Nortel Networks DCT1900 User Manual
Page 171
Technical Product Manual - DCT1900
Installation Instructions, or BDVNB 101 01/3
Install-DCT1900/R8/mw
4-17
© 2000-2005
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Remove any circuit boards in the three slots next to the side of the existing cabinet that is
going up against the new cabinet. For our example, this would be slots 48, 52, and slot 56.
Remember what you pulled out and label them.
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Remove the (3) termination resistors, R201, R202, and R207, from the right hand side of the
backplane. Refer to Figures 4-9 and 4-10. DO THIS CAREFULLY. Save the resistors.
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Remove the knockout plate from the right hand side of the existing cabinet. See Fig. 4-4. DO
THIS CAREFULLY.
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Take the remaining two metal shielding gaskets from the installation kit, NTMNB 101 05, and
insert them into the hole whre the knockout plate was.
Mount the new cabinet
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Hang the new cabinet on the bracket on the wall. Position it to the right hand side of the
bracket. This should give you enough room between the brackets so that the shielding
brackets do not interfere with each other as you set the new cabinet against the wall.
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Once the new cabinet is on the bracket, push it up against the existing cabinet as close as
possible. This will compress the fingers of the shielding gaskets.
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While holding the new cabinet up against the existing cabinet, mark the location of the two
mounting holes on the bottom of the new cabinet.
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Drill the holes and secure the new cabinet to the wall with screws.
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Remove the green ground wire from the installation kit, NTMNB 101 05, and connect it
between the grounding plates of the new and existing cabinets. See Figure 4-8.
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Take the flat ribbon cable from the installation kit, NTMNB 101 05, and feed it GENTLY
through the knockout holes between the cabinets. The connectors on this cable are keyed.
Look at the cable before you feed it through. Make sure you have it oriented correctly.
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Gently seat the connectors into the backplane connectors.
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Place the circuit boards that you previously pulled out of the existing cabinet back into the
correct slots in the existing cabinet.
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Mount the power supply(s) for the new cabinet.
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Connect the power supply(s) to the cabinet.
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Turn the power supply(s) on and verify the presence and polarity of voltage on the terminal
block on the bottom of the cabinet.
If you have not previously tested the cabinet and verified that it powers a board correctly, now is
the time to do it.
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Insert a circuit board into the cabinet in any slot. Turn the cabinet power switch on. If
everything is all right, then a green LED at the very top of the circuit board should be lit. Ignore
any other LEDs.
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Turn off the cabinet power switch and remove the circuit board.
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Place the circuit board(s) for this cabinet in the correct slot(s).
Powering the system back up
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Turn the power switch for the new cabinet on.
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Turn the power switch for cabinet #1 on.
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The system should initialize as it did when it was single cabinet system, but you should see
the lights on the card(s) in the second cabinet turn on and off also.
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Connect the maintenance PC to the system and log onto the CSMW.
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Verify that the CSMW shows the boards in both cabinets.
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Do a system back up. Give it a new name.