19. Replace the side cover (see “Replacing the left-side cover and bezel” on page
58).
Removing and replacing FRUs
FRUs must be installed only by trained service technicians.
The illustrations in this document might differ slightly from the hardware.
Power-supply cage
To remove the power-supply cage, complete the following steps.
Power supply
assembly
Power supply
retaining screws
1. Read the safety information that begins on page vii and “Handling
static-sensitive devices” on page 57.
Attention: Static electricity that is released to internal server components
when the server is powered-on might cause the server to halt, which might
result in the loss of data. To avoid this potential problem, always use an
electrostatic-discharge wrist strap or other grounding system when you work
inside the server with the power on.
2. Turn off the server and peripheral devices, and disconnect the power cords and
all external cable as necessary to replace the device.
3. Remove the left-side cover.
4. Remove the power supplies (see “Hot-swap power supply” on page 72).
5. Press the release tab and use the handle to lift up the power-supply cage and
rotate it into the fully open position.
6. Remove two of the screws on the rear of the server that secure the cage to the
server chassis.
7. While you hold the cage in place with one hand, remove the last screw; then,
remove the cage from the server.
To install the power-supply cage, complete the following steps:
86 IBM System x3500 Type 7977: Problem Determination and Service Guide
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