Huawei SmartAX MA5612 Operating manual

SmartAX MA5612 Multi-service Access Module
V800R311C00
Maintenance Guide
Issue 01
Date 2012-07-25
HUAWEI TECHNOLOGIES CO., LTD.

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 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: [email protected]
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About This Document
Intended Audience
This document provides the routine maintenance guide and troubleshooting guide to the
MA5612, and introduces the methods for replacing the parts. This document helps the intended
audience to perform the routine maintenance, replace the parts, and rectify the faults on the
MA5612.
This document is intended for:
lSystem maintenance engineers
lField maintenance engineers
lNetwork monitoring engineers
NOTE
Based on your requirements, the packet capturing feature may involve using, obtaining, or saving some
information about users' communications for the purpose of safeguarding network operation and protecting
services. Huawei alone is unable to collect or save the content of users' communications. It is suggested that you
activate the interception-related functions based on the applicable laws and regulations in terms of purpose and
scope of usage. You are obligated to take considerable measures to ensure that the content of users'
communications is fully protected when the content is being used and saved.
Symbol Conventions
The following symbols may be found in this document. They are defined as follows.
Symbol Description
Indicates a hazard with a high level of risk which, if not
avoided, will result in death or serious injury.
Indicates a hazard with a medium or low level of risk which,
if not avoided, could result in minor or moderate injury.
Indicates a potentially hazardous situation that, if not
avoided, could cause equipment damage, data loss, and
performance degradation, or unexpected results.
Indicates a tip that may help you solve a problem or save
your time.
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Symbol Description
Provides additional information to emphasize or
supplement important points of the main text.
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 square brackets [ ] are
optional.
{ x | y | ... } Alternative items are grouped in braces and separated by
vertical bars. One is selected.
[ x | y | ... ] Optional alternative items are grouped in square brackets
and separated by vertical bars. One or none is selected.
{ x | y | ... } * Alternative items are grouped in braces and separated by
vertical bars. A minimum of one or a maximum of all can
be selected.
GUI Conventions
Convention Description
Boldface Buttons, menus, parameters, tabs, window, 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.
Update History
Updates between document issues are cumulative. Therefore, the latest document issue contains
all updates made in previous issues.
Issue 01 (2012-07-25)
Compared with issue 01 (2011-10-28) of V800R310C00, V800R311C00 has the following
changes:
Modified:
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The contents in 4 Troubleshooting Services Transmitted Through a GE Port and 5
Troubleshooting Services Transmitted Through a GPON Port are optimized.
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Contents
About This Document.....................................................................................................................ii
1 Overview.........................................................................................................................................1
1.1 Maintenance Purpose..........................................................................................................................................2
1.2 Maintenance Principle........................................................................................................................................2
1.3 Maintenance Tools.............................................................................................................................................4
2 Field Maintenance Guide............................................................................................................6
2.1 Checking the Grounding of the Device..............................................................................................................7
2.2 Cleaning the Connector of the Optical Fiber......................................................................................................8
2.3 Cleaning the Air Filter of the Cabinet..............................................................................................................10
2.4 Checking Batteries............................................................................................................................................11
2.5 Checking the surge protector............................................................................................................................13
3 Engineers' Must-Read.................................................................................................................15
3.1 Engineer Skill Requirements............................................................................................................................16
3.2 Troubleshooting Precautions............................................................................................................................16
3.3 Precautions for Replacing a Part......................................................................................................................17
3.4 Troubleshooting Procedure...............................................................................................................................21
3.5 Frequently Used Methods for Troubleshooting................................................................................................23
3.6 Contacting Huawei for Assistance...................................................................................................................26
4 Troubleshooting Services Transmitted Through a GE Port ...............................................29
4.1 Troubleshooting LAN Internet Service............................................................................................................30
4.1.1 Troubleshooting the Failure to Access the Internet.................................................................................30
4.1.2 Troubleshooting the Failure to Obtain an IP Address by PPPoE Dialup................................................32
4.1.3 Troubleshooting the Failure to Obtain an IP Address in DHCP Mode...................................................39
4.1.4 Troubleshooting Low Internet Access Rate............................................................................................44
4.1.5 Troubleshooting Frequent Interruptions in Internet Service...................................................................47
4.2 Troubleshooting the Multicast Service.............................................................................................................50
4.2.1 Failure to Go Online of a Multicast User................................................................................................50
4.2.2 Blank Screen After Ordering a Program.................................................................................................59
4.2.3 Pixelation in a Multicast Program...........................................................................................................72
4.3 Troubleshooting VoIP PSTN Service ..............................................................................................................78
