Hardware maintenance tools Page 33 of 162Communication Server 1000E MaintenanceEach new code shown on a maintenance display overwrites the one before it.However, all codes displayed are recorded. You can review them by printingthe History File (in LD 22).Figure 5 also shows the location of the Enable/Disable (Enb/Dis) switch onthe card. This switch enables and disables the hardware for that card.Note: During normal operation, set each Enb/Dis maintenance switchon the dual Call Servers to Enb.The System Utility card also contains DIP switches that specify the addressof the card for Call Server 0 or Call Server 1.Circuit card LEDsMany circuit cards have one or more LEDs on the faceplate. The LED givesa visual indication of the status of the card or of a unit on a card.When a green LED is steadily lit, it indicates the card is operating normally.When a green LED is off, it indicates the card is disabled or faulty.When a red LED is steadily lit, it indicates the card, or a unit on it, is disabledor faulty or unequipped. When a red LED is off and power is available to thecard, it indicates the card is operating normally.Media Card LEDsThe Media Card faceplate provides the following LEDs.Status LEDThe Media Card faceplate red LED indicates the following:• the enabled/disabled status of the card• the self-testing result during power up or card insertion into anoperational systemEthernet activity LEDsThe Media Card faceplate contains Ethernet activity LEDs for each subnet.The faceplate contains six Ethernet activity LEDs, three for the ELAN subnet
