Opening The Cover Plate Of A Prru Cabling Cavity - Huawei DBS3900 Installation Manual

DBS3900 LampSite
Installation Guide
1.
2.
3.
4.
Step 6 Route the cable by following the instructions in section "Cabling Requirements" and use cable
ties to bind the cable.
Step 7 Label the installed cable. For details, see section 15.5 Attaching a Sign Plate Label and
Attaching the Color Ring.
----End

9.4.9 Opening the Cover Plate of a pRRU Cabling Cavity

This section describes the procedure for opening the cover plate of a pRRU cabling cavity.
Procedure
Step 1 Wear ESD gloves.
Take proper ESD protection measures, for example, wear ESD gloves, to prevent electrostatic
damage to boards, modules, or electronic components.
Step 2 Use an M6 inner hexagon screwdriver to loosen the screw on the cover plate of the pRRU
cabling cavity, and open the cover plate, as shown in Figure 9-27.
Issue 08 (2016-05-30)
Ensure that dustproof caps are not removed.
Wrap one layer of PVC insulation tape on each connector from bottom up.
Wrap three layers of waterproof tape on each connector, first from bottom up, then from
top down, and finally from bottom up. Wrap each layer of the tape around the connector
tightly.
Wrap three layers of PVC insulation tape on each connector, first from bottom up, then
from top down, and finally from bottom up. Wrap each layer of the tape around the
connector tightly.
 When wrapping waterproof tape, stretch the tape evenly until it is twice of the original length. When
wrapping PVC insulation tape, do not stretch it.
 Wrap each layer of tape around each connector tightly and neatly, and ensure that the adhesive
surface of each layer of tape overlaps more than 50% of the lower layer.

When cutting off a cable tie, reserve a surplus length of 3 mm (0.12 in.) to 5 mm (0.20 in.).
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
9 Installing a pRRU3907 or pRRU3916
199