Huawei Technologies CRFUD-AWS-CL Multi-Mode Transceiver User Manual Site Maintenance

Huawei Technologies Co.,Ltd Multi-Mode Transceiver Site Maintenance

Maintenance Manual

CRFUD maintenance Guide Issue Draft Date 2012-01-10 HUAWEI TECHNOLOGIES CO., LTD.
CRFUD maintenance Guide Issue Draft (2012-01-10) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. ii Copyright © Huawei Technologies Co., Ltd. 2012. All rights reserved. No part of this document may be reproduced or transmitted in any form or by any means without prior written consent of Huawei Technologies Co., Ltd. Trademarks and Permissions and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd. All other trademarks and trade names mentioned in this document are the property of their respective holders. Notice The purchased products, services and features are stipulated by the contract made between Huawei and the customer. All or part of the products, services and features described in this document may not be within the purchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information, and recommendations in this document are provided "AS IS" without warranties, guarantees or representations of any kind, either express or implied. The information in this document is subject to change without notice. Every effort has been made in the preparation of this document to ensure accuracy of the contents, but all statements, information, and recommendations in this document do not constitute the warranty of any kind, express or implied. Huawei Technologies Co., Ltd. Address: Huawei Industrial Base Bantian, Longgang Shenzhen 518129 People's Republic of China Website: http://www.huawei.com Email: support@huawei.com
CRFUD maintenance Guide Contents Issue Draft (2012-01-10) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. iii Contents 1.1 Replacing a CRFU ........................................................................................................................................... 4 1.1.1 Prerequisite ............................................................................................................................................. 4 1.1.2 Procedure ................................................................................................................................................ 5 1.1.3 Follow-up Procedure ............................................................................................................................... 7 1.2 Replacing a CRFUd ......................................................................................................................................... 7 1.2.1 Prerequisite ............................................................................................................................................. 7 1.2.2 Procedure ................................................................................................................................................ 8 1.2.3 Follow-up Procedure ............................................................................................................................. 10
CRFUD maintenance Guide Issue Draft (2012-01-10) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 4 1.1 Replacing a CRFU A CDMA RF unit (CRFU) processes radio frequency (RF) signals for a base transceiver station (BTS). CDMA is short for Code Division Multiple Access. This section describes how to replace a faulty CRFU. 1.1.1 Prerequisite  The following tools and materials are available: electrostatic discharge (ESD) wrist strap, Phillips screwdriver, ESD box or bag, torque wrench, and keys to the front panel and cabinet door.  A new intact CRFU is available. Context Figure 5-2 shows the CRFU cable connection. Figure 1-1 CRFU cable connection Table 1-1 Relationship between CRFU ports and cables Port Cable R1 to R6 RF jumper
CRFUD maintenance Guide Issue Draft (2012-01-10) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 5 1.1.2 Procedure Step 1 Record carrier information. Run the DSP CBTSSECTORCARRIERINFO command to query the IDs of the BTS cells, sectors, and carriers. Step 2 Block carriers. 1. Run the BLK RES command to block all carriers in the sector corresponding to the CRFU. The recommended value of PRI is Low. 2. Run the DSP RES command to check whether the carriers are blocked.  If they are blocked, go to the next step.  Otherwise, go to Step 2.1. Step 3 Power off the CRFU. On the direct current distribution unit-11A (DCDU-11A), set the power switch controlling the power supply for the CRFU to OFF. Step 4 Remove the faulty CRFU. 1. Remove the cables from the faulty CRFU.  Attach a temporary label to the CRFU power cable and remove the cable.  Attach a temporary label to the RF jumper. Then, use a torque wrench to loosen the DIN elbow male connector on the RF jumper and remove the cable.  Attach a temporary label to each common public radio interface (CPRI) cable and remove the cables from the CRFU. 2. Loosen the screws on the CRFU panel. Use a Phillips screwdriver to loosen the screws on the CRFU panel. 3. Remove the CRFU. Pull out the key to the front panel to remove the CRFU, as shown in Figure 5-3.
CRFUD maintenance Guide Issue Draft (2012-01-10) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 6 Figure 1-2 Pulling out the key to the front panel to remove the CRFU Step 5 Install the new CRFU. 1. Push the new CRFU into the subrack along the guide rail. 2. Use a Phillips screwdriver to tighten the screws on the CRFU panel. 3. Connect previously removed cables to the CRFU.  Connect the connector of each CPRI cable to the CPRI_0 port on the CRFU according to the temporary label.  Connect the DIN elbow male connector of the RF jumper to the ANT_TX port on the CRFU and use a torque wrench to tighten the connector with a torque of 25 N·m to 35 N·m (221.27 lbf·in. to 309.78 lbf·in.).  Connect the CRFU power cable and use a Phillips screwdriver to tighten the screws. Step 6 Power on the CRFU. On the DCDU-11A, set the power switch controlling the power supply for the CRFU to ON. Step 7 Load the CRFU software. Run the LST BTSAUTOLD command to check whether auto load is enabled for the BTS.  If Auto Load Flag is ON, the CRFU automatically loads software from the back administration module (BAM).  If Auto Load Flag is OFF, run the DLD CBTSSW command to load the CRFU software. Step 8 Unblock the carriers.
