bts common alarm reference (v300_01)

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Airbridge BTS CDMA Base Station

V300

Common Alarm Reference

Issue 01

Date 2010-05-10

Huawei Proprietary and Confidential

Copyright © Huawei Technologies Co., Ltd.



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Contents

About This Document.....................................................................................................................1

1 Alarm Information.....................................................................................................................1-1

1.1 Alarm Ser ial Number......................................................................................................................................1-2

1.2 Alarm ID.........................................................................................................................................................1-21.3 Alarm Ty pe.....................................................................................................................................................1-2

1.4 Alarm Severity................................................................................................................................................1-2

1.5 Event Type......................................................................................................................................................1-3

2 Common Alarm Reference.......................................................................................................2-1

2.1 ALM-17016 OML Between Board and Main Processing Module Disconnected..........................................2-3

2.2 ALM-17035 Signal Loss at Reception Port of Optical Module......................................................................2-7

2.3 ALM-17038 Optical Port Not In-Position....................................................................................................2-10

2.4 ALM-17048 Version Mismatched Between FPGA Software and CPU Software........................................2-13

2.5 ALM-17082 PA Closed Due to Overtemperature.........................................................................................2-152.6 ALM-17132 Transmission Module Configuration Incompatible.................................................................2-18

2.7 ALM-17133 Contents of Configuration File Incorrect.................................................................................2-22

2.8 ALM-17229 Lightning Arrester of Power Supply Faulty.............................................................................2-24

2.9 ALM-17581 10 M Crystal Oscillator No Output..........................................................................................2-27

2.10 ALM-17586 Number of Locked Satellites Insufficient..............................................................................2-29

2.11 ALM-17587 Satellite Antenna Open-Circuit..............................................................................................2-32

2.12 ALM-17588 Satellite Antenna Short-Circuited..........................................................................................2-35

2.13 ALM-17855 BER of E1/T1 Link Too High................................................................................................2-38

2.14 ALM-17883 Transmission Module IP Address Conflicting.......................................................................2-41

2.15 ALM-18131 DRC Alarm of Private-Line Users.........................................................................................2-42

2.16 ALM-18132 PID Delay Alarm...................................................................................................................2-44

2.17 ALM-18136 DSP Main Clock Abnormal...................................................................................................2-46

2.18 ALM-18138 No Light from Transmission Port of Optical Module............................................................2-47

2.19 ALM-18139 Signal Loss at Reception Port of Optical Module..................................................................2-49

2.20 ALM-18140 Transmission Power Too High at Optical Module................................................................2-52

2.21 ALM-18141 Transmission Power Too Low at Optical Module.................................................................2-54

2.22 ALM-18142 Reception Power Too High at Optical Module......................................................................2-55

2.23 ALM-18143 Reception Power Too Low at Optical Module......................................................................2-58

2.24 ALM-18150 CSM5000 Failure Alarm........................................................................................................2-61


Common Alarm Reference Contents

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2.25 ALM-18151 All CSM5000 Failure Alarm..................................................................................................2-64

2.26 ALM-18160 CSM6700 Failure Alarm........................................................................................................2-67

2.27 ALM-18345 DAC Clock of Transmitting Channel Abnormal...................................................................2-69

2.28 ALM-18350 Main and Diversity DDCs Unavailable Synchronously........................................................2-70

2.29 ALM-18356 TRM Blocked Because of the Command..............................................................................2-72

2.30 ALM-18363 Voltage of Power Amplification Power Supply Too High....................................................2-73

2.31 ALM-18364 Voltage of Power Amplification Power Supply Too Low.....................................................2-74

2.32 ALM-18365 TRM Pre-Distortion Capture Over-Time...............................................................................2-77

2.33 ALM-18367 Ratio Between Reference Voltage and Feedback Voltage of Predistortion Module Out of Range

.............................................................................................................................................................................2-78

2.34 ALM-18368 Predistortion Module Feedback Signal Too Small................................................................2-80

2.35 ALM-18376 Communication Link Between Power Amplification Monitoring Board and TRM Disconnected

.............................................................................................................................................................................2-81

2.36 ALM-18392 Power Amplification Gain Abnormal....................................................................................2-84

2.37 ALM-18394 Power Amplification Over-Temperature...............................................................................2-86

2.38 ALM-18395 Power Amplification Closed..................................................................................................2-89

2.39 ALM-18400 Standing Wave Alarm............................................................................................................2-91

2.40 ALM-18525 RF Feedback PLL Unlocked..................................................................................................2-94

2.41 ALM-18526 RF Reverse PLL Unlocked....................................................................................................2-95

2.42 ALM-18527 RF Forward PLL Unlocked....................................................................................................2-97

Contents



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Figures

Figure 2-1 Procedure for handling the ALM-17016............................................................................................2-5

Figure 2-2 Pr ocedure for handling the ALM-17035............................................................................................2-9

Figure 2-3 Pr ocedure for handling the ALM-17038..........................................................................................2-12




Figure 2-7 Pr ocedure for handling the ALM-17133 .........................................................................................2-23



Figure 2-10 Procedure for handling the ALM-17586........................................................................................2-31




Figure 2-14 Procedure for handling the ALM-18132........................................................................................2-45Figure 2-15 Procedure for handling the ALM-18138........................................................................................2-49


Figure 2-17 Procedure for handling the ALM-18142 .......................................................................................2-57

Figure 2-18 Procedure for handling the ALM-18143 .......................................................................................2-60












Common Alarm Reference Figures



iii



Tables

Table 1-1 Description of the alarm types.............................................................................................................1-2

Table 1-2 Description of the alarm severities.......................................................................................................1-2

Table 1-3 Description of the event types..............................................................................................................1-3


Common Alarm Reference Tables



v



About This Document

Purpose

This document describes the meaning, corrective procedures, and reference information of

CDMA BTS common alarms.

Product Version

The following table lists the product version related to this document.

Product Name Product Version

BTS V300

Intended Audience

This document is intended for:

l System engineers

l Network shifts

Change HistoryInitial release.

Organization

1 Alarm Information

This topic describes the contents and the definitions contained in the alarm information. The

alarm information includes the alarm serial number, alarm ID, alarm type, alarm severity, and

event type.

2 Common Alarm Reference


Common Alarm Reference About This Document



1



This topic describes the common alarm information and the handling procedures.

Conventions

Symbol Conventions

The symbols that may be found in this document 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, which if notavoided,could result in equipment damage, data loss,

performance degradation, or unexpected results.

Indicates a tip that may help you solve a problem or save

time.

Provides additional information to emphasize or supplement

important points of the main text.

General Conventions

The general conventions that may be found in this document are defined as follows.

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

Examples of information displayed on the screen are inCourier New.

Command Conventions

The command conventions that may be found in this document are defined as follows.


Boldface The keywords of a command line are in boldface.

Italic Command arguments are in italics.

About This Document



2 Huawei Proprietary and Confidential


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[ ] 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.

GUI Conventions

The GUI conventions that may be found in this document are defined as follows.


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.

Keyboard Operations

The keyboard operations that may be found in this document are defined as follows.

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 Operations

The mouse operations that may be found in this document are defined as follows.


Common Alarm Reference About This Document



3



Action Description

Click Select and release the primary mouse button without moving

the pointer.

Double-click Press the primary mouse button twice continuously andquickly without moving the pointer.

Drag Press and hold the primary mouse button and move the

pointer to a certain position.

About This Document



4 Huawei Proprietary and Confidential


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1 Alarm Information

About This Chapter

This topic describes the contents and the definitions contained in the alarm information. The

alarm information includes the alarm serial number, alarm ID, alarm type, alarm severity, and

event type.

1.1 Alarm Serial Number

This topic describes the alarm serial number.

1.2 Alarm ID

This topic describes the alarm ID.

1.3 Alarm Ty pe

This topic describes the alarm types: fault alarm and event alarm.

1.4 Alarm Severity

This topic describes the alarm severities: critical, major, minor, and warning.

1.5 Event Ty pe

This topic describes the event types: power system, environment system, signaling system, trunk

system, hardware system, software system, running system, communication system, QoS, and

processing error.


Common Alarm Reference 1 Alarm Information



1-1



1.1 Alarm Serial Number

This topic describes the alarm serial number.

Alarm serial number is an integer ranging from 1 to 999999999. It is used cyclically to identify

alarms. In a numbering cycle, an alarm serial number identifies only one alarm. The alarms of

the same type but with different report sources or report time have different alarm serial numbers.

1.2 Alarm ID

This topic describes the alarm ID.

Alarm ID is an integer ranging from 1 to 32000. An alarm ID identifies only one alarm. The

alarms of the same type but with different report sources or report time have the same alarm IDs

and handling procedures.

1.3 Alarm Type

This topic describes the alarm types: fault alarm and event alarm.

Table 1-1 describes the alarm types.

Table 1-1 Description of the alarm types

Type Description

Fault alarm The fault alarm indicates the status of the equipment. When an alarm isgenerated, the status is set to a value. When the alarm is cleared, the status is

set to another value. The severity of the fault alarm is normally higher than

that of the event alarm. All fault alarms must be cleared.

Event alarm The event alarm indicates that an accidental event occurs when the equipment

is running. It indicates an instant status. Event alarms need not to be cleared

and some event alarms are regularly resent.

1.4 Alarm SeverityThis topic describes the alarm severities: critical, major, minor, and warning.

Table 1-2 describes the alarm severities.

Table 1-2 Description of the alarm severities

Severity Description

Critical The alarm of this severity affects the system services, and you must take

immediate actions. If the equipment or resource cannot be used, you must

restore it immediately. Even if the fault occurs during non-working time, you

also need to take immediate actions.

1 Alarm Information



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Severity Description

Major Alarm of this severity affects the quality of service (QoS) and you must take

immediate actions. If the QoS of the equipment or resource decreases, you

must restore the equipment or resource to recover its capability. You must take

immediate actions during the working time.

Minor Alarm of this severity does not affect the QoS. To avoid the fault with higher

severity, however, you need to take actions in proper time or observe the fault.

Warning Alarm of this severity indicates that errors may exist to affect the service.

Based on different errors, you must take different actions to handle the errors.

1.5 Event Type

This topic describes the event types: power system, environment system, signaling system, trunk

system, hardware system, software system, running system, communication system, QoS, and

processing error.

Table 1-3 describes the event types.

