Northern Telecom Meridian SL-1 Reference Manual page 25

Chart 3-6
QUX20 power unit replacement
Service in the cabinet is interrupted when replacing the QUX20
St ep Pr oced ur e
1 Set the breakers on the faceplate of the QUX20 unit to OFF.
2 Set the CAB INP breaker on the QUX19 unit to OFF.
3 From the rear of the cabinet, disconnect the lead equipped with a
spade connector from the QUX20 unit to TB3 at rear of the QUX19
unit.
4 Tag and disconnect red and blue wires from terminals 2, 3, 4, and 5
(4 and 5 may be spare) of TB5 at rear of QUX20 unit.
5 From the front of the cabinet, remove the screws securing the
QUX20 unit to the cabinet and remove unit.
6 Position replacement QUX20 unit and secure to cabinet with
mounting screws.
7 From the rear of the cabinet, connect the lead equipped with a
spade connector to the terminal at TB3 at the rear of the QUX19
unit.
8 Reconnect red and blue wires to terminals 2, 3, 4, and 5 (4 and 5
may be spare) of TB5 at rear of QUX20 unit.
9 Set the required breakers on the front of the QUX20 unit to ON.
10 Set the CAB INP breaker on the QUX19 unit to ON.
2-Mb/s Remote Peripheral Equipment
Equipment replacement 3-11
CAUTION
power unit.
Appendix 1 to 553-2741-500