Huawei CRFU 1900AG, CRFU 800AB, CRFU 1900FCG, CRFU AWS CL User Manual
CRFU Maintenance Guide
Issue 02 Date 2008-11-30
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The information in this document is subject to change without notice. Every effort has been made in
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Contents
1 Replacing the CRFU ...................................................................................................................3
Step 1 Record information of the carriers. .................................................................................4
Step 2 Block the carriers.........................................................................................................4
Step 3 Power off the AC surge protection box...................................................................5
Step 4 Remove the faulty CRFU............................................................................................ 5
Step 5 Install the new CRFU..................................................................................................6
Step 6 Power on the AC surge protection box....................................................................6
Step 7 Load the CPU software and FPGA software of the RRU3606..............................6
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Step 8 Unblock the carriers....................................................................................................7
Step 9 Ensure that the new CRFU module is functional..................................................7
Postrequisite.........................................................................................................................................7
1 Replacing the CRFU
This describes how to replace the faulty CRFU. The CRFU implements the
RF processing function of the BTS.
Prerequisite
The following tools and materials are available: the ESD wrist strap, Phillips
screwdriver, ESD box or bag, torque wrench, and keys to the front panel and
cabinet door.
The new CRFU is available. Ensure that it is intact and its hardware version
is consistent with the faulty CRFU.
Context
Figure 1-1 shows cable connections of the CRFU
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