Table 1-3 Description of the event types

Type Description

Power

system

Alarms about the power system

Environme

nt system

Alarms about the environment of equipment room, such as the temperature,

humidity, and door status

Signaling

system

Alarms about the channel associated signaling (SS1) and the common channel

signaling (SS7)

Trunk

system

Alarms about the trunk circuits and the trunk boards

Hardware

system

Alarms about the board equipment such as the clock and the CPU

Software

system

Alarms about the software

Running

system

Alarms generated when the system is running

Communic

ation

system

Alarms about the communication system such as the communication between

the host and the BAM

QoS Alarms about the QoS

Processing

error

Alarms about other exceptions


Common Alarm Reference 1 Alarm Information



1-3



1 Alarm Information





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About This Chapter

This topic describes the common alarm information and the handling procedures.

2.1 ALM-17016 OML Between Board and Main Processing Module Disconnected

2.2 ALM-17035 Signal Loss at Reception Port of Optical Module

2.3 ALM-17038 Optical Port Not In-Position

2.4 ALM-17048 Version Mismatched Between FPGA Software and CPU Software

2.5 ALM-17082 PA Closed Due to Overtemperature

2.6 ALM-17132 Transmission Module Configuration Incompatible

2.7 ALM-17133 Contents of Configuration File Incorrect

2.8 ALM-17229 Lightning Arrester of Power Supply Faulty

2.9 ALM-17581 10 M Crystal Oscillator No Output

2.10 ALM-17586 Number of Locked Satellites Insufficient

2.11 ALM-17587 Satellite Antenna Open-Circuit

2.12 ALM-17588 Satellite Antenna Short-Circuited

2.13 ALM-17855 BER of E1/T1 Link Too High

2.14 ALM-17883 Transmission Module IP Address Conflicting

2.15 ALM-18131 DRC Alarm of Private-Line Users

2.16 ALM-18132 PID Delay Alarm

2.17 ALM-18136 DSP Main Clock Abnormal

2.18 ALM-18138 No Light from Transmission Port of Optical Module

2.19 ALM-18139 Signal Loss at Reception Port of Optical Module

2.20 ALM-18140 Transmission Power Too High at Optical Module


Common Alarm Reference 2 Common Alarm Reference



2-1



2.21 ALM-18141 Transmission Power Too Low at Optical Module

2.22 ALM-18142 Reception Power Too High at Optical Module

2.23 ALM-18143 Reception Power Too Low at Optical Module

2.24 ALM-18150 CSM5000 Failure Alarm

2.25 ALM-18151 All CSM5000 Failure Alarm


2.27 ALM-18345 DAC Clock of Transmitting Channel Abnormal

2.28 ALM-18350 Main and Diversity DDCs Unavailable Synchronously

2.29 ALM-18356 TRM Blocked Because of the Command

2.30 ALM-18363 Voltage of Power Amplification Power Supply Too High

2.31 ALM-18364 Voltage of Power Amplification Power Supply Too Low

2.32 ALM-18365 TRM Pre-Distortion Capture Over-Time

2.33 ALM-18367 Ratio Between Reference Voltage and Feedback Voltage of Predistortion

Module Out of Range

2.34 ALM-18368 Predistortion Module Feedback Signal Too Small

2.35 ALM-18376 Communication Link Between Power Amplification Monitoring Board and

TRM Disconnected

2.36 ALM-18392 Power Amplification Gain Abnormal

2.37 ALM-18394 Power Amplification Over-Temperature

2.38 ALM-18395 Power Amplification Closed

2.39 ALM-18400 Standing Wave Alarm

2.40 ALM-18525 RF Feedback PLL Unlocked

2.41 ALM-18526 RF Reverse PLL Unlocked

2.42 ALM-18527 RF Forward PLL Unlocked






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2.1 ALM-17016 OML Between Board and Main Processing Module Disconnected

Description

The ALM-17016 is reported when the operation and maintenance links (OML) between other

boards and the main processing module are interrupted.

Through the OML, the main processing module performs loading, configuration, maintenance,

and state management on other configured boards of the BTS. When the main processing module

detects that the OML between a board and the main processing module is interrupted, it reports

the alarm.

Through the alarm, you can find in time the interruption of the OML between the board and the

main processing module.

The main processing module of the BBU3606 is the CMPT, and that of other types of BTS is

the BCKM.

Attribute

Alarm ID Alarm Severity Alarm Type

17016 Critical Fault

Parameters

Name Meaning

BTS name Name of the BTS where the alarm is generated

BTS ID ID of the BTS where the alarm is generated

Board type Type of the board where the alarm is generated

Board ID ID of the board where the alarm is generated

Subunit type Type of the subunit where the alarm is generated

Subunit ID ID of the subunit where the alarm is generated

Impact on the System

The impact of the ALM-17016 on the system is as follows:

l The board is unavailable after the alarm is reported.





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l The Service Maintenance System cannot operate and maintain the board.

l In the equipment panel of the Service Maintenance System, the board status is in gray

(offline).

System Actions

If the board where the alarm is generated is in position, the board is automatically reset and

restarted.

Possible Causes

The causes of the ALM-17016 are listed as follows:

l The BTS configuration data is incorrect.

l The actual slot number of the board is inconsistent with the configured board slot number.

l

The board is not installed or inserted tightly.l The board is not powered on.

l The board hardware or backplane is faulty.

The CCPM/CECM/HCPM/HECM provides transmission for the RF module. As a result, except

the previous causes, the following may also be the causes:

l The CCPM/CECM/HCPM/HECM is not started.

l The cable between the CCPM/CECM/HCPM/HECM and the RF module is faulty.

l The CCPM/CECM/HCPM/HECM is faulty.






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Figure 2-1 Procedure for handling the ALM-17016

Procedure

Step 1 Check whether the BTS configuration is correct.





2-5



l If the BTS configuration data is wrong, modify the configuration data. Check whether the

alarm is cleared. If the alarm is cleared, the procedure ends. If the alarm is not cleared, go to

2.

l If the configuration data is correct, go to 2.

Step 2 Check whether the planned slot is configured with a board.

If a board should be configured, configure the board. Check whether the alarm is cleared. If the

alarm is cleared, the procedure ends. If the alarm is not cleared, go to 3.

If the board is configured, go to 3.

Step 3 Check whether the CCPM/CECM/HCPM/HECM is available.

If the RF module is faulty, in the equipment panel of the Service Maintenance System, check

whether the CCPM/CECM/HCPM/HECM is available.

l If it is unavailable, go to 4.

l

If it is available, go to 5.

Step 4 Check whether the CCPM/CECM/HCPM/HECM is started.

View the board status from the equipment panel and check whether the CCPM/CECM/HCPM/

HECM is started.

l If the CCPM/CECM/HCPM/HECM is not started, start it. Check whether the alarm is

cleared. If the alarm is cleared, the procedure ends. If the alarm is not cleared, go to 5.

l If the board is started, go to 5.

Step 5 Bring the spare parts to the site and replace the faulty parts.

Bring the spare parts to the site and replace the faulty parts. Check whether the alarm is cleared.

If the alarm is cleared, the procedure ends. If the alarm is not cleared, go to 6. The spare partsare as follows:

l STDM/CCPM/CECM/HCPM/HECM/main processing module

l Cable

l Optical module

Step 6 Check whether the board is in position and whether the slot position is correct.

l If the board is not in position, insert the board to ensure that it is in the position. Check

whether the alarm is cleared. If the alarm is cleared, the procedure ends. If the alarm is not

cleared, go to 7.

l If the board is in position and the slot position is correct, go to 7.

Step 7 Check whether the cable is faulty.

If the STDM is faulty, remove and then insert the cable to check whether the cable is faulty.

l If the cable is faulty, replace the cable. Check whether the alarm is cleared. If the alarm is

cleared, the procedure ends. If the alarm is not cleared, go to 8.

l If the cable is operational, perform 8.

Step 8 Replace the faulty board.

To replace the board that reports the alarm, ref er to the BTS Site Maintenance Guide.

----End






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Related Information

None.

2.2 ALM-17035 Signal Loss at Reception Port of OpticalModule

Description

When the optical receiving port of the optical module does not receive signals, the ALM-17035

is reported.

When the reception optical port of the optical module receives signals, the RF module/ODU

connected with the optical port function and the BTS is operational.

Through the alarm, you can find in time the fault at the receiving optical port of the opticalmodule.

Attribute


17035 Major Fault

ParametersName Meaning



Board type Type of the board where the alarm is generated: CCPM, CECM, HCPM, HECM,

STDM, and ODU

Board ID ID of the board where the alarm is generatedl CCPM (0-5)

l CECM (0-5)

l HCPM (0-5)

l HECM (0-5)

l STDM (0)

l CMTR (0-5)

l ODU (0-17)






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Name Meaning



The services carried by the sector carriers of the RF module that is connected to the optical port

are interrupted.

System Actions

None.

Possible Causes

The causes of ALM-17035 are listed as follows:

l The contact between the receiving port and the fiber is poor or the fiber is damaged.

l The STDM/CMTR/OMTR connected with the optical fiber is not powered on or the optical

module of the STDM/CMTR/OMTR is faulty.

l The ODU connected with the optical fiber is not powered on or the optical module of the

ODU is faulty.






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Procedure

Step 1 Keep the spare parts ready.

The spare parts are as follows:

l STDM

l Optical module

Step 2 Check whether the fiber is connected to the receiving optical port.

l If the fiber is not connected to the receiving port, connect the fiber and go to 3.

l If the fiber is connected, go to 3.

Step 3 Remove and insert the fiber on the receiving optical port of the optical module.

Check whether the alarm is cleared. If the alarm is cleared, the procedure ends. If the alarm is

not cleared, go to 4.

Step 4 Replace the optical fibers.

To replace the optical fiber, refer to the BTS Site Maintenance Guide. Check whether the alarm

is cleared. If the alarm is cleared, the procedure ends. If the alarm is not cleared, go to 5.

Step 5 Check whether the ODU is powered on.

l If it is powered off, switch on the power switch. Check whether the alarm is cleared. If the


l If it is powered on, go to 6.

Step 6 Replace the ODU.

Step 7 Check whether the STDM/CMTR/OMTR is powered on.

l If it is powered off, switch on the power switch. Check whether the alarm is cleared. If the


l If it is powered on, go to 8.

Step 8 Replace the STDM/CMTR/OMTR.

To replace the STDM/CMTR/OMTR that reports the ALM-17035, refer to the BTS Site

Maintenance Guide.

----End

Related Information None.

2.3 ALM-17038 Optical Port Not In-Position

Description

When the small form-factor pluggable (SFP) interface of the specified port is not in position,

the ALM-17038 is reported.

The SFP interface is photoelectricity compatible. In the board, it is an electrical interface socket.The SFP interface transmits high-speed signals through different modules. The SFP interface






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transmits the signals between the CECM/CCPM/HCPM/HECM and the STDM/CMTR. Only

when the SFP interface is normal, the services carried by the RF module are normal, and the

BTS is operational. When the SFP interface is not in position, the ALM-17038 is reported.