4.3.1 No Power Feed After Offhook................................................................................................................78
4.3.2 No Tone After Offhook...........................................................................................................................81
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4.3.3 Busy Tone After Offhook........................................................................................................................84
4.3.4 Continuous Dial Tone During Dialing....................................................................................................88
4.3.5 Called Party's Phone Does Not Ring.......................................................................................................90
4.3.6 One-Way Audio or No Audio During Communication..........................................................................93
4.3.7 Noise in Communication.........................................................................................................................95
4.3.8 Discontinuous Communication...............................................................................................................99
4.3.9 Low Communication Voice...................................................................................................................100
4.4 Troubleshooting Fax and Modem Services ...................................................................................................103
4.4.1 Fax Service Failures..............................................................................................................................103
4.4.2 Modem Service Failures........................................................................................................................106
4.5 H.248-Based ISDN PRA Service Troubleshooting........................................................................................109
4.6 SIP-Based ISDN PRA Service Fault Troubleshooting...................................................................................110
5 Troubleshooting Services Transmitted Through a GPON Port.......................................112
5.1 Troubleshooting LAN Internet Service..........................................................................................................113
5.1.1 Troubleshooting the Failure to Access the Internet...............................................................................113
5.1.2 Troubleshooting the Failure to Obtain an IP Address by PPPoE Dialup..............................................115
5.1.3 Troubleshooting the Failure to Obtain an IP Address in DHCP Mode.................................................123
5.1.4 Troubleshooting Low Internet Access Rate..........................................................................................129
5.1.5 Troubleshooting Frequent Interruptions in Internet Service.................................................................133
5.2 Troubleshooting Multicast Service.................................................................................................................135
5.2.1 Failure to Go Online of a Multicast User..............................................................................................136
5.2.2 Blank Screen After Ordering a Program...............................................................................................144
5.2.3 Pixelation in a Multicast Program.........................................................................................................161
5.3 Troubleshooting VoIP PSTN Service.............................................................................................................167
5.3.1 No Power Feed After Offhook..............................................................................................................167
5.3.2 No Tone After Offhook.........................................................................................................................170
5.3.3 Busy Tone After Offhook......................................................................................................................173
5.3.4 Continuous Dial Tone During Dialing..................................................................................................177
5.3.5 Called Party's Phone Does Not Ring.....................................................................................................179
5.3.6 One-Way Audio or No Audio During Communication........................................................................182
5.3.7 Noise in Communication.......................................................................................................................184
5.3.8 Discontinuous Communication.............................................................................................................188
5.3.9 Low Communication Voice...................................................................................................................189
5.4 Troubleshooting Fax and Modem Services....................................................................................................192
5.4.1 Fax Service Failures..............................................................................................................................193
5.4.2 Modem Service Failures........................................................................................................................196
6 System Fault Handling.............................................................................................................199
6.1 Abnormal ONU Status in GPON Upstream Transmission............................................................................200
6.1.1 GPON ONU Registration Failure..........................................................................................................200
6.1.2 Failure to Auto Discover a GPON ONU...............................................................................................216
6.1.3 GPON ONU Frequently Goes Online and Offline................................................................................224
6.2 NMS Fails to Manage a Device......................................................................................................................229
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6.3 The Alarm Information Fails to Be Displayed on the NMS...........................................................................231
6.4 Service Board Is in the Failed State................................................................................................................232
6.5 A Service Board Fails to Register..................................................................................................................234
6.6 Repeated Board Reset.....................................................................................................................................235
6.7 Unexpected Reset of the System....................................................................................................................237
7 Troubleshooting EMU Faults..................................................................................................239
7.1 ESCM Being in Fault State............................................................................................................................240
7.2 EPS30-4815AF Being in Fault State..............................................................................................................241
