Cisco Systems 8600 Series manual Replacing a DC Power Entry Module, Removing a Line Module

Replacing Parts

Figure 11-2 Removing a Line Module

Captive screws

(2)

Upper extractor

LM-3T3 (Typical)

Lower extractor

R

X

PORT 1

T

X

R

X

PORT 2

T

X

R

X

PORTLM– 3/T33

15ASM	T
	X

11

LM– 3/T3

LM– 3/T3

10

LM–
3/T3	LM–
	3/T3
9	8BCC-B

LM–
3/T3	LM–
7BCC-A	3/T3
	6

LM– 3/T3

5

LM–
3/T3	LM–
	3/T3
4
	3

LM– 3/T3

2

H8001

Replacing a DC Power Entry Module

DC Power Entry Modules (PEMs) contain few active components so they should rarely need replacement. Access is from the back of the node. To remove a PEM, proceed as follows:

Step 1 Check the node system voltage by using the Display Power (dsppwr) command. Note which input has failed, A or B. Power Supply A is the unit on the right side facing the rear of the node.

Step 2 Turn off the primary source of power to the PEM to be replaced.

Step 3 Turn off the circuit breaker on the PEM to be replaced.

Step 4 Remove the two screws holding the conduit box cover (see Figure 11-3). Or, remove the plastic cover plate over the input terminal block.

Step 5 Remove the power input wiring at the PEM terminal block.

Repair and Replacement 11-9