Nt8D22 System Monitor - Nortel Meridian 1 Hardware Replacement Manual

NT8D22 System Monitor

a. Test TDS capability:
LD 34
TDS loop
b. Test Conference capability:
LD 38
CNFC loop
c. Test MFS capability:
LD 46
MFS loop
d. If there is a problem, a TDS, CNF, or MFS system message is
generated and the appropriate red LED lights on the card
faceplate.
7 Tag defective equipment with a description of the problem and
package it for return to a repair center.
Use this procedure to replace the system monitor.
See Administration (553-3001-311) for a description of all maintenance
commands, and System Messages Guide (553-3001-411) for interpreting
system messages.
Removing equipment
CAUTION
Service Interruption
Be sure to follow the steps in this procedure in the
order shown. Removing the system monitor before
disconnecting cables may result in loss of power and
interruption of telephone service.
1 Remove the grill on the rear of the pedestal.
2 Tag and disconnect cables to the system monitor. Figure 15 on
page 174 shows the location of the system monitor in the rear of an
AC-power pedestal.
Replacing equipment
"loop" is an even loop number
"loop" is an odd loop number
"loop" is an even loop number
Page 173 of 250
Hardware Replacement