RRU
Hardware Maintenance Guide
Issue 16
Date 2015-03-23
HUAWEI TECHNOLOGIES CO., LTD.
Copyright © Huawei Technologies Co., Ltd. 2015. 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 a 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
Issue 16 (2015-03-23) |
Huawei Proprietary and Confidential |
i |
|
Copyright © Huawei Technologies Co., Ltd. |
|||
|
|
RRU |
|
Hardware Maintenance Guide |
About This Document |
About This Document
Purpose
This document describes routine maintenance procedures for an RRU such as equipment maintenance and power-on and power-off operations. It also explains how to replace the RRU and optical modules.
The RRUs involved in this document are the RRUs in SingleRAN, GSM, UMTS, LTE FDD, and LTE TDD modes.
If LTE is used rather than LTE FDD or LTE TDD in this document, the LTE mode can be the LTE FDD mode or LTE TDD mode. If eNodeB is used rather than eNodeB FDD or eNodeB TDD in this document, the eNodeB can be an eNodeB FDD or a eNodeB TDD.
Product Versions
The following table lists the product versions related to this document.
Product Name |
Solution Version |
Product Version |
|
|
|
DBS3900 |
SRAN6.0 and later versions |
V100R004C00 and later |
|
|
versions |
|
|
|
|
GBSS13.0 and later versions |
V100R013C00 and later |
|
|
versions |
|
|
|
|
RAN13.0 and later versions |
V200R013C00 and later |
|
|
versions |
|
|
|
|
eRAN2.1 and later versions |
V100R003C00 and later |
|
|
versions |
|
|
|
|
eRAN2.1 TDD and later |
V100R003C00 and later |
|
versions |
versions |
|
|
|
Intended Audience
This document is intended for:
System engineers
Site maintenance personnel
Issue 16 (2015-03-23) |
Huawei Proprietary and Confidential |
ii |
|
Copyright © Huawei Technologies Co., Ltd. |
|
RRU |
|
Hardware Maintenance Guide |
About This Document |
Organization
1 Changes in RRU Hardware Maintenance Guide
This chapter describes the changes in RRU Hardware Maintenance Guide.
2 Preventative Maintenance Items for an RRU
Preventative maintenance improves the reliability of the RRU. You are advised to perform scheduled maintenance yearly.
3 Powering On and Off an RRU
After an RRU is powered on, check the status of RRU indicators and voltage. Before the RRU is powered off, follow the normal power-off or emergent power-off procedure as required.
4 Replacing an RRU
This chapter describes the procedures and precautions for replacing a common RRU, replacing a blade RRU, and replacing a non-blade RRU with a blade RRU by reusing mounting kits. Replacing an RRU interrupts all the services carried by the RRU and causes alarms.
5 Replacing an Optical Module
An optical module implements optical-electrical conversion, enabling optical transmission between an RRU and other devices. You must disconnect optical fibers from an optical module before replacing the optical module. Disconnecting the optical fibers interrupts the transmission of CPRI signals.
6 Adding RRUs
This chapter describes the procedure and precautions for adding RRUs with different exteriors on a pole.
Conventions
Symbol Conventions
The symbols that may be found in this document are defined as follows.
