Sun Microsystems FC-100 service manual Troubleshooting, Reassembling the Cabinet

2.3.8Reassembling the Cabinet

Follow the instructions in your system or expansion cabinet documentation. If necessary, be sure to:

■Replace or close the top front panel

■Replace or close the rear panel

■Push the antitilt bar back into the cabinet

2.4Troubleshooting

If a GBIC is properly installed, the Device Active LED for the GBIC should be on and the Bypass LED should be off.

If the Device Active LED for a GBIC is flashing, replace the GBIC.

If a GBIC is installed and the Device Active LED for the GBIC is off and the Bypass LED is on, see TABLE 2-1.

TABLE 2-1Troubleshooting

Possible Cause	Solution
Module not properly inserted	Remove and reinsert the GBIC.
Diminished or missing signal from node	Plug the optical cable from the other device
	into a known good GBIC.
Bad hub port	Move the GBIC to a known good port on
	the hub.
Faulty GBIC	Replace the GBIC.

2-8Sun StorEdge FC-100 Hub Installation and Service Manual • September 1998