Nortel DMS-100 Series Manual page 156

15-2 56K Crossover circuit pack (NT6M48AA) - Turbo only
Procedure 15-1
Replacing the 56K XOVR circuit pack (NT6M48AA)
Step Description
CAUTION
Since all DPP circuit packs are static sensitive, be careful when handling them. Wear
a wrist grounding strap when working with the DPP.
WARNING
Since the DPP is powered up during this procedure, observe all safety procedures for
operations on live equipment.
18
Make sure no polling is occurring. Wait for a low traffic period, if possible.
19
Remove the slotted captive screws that fasten the outer edges of the B rear panel assembly
to the cabinet.
20
Remove the front panel of the A chassis. Put the two panels in a safe place to prevent
bending and scratching.
21
Remove the power from the 56K Crossover circuit pack first by disconnecting plug P1.
Then remove the other cables.
Note: Verify the cable markings (identification) or attach labels to the cables when removing them
to facilitate replacement in the correct positions.
22
Remove the screws that fasten the 56K Crossover circuit pack. Gently remove the circuit
pack from its mounting position.
23
Mount the replacement assembly in the vacated position.
Note: When replacing the screws, align carefully before tightening to avoid stripping. Tighten the
screws, alternating until all are equally tight. Do not "cinch down" any one screw until all are
properly aligned; no binding or force needed to turn.
297-1001-539 Standard 01.03 September 2000
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