Symbol |
Description |
|
|
|
Indicates an imminently hazardous situation which, if not |
|
avoided, will result in death or serious injury. |
|
|
|
Indicates a potentially hazardous situation which, if not |
|
avoided, could result in death or serious injury. |
|
|
|
Indicates a potentially hazardous situation which, if not |
|
avoided, may result in minor or moderate injury. |
|
|
Issue 16 (2015-03-23) |
Huawei Proprietary and Confidential |
iii |
|
Copyright © Huawei Technologies Co., Ltd. |
|
RRU |
|
|
Hardware Maintenance Guide |
About This Document |
|
|
|
|
|
Symbol |
Description |
|
|
|
|
|
Indicates a potentially hazardous situation which, if not |
|
|
avoided, could result in equipment damage, data loss, |
|
|
performance deterioration, or unanticipated results. |
|
|
NOTICE is used to address practices not related to personal |
|
|
injury. |
|
|
|
|
|
Calls attention to important information, best practices and |
|
|
tips. |
|
|
NOTE is used to address information not related to personal |
|
|
injury, equipment damage, and environment deterioration. |
|
|
|
General Conventions
Convention |
Description |
|
|
Times New Roman |
Normal paragraphs are in Times New Roman. |
|
|
Boldface |
Names of files, directories, folders, and users are in |
|
boldface. For example, log in as user root. |
|
|
Italic |
Book titles are in italics. |
|
|
Courier New |
Terminal display is in Courier New. |
|
|
Command Conventions
Convention |
Description |
|
|
Boldface |
The keywords of a command line are in boldface. |
|
|
Italic |
Command arguments are in italics. |
|
|
[ ] |
Items (keywords or arguments) in brackets [ ] are optional. |
|
|
{ x | y | ... } |
Optional items are grouped in braces and separated by |
|
vertical bars. One item is selected. |
|
|
[ x | y | ... ] |
Optional items are grouped in brackets and separated by |
|
vertical bars. One item is selected or no item is selected. |
|
|
{ x | y | ... } * |
Optional items are grouped in braces and separated by |
|
vertical bars. A minimum of one item or a maximum of all |
|
items can be selected. |
|
|
[ x | y | ... ] * |
Optional items are grouped in brackets and separated by |
|
vertical bars. Several items or no item can be selected. |
|
|
Issue 16 (2015-03-23) |
Huawei Proprietary and Confidential |
iv |
|
Copyright © Huawei Technologies Co., Ltd. |
|
RRU |
|
Hardware Maintenance Guide |
About This Document |
GUI Conventions
Convention |
Description |
|
|
Boldface |
Buttons, menus, parameters, tabs, windows, and dialog titles |
|
are in boldface. For example, click OK. |
|
|
> |
Multi-level menus are in boldface and separated by the ">" |
|
signs. For example, choose File > Create > Folder. |
|
|
Keyboard Operation
Format |
Description |
|
|
Key |
Press the key. For example, press Enter and press Tab. |
|
|
Key 1+Key 2 |
Press the keys concurrently. For example, pressing |
|
Ctrl+Alt+A means the three keys should be pressed |
|
concurrently. |
|
|
Key 1, Key 2 |
Press the keys in turn. For example, pressing Alt, A means |
|
the two keys should be pressed in turn. |
|
|
Mouse Operation
Action |
Description |
|
|
Click |
Select and release the primary mouse button without |
|
moving the pointer. |
|
|
Double-click |
Press the primary mouse button twice continuously and |
|
quickly without moving the pointer. |
|
|
Drag |
Press and hold the primary mouse button and move the |
|
pointer to a certain position. |
|
|
Issue 16 (2015-03-23) |
Huawei Proprietary and Confidential |
v |
|
Copyright © Huawei Technologies Co., Ltd. |
|
RRU |
|
Hardware Maintenance Guide |
Contents |
Contents
About This Document.................................................................................................................... |
ii |
|
1 Changes in RRU Hardware Maintenance Guide.................................................................... |
1 |
|
2 Preventative Maintenance Items for an RRU .......................................................................... |
8 |
|
3 Powering On and Off an RRU.................................................................................................. |
10 |
|
3.1 Powering On an RRU ................................................................................................................................................. |
10 |
|
3.2 |
Powering Off an RRU................................................................................................................................................. |
11 |
4 Replacing an RRU....................................................................................................................... |
13 |
|
4.1 |
Preparations Before Replacement............................................................................................................................... |
13 |
4.2 |
Replacing an RRU Using Assembled Mounting Kits ................................................................................................. |
15 |
4.2.1 Replacing an RRU Using a Mounting Kit for a Common RRU .............................................................................. |
15 |
|
4.2.2 Replacing an RRU Using a Mounting Kit for a Blade RRU ................................................................................... |
20 |
|
4.3 |
Replacing an RRU Using Non-assembled Mounting Kits.......................................................................................... |
23 |
4.4 |
Replacing a Non-Blade RRU with a Blade RRU ....................................................................................................... |
27 |
4.5 |
Replacing Blade RRUs in the ICR and Adding Blade RRUs to the ICR.................................................................... |
33 |
4.6 |
Operations After Replacement .................................................................................................................................... |
38 |
5 Replacing an Optical Module................................................................................................... |
40 |
|
6 Adding RRUs ............................................................................................................................... |
43 |
Issue 16 (2015-03-23) |
Huawei Proprietary and Confidential |
vi |
|
Copyright © Huawei Technologies Co., Ltd. |
|
RRU |
|
Hardware Maintenance Guide |
1 Changes in RRU Hardware Maintenance Guide |
1 Changes in RRU Hardware Maintenance
Guide
This chapter describes the changes in RRU Hardware Maintenance Guide.
16 (2015-03-23)
This is the sixteenth commercial release.
