Northern Telecom Meridian SL-1 Reference Manual page 21

Chart 3-4
QUAA3 power unit replacement
St ep Pr oced ur e
1 Set the AC BRKR or the AC POWER breaker (whichever is
equipped) on the front of V
the -48 rectifier to OFF.
2 Set the DC BRKR breaker on the QBL24 battery units (if equipped)
serving the cabinet to OFF.
3 Tag and disconnect connectors J1, J2, J3, J4, J5, J6, and J7 at rear
of QUAA3 unit.
4 Tag and disconnect wires from terminals
1, 2, 3, 4, 5, and 6 of TB4 at rear of QUAA3 unit.
5 Perform this step only if a QPC705 converter is installed beside the
QUAA3 unit.
From the front of the cabinet, remove screws securing
the QPC705 converter to the cabinet. Slide the QPC705
out of the cabinet and set aside.
6 From the front of the cabinet, remove the two bolts securing the right
bottom of the QUAA3 unit to the cabinet.
7 Remove the two screws securing the left side of the QUAA3 unit to
the cabinet and remove unit from cabinet.
8 Position the replacement QUAA3 unit in the cabinet and secure to
cabinet with mounting screws and bolts.
9 If previously removed, reinstall the QPC705 converter and secure to
cabinet with mounting screws.
10 At the rear of the QUAA3 unit, reconnect connectors J1, J2, J3, J4,
J5, J6, and J7.
11 On TB4 at rear of QUAA3 unit, reconnect wires 1 through to
terminals 1, 2, 3, 4, 5, and 6.
2-Mb/s Remote Peripheral Equipment
Equipment replacement 3-7
Appendix 1 to 553-2741-500