director 2/64 service manual

director 2/64 service manual 4–27
FRU Removal and Replacement
CAUTION: To avoid causing machine errors or damage while working on the director,
follow ESD procedures by connecting a grounding cable to an approved bench
grounding point and wearing an ESD wrist strap.
5. Unseat and disconnect (but do not remove) both power supplies (RRP: Redundant
Power Supply on page 4–17).
6. Remove the RFI shield.
7. Remove both SBAR assemblies (RRP: Redundant SBAR Assembly on page
4–20).
8. Six panhead Phillips screws (two at the top and four at the bottom) secure the
power module assembly (1) to the director chassis, as shown in Figure 4–10.
Using a standard Phillips screwdriver, loosen and remove the screws.
Figure 4–10: Power module assembly removal and replacement
9. Pull the power module assembly (with the SBAR assembly support shelf) out of
the director chassis. Support the assembly with one hand when performing this
step.
10. Place the power module assembly in an antistatic bag to provide ESD protection.
1