Compared with issue 15 (2015-02-10), this issue does not include any new information.
Compared with issue 15 (2015-02-10), this issue includes the following change:
Topic |
Change Description |
|
|
3.2 Powering Off an RRU |
Added the procedure of checking whether |
|
the power-off operation succeeds. |
|
|
4.2.1 Replacing an RRU Using a Mounting |
Added the procedure and caution. |
Kit for a Common RRU |
|
4.2.2 Replacing an RRU Using a Mounting |
|
Kit for a Blade RRU |
|
|
|
Compared with issue 15 (2015-02-10), no information is deleted from this issue.
15 (2015-02-10)
This is the fifteenth commercial release.
Compared with issue 14 (2015-01-30), this issue does not include any new information.
Compared with issue 14 (2015-01-30), this issue includes the following change:
Topic |
Change Description |
|
|
4.4 Replacing a Non-Blade RRU with a |
Modified the context and procedure of |
Blade RRU |
replacing a Non-Blade RRU with a Blade |
|
RRU. |
|
|
Issue 16 (2015-03-23) |
Huawei Proprietary and Confidential |
1 |
|
Copyright © Huawei Technologies Co., Ltd. |
|
RRU |
|
Hardware Maintenance Guide |
1 Changes in RRU Hardware Maintenance Guide |
Compared with issue 14 (2015-01-30), no information is deleted from this issue.
14 (2015-01-30)
This is the fourteenth commercial release.
Compared with issue 13 (2014-11-10), this issue does not include any new information. Compared with issue 13 (2014-11-10), this issue includes the following change:
Topic |
Change Description |
|
|
4.4 Replacing a Non-Blade RRU with a |
Modified the context and procedure of |
Blade RRU |
replacing a Non-Blade RRU with a Blade |
|
RRU. |
|
|
Compared with issue 13 (2014-11-10), no information is deleted from this issue.
13 (2014-11-10)
This is the thirteen commercial release.
Compared with issue 12 (2014-10-20), this issue does not include any new information. Compared with issue 12 (2014-10-20), this issue includes the following change:
Topic |
Change Description |
|
|
4.4 Replacing a Non-Blade RRU with a |
Modified the context and procedure of |
Blade RRU |
replacing a Non-Blade RRU with a Blade |
|
RRU. |
|
|
Compared with issue 12 (2014-10-20), no information is deleted from this issue.
12 (2014-10-20)
This is the twelfth commercial release.
Compared with issue 11 (2014-08-20), this issue does not include any new information. Compared with issue 11 (2014-08-20), this issue includes the following change:
Topic |
Change Description |
|
|
4.4 Replacing a Non-Blade RRU with a |
Added the figure of waterproofing a |
Blade RRU |
connector of the alarm cable. |
|
|
Compared with issue 11 (2014-08-20), no information is deleted from this issue.
11 (2014-08-20)
This is the eleventh commercial release.
Issue 16 (2015-03-23) |
Huawei Proprietary and Confidential |
2 |
|
Copyright © Huawei Technologies Co., Ltd. |
|
RRU |
|
Hardware Maintenance Guide |
1 Changes in RRU Hardware Maintenance Guide |
Compared with issue 10 (2014-01-20), this issue does not include any new information.
Compared with issue 10 (2014-01-20), this issue includes the following change:
Topic |
Change Description |
|
|
4.5 Replacing Blade RRUs in the ICR and |
Added the description that the 18 L blade |
Adding Blade RRUs to the ICR |
RRU does not support the indoor |
|
centralized installation. |
|
|
Compared with issue 10 (2014-01-20), no information is deleted from this issue.
10 (2014-01-20)
This is the tenth commercial release.
Compared with issue 09 (2013-09-26), this issue does not include any new information. Compared with issue 09 (2013-09-26), this issue includes the following change:
Topic |
Change Description |
|
|
|
|
4.1 |
Preparations Before Replacement |
Added the information about U2000. |
|
|
|
4.6 |
Operations After Replacement |
|
|
|
|
6 Adding RRUs |
|
|
|
|
|
Compared with issue 09 (2013-09-26), no information is deleted from this issue.
09 (2013-09-26)
This is the ninth commercial release.
Compared with issue 08 (2013-07-30), this issue includes the following new information: 4.5 Replacing Blade RRUs in the ICR and Adding Blade RRUs to the ICR.
Compared with issue 08 (2013-07-30), this issue includes the following change:
Topic |
Change Description |
|
|
5 Replacing an Optical Module |
Optimized the description of the function |
|
that the optical modules are hot-swappable. |
|
|
Compared with issue 08 (2013-07-30), no information is deleted from this issue.