Through the alarm, you can find in time the fault in the SFP interface.

Attribute


17038 Major Fault

Parameters

Name Meaning




STDM, and CMTR

Board ID ID of the board where the alarm is generated:

l CCPM (0-5)

l CECM (0-5)

l HCPM (0-5)

l HECM (0-5)

l STDM (0)

l CMTR (0-5)




The services configured in the SFP interface where the alarm is generated cannot be set up.

System Actions

None.

Possible Causes

The causes of the ALM-17038 are as follows:





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l The SFP port is not installed.

l The SFP port is not connected properly.

l The SFP port is faulty.

Workflow


Procedure

Step 1 Check the type of the SFP port and keep the spare parts ready.


l Optical module






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l Electrical module

Step 2 Check whether the SFP port is installed.

l If the SFP port is not installed, install it. Ensure that the installation is correct, and then go

to 3.l If it is installed, go to 3.

Step 3 Check whether the SFP port is installed correctly and observe the Tx indicator of the port.

l If the indicator is ON, check whether the alarm is cleared. If the alarm is not cleared, go to

4.

l If the indicator is OFF, go to 4.

Step 4 Remove and then insert the SFP port and observe the Tx indicator of the port.

l If the indicator is ON, check whether the alarm is cleared. If the alarm is not cleared, go to

5.

l If the indicator is OFF, go to 5.

Step 5 Replace the SFP port.

----End

Related Information

None.

2.4 ALM-17048 Version Mismatched Between FPGASoftware and CPU Software

Description

The ALM-17048 is reported when the version of the field programmable gate array (FPGA)

software of a board is not compatible with the version of the CPU software.

Only when the version of the board FPGA software matches the version of the CPU software,

the board can work normally. When the board is started, the CPU software automatically checks

the version of the FPGA software. When the CPU software detects that the FPGA softwareversion does not match the version of the CPU software, the ALM-17048 is reported.

Through the alarm, you can find in time the fault in the versions of the board FPGA software

and the CPU sof tware.

Attribute







2-13



Parameters

Name Meaning




BCIM, CMPT, and STDM


l CCPM (0-5)

l CECM (0-5)

l HCPM (0-5)l HECM (0-5)

l BCIM (0-1)

l CMPT (0-1)

l STDM (0)




The board where the alarm is generated is unavailable. The board cannot carry the services.

System Actions

None.

Possible Causes

In the board where the alarm is generated, the version of the FPGA software does not match theversion of the CPU software.






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Workflow


Procedure

Step 1 Check and replace the board software of the BAM.

Check and replace the board software of the BAM based on the FPGA software and CPU

software versions described in the Version Configuration Information.

Step 2 Upgrade the FPGA software and the CPU software of the checked board.

Run the DLD CBTSSW command to upgrade the FPGA software and the CPU software of the

checked board.

----End

Related Information

The related commands are as follows:

DLD CBTSSW

2.5 ALM-17082 PA Closed Due to Overtemperature

Description

If the function of disabling the power amplification due to the BTS overtemperature is enabled,

the power amplification in the RF subrack is disabled when the baseband subrack temperature

exceeds the threshold of the temperature. At this time, the ALM-17082 is reported.

The BCKM/CMPT software monitors the board temperature in the baseband subrack in real

time. When the highest temperature of the board exceeds the threshold, the software disables

the power amplification of the RF subrack and reports the alarm to reduce the cabinet temperatureand protect the baseband modules.





2-15



Through the alarm, you can know that the normal operation of the equipment is affected by the

overtemperature of the baseband subrack.

Attribute


17082 Major Fault

Parameters

Name Meaning



Board type Type of the board where the alarm is generated: BCKM and CMPT

Board ID ID of the board where the alarm is generated: 0




The services carried by the BTS are interrupted

System Actions

When the temperature of the baseband subrack is lower than the temperature threshold, the

BCKM software automatically enables the power amplification and reports that the alarm is

cleared.

Possible CausesThe causes of the ALM-17082 are as follows:

l The temperature threshold is set too low.

l The BTS fan is faulty.

l The ambient temperature is too high.






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Workflow


Procedure

Step 1 Check whether the temperature threshold is reasonable.

Run the DSP CBTSCFG command to check whether the temperature threshold is reasonable.

l If the temperature threshold is unreasonable, reset it. Check whether the alarm is cleared. If

the alarm is cleared, the procedure ends. If the alarm is not cleared, go to 2.

l If the temperature threshold is reasonable, go to 2.

Step 2 Check whether an alarm related to the BTS fan is generated.

Check whether the overtemperature alarm is generated in the fan module of the baseband

subrack.

l

If the alarm is generated, clear the alarm. Check whether the alarm is cleared. If the alarm iscleared, the procedure ends. If the alarm is not cleared, go to 3.





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l If the alarm does not exist, go to 4.

Step 3 After the alarm related to the BTS fan is cleared, wait for 30 minutes and then observe the result.

After the alarm related to the BTS fan is cleared for 30 minutes, check whether the ALM-17082

alarm is cleared. If the alarm is cleared, the procedure ends. If the alarm is not cleared, go to 4.

Step 4 Take measures to ensure that the temperature of the equipment room is normal.

----End

Related Information


DSP CBTSCFG

2.6 ALM-17132 Transmission Module ConfigurationIncompatible

Description

The alarm is reported when the transmission module (BCIM/CMPT) type is inconsistent with

the BTS configuration information.

After the main processing module receives the reset report from the transmission module, it

obtains the type of the transmission module and compares the type with the configuration

information. When the main processing module detects that the type of the transmission moduleis inconsistent with the BTS configuration information, it reports the alarm.

Through the alarm, you can find the fault of the hardware configuration of the transmission

module in time.

Attribute


17132 Major Fault/clear

Parameters

Name Meaning



Board type Type of the board where the alarm is generated: BCIM and CMPT






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Name Meaning

Board ID ID of the board where the alarm is generated, with the value ranging from 0 to

1




The ALM-17132 has the following impacts on the system:

l The transmission module cannot work.

l

The OML is interrupted.l The services are interrupted.

System Actions

None.

Possible Causes


l The type of the transmission module is incompatible with the link group type.

l The BTS is configured to use the FE cable for transmission, but the BCIM type is

QC52BCIM.

l The board IP address is configured, but the BCIM type is QC52BCIM.

l The board route is configured, but the BCIM type is QC52BCIM.

l The BCIM type is incompatible with the time slot cross configuration information. The

QC54BCIM supports only the time slot cross of number 0 and number 1 links.





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Workflow







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Procedure

Step 1 Check whether the type of the transmission module is compatible with the link group type.

Check whether the BCIM type is compatible with the link group type.

l The QC52BCIM supports the UNI/IMA/FRAC IMAFRAC links.

l The QC54BCIM supports the PPP and the MLPPP links.

Check whether the BCIM type is compatible with the link group type.

l If they are not compatible, change the configuration information or refer to the BTS Site

Maintenance Guide to replace the board. Check whether the alarm is cleared. If the alarm is


l If they are compatible, go to 2.

Step 2 Check whether the BTS is configured to use the FE cable for transmission.

Check whether the BTS is configured as the FE mode if the board type is QC52BCIM.

l If the BTS is configured as the FE mode, refer to the BTS Site Maintenance Guide to replacethe board with the QC54BCIM or remove the FE configuration. Observe whether the alarm

is cleared. If the alarm is cleared, the procedure ends. If the alarm is not cleared, go to 3.

l If the BTS is not configured to use the FE cable for transmission, go to 3.

If the board type is not QC52BCIM, go to 5.

Step 3 Check whether the board IP address is configured.

Check whether the board IP address is configured if the board type is QC52BCIM.

l If the IP address is configured, refer to the BTS Site Maintenance Guide to replace the board

or refer to the BTS Data Configuration Guide to reconfigure the BCIM. Observe whether

the alarm is cleared. If the alarm is cleared, the procedure ends. If the alarm is not cleared,

go to 4.

l If the board is not configured with the IP address, go to 4.


Step 4 Check whether the board route is configured.

If the board type is QC52BCIM, check whether the board route is configured.

l If it is, refer to the BTS Site Maintenance Guide to replace the board with the QC54BCIM

or remove the routing configuration. Observe whether the alarm is cleared. If the alarm is


l If the route is not configured, go to 5.


Step 5 Change the configuration information or replace the board.

The relation between the type of the transmission module and the time slot cross configuration

is as follows:

l The QC52BCIM supports the timeslot cross configuration.

l The QC54BCIM only supports the external timeslot cross of the number 0 and number 1

links. When the number 1 link type is PPP or MLPPP, you cannot configure the time slot

cross to it.

Change the configuration information or refer to the BTS Site Maintenance Guide to replace the

board.

----End





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Related Information

None.

2.7 ALM-17133 Contents of Configuration File Incorrect

Description

When the BTS configuration file is wrong, the ALM-17133 is reported.

When the BTS is reset, it reads and activates the configuration file in the BAM. Through a

command, the BTS can read, write, or activate the configuration file. If the BTS fails to read,

write, or activate the configuration file, the alarm is reported.

Through the alarm, you can find in time the fault in the contents of the BTS configuration file.

Attribute


17133 Major Fault/recovery

Parameters

Name Meaning





1




The alarm causes failure to configure the boards and the service data of the BTS. As a result,

the BTS cannot operate properly.

System Actions

The BTS attempts to download and activate the configuration file in the BAM.






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Possible Causes


l The FLASH has no configuration file to be activated.

l The BTS fails to read the configuration file.

l The BTS fails to write the configuration file.

l The configuration file is wrong.

Workflow


Procedure

Step 1 Reload and activate the configuration file.

Run the DLD CBTSSW command in the Service Maintenance System to reload and activate

the BTS configuration file.

l If the configuration file is activated, check whether the alarm is cleared. If the alarm is cleared,

the procedure ends. If the alarm is not cleared, go to 2.

l If the configuration file is not activated, go to 2.

Step 2 Check the versions.





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Check whether the version of the BCKM/CMPT software is consistent with the version of the

configuration file that fails to be activated.

l If the versions are consistent, go to 3.

l If the versions are inconsistent, replace the configuration file in the BAM and perform 1.

Step 3 Check the configuration command.

l If the configuration command is wrong, modify or replace the configuration file.

l If the configuration command is correct, the procedure ends.

----End

Related Information

The related command is as follows:

DLD CBTSSW

2.8 ALM-17229 Lightning Arrester of Power Supply Faulty

Description

The ALM-17229 is reported when the lightning arrester of the power supply is faulty or the

connection between the lightning arrester and the BTS is exceptional.

The lightning arrester of the power supply protects the BTS against lightning strikes.

