		AP.
Wireless LAN Activity	Off	Serial port initialized, FIFO buffer
		flushed, serial port to AP connection
		checked.
Wired LAN Activity	Off	LAN adapter present.

Identify wired network problems:

3No operation:

■Verify AP configuration via Telnet, PPP or UI. Review procedures for Ethernet and serial connection of the AP. Review AP firmware revisions and update procedures.

■Verify network configuration by ensuring that there are no duplicate IP addresses. Power down the device in question and ping the assigned address of the device. Ensure no other device responds to that address.

4AP powered on but has no connection to the wired network:

■Check connections for proper wiring.