User manual

LED Interpretation

Page 7-1General

DEFINITY Enterprise Communications Server Release 6

Maintenance for R6vs/si

555-230-127

Issue 1

August 1997

LED Interpretation

General

The lighting and unlighting of LEDs indicates to the system user the status of

various maintenance components in the system. LEDS are located on the

attendant console, on all circuit packs in the switch cabinets and, optionally, on

customer-designated voice terminals. The following LEDS are included in the

system:

■ Processor circuit pack and maintenance circuit pack LEDs

■ Duplication interface circuit pack LEDs

■ Attendant console LEDs

■ Carrier power unit LEDs

■ Power distribution unit LEDs

■ Control and port circuit pack status LEDs

Processor and Maintenance Circuit

Pack LEDs

The front panels of the Processor circuit pack and the Maintenance circuit pack

are identical. Each has two groups of LEDs. One group indicates the status of the

pack, and the other group (which includes the Major, Minor, and Warning alarms

described previously) reflects maintenance conditions in the entire system (that

is, the PPN and EPN cabinets). See Figure 7-1

■ Red (alarm)—the system has detected a fault in this circuit pack.