Through the alarm, you can find in time the fault in the lightning arrester and the connection.

Attribute


17229 Major Fault

Parameters

Name Meaning





1







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Name Meaning




l The power supply system, boards, and other equipment are damaged during the lightning

strike.

l The services are interrupted during the lightning strike.

System Actions

None.

Possible Causes


l The connection between the lightning arrester and the BTS is exceptional or the connecting

cable is faulty.

l The communication cable that connects to the STDM is interrupted.

l The lightning arrester is faulty.





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Workflow


Procedure

Step 1 Keep the spare parts ready.Bring the spare parts to the site. The spare parts are as follows:

l lightning arrester

l Cable

Step 2 Connect the test cable to check whether the cable is faulty.

l If the cable is faulty, go to 3.

l If the alarm is cleared, the procedure ends.

Step 3 Remove and then insert the connecting cable.

Check whether the alarm is cleared. If the alarm is cleared, the procedure ends. If the alarm isnot cleared, go to 4.






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Step 4 Replace the connecting cable.

To replace the connecting cable, refer to the BTS3 Site Maintenance Guide. Check whether the

alarm is cleared. If the alarm is cleared, the procedure ends. If the alarm is not cleared, go to 5.

Step 5 Replace the lightning arrester.

----End

Related Information

None.

2.9 ALM-17581 10 M Crystal Oscillator No Output

Description

The ALM-17581 is reported when the clock module of the BCKM/CMPT cannot detect the

output clock signal of the 10 MHz voltage controlled oscillator.

Through the alarm, you can find in time the fault in the output clock signal of the 10 MHz voltage

controlled oscillator.

Attribute



Parameters

Name Meaning



Board type Type of the board where the alarm is generated: CLK module of the main

processing module


1

Subunit type Type of the subunit where the alarm is generated: default subunit type

Subunit ID ID of the subunit where the alarm is generated: default subunit ID





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When the ID of the board that reports the alarm is 0 (active BCKM/CMPT), the impact of the

ALM-17587 on the system is as follows:

l If the BTS is started, the BCKM/CMPT cannot provide the system clock for the BTS after reporting the alarm. The BTS cannot operate.

l If the BTS is not started, the BTS cannot operate after the BCKM/CMPT reports the alarm.

When the ID of the board that reports the alarm is 1 (standby BCKM/CMPT), the BTS services

are not affected. The BCKM/CMPT hot backup function, however, is not available.

System Actions

If the active BCKM/CMPT reports the alarm and the standby BCKM/CMPT is configured, the

system automatically triggers the active/standby switchover when the clock of the standby

BCKM/CMPT is in the locked state or within the hold capability.

Possible Causes

The 10 MHz crystal oscillator of the BCKM/CMPT is faulty.

Workflow


Procedure


Bring the BCKM/CMPT to the site.






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Step 2 Remove and then insert the BCKM/CMPT.



Step 3 Replace the BCKM/CMPT.

To replace the BCKM/CMPT that reports the ALM-17581, refer to the BTS Site Maintenance

Guide.

----End

Related Information

None.

2.10 ALM-17586 Number of Locked Satellites Insufficient

Description

The ALM-17586 is reported when the satellites locked by the main processing module (BCKM/

CMPT) satellite receiver are insufficient.

The following situations cause the insufficient satellites locked by the BCKM/CMPT satellite

receiver:

l When the satellites traced by the BCKM/CMPT satellite receiver are insufficient, the

BCKM/CMPT fails to obtain the satellite position because of the bad geometric position

such as small satellite elevation even if the traced satellites are sufficient. As a result, the

BTS system clock performance is affected and the alarm is generated.

l When the system clock does not have the hold capability, the alarm is reported if the

satellites traced by the BCKM/CMPT satellite receiver are insufficient or the position

cannot be obtained.

l When the system clock has the hold capability, the alarm is reported if the satellites traced

by the BCKM/CMPT satellite receiver are insufficient or the position cannot be obtained

in the hold time.

Through the alarm, you can find the fault of the insufficient satellites locked by the BCKM/

CMPT satellite receiver.

NOTE

The situations of insufficient satellites traced are as follows:

l The traced satellites are fewer than four in the case of the GLONASS not-in-position hold.

l The traced satellites are fewer than five in the case of the GPS/GLONASS not-in-position hold.

l The traced satellites are fewer than one or two in the case of the satellite receiver in-position hold.

Attribute


17586 Minor Fault





2-29



Parameters

Name Meaning




processing module


1






l If the BTS is started, the clock performance cannot be ensured after the BCKM/CMPT

reports the alarm. The QoS of the BTS is affected.

l If the BTS is not started and the BTS clock reference source is configured with only the board clock, the BTS cannot operate after the BCKM/CMPT reports the alarm

l If the BTS is not started and the BTS clock reference source is configured with an internal

clock, the BTS can operate after the clock is switched to the internal clock. The clock

performance, however, cannot be ensured and the QoS of the BTS is affected.


are not affected. The BCKM/CMPT hot backup function, however, is not available.

System Actions

If the active BCKM/CMPT reports the alarm and the standby BCKM/CMPT is configured, the

system automatically triggers the active/standby switchover when the clock of the standby

BCKM/CMPT is in the locked state or within the hold capability.

Possible Causes

The causes of the ALM-17586 are as follows.

l When the GPS/GLONASS is installed, the working mode of the BCKM/CMPT satellite

receiver is configured with GLONASS only.

l The BCKM/CMPT satellite receiver is exceptional.

l The interference and the obstructions exist around the satellite antenna.

l The BCKM/CMPT satellite receiver is ineffective.






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Workflow


Procedure


Bring the BCKM/CMPT to the site.

Step 2 Check the working mode of the BCKM/CMPT satellite receiver.

Run the DSP CBTSCFG command to query the working mode of the BTS satellite receiver.

Check whether the working mode of the BCKM/CMPT satellite receiver is GLONASS only.





2-31



l If the working mode is GLONASS only, run the SET CBTSCLKSRCMODE command to

change the working mode to GPS+GLONASS. Check whether the alarm is cleared. If the


l If the working mode is not GLONASS only, go to 3.

Step 3 Reset the satellite receiver and wait for about 30 minutes.



Step 4 Replace the BCKM/CMPT.

To replace the BCKM/CMPT that reports the ALM-17586, refer to the BTS Site Maintenance

Guide. Check whether the alarm is cleared.


l If the alarm is not cleared, go to 5.

Step 5 Reinstall the antenna.

Reinstall the antenna according to the installation guide.

----End

Related Information


DSP CBTSCFG

SET CBTSCLKSRCMODE

2.11 ALM-17587 Satellite Antenna Open-Circuit

Description

l The ALM-17587 is reported when the cable between the BCKM/CMPT satellite receiver

and the satellite antenna is disconnected.

l The ALM-17587 is also reported when the BCKM/CMPT detects that the feed current in

the cable that connects the satellite receiver and the satellite antenna is small and the satellite

receiver cannot trace the satellite.

Through the alarm, you can find in time the fault in the open circuit of the cable connection

between the satellite receiver and the satellite antenna.

Attribute


17587 Minor Fault






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Parameters

Name Meaning




processing module


1






l If the BTS is started, the system is not affected in the hold time because the system clock

has the hold capability. If the hold time expires, the QoS of the BTS is affected.

l

If the BTS is not started and the BTS clock reference source is configured with only the board clock, the BTS cannot operate after the BCKM/CMPT reports the alarm





are not affected. The standby BCKM/CMPT clock can provide the BCKM/CMPT hot backup

function in the hold time when the active BCKM/CMPT is faulty. The BCKM/CMPT hot backup

function, however, is not available when the hold time expires.

System Actions

If the active BCKM/CMPT whose clock cannot be held reports the alarm and the standby

BCKM/CMPT is configured, the system automatically triggers the active/standby switchover

when the clock of the standby BCKM/CMPT is in the locked state or within the hold capability.

If the active BCKM/CMPT whose clock can be held reports the alarm, the system clock is held

after the alarm is reported. After the active BCKM/CMPT clock hold time expires and the

standby BCKM/CMPT is configured, the system automatically triggers the active/standby

switchover when the clock of the standby BCKM/CMPT is in the locked state or within the hold

capability.

Possible Causes

The causes of the ALM-17587 are as follows.





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l The GPS antenna is not installed correctly.

l The GPS feeder is damaged or connected insecurely, or the cable between the GPS receiver

and the BCKM/CMPT front panel is damaged.

l The lightning arrester is ineffective.

Workflow


Procedure








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l GPS feeder

l White cables in the board

l Lightning arrester

Step 2 Check whether the installation environment of the GPS antenna is proper.

The items for the installation environment of the GPS antenna are as follows:

l The installation location is open without high buildings around.

l It is far from the small adjunct buildings of the rooftop.

l The usable installation area is large.

l The antenna upward vertical angle is greater than 90°.

l It is far from the electromagnetic signal sources that are similar to the operating band of the

GPS (1.575 GHz).

Check whether the installation environment of the GPS antenna is proper.

l If the GPS antenna is not installed correctly, handle the problems that exist in the installation.

Check whether the alarm is cleared. If the alarm is cleared, the procedure ends. If the alarm

is not cleared, go to 3.

l If the GPS antenna is installed correctly, go to 3.

Step 3 Check whether the GPS feeder is intact and correctly connected.

l If the GPS feeder is damaged or connected insecurely, refer to the BTS Site Maintenance

Guide to replace the feeder and ensure that the connection is reliable. Check whether the


4.

l If the GPS feeder is securely connected, go to 4.

Step 4 Check whether the lightning arrester is ineffective.

l If the lightning arrester is ineffective, refer to the BTS Site Maintenance Guide to replace

the lightning arrester.

l If the lightning arrester is normal, the procedure ends.

----End

Related Information

None.

2.12 ALM-17588 Satellite Antenna Short-Circuited

Description

The ALM-17588 is reported when the main processing module detects that the feed current in

the cable that connects the satellite receiver and the satellite antenna is large.

Through the alarm, you can find in time the fault in the short circuit of the cable connection

between the satellite receiver and the satellite antenna.





2-35



Attribute


17588 Minor Fault

Parameters

Name Meaning



Board type Type of the board where the alarm is generated: CLK module of the main processing module


1






l If the BTS is started, the system is not affected in the hold time because the system clock

has the hold capability. If the hold time expires, the QoS of the BTS is affected.

l If the BTS is not started and the BTS clock reference source is configured with only the

board clock, the BTS cannot operate after the BCKM/CMPT reports the alarm





are not affected

The standby BCKM/CMPT clock can provide the BCKM/CMPT hot backup function in the

hold time. The BCKM/CMPT hot backup function, however, is not available when the hold time

expires.

