Removal and Replacement Procedures
5-31
Removal
1.
Shut down the operating system and turn the keyswitch to Off.
2.
At the rear of the cabinet, shut the main circuit breaker off by pushing down
the handle.
3.
Disconnect the system power cord.
4.
From the front of the cabinet, remove the three H7506 power supplies by
loosening the two screws in the front of each power supply and pulling out
the power supply.
5.
Remove the two screws (see Figure 5-10) attaching the power rack assembly
to the right and left cabinet rails.
6.
At the rear of the cabinet, remove the four screws (see Figure 5-10)
attaching the power rack assembly to the right and left cabinet rails.
7.
Unplug the AC cables from the AC distribution box.
8.
Slide the AC distribution box from the rear of the cabinet.
Replacement
•
Reverse the steps in the Removal procedure.
Verification
Power up the system and check the power supply LEDs.
H7506 Power Supply
You can replace a failed power supply, or add another power supply, while the
system is running. To remove the H7506 power supplies (see EK-H7506-IN,
H7506 Power Supply Installation
), loosen the two screws in the front of the
power supply and pull out. Push the new power supply into the slot and tighten
the two screws. Check that both LEDs (see Figure 2-7) are lit when the system
is operational.