CRFUD maintenance Guide Issue Draft (2012-01-10) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 7 Run the UBL RES command to unblock the carriers. Step 9 Observe the RUN indicator on the CRFU to check whether the CRFU works properly. If the RUN indicator blinks 1 second on and 1 second off, the CRFU works properly. ----End 1.1.3 Follow-up Procedure After the replacement, perform the following operations: 1. Record the version, board name, slot number, and site name of the faulty board. 2. Check whether there is visible physical damage on the board, for example, mechanical parts or plug-ins are distorted, pins are bent or missing, or the board is burnt. 3. Record the information about the fault location process, including the cause of the fault, fault symptoms, alarm name, status of indicators on the board panel, and detailed procedures for identifying and clearing the fault on site. 4. Place the faulty board in an antistatic bag. Then, place the onsite fault record and the antistatic bag in the board box, and store them properly. 1.2 Replacing a CRFUd A CDMA RF unit (CRFUd) processes radio frequency (RF) signals for a base transceiver station (BTS). CDMA is short for Code Division Multiple Access. This section describes how to replace a faulty CRFUd. 1.2.1 Prerequisite  The following tools and materials are available: electrostatic discharge (ESD) wrist strap, Phillips screwdriver, ESD box or bag, torque wrench, and keys to the front panel and cabinet door.  A new intact CRFUd is available. Context Figure 5-4 shows the CRFUd cable connection.
CRFUD maintenance Guide Issue Draft (2012-01-10) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 8 Figure 1-3 CRFUd cable connection Table 1-2 Relationship between CRFUd ports and cables Port Cable R1 to R6 RF jumper 1.2.2 Procedure Step 1 Record carrier information. Run the DSP CBTSSECTORCARRIERINFO command to query the IDs of the BTS cells, sectors, and carriers. Step 2 Block carriers. 1. Run the BLK RES command to block all carriers in the sector corresponding to the CRFUd. The recommended value of PRI is Low. 2. Run the DSP RES command to check whether the carriers are blocked.  If they are blocked, go to the next step.  Otherwise, go to Step 2.1. Step 3 Power off the CRFUd. On the direct current distribution unit-11A (DCDU-11A), set the power switch controlling the power supply for the CRFUd to OFF.
CRFUD maintenance Guide Issue Draft (2012-01-10) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 9 Step 4 Remove the faulty CRFUd. 1. Remove the cables from the faulty CRFUd.  Attach a temporary label to the CRFUd power cable and remove the cable.  Attach a temporary label to the RF jumper. Then, use a torque wrench to loosen the DIN elbow male connector on the RF jumper and remove the cable.  Attach a temporary label to each common public radio interface (CPRI) cable and remove the cables from the CRFUd. 2. Loosen the screws on the CRFUd panel. Use a Phillips screwdriver to loosen the screws on the CRFUd panel. 3. Remove the CRFUd. Pull out the key to the front panel to remove the CRFUd, as shown in Figure 5-5. Figure 1-4 Pulling out the key to the front panel to remove the CRFUd Step 5 Install the new CRFUd. 1. Push the new CRFUd into the subrack along the guide rail. 2. Use a Phillips screwdriver to tighten the screws on the CRFUd panel. 3. Connect previously removed cables to the CRFUd.  Connect the connector of each CPRI cable to the CPRI_0 port on the CRFUd according to the temporary label.  Connect the DIN elbow male connector of the RF jumper to the ANT_TX/RXB port on the CRFUd and use a torque wrench to tighten the connector with a torque of 25 N·m to 35 N·m (221.27 lbf·in. to 309.78 lbf·in.).
CRFUD maintenance Guide Issue Draft (2012-01-10) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 10  Connect the CRFUd power cable and use a Phillips screwdriver to tighten the screws. Step 6 Power on the CRFUd. On the DCDU-11A, set the power switch controlling the power supply for the CRFUd to ON. Step 7 Load the CRFUd software. Run the LST BTSAUTOLD command to check whether auto load is enabled for the BTS.  If Auto Load Flag is ON, the CRFUd automatically loads software from the back administration module (BAM).  If Auto Load Flag is OFF, run the DLD CBTSSW command to load the CRFUd software. Step 8 Unblock the carriers. Run the UBL RES command to unblock the carriers. Step 9 Observe the RUN indicator on the CRFUd to check whether the CRFUd works properly. If the RUN indicator blinks 1 second on and 1 second off, the CRFU works properly. ----End 1.2.3 Follow-up Procedure After the replacement, perform the following operations: 1. Record the version, board name, slot number, and site name of the faulty board. 2. Check whether there is visible physical damage on the board, for example, mechanical parts or plug-ins are distorted, pins are bent or missing, or the board is burnt. 3. Record the information about the fault location process, including the cause of the fault, fault symptoms, alarm name, status of indicators on the board panel, and detailed procedures for identifying and clearing the fault on site. 4. Place the faulty board in an antistatic bag. Then, place the onsite fault record and the antistatic bag in the board box, and store them properly.

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