System Actions

If the active BCKM/CMPT whose clock cannot be held reports the alarm and the standby

BCKM/CMPT is configured, the system automatically triggers the active/standby switchover when the clock of the standby BCKM/CMPT is in locked state or within the hold capability.






Issue 01 (2010-05-10)



If the active BCKM/CMPT whose clock can be held reports the alarm, the system clock is held

after the alarm is reported. After the active BCKM/CMPT clock hold time expires and the

standby BCKM/CMPT is configured, the system automatically triggers the active/standby

switchover when the clock of the standby BCKM/CMPT is in locked state or within the hold

capability.

Possible Causes

The GPS antenna is inundated or the GPS feeder is damaged.

Workflow


Procedure


Bring the GPS feeder to the site.





2-37



Step 2 Connect the BCKM/CMPT by using the standby antenna and cable.

l If the alarm is cleared, you can infer that the original GPS feeder is short-circuited. Go to

4.


Step 3 Disconnect the feeder and the GPS antenna and the feeder and the GPS receiver.

After the connections are interrupted, use a multimeter to measure the impedance between the

shielded layer and the core wire of the feeder.

l If the impedance is more than several megaohms, you can infer that the GPS feeder is not

short-circuited.

l If the impedance is less than several megaohms, you can infer that the original GPS feeder

is short-circuited. Go to 4.

Step 4 Replace the feeder and protect the GPS antenna system against the water.

----End

Related Information

None.

2.13 ALM-17855 BER of E1/T1 Link Too High

Description

When the bit error rate (BER) of the E1/T1 link exceeds the threshold, the ALM-17855 is

reported.

The transmission module measures the BER of the E1/T1 link every 10 minutes. If the BER is

higher than the threshold, the transmission module reports the alarm.

Through the alarm, you can find the fault in the BER of the E1/T1 link in time.

Attribute


17855 Major Fault

Parameters

Name Meaning



Board type Type of the board where the alarm is generated: BCIM and CMPT






Issue 01 (2010-05-10)



Name Meaning


1


Subunit ID ID of the E1/T1 link where the alarm is generated, with the value ranging from

0 to 7



l The quality of the voice services carried by the link is decreased or the calls are dropped.

l The transmission rate of the data service carried by the link decreases or the transmission

is interrupted.

System Actions

None.

Possible Causes


l

Poor contact of the E1/T1 link l Bad grounding performance of the E1/T1 cable

l Damaged shielded layer of the E1/T1 cable

l Faulty transmission network

l Inconsistent configuration of the impedance

l High BER of the optical transmission link

l High BER of the E1/T1 link





2-39



Workflow


Procedure

Step 1 Check whether the optical transmission link is normal.

l If the optical transmission link is exceptional, improve the transmission quality of the optical

transmission link. Check whether the alarm is cleared. If the alarm is cleared, the procedure

ends. If the alarm is not cleared, go to 2.

l If the optical transmission link is normal, go to 2.

Step 2 Check whether the E1/T1 cable and its shielded layer are normal.

Check whether the grounding of the E1/T1 cable is normal and whether the shielded layer of

the cable is damaged.

l If the connection is exceptional, clear the fault caused by the poor contact or the damage on

the cable. Check whether the alarm is cleared. If the alarm is cleared, the procedure ends. If the alarm is not cleared, go to 3.






Issue 01 (2010-05-10)



l If the connection is normal, go to 3.

Step 3 Contact the transmission engineers to check whether the equipment or transmission cable is

normal.

----End

Related Information

None.

2.14 ALM-17883 Transmission Module IP AddressConflicting

Description

The ALM-17883 is reported when the IP address of the FE port of the QC54BCIM conflicts

with the IP address of other equipment in the same network segment.

Through the alarm, you can find in time the fault in the IP address of the FE port of the BCIM.

Attribute


17883 Major Fault

Parameters

Name Meaning



Board type Type of the board where the alarm is generated: BCIM


3


Subunit ID ID of the FE port where the alarm is generated, with the value ranging from 0

to 1





2-41




The data transmission through the FE port is interrupted. As a result, the services carried over

the FE port are interrupted.

System Actions

None.

Possible Causes

The IP address of the FE port of the BCIM conflicts with the IP address of other equipment in

the network.

Procedure

Step 1 Run the DSP CBTSFEPORTINFO command. Check whether the configured IP address of theFE port is consistent with the planned IP address.

If they are not consistent, run the RMV CBTSFEPORT command to delete the old address of

the FE port, and then run the ADD CBTSFEPORT command to add a new IP address to the FE

port.

Step 2 If they are consistent, the corrective procedure ends.

----End

Related Information


DSP CBTSFEPORTINFO

RMV CBTSFEPORT

ADD CBTSFEPORT

2.15 ALM-18131 DRC Alarm of Private-Line Users

Description

The ALM-18131 is reported when the CECM/HECM detects that the data rate of download

service does not meet the requirement of the subscription rate owing to the poor quality of the

air interface.

The CECM/HECM periodically checks the data rate control (DRC) of private-line users. When

the CECM/HECM detects that the download rate indicated by the DRC value is less than eight

times as big as the subscription rate, the CECM/HECM considers that the air interface

interference is large and reports the alarm. When the CECM/HECM detects that the download

rate indicated by the DRC value reaches eight times as big as the subscription rate, the alarm is

cleared.

Through the alarm, you can find the fault in time in the DRC download speed of private-lineusers.






Issue 01 (2010-05-10)



Attribute


18131 Major Fault

Parameters

Name Meaning



Board type Type of the board where the alarm is generated: CECM and HECM


5



Impact on the SystemThe quality of the forward air interface is poor and the subscription speed of private-line users

cannot be ensured.

System Actions

None.

Possible Causes

The quality of the radio channel environment decreases.

Procedure

Step 1 Check the radio channel environment of the area in which the dedicated subscriber is located.

Clear the factors that may cause interference.

Step 2 Degrade the dedicated subscriber to a common subscriber so that the MS can receive the radio

signals in good quality from the BTS.

----End

Related Information

None.





2-43



2.16 ALM-18132 PID Delay Alarm

DescriptionWhen the delay of BCMCS service data packet exists in the Abis interface, the ALM-18132 is

reported.

When the CECM/HECM is started, it identifies the delay alarm threshold through the process

identity (PID) of the miscellaneous parameter that is used to configure the broadcast information

flow. When the PID delay exceeds the threshold, the CECM/HECM reports the alarm. After

five minutes, the alarm is cleared if the PID delay is smaller than the threshold.

Through the alarm, you can find in time the fault in the delay of the BCMCS service data.

Attribute


18132 Major Fault

Parameters

Name Meaning





5




The quality of the BCMCS services decreases or the BCMCS services are interrupted.

System Actions

None.

Possible Causes







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l The BSC or the BTS clock is faulty.

l The delay of the Abis link is long.

Workflow


Procedure

Step 1 Check whether the clock alarms exist in the CLK module of the main processing module.l If the clock alarms exist, clear the alarms. Check whether the ALM-18132 is cleared. If the

alarm is cleared, the procedure ends. If the ALM-18132 is not cleared, go to 2.

l If the clock alarms do not exist, go to 2.

Step 2 Check whether the clock alarms exist in the BSC.

l If the clock alarms exist, clear the alarms. Check whether the ALM-18132 is cleared. If the

alarm is cleared, the procedure ends. If the ALM-18132 is not cleared, go to 3.

l If the clock alarms do not exist, go to 3.

Step 3 Check whether the transmission alarms exist.

l If the transmission alarms exist, clear the alarms.





2-45



l If the transmission alarms do not exist, the procedure ends.

----End

Related Information

None.

2.17 ALM-18136 DSP Main Clock Abnormal

Description

When the digital signal processor (DSP) main clock of the CECM/HECM is exceptional, the

ALM-18136 is reported.

The CECM/HECM periodically checks the register of the FPGA clock signal alarm to determine

whether the 80 MHz clock is faulty. If the 80 MHz clock is faulty, the DSP main clock signal

is exceptional and the alarm is reported.

The alarm is associated with the 25 MHz clock alarm, 60 MHz clock alarm, and 125 MHz clock

alarm. When the ALM-18136 is reported, you can infer that other clocks are also faulty. Only

the 80 MHz clock alarm and the DSP main clock alarm, however, are reported.

Through the alarm, you can check in time whether the DSP main clock is exceptional.

Attribute



Parameters

Name Meaning





5








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The services carried by the CECM are interrupted.

System Actions None.

Possible Causes


l The crystal oscillator of the signal board is faulty.

l The DSP chip is faulty.

Procedure

Step 1 Check the FPGA clock signal alarm register. Determine whether the 80 MHz clock is faulty.

If it is faulty, refer to the BTS Site Maintenance Guide to replace the CECM/HECM that reports

the ALM-18136.

Step 2 If the equipment of the peer end is normal, the procedure ends.

----End

Related Information

None.

2.18 ALM-18138 No Light from Transmission Port of OpticalModule

Description

The ALM-18138 is reported when the CCPM/CECM/HCPM/HECM detects that the Tx port of

the optical module has no transmit optical power and the optical module of the CCPM/CECM

is in position.

For the configured optical port, the CCPM/CECM/HCPM/HECM periodically checks the status

register of the optical port. By checking the status register of the optical port, the CCPM/CECM/

HCPM/HECM determines whether the fault of no transmitted optical power exists.

Through the alarm, you can check in time whether the optical module is normal.

Attribute


18138 Major Fault





2-47



Parameters

Name Meaning



Board type Type of the board where the alarm is generated: CCPM, CECM, HCPM, and

HECM


l CCPM (0-5)

l CECM (0-5)

l HCPM (0-5)

l HECM (0-5)


Subunit ID Optical port of the board where the alarm is generated, with the value ranging

from 0 to 2



l The peer end equipment of the optical port is unavailable.

l The services are interrupted.

System Actions

None.

Possible Causes

The optical module of the CCPM/CECM/HCPM/HECM is faulty.






Issue 01 (2010-05-10)



Workflow


Procedure

Step 1 Remove and then insert the optical module.

l Check whether the alarm is cleared. If the alar m is cleared, the procedure ends.


Step 2 Replace the optical module.

To replace the faulty optical module that reports the ALM-18138, refer to the BTS Site

Maintenance Guide.

----End

Related Information

None.

2.19 ALM-18139 Signal Loss at Reception Port of OpticalModule

Description

The ALM-18139 is reported when the optical module detects that the optical signals received

at the receiving port are lost and the optical module of the CCPM/CECM/HCPM/HECM is in

position.





2-49



When the CCPM/CECM/HCPM/HECM is powered on, it periodically checks the status of the

optical module and the fiber. If the CCPM/CECM/HCPM/HECM detects that the received

signals of the optical module are lost, it reports the alarm.