8 Common Operation...................................................................................................................244
8.1 Performing a Loopback on an E1 Line...........................................................................................................246
8.2 Performing a Loopback on an E1 Port...........................................................................................................247
8.3 POTS Subscriber Circuit Line Test................................................................................................................249
8.4 POTS Subscriber Loop Line Test...................................................................................................................250
8.5 POTS Subscriber Search Tone Test...............................................................................................................251
8.6 POTS Subscriber Signal Tone Test................................................................................................................253
8.7 POTS Port Loop Test.....................................................................................................................................254
8.8 Call Emulation Test........................................................................................................................................255
8.9 PPPoE Dialup Emulation Test........................................................................................................................256
8.10 Multicast Emulation Test..............................................................................................................................258
8.11 DHCP Dialup Emulation Test......................................................................................................................259
8.12 Capturing Voice Packets Remotely..............................................................................................................261
8.13 Capturing Packets by Using Port Mirroring.................................................................................................262
9 FAQ..............................................................................................................................................264
9.1 How Is the Broadband Service Board Powered Off Automatically When the Battery Supplies Power........265
A Appendix....................................................................................................................................266
A.1 Indicators ......................................................................................................................................................267
A.2 Making Cables and Connectors.....................................................................................................................268
A.2.1 Making Console-Ethernet Integrated Cables........................................................................................268
A.2.2 Making External Power Cables and Ground Cables with Cord End Terminals...................................269
A.2.3 Making External Power Cables and Ground Cables with OT Terminals.............................................271
A.2.4 Making Ordinary Network Cables........................................................................................................275
A.2.5 Making Shielded Network Cables........................................................................................................278
A.2.6 Making the E1 Cable............................................................................................................................281
A.3 Cable Labels..................................................................................................................................................295
A.3.1 Introduction to Labels...........................................................................................................................295
A.3.2 Filling Labels........................................................................................................................................297
A.3.3 Usage of Labels....................................................................................................................................299
A.3.4 Attaching Labels...................................................................................................................................301
A.3.5 Label for External Alarm Cables..........................................................................................................303
A.3.6 Label for Network Cables.....................................................................................................................304
A.3.7 Labels for Optical Fibers......................................................................................................................305
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A.3.8 Label for Subscriber Cables..................................................................................................................308
A.3.9 Labels for DC Power Cables................................................................................................................309
A.3.10 Labels for AC Power Cables..............................................................................................................310
A.4 Fault Tag........................................................................................................................................................311
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1 Overview
About This Chapter
Describes the purpose of routine maintenance, basic maintenance principles, and required
maintenance tools.
1.1 Maintenance Purpose
This topic describes the maintenance purpose.
1.2 Maintenance Principle
This topic describes the maintenance principle, including the following five parts: the
preparation for routine maintenance, the principle of routine maintenance, the principle of parts
replacement, the principle of troubleshooting, and the principle of maintaining an outdoor
cabinet.
1.3 Maintenance Tools
This topic describes the maintenance tools required on site.
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1.1 Maintenance Purpose
This topic describes the maintenance purpose.
The purpose of routine maintenance is to detect and rectify latent faults when the device is
running and to collect data for analyzing and optimizing the network. This ensures that the system
runs safely, stably, and reliably for a long time.
1.2 Maintenance Principle
This topic describes the maintenance principle, including the following five parts: the
preparation for routine maintenance, the principle of routine maintenance, the principle of parts
replacement, the principle of troubleshooting, and the principle of maintaining an outdoor
cabinet.
Preparation
Prepare for the operation as follows:
lMake sure that the device is grounded correctly according to the grounding requirements.
lWear the electrostatic discharge (ESD) wrist strap or ESD gloves to protect the device from
ESD damage.
lPlace spare boards or other spare parts in ESD bags.
lTake ESD measures to protect the port on the board. When performing operation on a port,
wear the ESD wrist strap or ESD gloves. Discharge the external cables and the protective
jackets of ports before connecting them to a device.
NOTE
It is recommended that you reserve certain installation materials for boards in the equipment room,
such as the vacuum formed box and the ESD bag.
