Replacing The Power Backplane - NEC EXPRESS5800/120Rc-2 Service Manual

Replacing the Power Backplane

1. Power off the system and ensure it is disconnected from the AC power
source.
Your system weighs approximately 65 pounds (29.25 kg). If
your system contains numerous optional boards and
peripheral devices, it will weigh more. To avoid personal
injury, make sure you have someone help you lift or move
the system.
2. With the assistance of another person, remove the system from the system
rack and place it on a clean surface.
3. Remove the top cover as described earlier in this chapter.
4. Remove the power supply following procedures found in this chapter. If an
optional power supply is installed, remove it also.
5. Remove and tag all cables connected to the power backplane.
6. Remove the thumbscrew securing the power backplane to the system
chassis. See Figure 62, D.
4-54 Disassembly and Reassembly
!
WARNING
A. Front Panel
B. Fan
C. Power Backplane
D. Thumbscrew
Figure 4-62. Power Backplane
A
B
C
D