3Com 5102B-EE installation and operation guide Appendix D Power-Up Self-Test

Cable Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-6

Troubleshooting Transceiver Cables . . . . . . . . . . . . . . . . . . . . . . . . . C-6

Symptoms of Bad Transceiver Cables . . . . . . . . . . . . . . . . . . . . . C-6

Causes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-6

Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-7

RS-232 Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-7

Appendix D — Power-Up Self-Test

Initiating Self-Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-1

Front Panel LED Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-1

Screen Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-3

When an Error Occurs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-4

Appendix E — Technical Support

On-line Technical Support	E-1
Email Technical Support	E-2
World Wide Web Site	E-2
Support from Your Network Supplier	E-2
Support from 3Com	E-3
Returning Products for Repair	E-4
Accessing the 3Com MIB	E-4
3Com Technical Publications	E-5

Index

ONline Ethernet Bridge Module Installation and Operation Guide ix