Service manual

5
RRP: Backplane
5-43
Removal and Replacement Procedures (RRPs)
10. Remove both fan modules (RRP: Fan Module on page 5-33).
11. Remove both SBAR assemblies (RRP: SBAR Assembly on
page 5-29).
12. Remove the power module assembly (RRP: Power Module
Assembly on page 5-37).
13. The backplane is secured to the director chassis with 11 panhead
Phillips screws (Figure 5-13).
Figure 5-13 Backplane Removal and Replacement
Remove the backplane:
a. Using a standard Phillips screwdriver, loosen and remove ten
of the 11 screws that secure thebackplane to the chassis. Loosen
the screws alternately from bottom to top and from side to side.
Leaveoneofthetopcenterscrewsinplaceuntilreadyto
remove the backplane.
b. While holding the backplane in place, loosen and remove the
top center screw.
c. Tilt the top of the backplane away from the director chassis.
d. Remove the backplane (PWA and frame as one FRU) from the
chassis. Place the backplane in an anti-static bag to provide
ESD protection.