1-10
Issue 1
November 1998
363-208-010, Appendix 1
NJ00675A-2 Dual Power Feed Unit Installation Procedure
viable. Under these, or similar conditions, use the following “hot swap” procedure.
Note that in a situation where both secondaries are down the initial DPFU should
simply be changed outright, as a service interruption is already in progress.
Step 1:
Mount the replacement DPFU directly under the DPFU to be replaced.
Step 2:
Locate the NE00675-31 G1 cable. This cable is approximately 18”
long and terminates in connector J117 on one end and in four 10
gauge lugs on the other. For the new DPFU, connect these lugs, using
the cable identification provided on the leads to the four screw termi-
nals on the barrier terminal strip (TB1) designated OUT for -48A, Rtn
A, -48B and Rtn B. Verify that the terminal strip screws are tightly fas-
tened.
Step 3:
Dress the J117 end of the cable over to and into the vertical duct on
the left side, as viewed from the front.
Step 4:
Remove the plastic faceplate covers (TB1) from both units.
Step 5:
On the defective DPFU, after verifying that both primaries are active
from the BDFB, disconnect from the TB1 IN terminals the primary
matching the Alarms LED (A or B) that is lit. Reconnect that feed to
the same terminals on the replacing unit.
Step 6:
With a VOM verify that -48VDC is present on both secondaries (-48A
and -48B OUT) of the replacement unit. Also verify that the green
Power LED is lit.
Step 7:
Locate the unattached J117connector from the replacing DPFU and
engage it to the unused P117B connector (p/o NE00675-31, G2). At
this point the replacing DPFUs output is in parallel with the defective
unit.
Step 8:
On the defective DPFU remove the other primary (IN) and reconnect
to the In terminals of the replacing DPFU.
Step 9:
Disconnect the J117 connector from the P117A connector on the
NE00675-31, G2 cable assembly. Attach plastic connector insulator,
removed above from P117B, to P117A and dress the unused connec-
tor back into the frame.
Summary of Contents for SLC-2000 Access System Central Office Terminal
Page 1: ...SLC 2000 Access System Customer Assembly Manual for RT Frames 363 208 010 Issue 5 May 1997...
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Page 10: ...viii Issue 5 May 1997 Contents...
Page 16: ...xiv Issue 5 May 1997 Tables...
Page 24: ...1 ii Issue 5 May 1997 Contents General Information...
Page 34: ...2 iv Issue 5 May 1997 Tables Installation Procedures 2 1 Dimensions for Figure 2 2 6...
Page 66: ...3 viii Issue 5 May 1997 Contents Cabling Wiring and Assembly...
