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210 Chapter 9 Replace or Upgrade a Power Supply
P0993133 03
Remove a BCM400 redundant power supply cage
Use this procedure to remove an existing redundant power supply cage from the BCM400
platform base chassis.
1 Set up the server for maintenance (see “Shut down the system hardware” on page 146).
Disconnect all cables from the front of the base function tray.
2 Disconnect the platform base chassis and the expansion unit (if applicable), from the AC
power connection.
3 Remove the top cover from the BCM400 platform base chassis (see “Remove the platform
base chassis top cover” on page 161).
4 Attach one end of the grounding strap to your wrist and the other end to a grounded metal
surface.
5 Remove the power supply modules (see Remove a power supply module on page 214).
Continue to the next step in this procedure when complete.
Note: Partially remove the power supply module from the power supply cage. Do not
completely remove the power supply module. IMPORTANT: When the power is on, wait
several seconds before removing the power supply module completely from the power supply
cage to ensure complete electrical discharge.
6 Disconnect the power supply cables from the I/O card, media bay backplane, and hard disk.
7 Unfasten the cable clamp that holds the power and IDE cables in place. The cable clamp is
located under the top cover of the platform base chassis.
8 Run all cables to the rear, exterior of the platform base chassis.
9 Remove the four power supply chassis screws from the rear of the platform base chassis (see
Figure 139). Place the screws in a safe location.
Warning: Protect the hardware components against damage from electrostatic discharge.
Always wear a ground wrist strap before you handle components. Always place the
components in static-free container.
Warning: Risk of shock.
Hazardous voltage levels are maintained for several seconds on removable modules. Do
not completely remove the module from the power supply cage for several seconds after
disengaging the module from the cage.