Huawei DBS3900 Installation Manual page 150

LampSite
Site Maintenance Guide
l Take proper ESD protection measures, such as wearing ESD gloves to prevent electrostatic
l A pRRU3901 that has just been powered off has afterheat. Take scald-proof measures when
Step 3 Power off the pRRU3901. For details, see
Step 4 Record the cable connections.
Step 5 Take insulation measures, and then remove all cables from the pRRU3901.
Step 6 Hold the pRRU3901 case in one hand and pull the hoist clamp on the mounting bracket with the
other hand, as shown in step a in
pRRU3901, as shown in step b in
Figure 8-1 Removing the pRRU3901
Step 7 Install the new pRRU3901. The installation must be based on different scenarios. For details,
see LampSite Installation Guide.
Take proper ESD protection measures, such as wearing an ESD wrist strap or ESD gloves to
prevent electrostatic damage to the boards, modules, or electronic components.
Step 8 Connect the cables to the pRRU3901 according to the recorded positions.
Step 9 Power on the pRRU3901 by referring to
Issue 05 (2015-01-15)
CAUTION
damage to the boards, modules, or electronic components.
removing the pRRU3901.
NOTICE
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5.2 Powering Off the
Figure 8-1. Then, remove the mounting bracket from the
Figure 8-1.
5.1 Powering On the
8 Replacing the pRRU3901
pRRU3901.
pRRU3901.
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