08 (2013-07-30)
This is the eighth commercial release.
Compared with issue 07 (2013-05-30), this issue includes the following new information:
Issue 16 (2015-03-23) |
Huawei Proprietary and Confidential |
3 |
|
Copyright © Huawei Technologies Co., Ltd. |
|
RRU |
|
Hardware Maintenance Guide |
1 Changes in RRU Hardware Maintenance Guide |
4.1 Preparations Before Replacement
4.4 Replacing a Non-Blade RRU with a Blade RRU
4.6 Operations After Replacement
6 Adding RRUs
Compared with issue 07 (2013-05-30), this issue includes the following changes:
|
Topic |
|
|
Change Description |
|
|
|
|
|
|
|
|
4.2.1 Replacing an RRU Using a Mounting |
|
|
Added the scenario where attachment plate |
|
|
Kit for a Common RRU |
|
|
B for a common RRU is installed together |
|
|
|
|
|
with mounting kit A for a common RRU |
|
|
|
|
|
and the figure showing the scenario. |
|
|
|
|
|
|
|
|
4.2.1 Replacing an RRU Using a Mounting |
|
|
Changed preparations before replacement to |
|
|
Kit for a Common RRU |
|
|
4.1 Preparations Before Replacement and |
|
|
|
|
|
operations after replacement to 4.6 |
|
|
4.2.2 Replacing an RRU Using a Mounting |
|
|
|
|
|
|
|
Operations After Replacement. |
|
|
|
Kit for a Blade RRU |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Compared with issue 07 (2013-05-30), no information is deleted from this issue.
07 (2013-05-30)
This is the seventh commercial release.
Compared with issue 06 (2013-04-28), this issue includes the following change:
Topic |
Change Description |
|
|
5 Replacing an Optical Module |
Changed the description "An optical module |
|
is hot-swappable if the CPRI port is not |
|
changed." to "An optical module or a CPRI |
|
fiber optic cable cannot be inserted into or |
|
removed from this CPRI port when the |
|
power supply is connected." |
|
|
Compared with issue 06 (2013-04-28), no information is deleted from or included in this issue.
06 (2013-04-28)
This is the sixth commercial release.
Compared with issue 05 (2012-12-30), this issue includes the following changes:
|
Topic |
|
Change Description |
|
|
|
|
|
|
|
4.2.1 Replacing an RRU Using a Mounting |
Added the description of replacing an RRU |
|
|
|
Kit for a Common RRU |
using a mounting kit for a common RRU. |
|
|
|
|
|
|
|
|
5 Replacing an Optical Module |
Added the steps of powering on and off an |
|
|
|
|
|
|
|
|
|
|
|
|
Issue 16 (2015-03-23) |
Huawei Proprietary and Confidential |
4 |
||
|
|
Copyright © Huawei Technologies Co., Ltd. |
|
RRU |
|
|
|
Hardware Maintenance Guide |
1 Changes in RRU Hardware Maintenance Guide |
||
|
|
|
|
|
Topic |
|
Change Description |
|
|
|
|
|
|
|
RRU. |
|
|
|
|
Compared with issue 05 (2012-12-30), no information is deleted from or included in this issue.
05 (2012-12-30)
This is the fifth commercial release.
Compared with issue 04 (2012-09-15), this issue includes the following new information:
4.2.2 Replacing an RRU Using a Mounting Kit for a Blade RRU Compared with issue 04 (2012-09-15), this issue includes the following changes:
Topic |
Change Description |
|
|
3.1 Powering On an RRU |
Optimized the contents in these sections. |
|
|
3.2 Powering Off an RRU |
|
|
|
4.2.1 Replacing an RRU Using a Mounting |
Modified the title and added the information |
Kit for a Common RRU |
of RRU mounting kits. |
|
|
Compared with issue 04 (2012-09-15), no information is deleted from this issue.
04 (2012-09-15)
This is the fourth commercial release.
Compared with issue 03 (2012-07-20), this issue does not include any new information. Compared with issue 03 (2012-07-20), this issue includes the following change:
Topic |
Change Description |
|
|
4.2.1 Replacing an RRU Using a Mounting |
Optimized the contents in these sections. |
Kit for a Common RRU |
|
|
|
5 Replacing an Optical Module |
|
|
|
Compared with issue 03 (2012-07-20), no information is deleted from this issue.
03 (2012-07-20)
This is the third commercial release.
