Northern Telecom Meridian SL-1 Reference Manual page 22

3-8 Equipment replacement
2-Mb/s Remote Peripheral Equipment
Chart 3-4 (continued)
QUAA3 power unit replacement
St ep Pr oced ur e
12 Ensure that the 25HZ/20HZ and the LN XFR switches on the front of
the QUAA3 unit are correctly set (usually set the same as on the
removed QUAA3 unit).
13 Set the AC BRKR or AC POWER breaker (whichever is equipped
located on the front -48 V rectifier to ON.
14 If cabinet is equipped with QBL24 battery units, set the DC BRKR
breaker on the front of the units to ON.
—co nt in ued —
Appendix 1 to 553-2741-500