Principle of Routine Maintenance
When performing routine maintenance, comply with the following principles:
lKeep the equipment room tidy, and prevent rodents or other insects from entering the
device.
lDo not install any software that is irrelevant to device maintenance to the maintenance
terminal.
lMaintain the device daily, weekly, monthly, quarterly, and annually according to the guide
to routine maintenance, and fill in the corresponding device maintenance form.
lIn the case of an emergent task that is encountered during routine maintenance, such as a
device fault, handle the task by following the troubleshooting procedure, and keep related
records. In the case of the fault that cannot be rectified, contact the local representative
office of Huawei for technical support.
lDo not insert, remove, or reset a board randomly.
lRemove a faulty board from the cabinet; otherwise, other faults may be caused.
lBack up data before data modification, and keep related records.
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Principle of Parts Replacement
When performing parts replacement, comply with the following principles:
lMake sure that operations are feasible.
–Check whether spare parts for the part to be replaced are available in the storehouse. If
not, contact the local Huawei representative office for immediate technical support.
–Make sure that parts replacement is performed by only qualified maintenance engineers,
who meet the following requirements:
–Know the functions of the MA5612 parts.
–Know the basic flow of parts replacement.
–Master the basic skills of parts replacement.
–Make sure that the replacement risks are controllable. Parts replacement is the
maintenance operation that has potential risks. Before replacing a part, estimate whether
the risks can be controlled by technical protective measures without powering off the
device. If yes, replace the part. If not, contact the local Huawei representative office for
immediate technical support.
lCheck the interchangeability of spare parts before replacing faulty parts or upgrading parts.
lUse ESD bags and ESD boxes to contain and transport spare parts.
lArrange, record, and return faulty parts in routine maintenance for obtaining available spare
parts in time, especially certain important parts, such as boards.
Principle of Troubleshooting
When performing troubleshooting, comply with the following principles:
lActively collect fault information. In case of a fault, learn related information about the
fault, and then make further troubleshooting plan.
lDuring troubleshooting, record each step and the related result. The details of the
troubleshooting process serve as a ground to apply for Huawei technical support and shorten
the troubleshooting time.
lIf a fault cannot be rectified, contact the Huawei Customer Service Center. At the same
time, when you report the problem to Huawei engineers, provide the following information:
–Full name of the site where the fault occurs
–Name and telephone number of the contact person
–Time when the fault occurs
–Fault description
–Software version of the MA5612
–Measures taken after the fault and the measure result
–Level of the fault and the expected solution time
Principle of Maintaining an Outdoor Cabinet
To make sure that a cabinet runs outdoors stably for a long time, comply with the following
principles during routine maintenance:
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1. When you open the cabinet door, prevent rain and snow from falling into the inner surface
of the device (including the front panel of the service board), from falling into cables, or
from falling into apertures.
2. Do not open the cabinet door in heavy dust. If the dust enters the cabinet, the service life
of the components is affected seriously.
3. It is recommended that you open the cabinet door to maintain the device when the
temperature is in the range from -5°C to +35°C. In this way, the device can be protected
from dew condensation or impact of extreme temperatures.
4. Exercise caution when opening the cabinet door in the case of strong wind. A strong wind
may cause the cabinet door to be opened or closed fiercely. This is dangerous to the
maintenance engineer and may damage the device. Use a door brake to fix the cabinet door
in a specified position.
1.3 Maintenance Tools
This topic describes the maintenance tools required on site.
Table 1-1 lists the maintenance tools required on site.
Table 1-1 Maintenance tools
Tool Description Appearance
Multimeter Tests the
connectivity of
cables and the
electrical
performance
indexes of the
device, including
voltage, current,
and resistance.
Optical power
meter
Tests the optical
power.
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Tool Description Appearance
Adjustable
optical attenuator
Adjusts the optical
power of optical
signals by adjusting
the optical
attenuation.
Flathead
screwdriver
Fastens small
screws and bolts.
The screwdriver
has a flat head.
Cross
screwdriver
Fastens small
screws and bolts.
The screwdriver
has a cross head.
Diagonal pliers Used as a substitute
of scissors to cut
insulating tubes or
cable ties.
Cable tie Bundles cables.