Through the alarm, you can find in time the fault in the fiber or the optical module of the local

end or the peer end.

Attribute


18139 Major Fault

Parameters

Name Meaning




HECM


l CCPM (0-5)

l CECM (0-5)

l HCPM (0-5)

l HECM (0-5)




The ALM-18139 has the following impacts on the system:

l The optical channel of the optical module cannot carry services. As a result, the

communication between the local end equipment and the peer end equipment is interrupted.

l After the fault occurs, all the service requests carried by the fiber fail.

System Actions

None.






Issue 01 (2010-05-10)



Possible Causes

The causes of ALM-18139 are as follows:

l The fiber of the local end or the peer end is not connected tightly to the optical module.

l The fiber type of the local end or the peer end is incompatible with the optical module.

l The optical module of the local end of the CCPM/CECM/HCPM/HECM is faulty and

cannot identify the optical signals.

l The optical port or the optical module of the peer end equipment is faulty and cannot

transmit optical signals.


Procedure

Step 1 Check whether the fiber of the local end is connected tightly to the optical module.

l If they are not connected tightly, insert the fiber into the port of the optical module. Check


cleared, go to 2.

l If they are connected tightly, go to 2.





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Step 2 Check whether the optical module and the fiber type of the local end are compatible.

l If they are incompatible, refer to the BTS Site Maintenance Guide to replace the local optical

module that reports the ALM-18139. Check whether the alarm is cleared. If the alarm is



Step 3 Check whether the fiber of the peer end is connected tightly to the optical module.

l If they are not connected tightly, insert the fiber into the port of the optical module. Check


cleared, go to 4.

l If they are connected tightly, go to 4.

Step 4 Check whether the optical module and fiber type of the peer end are compatible.

l If they are incompatible, refer to the BTS Site Maintenance Guide to replace the peer optical

module that reports the ALM-18139.

l If they are compatible, the procedure ends.

----End

Related Information


DSP CBTSBRDVER

DSP CBTSBRDSPECSTAT

2.20 ALM-18140 Transmission Power Too High at OpticalModule

Description

The ALM-18140 is reported when the optical module detects that the transmission power at the

receiving port is too high and the optical module of the CCPM/CECM/HCPM/HECM is in

position.

The fault detection of the optical module shows that the transmission power is too high. No

matter whether the fiber is connected, the optical module reports the alarm as soon as the module

detects the fault.

Through the alarm, you can find in time the fault in the transmission power of the optical module.

Attribute


18140 Major Fault






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Parameters

Name Meaning




HECM


l CCPM (0-5)

l CECM (0-5)

l HCPM (0-5)

l HECM (0-5)



from 0 to 2



l The services carried by the fiber that is connected to the optical module are interrupted.

l After the fault occurs, all the service requests carried by the fiber fail.

System Actions

None.

Possible CausesThe optical module of the local end is faulty.

Procedure

Step 1 Check the optical module.

If it is faulty, refer to the BTS Site Maintenance Guide to replace the local optical module that

reports the ALM-18140.

Step 2 If it is normal, the procedure ends.

----End





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Related Information


DSP CBTSBRDVER

DSP CBTSBRDSPECSTAT

2.21 ALM-18141 Transmission Power Too Low at OpticalModule

Description

The ALM-1814 is reported when the optical module detects that the transmission power at the

receiving port is too low and the optical module of the CCPM/CECM/HCPM/HECM is in

position.

The fault detection of the optical module shows that the transmission power is too low. No matter

whether the fiber is connected, the optical module reports the alarm as soon as the module detects

the fault.

Through the alarm, you can find in time the fault in the transmission power of the optical module.

Attribute


18141 Minor Fault

Parameters

Name Meaning




HECM


l CCPM (0-5)

l CECM (0-5)

l HCPM (0-5)

l HECM (0-5)







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Name Meaning


from 0 to 2


The strength of the optical signals received by the optical module of the peer end is too low. As

a result, the services carried by the fiber that is connected to the optical module are interrupted.

After the fault occurs, all the service request carried by the fiber fail.

System Actions

None.

Possible Causes

The optical module of the local end is faulty.

Procedure

Step 1 Check the optical module.

If it is faulty, refer to the BTS Site Maintenance Guide to replace the local optical module that



----End

Related Information

None.

2.22 ALM-18142 Reception Power Too High at OpticalModule

Description

The ALM-18142 is reported when the CCPM/CECM/HCPM/HECM detects that the power of

the signal received from the receiving port of the optical module is too high.

Through the alarm, you can check in time whether the optical fiber is damaged or the optical

module is faulty.

Attribute


18142 Minor Fault





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Parameters

Name Meaning




HECM


l CCPM (0-5)

l CECM (0-5)

l HCPM (0-5)

l HECM (0-5)



from 0 to 2



l The components of the optical module are faulty.


System Actions

None.

Possible Causes


l The optical module and the optical module type are incompatible.

l The optical module and the optical fiber type are incompatible.

l The optical module of the local end is faulty.

l The optical port of the peer end equipment is faulty.






Issue 01 (2010-05-10)



Workflow


Procedure

Step 1 Check whether the optical module and the optical module type are compatible.

l If they are incompatible, refer to the BTS Site Maintenance Guide to replace the optical

module that reports the ALM-18142. Check whether the alarm is cleared. If the alarm is



Step 2 Check whether the optical module and the optical fiber type are compatible.

l If they are incompatible, refer to the BTS Site Maintenance Guide to replace the optical fiber.

Check whether the alarm is cleared. If the alarm is cleared, the procedure ends. If the alarm

is not cleared, go to 3.






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Step 3 Check whether the optical module of the local end is faulty.

l If it is faulty, refer to the BTS Site Maintenance Guide to replace the local optical module

that reports the ALM-18142. Check whether the alarm is cleared. If the alarm is cleared, the

procedure ends. If the alarm is not cleared, go to 4.

l If it is normal, go to 4.

Step 4 Check whether the optical port of the peer end equipment is faulty.

l If the equipment of the peer end is faulty, clear the fault of it.

l If the equipment of the peer end is normal, the procedure ends.

----End

Related Information

None.

2.23 ALM-18143 Reception Power Too Low at OpticalModule

Description

The ALM-18143 is reported when the CCPM/CECM/HCPM/HECM detects that the power of

the signal received from the receiving port of the optical module is too low.

The CCPM/CECM/HCPM/HECM can retrieve the information about the rate of the configuredoptical port. The information is saved in I2C. The CCPM/CECM/HCPM/HECM determines

whether to report the alarm based on the flag bit of the low receiving power received from the

optical port. In normal cases, the flag bit is 0. When the power of the optical port is too low, the

flag bit is 1 and the CCPM/CECM reports the alarm.

Through the alarm, you can check in time whether the optical fiber is damaged or the optical

module is faulty.

Attribute


18143 Minor Fault

Parameters

Name Meaning








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Name Meaning


HECM


l CCPM (0-5)

l CECM (0-5)

l HCPM (0-5)

l HECM (0-5)



from 0 to 2



l The equipment at the peer end cannot work.


System Actions

None.

Possible Causes


l The receiving optical fiber and the transmitting optical fiber of the local end or the peer

end are connected incorrectly or insecurely.

l The optical module and the optical fiber type are incompatible or the optical fiber is

disconnected.

l The optical module of the local end is faulty.

l The optical module of the CCPM/CECM/HCPM/HECM is faulty.

l The optical port of the peer end equipment is faulty.





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Workflow







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Procedure

Step 1 Check whether the receiving and transmitting optical fibers of the local end are connected

correctly.

l

If the optical fibers are connected incorrectly, reconnect them. Check whether the alarm iscleared. If the alarm is cleared, the procedure ends. If the alarm is not cleared, go to 2.

l If the optical fibers are connected correctly, go to 2.

Step 2 Check whether the optical fibers are connected tightly.

l If the optical fibers are not connected tightly, reconnect them. Check whether the alarm is

cleared. If the alarm is cleared, the procedure ends. If the alarm is not cleared, go to 3.

l If the optical fibers are connected properly, go to 3.

Step 3 Check whether the optical module and the optical fiber type are compatible.

l If they are incompatible, refer to the BTS Site Maintenance Guide to replace the optical fiber.

Check whether the alarm is cleared. If the alarm is cleared, the procedure ends. If the alarmis not cleared, go to 4.


Step 4 Check whether the optical module of the local end is faulty.

l If it is faulty, refer to the BTS Site Maintenance Guide to replace the local optical module

that reports the ALM-18143. Check whether the alarm is cleared. If the alarm is cleared, the



Step 5 Check whether the CCPM/CECM/HCPM/HECM is faulty.

l

If it is faulty, refer to the BTS Site Maintenance Guide to replace the CCPM/CECM/HCPM/HECM that reports the ALM-18143. If the alarm is not cleared, go to 6.


Step 6 Check whether the equipment of the peer end is faulty.

l If the equipment of the peer end is faulty, clear the fault of it.

l If the equipment of the peer end is normal, the procedure ends.

----End

Related Information

None.


Description

When the CSM5000 chip on the CCPM is faulty, the ALM-18150 is reported.

When the CCPM is started, all the CSM5000 chips on the CCPM perform self-check. If the

check fails, the ALM-18150 is reported.

Through the ALM-18150, the faulty CSM5000 chip on the CCPM can be located in time.





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Attribute


18150 Major Fault

Parameters

Name Meaning



Board type Type of the board where the alarm is generated: CCPM


2





l The faulty chip cannot be used for the radio resource allocation.

l The CE resources assigned on the forward and reverse channels of the CCPM is reduced.

l The maximum number of the accessed users decreases.

l The system reports that the CCPM must be replaced.

System Actions

None.

Possible Causes


l The input clock of the chip on the backplane is exceptional.

l The CSM5000 chip is faulty.






Issue 01 (2010-05-10)



Workflow


Procedure

Step 1 Check whether the input clock of the backplane is exceptional.

l If the input clock of the backplane is exceptional, refer to the BTS Maintenance Guide to

replace the BCKM that reports the ALM-18150. Check whether the alarm is cleared. If the


l If the input clock of the backplane is normal, go to 2.

Step 2 Check whether the CCPM is exceptional.

l If the CCPM is exceptional, refer to the BTS Maintenance Guide to replace the CCPM that


l If the CCPM is normal, the procedure ends.

----End

Related Information


DSP CBTSBRDVER

DSP CBTSLOG

DSP CBTSBRDSTAT





2-63



2.25 ALM-18151 All CSM5000 Failure Alarm

Description

When all the CSM5000 chips on the CCPM are faulty, the ALM-18151 is reported.