Compared with issue 02 (2012-02-10), this issue does not include any new information. Compared with issue 02 (2012-02-10), this issue includes the following change:
Issue 16 (2015-03-23) |
Huawei Proprietary and Confidential |
5 |
|
Copyright © Huawei Technologies Co., Ltd. |
|
RRU |
|
|
|
Hardware Maintenance Guide |
1 Changes in RRU Hardware Maintenance Guide |
||
|
|
|
|
|
Topic |
|
Change Description |
|
|
|
|
|
4.2.1 Replacing an RRU Using a Mounting |
|
Optimized the contents in this section. |
|
Kit for a Common RRU |
|
|
|
|
|
|
Compared with issue 02 (2012-02-10), no information is deleted from this issue.
02 (2012-02-10)
This is the second commercial release.
Compared with issue 01 (2011-11-30), this issue does not include any new information. Compared with issue 01 (2011-11-30), this issue includes the following change:
Topic |
Change Description |
|
|
5 Replacing an Optical Module |
Added the steps of querying the type of a |
|
faulty optical module. |
|
|
Compared with issue 01 (2011-11-30), no information is deleted from this issue.
01 (2011-11-30)
This is the first commercial release.
This release incorporates the following documents to RRU Hardware Maintenance Guide.
RRU3201 Hardware Maintenance Guide
RRU3203 Hardware Maintenance Guide
RRU3220 Hardware Maintenance Guide
RRU3222 Hardware Maintenance Guide
RRU3808 Hardware Maintenance Guide
RRU3221 Hardware Maintenance Guide
RRU3240 Hardware Maintenance Guide
RRU3004 (DC) Hardware Maintenance Guide
RRU3004 (AC) Hardware Maintenance Guide
RRU3008 (AC) V1 Hardware Maintenance Guide
RRU3008 (AC) V2 Hardware Maintenance Guide
RRU3008 (DC) V1 Hardware Maintenance Guide
RRU3008 (DC) V2 Hardware Maintenance Guide
RRU3908 (AC) V1 Hardware Maintenance Guide
RRU3908 (AC) V2 Hardware Maintenance Guide
RRU3908 (DC) V1 Hardware Maintenance Guide
RRU3908 (DC) V2 Hardware Maintenance Guide
RRU3804&RRU3901E&3806 Hardware Maintenance Guide
RRU3804&RRU3901E&3806 (AC) Hardware Maintenance Guide
Issue 16 (2015-03-23) |
Huawei Proprietary and Confidential |
6 |
|
Copyright © Huawei Technologies Co., Ltd. |
|
RRU |
|
Hardware Maintenance Guide |
1 Changes in RRU Hardware Maintenance Guide |
RRU3805 Hardware Maintenance Guide
RRU3808 Hardware Maintenance Guide
RRU3828 Hardware Maintenance Guide
RRU3928 Hardware Maintenance Guide
RRU3929 Hardware Maintenance Guide
Issue 16 (2015-03-23) |
Huawei Proprietary and Confidential |
7 |
|
Copyright © Huawei Technologies Co., Ltd. |
|
RRU |
|
Hardware Maintenance Guide |
2 Preventative Maintenance Items for an RRU |
2 Preventative Maintenance Items for an RRU
Preventative maintenance improves the reliability of the RRU. You are advised to perform scheduled maintenance yearly.
When working at heights, the maintenance personnel need to exercise caution to avoid falling of objects, which may cause injuries or death. In addition, the maintenance personnel must always wear helmets in the working area and avoid dangerous areas.
The items in the following checklist are not mandatory but strongly recommended. Table 2-1 lists the preventative maintenance items for an RRU.