Network cable
crimping pliers
Clamp phone lines
and RJ-45
connectors.
Network cable
tester
Tests the
connectivity and
connections of
network cables.
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2 Field Maintenance Guide
About This Chapter
This topic describes the tasks of maintaining the hardware of the MA5612, and the reference
standard, operation guide, exception handling, and command reference of the tasks.
2.1 Checking the Grounding of the Device
To ensure that the device runs reliably and exclude the potential security risks, you need to check
the grounding of the device periodically. To be specific, you need to check whether the ground
cable is connected properly and whether the earth resistance meets the requirement.
2.2 Cleaning the Connector of the Optical Fiber
This topic describes how to clean the connector of the optical fiber. Frequent insert and remove
or no dustproof treatment for a longtime causes the connector to be dirty and aged, which
deteriorates the quality of the line. Therefore, you need to periodically clean the connector of
the optical fiber, including the ends of the optical fiber connector, optical port of the optical
transceiver, and adapter, and take measures to prevent dust.
2.3 Cleaning the Air Filter of the Cabinet
If the MA5612 is installed in a cabinet, it is recommended that you clean the air filters regularly
to ensure that the cabinet is ventilated properly. The air filters include the air filter at the bottom
of the cabinet and the air filter on the cabinet door. In the case of the outdoor cabinet, it is
recommended that you clean the air filters every three to six months. In the case of the indoor
cabinet, it is recommended that you clean the air filters every six months.
2.4 Checking Batteries
When the alternating current (AC) power supplied to a device is cut off, the system automatically
switches to battery power. To ensure that services continue to operate properly after the AC
power is cut off, check the working status of the batteries periodically.
2.5 Checking the surge protector
It is recommended that you protect the lightning proof system and the power system against the
thunder and storms before the raining season. This operation ensures the reliable running of the
device and prevents the potential security disasters that may exist in the system.
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2.1 Checking the Grounding of the Device
To ensure that the device runs reliably and exclude the potential security risks, you need to check
the grounding of the device periodically. To be specific, you need to check whether the ground
cable is connected properly and whether the earth resistance meets the requirement.
Tools and Instruments
lMultimeter
lEarth resistance tester
NOTE
The multimeter and the earth resistance tester are commonly used for checking the link. Therefore, they
are for your reference only.
Impact on the System
lProper connection of the ground cable ensures secure grounding of the device.
lIf the ground resistance exceeds the threshold, the surge protection functions of both the
device and the telecommunications room are affected, posing security risks for device
running. For example, the device shell may not be properly grounded or the protective unit
of the device may be burnt out.
Precautions
lBefore the thundery and rainy season comes, check the ground system of the device.
lPay attention to safety of personnel and equipment during device maintenance.
Procedure
Step 1 Check whether the ground cable is properly connected.
Connect one end of the multimeter to the ground cable and the other end to the ground bar or
ground body. Then, check whether the grounding is reliable through the check on the voltage
between the ground cable and the ground bar or ground body.
NOTE
If the grounding is reliable, the voltage between the ground cable and the ground bar or ground body is 0.
Step 2 Check whether the earth resistance meets the requirement.
Use the earth resistance tester to check whether the resistance between the ground bar or ground
body and the earth meets the requirement.
Step 3 If the connection of the ground cable is abnormal or the earth resistance does not meet the
requirement, troubleshoot the fault by referring to "Exception Handling."
----End
Reference Standard
lCheck whether the ground cable meets the following requirements:
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–Each connection point is secure and reliable without corrosion and oxidation.
–The ground cable does not deteriorate, and its sheath is not damaged.
–The ground bar is not corroded or oxidized, and anti-corrosion measures are taken
properly.
lCheck whether the earth resistance meets the following requirements:
–The lap resistance between the ground cable of the device and the ground bar or ground
body is smaller than 0.1 ohm.
–The ground resistance between the ground bar or ground body and the earth is smaller
than 10 ohms.
Exception Handling
1. If the ground cable deteriorates, or its sheath is damaged, replace it.
2. If the connection point of the ground cable is corroded or aged, replace the ground cable
or ground bar.
3. If the lap resistance between the ground cable of the device and the ground bar or ground
body is larger than 0.1 ohm, route the ground cable again.
