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Cisco MGX 8800/8900 Series Hardware Installation Guide
Releases 2 - 5.2, Part Number OL-4545-01, Rev. H0, May 2006
Chapter6 Maintaining the Cisco MGX Switch or Gateway
Removing and Installing the Double-Height Front Cards
•To align the pins of the backplane and cable pins, move the cable connector slightly up and down or
side to side until the connectors are aligned and able to mate. When executing this step, keep the
bracket as level as possible.
•The connector is fully inserted when the connector shell (housing) is all the way into the enclosure
hole and the exterior of the shell with the captive screws is flush with the enclosure.
Step16 Tighten the connector screws.
Step17 Attach the DC source wires at the wiring block on the DC PEM (see Figure 6-2).
Figure6-2 Terminal Block on the DC PEM
Step18 If t he plastic cover was r emoved in Step 5, reattach it over the terminal block (see Figure 6-1).
Step19 Turn on the DC power at the circuit branch source.
Step20 Turn on the circuit breaker of the DC PEM.
Removing and Installing the Double-Height Front Cards
The following sections describe how to remove and install a double-height front card. Cards are installed
vertically on the MGX 8850 (PXM1/PXM45), MGX 8850/B, MGX 8950, and MGX 88 80 chassis; cards
are installed horizontally on the MGX 8830 and MGX 8830/B chassis.
Note All cards must be fully seated in the chassis. When installing the front card, apply even pressure to the
top and bottom of the faceplate to make sure that the card is fully seated.
The card should slide in and out with only slight friction on the adjacent board’s EMI gaskets. Do not
force the card. Investigate any binding.
Caution Proper ESD protection is required whenever you handle Cisco equipment. Ins tallation and maintenance
personnel should be properly grounded through the use of ground ing straps to eliminate the risk of ESD
damage to the equipment. Modules are subject to ESD dam age whenever they are removed from
the chassis.
48 VDC
return
Safety
g
round
–48 VDC
38228
-48V
RTN