Figure 4-13 Position Of The Dcdu-03B - Huawei BBU3900 Hardware Maintenance Manual

4 Replacing the Components in the OMB
l
Procedure
Step 1 Power off the DCDU-03B.
Step 2 Wear an ESD wrist strap or a pair of ESD gloves.
Take proper ESD protection measures, for example, wear an ESD wrist strap or a pair of ESD
gloves, to prevent electrostatic damage to the boards, modules, or electronic components.
Step 3 Record all the cable connections on the panel of the board to be replaced.
Step 4 Disconnect the power cables from the DCDU-03B, as shown in
4-10

Figure 4-13 Position of the DCDU-03B

Replacing the DCDU-03B disrupts all the services carried by the base station. Therefore,
the DCDU-03B should be replaced within 20 minutes.
CAUTION
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Hardware Maintenance Guide
DCDU
Figure 4-14.
Issue 03 (2010-06-05)
BBU3900