User`s guide

R Series Data Center Products User’s Guide, Rev. B Hardware Upgrade and Replacement Procedures • 79
Replacing the R4300 Fan Pack
To replace the Fan Pack on the R4300 chassis, do the following:
1. Power down the blades in the chassis.
2. Unplug the chassis power cords.
3. Using a #2 Phillips screwdriver, remove the 5 screws on the back of the chassis
that attach the fan pack.
4. Insert a finger in the slot on the left side of the fan pack and slowly pull the fan
pack out.
5. Slowly insert the new fan pack to ensure proper seating of the connector.
6. Replace the screws to secure the fan pack.
7. Replace the power cords.
8. Turn on the blades.
Replacing an R4300 Power Supply Unit (PSU)
To replace a PSU in the R4300 chassis, do the following:
1. Power down the blades in the chassis.
2. Unplug the chassis power cords.
3. Using a #2 Phillips screwdriver, remove the 5 screws on the back of the chassis
that attach the fan pack. Insert a finger in the slot on the left side of the fan pack
and slowly pull the fan pack out.
4. Pull the failed PSU (the one with the red LED displaying) straight out until it clears
the chassis.
5. Insert the replacement PSU and push it firmly until the connector seats. A green
LED is displayed.
6. Slowly insert the new fan pack to ensure proper seating of the connector.
7. Replace the screws to secure the fan pack.
8. Replace the power cords.
9. Turn on the blades.
CAUTION: Disconnect all sources of power before servicing the R4300
chassis.
Figure 36 R4300 Fan Pack Attachment Points