After the CCPM is operational, all the CSM500 chips on the CCPM perform self-check. If the



Attribute



Parameters

Name Meaning



Board type Type of the board where the alarm is generated:

CCPM


l CCPM (0-2)

l CECM (0-2)

Subunit type Type of the subunit where the alarm is

generated


ID of start circuit ID of E1 logic start circuit of blocked trunk

circuits, with the value ranging from 0 to 65535

Number of blocked circuits Value range: 0 to 65535

Whether to block all circuits of the signaling

point

The meanings of values 0 and 1 are as follows:

l 0: No

l 1: Yes






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Name Meaning

Whether to block multiple circuits The meanings of values 0 and 1 are as follows:

l 0: No

l 1: Yes

Whether to block all circuits within the

permissible range

The meanings of values 0 and 1 are as follows:

l 0: No

l 1: Yes

Circuit bit Indicated by hex, with the value ranging from

0 to 0xFFFFFFFF

For example, when the circuits 1 to 3 are

blocked, the circuit bit is 0x70000000.

Fault cause 07 H (OAM&P intervention), 20 H (equipment

fault) or 21 H (no available radio resources)


All the chips on the CCPM are unavailable. Therefore, the CCPM cannot bear any service.

System Actions

The CCPM/CECM is started after eight minutes and checks the chips again.

Possible Causes


l The input clock of the chip on the backplane is faulty.

l All the CSM5000 chips are faulty.





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Workflow


Procedure

Step 1 Check whether the input clock on the backplane is normal.

l If the input clock of the backplane is exceptional, refer to the BTS Maintenance Guide to

replace the BCKM that reports the ALM-18151. Check whether the ALM-18151 is cleared.

If the alarm is cleared, the procedure ends. If the ALM-18151 is not cleared, go to 2.



l If the CCPM is exceptional, refer to the BTS Maintenance Guide to replace the CCPM that



----End

Related Information


DSP CBTSBRDVER

DSP CBTSLOG

DSP CBTSBRDSTAT






Issue 01 (2010-05-10)




Description

When the CSM6700 chip on the CCPM is faulty, the ALM-18150 is reported.

When the CCPM is started, all the CSM6700 chips on the CCPM perform self-check. If the



Attribute


18150 Major Fault

Parameters

Name Meaning



Board type Type of the board where the alarm is generated: CCPM


5





l The faulty chip cannot be used for the radio resource allocation.

l The CE resources assigned on the forward and reverse channels of the CCPM is reduced.

l The maximum number of the accessed users decreases.

l The system reports that the CCPM must be replaced.

System Actions

None.





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Possible Causes


l The input clock of the chip on the backplane is exceptional.

l The CSM6700 chip is faulty.

Workflow


Procedure

Step 1 Check whether the input clock on the backplane is normal.

l If the input clock of the backplane is exceptional, refer to the BTS Site Maintenance Guide

to replace the BCKM that reports the ALM-18160. Check whether the alarm is cleared. If




l If the CCPM is exceptional, refer to the BTS Site Maintenance Guide to replace the CCPM

that reports the ALM-18160.


----End

Related Information







Issue 01 (2010-05-10)



DSP CBTSBRDVER

DSP CBTSLOG

DSP CBTSBRDSTAT

2.27 ALM-18345 DAC Clock of Transmitting ChannelAbnormal

Description

When the digital analog converter (DAC) of the STDM/CMTR/OMTR detects the unlocked

phase-locked loop (PPL), the ALM-18345 is reported.

Through the alarm, you can find in time the fault in the DAC of the transmission channel.

Attribute



Parameters

Name Meaning



Board type Type of the board where the alarm is generated: STDM, CMTR, and OMTR



Subunit ID Forward channel of the STDM where the alarm is generated, with the value

ranging from 0 to 2


The services supported by the sectors where the DAC is located are interrupted.

System Actions

None.





2-69



Possible Causes

The STDM/CMTR/OMTR is faulty.

ProcedureStep 1 Check the STDM/CMTR/OMTR.

If it is faulty, refer to the BTS Site Maintenance Guide to replace the STDM/CMTR/OMTR that



----End

Related Information

None.

2.28 ALM-18350 Main and Diversity DDCs UnavailableSynchronously

Description

When the digital down change (DDC) of the receiving main and diversity fails at the same time,


Through the alarm, you can find in time the fault in the DDC of the receiving main and diversity.

Attribute



Parameters

Name Meaning





5







Issue 01 (2010-05-10)



Name Meaning



The services of the sector carrier where the STDM/CMTR/OMTR is located are interrupted.

System Actions

None.

Possible Causes

The cause of the ALM-18350 is that the DDCs of the main and diversity of the STDM/CMTR/OMTR are faulty.

Workflow


Procedure

Step 1 Reset the STDM/CMTR/OMTR.

l Check whether the alarm is cleared. If the alarm is cleared, the procedure ends.






2-71



Step 2 Power off the RF module.



Maintenance Guide.

----End

Related Information

None.

2.29 ALM-18356 TRM Blocked Because of the Command

Description

When the sector carriers of the BTS are caused by the user command, the ALM-18356 is

reported.

Through the alarm, you can find in time the fault in the carrier blocking caused by the user

command.

Attribute


18356 Warning Fault/recovery

Parameters

Name Meaning





5




If the sector carriers of the BTS are blocked, the services carried by this sector carriers areinterrupted.






Issue 01 (2010-05-10)



System Actions

None.

Possible CausesThe sector carries of the BTS are blocked by the user command.

Procedure

Step 1 Open the LMT Service Maintenance System.

Step 2 Run the UBL CBTSSECTORCARRIER command to unblock the corresponding sector carriers.

----End

Related InformationThe related commands are as follows:

UBL CBTSSECTORCARRIER

2.30 ALM-18363 Voltage of Power Amplification PowerSupply Too High

Description

The software checks the voltage of the SPAM/CMPA/OMPA power supply in real time. When

the voltage of the SPAM power supply exceeds 34 V, the ALM-18363 is reported. When the

voltage of the SPAM power supply is lower than 30 V, the alarm is cleared. When the voltage

of the CMPA/OMPA power supply exceeds 30 V, the ALM-18363 is reported. When the voltage

of the CMPA/OMPA power supply is lower than 28.5 V, the alarm is cleared.

Through the alarm, you can find in time the fault in the voltage of the SPAM/CMPA/OMPA

power supply.

Attribute


18363 Major Fault

Parameters

Name Meaning







2-73



Name Meaning

Board type Type of the board where the alarm is generated: SPAM, CMPA, and OMPA

Board ID ID of the board where the alarm is generated, with the value ranging from 0 to5




The SPAM/CMPA/OMPA is powered off, no power is output, and the services carried by the

sector are interrupted.

System Actions

After the alarm related to the overvoltage of the SPAM/CMPA/OMPA power supply is

generated, the system powers off the SPAM/CMPA/OMPA automatically.

Possible Causes


l The power supply module is faulty.

l The SPAM/CMPA/OMPA is faulty.

Procedure

Step 1 Check the output voltage of the power supply module.

If it is faulty, refer to the BTS Site Maintenance Guide to replace the SPAM/CMPA/OMPA that



----End

Related Information

None.

2.31 ALM-18364 Voltage of Power Amplification PowerSupply Too Low

Description

The software checks the voltage of the SPAM/CMPA/OMPA power supply. When the voltageof the SPAM power supply is less than 20.8 V, the ALM-18364 is reported. When the voltage






Issue 01 (2010-05-10)



of the SPAM power supply exceeds 25 V, the alarm is cleared. When the voltage of the CMPA/

OMPA power supply is lower than 21 V, the ALM-18364 is reported. When the voltage of the

CMPA/OMPA power supply exceeds 25 V, the alarm is cleared.

Through the alarm, you can find in time the fault in the voltage of the SPAM/CMPA/OMPA

power supply.

Attribute


18364 Major Fault

Parameters

Name Meaning



Board type Type of the board where the alarm is generated: SPAM, CMPA, and OMPA


5




The SPAM/CMPA/OMPA is powered off, no power is output, and the services carried by the

sector are interrupted.

System ActionsAfter the ALM-18364 is generated, the system powers off the SPAM/CMPA/OMPA

automatically.

Possible Causes


l The voltage of the battery supplying power is too low.

l The power supply module is overloaded.

l The power supply module is faulty.






2-75



Workflow


Procedure

Step 1 Check whether the undervoltage is caused by power failure.

l If the undervoltage is caused by power failure, confirm the ALM-18364 after the power is

supplied. Check whether the alarm is cleared. If the alarm is cleared, the procedure ends. If

the alarm is not cleared, go to 2.

l If the undervoltage is not caused by power failure, go to 2.

Step 2 Check whether the power supply modules are insufficient.

l If the power supply modules are insufficient, add the power supply modules. Check whether

the alarm is cleared. If the alarm is cleared, the procedure ends. If the alarm is not cleared,

go to 3.

l If the power supply modules are sufficient, go to 3.






Issue 01 (2010-05-10)



Step 3 Replace the power supply module.

To replace the power supply module that reports the ALM-18364, refer to the BTS Site

Maintenance Guide.



Step 4 Replace the SPAM/CMPA/OMPA.

To replace the SPAM/CMPA/OMPA that reports the ALM-18364, refer to the BTS Site

Maintenance Guide.

----End

Related Information

None.

2.32 ALM-18365 TRM Pre-Distortion Capture Over-Time

Description

When the pre-distortion module is faulty and the data sampling expires, the ALM-18365 is

reported.

Through this alarm, you can find in time the fault in the acquisition time of the pre-distortion

module.

Attribute


18365 Major Fault

Parameters

Name Meaning





5






2-77



Name Meaning



The specifications for the transmission signal are affected and the call quality may be decreased.

System Actions

None.

Possible Causes


Procedure

Step 1 Check the STDM/CMTR/OMTR.




----End

Related Information

None.

2.33 ALM-18367 Ratio Between Reference Voltage andFeedback Voltage of Predistortion Module Out of Range

Description

The pre-distortion module checks the ratio of the reference power to the feedback power in real

time. When the ratio exceeds the permissible range, the ALM-18367 is reported.

Through this alarm, you can timely find the fault in the ratio of reference voltage to the feedback

voltage of the STDM/CMTR/OMTR pre-distortion module.

Attribute


18367 Major Fault






Issue 01 (2010-05-10)



Parameters

Name Meaning





5





System Actions

None.

Possible Causes

The STDM is faulty.

Procedure





----End

Related Information

None.





2-79



2.34 ALM-18368 Predistortion Module Feedback Signal TooSmall

Description

The pre-distortion module checks the strength of the feedback signal in real time. When the

strength of the feedback signal is less than the threshold of the power required for the operation

of the pre-distortion module, the ALM-18368 is reported.

