Receive optical signal, Cable, Check for problems

Table B. Troubleshooting with Front-Panel Indicators (Continued)

Indicator
Color	Meaning	Possible Cause		Corrective Action

		Optic Fault LED (	) (Continued)

Red	Ethernet link	NOTE: In addition to a red Optic Fault LED,		Do any of the following to
	is down.	the 100BASE-FX LED and the left RJ-45 Port		restore the link:
		Status LED (Link/Activity) LED are not lit.		• Check the connections
		A link-down detection condition exists due to		of the fiber optic cable.
		any of the following fault conditions:		If the cable is
		• 100BASE-FX port does not transmit or		disconnected, connect
		• 100BASE-FX port does not transmit or		the cable. If the cable is
		receive optical signal:		the cable. If the cable is
		– Disconnected or defective fiber optic		defective, replace the
		– Disconnected or defective fiber optic		cable.
		cable		cable.
		cable		• Clean, polish, or replace
		– Defective 100BASE-FX port on local or		• Clean, polish, or replace
		remote module		fiber optic cable con-
		remote module		nectors as necessary.
		– Damaged or dirty fiber optic cable		nectors as necessary.
		– Damaged or dirty fiber optic cable		• Check for problems
		connectors on local or remote module		• Check for problems
		– Optical dB losses in the fiber optic		with the fiber optic
		– Optical dB losses in the fiber optic		installation, for exam-
		installation exceed the optical power		ple, excessive dB losses
		budget specification stated in the		ple, excessive dB losses
		budget specification stated in the		in connectors, splices,
		Specifications section.		in connectors, splices,
		Specifications section.		patch panels, cables,
		– Laser fault on remote module		patch panels, cables,
		– Laser fault on remote module		and so on.
		(Optic Fault LED is flashing red on the		• Check power connec-
		remote module)		• Check power connec-
		– Power not connected to remote		tion of the remote
		– Power not connected to remote		module. Replace power
		module		supply if necessary.
		• 10BASE-T/100BASE-TX port on the remote		• Check the cable and
		module does not transmit data to or		external equipment that
		receive data from the external equipment		connects to the
		connected to it:		10BASE-T/100BASE-TX
		– Disconnected or defective Category 5e		port on the remote
		(or higher) cable		module.
		– Defective 10BASE-T/100BASE-TX port		• If the 100BASE-FX port
		– Problem with external equipment con-		or 10BASE-T/
		– Problem with external equipment con-		100BASE-TX port on the
		nected to the 10BASE-T/100BASE-TX		100BASE-TX port on the
		port		module is defective,
		For additional information, refer to the		contact Product
		For additional information, refer to the		Support.
		RJ-45 10BASE-T/100BASE-TX Port Status		Support.
		RJ-45 10BASE-T/100BASE-TX Port Status
		LED - Left section in this table.

				(Continued on next page)

20	C2653M (6/07)

Optic Fault LED (

any of the following fault conditions:

If the cable is

receive optical signal:

cable.

remote module

fiber optic cable con-

– Damaged or dirty fiber optic cable

• Check for problems

with the fiber optic

budget specification stated in the

Specifications section.

– Laser fault on remote module

and so on.

module

supply if necessary.

connected to it:

port on the remote

(or higher) cable

module.

or 10BASE-T/

port

module is defective,

contact Product

Support.

LED - Left section in this table.

C2653M (6/07)