Ntak09 And Ntrb21 Faceplate Leds - Nortel 1000E Maintenance Manual

46 Hardware maintenance tools

NTAK09 and NTRB21 faceplate LEDs

The NTAK09/NTRB21 1.5 Mb DTI/PRI/DCH circuit cards have seven
faceplate LEDs. Five LEDs are directly associated with the operation
of the NTAK09/NTRB21 circuit cards. The remaining two LEDs are
associated with the optional daughterboards. The first of these LEDs
indicates the status of the NTAK20 Clock Controller daughterboard. The
second LED indicates the status of the D-channel interface.
Table 12 "NTAK09/NTRB21 LEDs" (page
on the NTAK09/NTRB21 DTI/PRI/DCH circuit cards. Only one of the five
LEDs is on at one time.
Table 12
NTAK09/NTRB21 LEDs
Affected
circuit card LED
NTAK09 DIS
or
NTRB21
ACT
RED
YEL
LBK
DCH
State Definition
On (Red) The circuit card is disabled.
Off The circuit card is not in disabled state.
On (Green) The circuit card is in active state. No alarm
states exist, the card is not disabled, nor is it in a
loopback state.
Off An alarm state or loopback state exists, or the
card is disabled. See other faceplate LEDs for
additional information.
On (Red) A red-alarm state is detected.
Off No red alarm.
On (Yellow) A yellow-alarm state is detected.
Off No yellow alarm.
On (Green) The card is in loopback mode.
Off The card is not in loopback mode.
On (Red) The D-channel is equipped and disabled.
On (Green) The D-channel is equipped and enabled.
Off The D-channel is not equipped.
Nortel Communication Server 1000
Communication Server 1000E Maintenance
NN43041-700 02.07 22 December 2009
Copyright © 2004-2009 Nortel Networks. All Rights Reserved.
46)describes the LEDs found