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Next steps
Follow the procedure listed in
Cooling fans
Removing the witness fan
Prerequisites
1. Follow the safety guidelines listed in the
2.
Remove the rear cover.
3.
Remove the power module assembly.
Steps
1. Using the Phillips 2 screwdriver, remove the screw connected to the power distribution board (PDB) .
2. Disconnect the fan cable connected to the fan board.
3. Disconnect the NAF/RAF detection switch cable from power distribution board (PDB).
4. Lift the witness fan module from the power distribution board (PDB).
NOTE:
The numbers on the image do not depict the exact steps. The numbers are for representation of sequence.
Figure 28. Removing the witness fan
Next steps
Replace the witness fan
module.
Installing the witness fan
Prerequisites
Follow the safety guidelines listed in the
Steps
1. Align the witness fan and place it on the power distribution board (PDB).
2. Using the Phillips 2 screw driver, tighten the screws on the power distribution board (PDB).
NOTE:
The numbers on the image do not depict the exact steps. The numbers are for representation of sequence.
3. Connect the RAF/NAF detection switch cable to the power distribution board (PDB).
4. Connect the fan cable to the fan board.
After working inside your
Safety
instructions.
Safety
instructions.
system..
Installing and removing system components
37
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