Table 2-1 Preventative maintenance items for an RRU
|
No. |
Item |
|
|
|
|
|
|
1 |
All RRUs are properly installed and in good condition. |
|
|
|
|
|
|
2 |
The cable seals at the entry points of the cabinet are in good condition. |
|
|
|
|
|
|
3 |
All ground cables are properly grounded. |
|
|
|
|
|
|
4 |
All RF cables are free from wear, cuts, cracks, or other damage. |
|
|
|
|
|
|
5 |
All RF cable connectors are sealed properly. |
|
|
|
|
|
|
6 |
All RF cable conduits are in good condition. |
|
|
|
|
|
|
7 |
All power cables are free from wear, cuts, cracks, or other damage. |
|
|
|
|
|
|
8 |
All power cable connectors are in good condition. |
|
|
|
|
|
|
9 |
All power cable conduits are in good condition. |
|
|
|
|
|
|
10 |
All shield layers of power cables are in good condition. |
|
|
|
|
|
|
11 |
All power cables are in good condition. |
|
|
|
|
|
|
|
|
|
Issue 16 (2015-03-23) |
Huawei Proprietary and Confidential |
8 |
|
|
|
Copyright © Huawei Technologies Co., Ltd. |
|
RRU |
|
|
|
Hardware Maintenance Guide |
2 Preventative Maintenance Items for an RRU |
||
|
|
|
|
|
No. |
Item |
|
|
|
|
|
|
12 |
All CPRI optical fibers are free from wear, cuts, cracks, or other damage. |
|
|
|
|
|
|
13 |
All screws are tightened on the cover plate of the maintenance cavity. |
|
|
|
|
|
|
14 |
All RET cables (optional) are free from wear, cuts, cracks, or other damage. |
|
|
|
|
|
|
15 |
All RET cable (optional) connectors are sealed properly. |
|
|
|
|
|
|
16 |
All alarm cables (optional) are installed and free from any damage. |
|
|
|
|
|
|
17 |
All monitoring cables (optional) are installed and free from any damage. |
|
|
|
|
|
If any of the requirements in the checklist is not met, perform the following corrective actions.
1.Tighten all connections.
2.Report the problems to the supervisor so that the qualified engineers can be assigned to maintain the parts on the tower.
Issue 16 (2015-03-23) |
Huawei Proprietary and Confidential |
9 |
|
Copyright © Huawei Technologies Co., Ltd. |
|
RRU |
|
Hardware Maintenance Guide |
3 Powering On and Off an RRU |
3 Powering On and Off an RRU
About This Chapter
After an RRU is powered on, check the status of RRU indicators and voltage. Before the RRU is powered off, follow the normal power-off or emergent power-off procedure as required.
3.1 Powering On an RRU
This section describes how to power on an RRU. Observe the indicators on the RRU to check the running status.
3.2 Powering Off an RRU
An RRU can be powered off in two ways: normal power-off and emergency power-off. You need to perform a normal power-off in scenarios such as an equipment swap or foreseeable regional blackout, and you need to perform an emergency power-off in emergencies such as a fire, smoke, or water damage in the equipment room.
3.1 Powering On an RRU
This section describes how to power on an RRU. Observe the indicators on the RRU to check the running status.
Prerequisites
The RRU hardware is installed and RRU cable connections are secure.
The input voltage of a DC RRU ranges from -36 V DC to -57 V DC.
The input voltage of an AC RRU ranges from 100 V AC to 240 V AC.
Context
After unpacking an RRU, you must power on it within 24 hours. If you power off the RRU for maintenance, you must restore power to the RRU within 24 hours.
Issue 16 (2015-03-23) |
Huawei Proprietary and Confidential |
10 |
|
Copyright © Huawei Technologies Co., Ltd. |
|
RRU |
|
Hardware Maintenance Guide |
3 Powering On and Off an RRU |
Procedure
Step 1 On the power epuipment for the RRU, set the corresponding circuit breaker to ON or insert a corresponding EPC connector.
Do not look into the optical module without eye protection after the RRU is powered on.
Step 2 Wait 3 to 5 minutes, and then check the status of the indicators on the RRU. For details, see section "RRU Indicators" in the hardware description of the corresponding RRU.
If RRUs are cascaded, check the status of all RRU indicators.
Step 3 Take corresponding actions based on the status of the indicators.
If... |
Then... |
|
|
The RRU is working properly |
End the power-on check task. |
|
|
The RRU is faulty |
On the power equipment for the RRU, set |
|
the corresponding circuit breaker to OFF or |
|
remove the corresponding EPC connector. |
|
Rectify the fault, and then go to Step 1. |
|
|
----End |
|
3.2 Powering Off an RRU
An RRU can be powered off in two ways: normal power-off and emergency power-off. You need to perform a normal power-off in scenarios such as an equipment swap or foreseeable regional blackout, and you need to perform an emergency power-off in emergencies such as a fire, smoke, or water damage in the equipment room.
Procedure
Normal power-off
If RRUs are cascaded, services carried on the lower-level RRU may be interrupted during the replacement of the upper-level RRU.
1.On the power equipment for the RRU, set the corresponding circuit breaker to OFF or remove the corresponding EPC connector.
Emergency power-off
Issue 16 (2015-03-23) |
Huawei Proprietary and Confidential |
11 |
|
Copyright © Huawei Technologies Co., Ltd. |
|