Huawei PDU8000 User Manual page 150

PDU8000 Modular Precision PDC
User Manual (FusionModule2000 V2.0)
Procedure
Step 1 Disconnect the CAN and RS485_1 (or FE) communications cables from the MDU, as shown
in Figure
Step 2 Remove the four screws from the MDU and set them aside.
Figure 8-15 Replacing an MDU
Step 3 Hold the MDU front panel by one hand, and push out the MDU from the fastener on the front
panel by the other hand.
Step 4 Align the new MDU with the mounting holes, snap the bottom of the new MDU into the
fastener on the front panel until you hear a slight click sound, and push the top of the MDU in
place.
Step 5 Secure the new MDU to the front panel using the screws you removed.
Step 6 Connect the CAN and RS485_1 communications cable to the MDU.
Step 7 After the MDU is replaced, the new MDU automatically checks whether its configurations are
consistent with the rack configuration during startup. If an inconsistency is found, the MDU
displays a synchronization dialog box, as shown in
1.
2.
Issue 02 (2017-02-24)
The MDU can be replaced online without disconnecting the power supply.
8-15.
When removing cables, label the cables with corresponding terminal ports for later connection.
Click OK to synchronize the configurations. The MDU restarts.
If you click Cancel (not recommended), the configurations will not be synchronized, and
the MDU displays the same dialog box after the next startup.
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8 Maintenance Guide
Figure 8-16.
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