Nortel ICS Install Manual page 554

554 / Alarm codes
4. If the problem persists, an E&M Trunk Cartridge may be
malfunctioning. Replace one E&M Trunk Cartridge at a
time until the problem is resolved.
Alarm 68-Z
1. Locate the device(s) connected to port(s) not available for
that device type.
2. Power down the system.
3. Disconnect the device from the port identified.
4. Reconnect it to a valid port.
Alarm 75
1. Check the connection to your ISDN service provider.
Alarm: 76-X
1. Check the wiring from the ICS to the DM.
2. Refer to Problems with trunk cartridges service on page
611.
3. Refer to Data Module down on page 620.
Modular ICS 7.1 Installer Guide N0130943 02