Nortel Passport 15000, Hardware Installation And Maintenance, Page: 797 / 874

Chapter 17 Hardware procedures 797
Passport 15000, 20000 Hardware Installation, Maintenance, and Upgrade 5.2S2
Procedure steps
1 At the front of the BIP, switch off the BIM breaker that controls power to
the PIM by pressing in the O symbol. The mapping of breakers to PIMs is
labelled on the rear of the BIM captive screw cover.
The A and B LEDs on the PIM of a Passport 20000 both extinguish when
power to them is switched off.
Switching a breaker off generates a software alarm. This is normal for a
replacement.
2 Put tape over the breaker to indicate it is deliberately off.
3 At the rear of the BIP, note the path of the old black-and-white cables to
the PIM and its mate in the same cage.
4 Cut and discard the tie-wraps of all PIM cables from the PIM up to the BIP.
5 At the PIM, pinch the tabs on the side of the connector to unplug it. While
pinching the tabs on the connector, pull straight out.
6 At the other end of the cable at the BIP, disconnect the cable the same
way.
7 At the PIM, press the connector of the replacement cable in until both tabs
click. The connector mates only one way.
8 Route the cable up to the BIP through the cable management brackets
and up the BIP connector. The cable path for each PIM is shown in the
figure “Connection points of the PIM cables” (page 798).
9 Plug the other end of the PIM cable into the BIP.
10 Remove the tape and switch on the BIM breaker for that PIM by pressing
in the I symbol). The generated alarms end.
11 For a Passport 20000, confirm the PIM LED is lit, indicating it is powered.
12 If your replacement cable is part of a two-cable assembly, repeat this
procedure.
13 Dress the cable slack and fasten with tie-wraps. Cut off the tie-wrap tails.