Replacing The Rf Jumpers Of The Bts3702E - Huawei DBS3900 WiMAX Maintenance Manual

7 Replacing the BTS3702E Cables
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Procedure
Step 1 Route the new optical fibers in the same way as the faulty optical fibers are routed.
Step 2 Press the latch on the LC connector of the faulty optical fiber, and then remove the LC connector
from the optical module. Remove the other connector from the peer device.
Step 3 Plug the LC connector of the new optical fiber into the same optical module according to the
label on the optical fiber. Install the other connector on the peer device.
Step 4 Attach an engineering label to each new optical fiber. The content on each engineering label
should be the same as that on the replaced fiber.
Step 5 Arrange and bind the new optical fibers.
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Later Measures
Check the following items after replacing the faulty optical fiber:
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Contact the local Huawei office to handle the faulty optical fibers.

7.4 Replacing the RF Jumpers of the BTS3702E

The RF jumper of the BTS3702E is used to receive and transmit the RF signals. When the faulty
RF jumper is confirmed, replace the faulty RF jumper.
Prerequisite
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Context
Before replacing the RF jumpers, you must power off the BTS3702E. This disrupts all the
services carried by the sectors associated with the BTS3702E.
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CAUTION
Take proper ESD prevention measures. For example, wear ESD wrist straps or gloves to
prevent boards, modules, and electronic components from being destroyed by static discharge
from the human body.
Protect your eyes against the laser emitted by the optical fiber that is removed from the optical
module.
The optical fiber of the correct type is properly connected.
All related alarms are cleared in the alarm management system.
Check the quantity and types of the faulty RF jumpers and prepare new RF jumpers.
The required tools and materials are ready. The tools and materials include the ESD gloves,
screwdriver, waterproof tape, insulation tape, and feeder cable cutting tool.
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
DBS3900 WiMAX
Site Maintenance Guide (Draft)
Issue 01 (2009-11-30)