Through this alarm, you can find in time the fault in the feedback signal of the STDM/CMTR/

OMTR pre-distortion module.

Attribute


18368 Major Fault

Parameters

Name Meaning





5





System Actions

None.

Possible Causes

The STDM is faulty.






Issue 01 (2010-05-10)



Procedure





----End

Related Information

None.

2.35 ALM-18376 Communication Link Between Power

Amplification Monitoring Board and TRM Disconnected

Description

The SPAM communicates with the STDM through the serial port. When the communication

between the SPAM monitoring board and the STDM fails, the ALM-18376 is reported. The

CMPA/OMPA communicates with the CMTR/OMTR through the serial port. When the

communication between them fails, the ALM-18376 is reported.

Through this alarm, you can check whether the communication between the STDM/CMTR/

OMTR and the SPAM/CMPA/OMPA monitoring board is normal.

Attribute


18376 Major Fault

Parameters

Name Meaning





5






2-81



Name Meaning

Subunit ID ID of the subunit where the alarm is generated, with the value of 0xff


The information about the SPAM/CMPA/OMPA cannot be reported. Therefore, the output

power of the SPAM/CMPA/OMPA cannot be monitored.

System Actions

None.

Possible Causes


l The connection between the STDM and the serial port of the SPAM monitoring board is

exceptional.

l The connection between the CMTR and the serial port of the CMPA monitoring board is

exceptional.

l The connection between the OMTR and the serial port of the OMPA monitoring board is

exceptional.

l The SPAM/CMPA/OMPA monitoring board is faulty.

l The STDM/CMTR/OMTR is faulty.






Issue 01 (2010-05-10)



Workflow


Procedure


Step 2 Reconnect the serial cable between the RF module and the PA module.

Power on the RF module after the connection is normal. Check whether the alarm is cleared. If




To replace the SPAM/CMPA/OMPA that reports the ALM-18376, refer to the BTS Site

Maintenance Guide. After the connection is normal, power on the RF module. Check whether

the alarm is cleared. If the alarm is cleared, the procedure ends. If the alarm is not cleared, go

to 5.






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Maintenance Guide.

----End

Related Information

None.

2.36 ALM-18392 Power Amplification Gain Abnormal

Description

The SPAM/CMPA/OMPA can control the gain. When the gain of the SPAM/CMPA/OMPA

exceeds the permissible range, the ALM-18392 is reported.

Through the alarm, you can find in time the fault in the gain of the SPAM/CMPA/OMPA.

Attribute


18392 Major Fault

Parameters

Name Meaning





5


Subunit ID For the STDM, it is the ID of the subunit where the alarm is generated, with the

value ranging from 0 to 2


The transmit power of the sector carrier of the SPAM/CMPA/OMPA is exceptional and the BTScoverage is affected.






Issue 01 (2010-05-10)



System Actions

None.


l The RF connection between the STDM and the SPAM is faulty.

l The RF connection between the CMTR and the CMPA is faulty.

l The RF connection between the OMTR and the OMPA is faulty.


l The STDM/CMTR/OMTR detection circuit is faulty.

Workflow






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Procedure

Step 1 Power off the RF module.Step 2 Reconnect the RF cable between the RF module and the PA module.

Power on the RF module and wait for 20 minutes.

l Check whether the alarm is cleared. If the alarm is cleared, the procedure ends.




Refer to the BTS Site Maintenance Guide to replace the SPAM/CMPA/OMPA that reports the

ALM-18392. Ensure that the connection between the RF module and the PA module is proper.

Then power on the RF module and wait for 20 minutes. Check whether the alarm is cleared. If the alarm is cleared, the procedure ends. If the alarm is not cleared, go to 5.




Maintenance Guide.

----End

Related Information

None.

2.37 ALM-18394 Power Amplification Over-Temperature

Description

If the operating temperature of the SPAM/CMPA/OMPA is too high, the components are

affected. When the operating temperature of the SPAM/CMPA/OMPA is too high, the

ALM-18394 is reported.

Attribute


18394 Major Fault

Parameters

Name Meaning







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Name Meaning




5





After the ALM-18394 is reported, the system reduces the output power automatically. Therefore,

the BTS coverage is affected. If the operating temperature increases continuously, the SPAM/

CMPA/OMPA may be powered off.

System Actions

None.

Possible Causes


l The ambient temperature is too high.

l The fan rotation speed is exceptional and the heat dissipation is ineffective.






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Workflow


Procedure

Step 1 Check whether the ambient temperature of the equipment room is normal.

l If the ambient temperature of the equipment room is exceptional, take measures to lower the

ambient temperature. Check whether the alarm is cleared. If the alarm is cleared, the


l If the ambient temperature of the equipment room is normal, go to 2.

Step 2 Check whether a fan failure alarm is generated.

l If a fan failure alarm exists, remove the fan and check whether something blocks the fan.

(1) If something blocks the fan, remove it. Check whether the alarm is cleared. If the alarm

is cleared, the procedure ends. If the alarm is not cleared, go to 4.

(2) If nothing blocks the fan, go to 3.

l If a fan failure alarm is not generated, check whether the fan rotation speed is exceptional.

(1) If the fan rotation speed is exceptional, go to 3.

(2) If the fan rotation speed is normal, go to 4.






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Step 3 Replace the fan.

To replace the fan, refer to the BTS Site Maintenance Guide. Check whether the alarm is cleared.

If the alarm is cleared, the procedure ends. If the alarm is not cleared, go to 4.

Step 4 Power on the RF module.





Refer to the BTS Site Maintenance Guide to replace the SPAM/CMPA/OMPA that reports the

ALM-18394.

----End

Related Information None.

2.38 ALM-18395 Power Amplification Closed

Description

When the SPAM/CMPA/OMPA is in position, the ALM-18395 is reported if the SPAM/CMPA/

OMPA is powered off.

Through this alarm, you can find in time the status of the SPAM/CMPA/OMPA.

Attribute



Parameters

Name Meaning





5






2-89



Name Meaning




After the PA module is powered off, it has no output power. The services on the sector carrier

of STDM/CMTR/OMTR are interrupted.

System Actions

None.


l The temperature of the SPAM/CMPA/OMPA is too high.

l The power supply voltage of the SPAM/CMPA/OMPA is abnormal.

Workflow


Procedure

Step 1 Check whether the temperature of the SPAM/CMPA/OMPA exceeds 95℃.






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l If the temperature of the SPAM/CMPA/OMPA exceeds 95℃, see ALM-18394 Power

Amplification Over-Temperature to clear the fault. Check whether the alarm is cleared. If


l If the temperature of the SPAM/CMPA/OMPA is lower than 95℃, go to 2.

Step 2 Check whether the alarm related to the SPAM/CMPA/OMPA power exception is generated.

l If the alarm related to the overvoltage or undervoltage of the SPAM/CMPA/OMPA power

supply is generated, see ALM-18364 Voltage of Power Amplification Power Supply Too

Low and ALM-18363 Voltage of Power Amplification Power Supply Too High to clear the

alarm. Check whether the alarm is cleared. If the alarm is cleared, the procedure ends. If the

alarm is not cleared, the procedure ends.

l If the alarm related to the overvoltage or undervoltage of the SPAM power supply is not

generated, the procedure ends.

----End

Related Information

None.

2.39 ALM-18400 Standing Wave Alarm

Description

The voltage standing wave ratio (VSWR) is measured in real time based on the ratio of transmit

power to the reflection power. If the VSWR exceeds the threshold, the ALM-18400 is reported.

Through the alarm, you can find in time the fault in the VSWR.

Attribute


18400 Major Fault

Parameters

Name Meaning





5





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Name Meaning


Subunit ID For the STDM, it is the ID of the subunit where the alarm is generated, with thevalue ranging from 0 to 2


The transmit power of the sector carrier decreases and the BTS coverage is affected.

System Actions

None.

Possible Causes


l The VSWR of the antenna system is too high.

l The connection between the jumper and the STDM/CMTR/OMTR is exceptional.

l The STDM/CMTR/OMTR is faulty.






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Workflow


Procedure


Step 2 Reconnect the jumper of the antenna system to the STDM/CMTR/OMTR.





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Step 3 Check whether the VSWR of the antenna system is normal.

l If the VSWR is exceptional, check the antenna system and clear the fault. Check whether the


5.

l If the VSWR is normal, check the connection between the jumper at the top of the cabinet

and the STDM/CMTR/OMTR. Check whether the alarm is cleared. If the alarm is cleared,

the procedure ends. If the alarm is not cleared, go to 5.

Step 4 Check whether the VSWR is greater than 2.5.

Check the VSWR at the power input port of the STDM/CMTR/OMTR.

l If the VSWR is greater than 2.5, refer to the BTS Site Maintenance Guide to replace the

STDM/CMTR/OMTR that reports the ALM-18400.

l If the VSWR is less than 2.5, perform 5.




Maintenance Guide.

----End

Related Information

None.

2.40 ALM-18525 RF Feedback PLL Unlocked

Description

If the phase-locked loop (PLL) of the STDM/CMTR/OMTR in the RF feedback channel is

unlocked, the related service is interrupted. When the PLL of the RF feedback channel is

unlocked, the ALM-18525 is reported.

Through this alarm, you can find in time the fault in the RF PLL unlocked.

Attribute








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Parameters

Name Meaning





5





System Actions

None.

Possible CausesThe STDM is faulty.

Procedure





----End

Related Information

None.

2.41 ALM-18526 RF Reverse PLL Unlocked

Description

If the phase-locked loop (PLL) of the STDM/CMTR/OMTR in the RF reverse channel is

unlocked, the related service is interrupted. When the PLL of the RF reverse channel is unlocked,the ALM-18526 is reported.





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Through this alarm, you can find in time the fault in the RF reverse PPL unlocked.

Attribute



Parameters

Name Meaning





5





System Actions

None.

Possible Causes

The STDM is faulty.

Procedure

Step 1 Check the STDM/CMTR/OMTR. If it is faulty, refer to the BTS Site Maintenance Guide to

replace the STDM/CMTR/OMTR that reports the ALM-18526.

Step 2 If the it is normal, the procedure ends.

----End

Related Information

None.






Issue 01 (2010-05-10)



2.42 ALM-18527 RF Forward PLL Unlocked

Description

If the phase-locked loop (PLL) of the STDM/CMTR/OMTR in the RF forward channel is

unlocked, the related service is interrupted. When the PLL of the RF forward channel is unlocked,


Through this alarm, you can find in time the fault in the RF forward PLL unlocked.

Attribute



Parameters

Name Meaning





5





System Actions

None.

Possible Causes






2-97



Procedure





----End

Related Information

None.




bts common alarm reference (v300_01)

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