Nortel Networks P0992639 01 manual 96 / Troubleshooting

96 / Troubleshooting

3.Verify that the red light is not flashing.

The red light flashes for about 15 seconds when a base station powers up. This is normal. If the red light continues to flash, one of the problems may have occurred:

•The ICS or Station Module is not ON.

•The base station is not connected to the ICS or Station Module.

•The wiring to the base station is not correct.

•The TCM wiring length between the base station and the ICS or Station Module exceeds 1200 m.

•There is a faulty ICS, Station Module, or RPI.

•The two-way DC loop resistance of the power pairs between the Remote Power Interconnect (RPI) and the base station exceeds 75 ohms. Measure the loop resistance with an ohmmeter. If the resistance exceeds 75 ohms, install a second power pair, or power the base station with a plug-top power supply.

•The base station is faulty.

4.Verify that the power cord of the RPI is properly connected to a working AC outlet. If the base station is powered locally, verify that the power supply is properly connected to a working AC outlet and that the power supply cable is properly connected to the base station power connector

5.If an external antenna is installed, verify that the external antenna coaxial cable is properly connected to the BNC connector of the base station and that the corresponding radio is programmed to have an external antenna (see Installing external antenna and lightning surge arrestor procedures for the United States of America on page 37).

Note: Ensure there are not any bridge taps on the TCM.

Modular ICS Companion Installer Guide P0992639 01