User Guide

DEFINITY Enterprise Communications Server Release 5

Maintenance and Test for R5vs/si

555-230-123

Issue 1

April 1997

LED Interpretation

Page 7-2Processor and Maintenance Circuit Pack LEDs

NOTE:

Alarms on the PROCR, PR-MAINT, MEMORY, and PR-MEM MOs are

indicated by the red LED on the Processor circuit pack.

■ Green (test)—the system is running tests on this circuit pack.

NOTE:

On the Standby Processor circuit pack, green means that the

Standby Switch Processing Element (SPE) is not refreshed (that is, it

is in Maintenance or Down Mode).

NOTE:

On the Maintenance circuit pack, the green LED may blink very

faintly once per second. This is the normal operating state of the

Maintenance circuit pack. The faint blink is due to a

once-per-second self-test executed by the Maintenance circuit

pack.

■ Yellow (busy)—this circuit pack is in use. In a high or critical reliability

system, the yellow LED is always off for the Standby Processor and

Memory circuit packs even when in Maint mode.

■ MAJOR ALARMS (red)

■ MINOR ALARMS (red)

■ WRNG (warning) ALARMS (yellow)

■ ACK (acknowledgment) (green)—indicates Major or Minor alarms have

been reported to INADS

■ EMERGENCY TRANSFER (red)—indicates emergency transfer has been

invoked

NOTE:

If the AC power cord is unplugged from the control cabinet, the

emergency transfer feature invokes, however the EMERGENCY

TRANSFER LED (red) is not lit due to loss of AC power.