64 Service Manual (AA-RS2ED-TE, July 2004)

FRU Removal and Replacement

261Director 2/64 Service Manual

Replacing a Backplane

To replace the backplane and all FRUs disconnected from the backplane:

1. Replace the backplane:

a. Remove the replacement backplane from its protective antistatic bag.

Inspect the backplane PWA to ensure no connector pins are damaged.

b. Align the guide pins on the back of the backplane with the alignment

holes in the director chassis, as shown in Figure 82.

c. While holding the backplane in place, insert and hand tighten one of the

top center panhead Phillips screws.

d. Insert and hand tighten the remaining 10 panhead Phillips screws. Tighten

the screws alternately from bottom to top and from side to side.

e. Using a standard Phillips screwdriver, tighten the 11 panhead screws that

secure the backplane to the chassis. Tighten the screws alternately from bottom

to top and from side to side.

2. Replace the power module assembly (“RRP: Power Module Assembly” on

page 255).

3. Replace both SBAR assemblies (“RRP: Redundant SBAR Assembly” on

page 248).

4. Replace both fan modules (“RRP: Redundant Fan Module” on page 252).

5. Replace the RFI shield.

6. Seat and connect both power supplies (“RRP: Redundant Power Supply” on

page 245).

7. Seat all logic cards (CTP2 and UPM cards) into the backplane. For each logic

card:

a. Slide the card forward until it makes contact with the backplane.

b. Insert the torque tool into the Allen screw at the top of the card. Turn the

torque tool clockwise until you feel it release and hear a clicking sound.

As the screw turns clockwise, the card cams into the backplane connector.

c. Insert the torque tool into the locking Allen screw at the bottom of the

card. Turn the torque tool clockwise until you feel it release and hear a

clicking sound. As the screw turns clockwise, the card locks into place.

d. Verify the card stiffener is flush with the front of the card cage and is even

with other director logic cards.

8. Disconnect the ESD wrist strap from the director chassis and your wrist.