4. If the ground resistance between the ground bar or ground body and the earth is larger than
10 ohms, take one of the following measures to decrease the ground resistance:
lBury the ground body or ground network deeper.
lUse a larger ground body.
lDecrease the resistivity of the earth.
5. If the fault persists, contact Huawei technical support engineers. For details, see 3.6
Contacting Huawei for Assistance.
2.2 Cleaning the Connector of the Optical Fiber
This topic describes how to clean the connector of the optical fiber. Frequent insert and remove
or no dustproof treatment for a longtime causes the connector to be dirty and aged, which
deteriorates the quality of the line. Therefore, you need to periodically clean the connector of
the optical fiber, including the ends of the optical fiber connector, optical port of the optical
transceiver, and adapter, and take measures to prevent dust.
Prerequisites
Prepare the cleaning tools before cleaning, and follow "Precautions".
Tools, Meters, and Materials
lDust-free cotton: a long silk cotton specially used for cleaning the ends of the optical fiber
connector.
lDust-free bar: used for cleaning the optical port of the optical transceiver and adapter
(flange). It has two specifications: ф2.5 mm and ф1.25 mm. You can select one according
to the port type (use the dust-free bar with ф2.5 mm for the ports of SC and FC types, and
use that with ф1.25 mm for the ports of LC and MTRJ types).
lDust-proof cap: used for ends of the optical connector, optical port of the optical transceiver,
and adapter.
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lCleaning tool box: used for placing the dust-free cotton and the dust-free cap. Place the
dust-free cotton and the dust-free cap separately from other tools.
lCleaning reagent (absolute ethyl alcohol) : used for cleaning the connector of the optical
fiber. It is inflammable, and must be securely saved and kept clean.
lOptical fiber section magnifier: a microscope (400*) used for checking whether the ends
of the optical fiber connector is clean and without damage.
Impact on the System
Power off the optical transceiver, and then clean the connector of the optical fiber. In this case,
servers carried on the optical port will be interrupted.
Precautions
DANGER
lDo not look directly into the optical fiber connector or the laser transmit port on the optical
port board without eye protection. Exposure of the combustible to the laser light must be
avoided.
lDo not clean any optical module before powering off the optical transceiver.
lTo clean the optical transceiver that can be removed and inserted, wear an ESD wrist strap
or wear ESD gloves.
lPut the dust-free cap into the cleaning tool box immediately after taking it off. Place the
dust-free cap not used in the cleaning tool box, or in the ESD bag for sealed save. Clean it
quarterly (it is recommended to clean it with the ultrasonic cleaner).
lKeep your hands clean and dry before tailoring the dust-free cotton, and place the dust-free
cotton not used in the clean ESD bag or the cleaning tool box for sealed save.
lAfter the cleaning, cover the optical fiber connector, optical transceiver, and adapter that
will not be immediately used with the dust-free caps.
Procedure
Step 1 Clean the ends of the optical fiber connector.
1. Clip a piece of dust-free cotton into 32 clips with the same size.
2. Use two clips of dry dust-free cotton (double-layer) to clean the ends of the optical fiber
connector along one direction for one time. For the dirty connector, use the clips of dust-
free cotton (two-layer) dipped with little cleanser to clean the ends of the optical fiber
connector along one direction for one time. Use another dry dust-free cotton clip to clean
the ends of the optical fiber connector along one direction once. Make sure that the ends
of the optical fiber connector is dry.
NOTE
Don not cyclically use the dust-free cotton. Use the dust-free cotton not touched by your hands.
3. After the cleaning, cover the optical fibers that will not be immediately used with the dust-
free caps.
Step 2 Clean the optical port of the optical transceiver.
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Maintenance Guide 2 Field Maintenance Guide
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Copyright © Huawei Technologies Co., Ltd.
9

1. If the optical transceiver can be removed and inserted, wear ESD gloves or an ESD wrist
strap to remove it.
2. Select dust-free cotton bars with different diameters according to the type of the optical
port, dip one bar with the cleaning reagent, insert the bar into the inner of the optical port,
and then clean it by rotating the bar 360 degrees along the inner wall of the optical port.
