H3C Technologies H3C S12500-X Series Switches - Manual (Page 77)

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Replacing an MPU or LPU
The replacement procedures of an MPU are the same as those of an LPU. The following illustrates the
replacement of an LPU.
To replace an LPU:
1. Prepare an antistatic mat to place the removed LPU.
2. Wear an ESD wrist strap, and make sure it makes good skin contact and is reliably grounded. For
more information, see "Installing FRUs."
3. Use a Phillips screwdriver to loosen the captive screw on the LPU, as shown in callout 1 on Figure
51 .
4. Move the ejector levers outward to separate the LPU from the backplane, as shown in callout 2
on
Figure 51 .
5. Use one hand to slowly move the LPU outward. Supporting the bottom of the LPU with the other
hand, pull the LPU out of the slot along slide rails, as shown in
Figure 52 .
6. Put the removed LPU on the antistatic mat.
7. Install a new LPU. For the installation procedures, see "Installing FRUs."