Paradyne 8820-S1-906, 8820-S2-903 Removing the PEM from the BAC, Warnings, Procedure

!WARNINGS:

￿It is recommended that the following procedure be performed by a qualified electrician.

￿The 48 VDC or 60 VDC power must be disconnected at its source before attempting to connect wiring to the PEM. Do not remove wired PEMs without first disconnecting the power at its source.

You need a Phillips screwdriver to remove the PEM from the BAC.

Removing the PEM from the BAC

Procedure

1.Ensure that the power is disconnected at the source.

2.Open the PEM circuit breaker (power off).

3.Remove the PEM to be wired from the chassis by unfastening the two screws from the PEM faceplate. Save these screws since they will be needed when the wired PEM is reinstalled into the chassis.

M4 Phillips-head

Screw

Ring Tongue

Terminal

RTN	POW
48V	ER	ENTRY
	LEFT		UNIT:		MOD
	RIGHT
				LINE ULE
			UNIT:		A
					LINE B

WA	RN	ING!		POWER	O
BEFORE
			REMOVING MUST BE
					OR
					INSTALLINGDISCONNECTED
					THIS
					PWR

	48V NEG
ATTHE	SOURCE
ENTRY
	MODULE

Power Tap

00-16713

4.Grasp the flange on the extended shelf at the bottom of the PEM faceplate.

5.Pull the module toward you until it is disengaged from the backplane, and then carefully slide the PEM out of the chassis.

6.Remove the two M4 Phillips–head screws installed in the power taps located on the left and right side of the PEM wiring board. Also remove the two split cable bushings from the PEM faceplate if they are installed.

8820-A2-GZ45-20 October 2004 3