Nt8D46Ac Thermostat Harness - Nortel Meridian 1 Hardware Replacement Manual

NT8D46AC Thermostat Harness

7 Software enable and test each port on the paddle board:
ENL TTY x
TTY x
— If there is a problem, an IOD system message is generated and
the red LED lights on the faceplate of the card.
— If there is no problem, exit LD 37:
****
8 Tag defective equipment with a description of the problem and
package it for return to a repair center.
Use this procedure to replace the thermostat harness located in the top cap of
each column.
DANGER
Module covers are not hinged; do not let go of the
cover. Lift the cover away from the module and set it
out of your work area.
Removing equipment
1 Disconnect the system monitor from the circuit breaker system:
a. Remove the grill on the rear of the column pedestal.
b. Loosen the two screws on the system monitor and pull it out a few
inches.
CAUTION
Service Interruption
f the system monitor is not unseated, column
operation will shut down when the thermostat
harness is disconnected.
2 Disconnect power to the top cap:
a. Remove the rear cover on the module below the top cap.
b. Remove the I/O safety panel over the backplane.
Replacing equipment
Hardware Replacement
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