3. Use another dry dust-free cotton bar with the same diameter to insert it into the optical port,
and then clean it by rotating the bar 360 degrees along the inner wall of the optical port.
4. After the cleaning, cover the optical fibers that will not be immediately used with the dust-
free caps. Wear the ESD gloves or ESD wrist strap to insert the optical transceiver securely
at the place where it is removed.
Step 3 Clean the adapter (flange).
1. Select dust-free cotton bars with different diameters according to the type of the adapter,
insert one bar into the sleeve of the adapter, and then clean it by rotating the bar 360 degrees
along the inner wall of the sleeve.
2. Use another dry dust-free cotton bar with the same diameter to insert it into the sleeve of
the adapter, and then clean it by rotating the bar 360 degrees along the inner wall of the
sleeve.
NOTE
Use the ultrasonic cleaner to clean the adapters that need to be cleaned uniformly.
3. After the cleaning, cover the optical fibers that will not be immediately used with the dust-
free caps.
----End
2.3 Cleaning the Air Filter of the Cabinet
If the MA5612 is installed in a cabinet, it is recommended that you clean the air filters regularly
to ensure that the cabinet is ventilated properly. The air filters include the air filter at the bottom
of the cabinet and the air filter on the cabinet door. In the case of the outdoor cabinet, it is
recommended that you clean the air filters every three to six months. In the case of the indoor
cabinet, it is recommended that you clean the air filters every six months.
Tools and Materials
lVacuum cleaner
lCotton cloth
Reference Standard
The cabinet is ventilated properly.
Precaution
lIt is recommended that you clean the air filter regularly (In the case of the outdoor cabinet,
it is recommended that you clean the air filters every three to six months. In the case of the
indoor cabinet, it is recommended that you clean the air filters every six months.). You can
adjust the frequency based on the condition of the equipment room.
lExercise caution when cleaning the air filter and prevent sharp objects from damaging it.
SmartAX MA5612 Multi-service Access Module
Maintenance Guide 2 Field Maintenance Guide
Issue 01 (2012-07-25) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
10

lDo not exert extra force when removing the air filer. Otherwise, the air filter may be
distorted.
lDo not install wet air filter into a cabinet. Otherwise, the cabinet will absorb drops during
the air intake. In this case, the internal components may short-circuit and thus causing a
device fault.
lThe air filter must be stuck on the sticking bar firmly to avoid separation. If the sticking
bar is not sticky, replace it.
Procedure
lClean the air filter on the cabinet door.
1. Open the door of the cabinet, and remove the black air filter from the sticking bar that
is fixed on the inner side of the door.
2. Flap the thick dust off the air filter, and use the vacuum cleaner to remove the
remaining dust; or use water to wash the air filter, and then place the air filter in a
well-ventilated place to dry it.
3. Use a clean and dry cotton cloth to clean the inner side of a cabinet.
4. Install the clean and dry air filter on the sticking bar on the inner side of the cabinet
door.
lClean the air filter at the bottom of the cabinet.
1. Open the front door of a cabinet, press the two buckles of the air filter at the bottom
of the cabinet. Then, raise the air filter and pull it out.
2. Flap the thick dust off the air filter, and use the vacuum cleaner to remove the
remaining dust; or use water to wash the air filter, and then place the air filter in a
well-ventilated place to dry it.
3. Adjust the air filter position to align with the buckles on the front side, and then press
the buckles to fix the air filter.
4. If the air filter is abnormal, handle the problem according to "Exception Handling."
----End
Exception Handling
If the air filter is damaged or aged, or it is to be damaged, replace it with a new one.
2.4 Checking Batteries
When the alternating current (AC) power supplied to a device is cut off, the system automatically
switches to battery power. To ensure that services continue to operate properly after the AC
power is cut off, check the working status of the batteries periodically.
Context
Note the following when checking the batteries:
lCheck the working environment and working status of the batteries and ensure that the
following conditions are met:
–The shells of the batteries are clean and intact without leakage or distortion. The poles
and safety valves do not emit an acid mist.
SmartAX MA5612 Multi-service Access Module
Maintenance Guide 2 Field Maintenance Guide
Issue 01 (2012-07-25) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
11