IBM xSeries 235, Maintenance & Troubleshooting

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4. Remove the fixed power supply (see the following illustration).
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5. Disconnect all power-supply cables from the system board (J4, J10), SCSI
backplane, and other backplanes or devices.
6. From the rear of the server, remove the two screws at each side of the fixed
power supply.
7. Gently pull the power supply from the server, making sure the cables do not
snag on the chassis or system board.
Note: You might need to insert the blade of a screwdriver behind one corner of
the power supply to begin moving it.
8. To install a non-hot-swap power supply option, reverse the previous steps.
Front fan housing
Complete the following steps to remove the blower housing.
Note:
v Read “Installation guidelines” on page 41.
v Read the safety notices at “Safety information” on page 163.
v
Read “Handling electrostatic discharge-sensitive devices” on page 166.
1. Turn off the server.
2. Disconnect all external cables and power cords from the back of the server.
3. Remove the front bezel (see “Removing the bezel” on page 52).
4. Remove the server cover (see “Removing the left-side cover” on page 51).
5. Remove the two front fans (see “Replacing a hot-swap fan” on page 91).
6. Disconnect and remove adapter cards and spacers (see “Working with
adapters” on page 56).
7. Remove the two central fans (see “Replacing a hot-swap fan” on page 91).
8. Remove the plastic baffle.
9. Remove the DASD backplane (see “DASD backplane” on page 117).
Chapter 5. Service replaceable units
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