m801

MaintenanceAccess

MMN:DSU (DLUD based)

A50016-D1108-M801-1-7620

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MMN:DSU (DLUD based) MaintenanceAccess

! Important Notice on Product SafetyElevated voltages are inevitably present at specific points in this electrical equipment. Some of theparts can also have elevated operating temperatures.Non-observance of these conditions and the safety instructions can result in personal injury or in prop-erty damage.Therefore only trained and qualified personnel may install and maintain the system.The system complies with the standard EN 60950 / IEC 60950. All equipment connected has tocomply with the applicable safety standards.

Copyright (C) Siemens AG 1999.Issued by the Information and Communication Networks GroupHofmannstrae 51D-81359 Mnchen

Technical modifications possible.Technical specifications and features are binding only insofar asthey are specifically and expressly agreed upon in a written contract.

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Reason for UpdateSummary:New type of DSU

Details:

Chapter/Section Reason for Update

Issue HistoryIssueNumber

Date of issue Reason for Update

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This document consists of a total of 62 pages. All pages are issue 1.

Contents1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71.1 References to Additional Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71.2 Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2 Task List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3 Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113.1 Fault clearance in the DLU system or in the DLU equipment . . . . . . . . . . . 13

DLU2043.2 Fault clearance DLU module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

DLU2083.3 CCS or PCM fault clearance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

DLU2143.4 Fault clearance IWE or Modem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

DLU2163.5 Fault clearance DLU Recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

DLU2343.6 Fault clearance LOADING DLU NOT SUCCESSFUL . . . . . . . . . . . . . . . . 33

DLU2413.7 Fault clearance at loss of original fault message . . . . . . . . . . . . . . . . . . . . 39

PR:DLU3.8 Bus distributor replacement procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

REP:BD3.9 Direct Current Converter replacement procedure. . . . . . . . . . . . . . . . . . . . 43

REP:DCC3.10 DLU system module replacement procedure . . . . . . . . . . . . . . . . . . . . . . . 47

REP:DLUS3.11 Fuse replacement procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

REP:FUSE3.12 IWE replacement procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

REP:IWE3.13 Module replacement procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

REP:MOD

4 Tables and Overviews . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59TAB:IN

4.1 DCC supply and BD distribution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61TAB:BD/DCC

4.2 Emergency Connection due to Room temperature. . . . . . . . . . . . . . . . . . . 62

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1 Introduction

1.1 References to Additional Information

If you are familiar with the basic principle of the fault clearance you can start withfault clearance at once. Otherwise we advise that you read the appropriate registerin Documentation Overview in order to be able to use the manual effectively for faultclearance purposes. The Documentation Overview contains detailed information onall general aspects of fault clearance.

When replacing or handling modules please observe the Safety Instructions forpersonal and products (EN60950/IEC60950).

A description of DSU hardware and associated structure and function can be foundin following information: Data Service Unit

1.2 Diagnosis

For information about diagnosis and functions tested or interruption of diagnosis, seeNonstandard Maintenance Manual NM:DSU.

i The Data Service Unit is called DLU in the various sections because the term DLUcontinues to be used in the fault reports and diagnostic results.

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2 Task ListPreventive maintenance in DLU is only necessary for the blowers. The filter mats shouldbe replaced when necessary or at the latest after 6 months.

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3 ProceduresOverview of Procedures

DLU204 Fault clearance in the DLU system or in the DLU equipment DLU208 Fault clearance DLU module DLU214 CCS or PCM fault clearance DLU216 Fault clearance IWE or Modem DLU234 Fault clearance DLU Recovery DLU241 Fault clearance LOADING DLU NOT SUCCESSFUL PR:DLU Fault clearance at loss of original fault message REP:BD Bus distributor replacement procedure REP:DCC Direct Current Converter replacement procedure REP:DLUS DLU system module replacement procedure REP:FUSE Fuse replacement procedure REP:IWE IWE replacement procedure REP:MOD Module replacement procedure

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MMN:DSU (DLUD based)DLU204

3.1 Fault clearance in the DLU system or in the DLU equip-ment

DLU204

1 Determine suspect moduleRefer to the fault report to find the DLU number and the module address.

2 Decision blockIs a fault report WRONG DLU TYPE output? Y h...3

N h...6

3 Information block

Module DLUS is defective or has the wrong firmware.

4 Module replacement

Use the appropriate replacement procedure. i ...REP:DLUS

5 Information block

Continue in block: h...14

6 Interrogate operating stateb STAT DLU:DLU=dlu;

7 Decision blockRefer to the state interrogation to determine the operating state of the partnerDLU side that is not specified in the fault report. Is the partner DLUC ACT andACCESS-DEGRADING = NON? Y h...8

N h...27

Configuration of one DLU side to MBL when the other side is also faulty willresult in total failure of the DLU.

8 Decision blockIs the DLUC concerned ACT and ACCESS-DEGRADING = NON? Y h...9

N h...10

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9 Configure the relevant DLUC to CBL

Command for DLUC0:

b CONF DLU:DLU=dlu,DLUC0=Y,OST=CBL;

Command for DLUC1:

b CONF DLU:DLU=dlu,DLUC1=Y,OST=CBL;Following system responses are possible:1R: A command repetition follows with the addition of: STARTED2R: A command repetition follows with the addition of: EXEC'DContinue after 6 minutes fault clearance. If the system reaction 2R appearswithin 6 minutes, continue the fault clearance immediately.

10 Configure the relevant DLUC to MBL

Command for DLUC0:

b CONF DLU:DLU=dlu,DLUC0=Y,OST=MBL;

Command for DLUC1:

b CONF DLU:DLU=dlu,DLUC1=Y,OST=MBL;CAUTION: THIS SWITCHOVER-REQUEST MAY RESULTIN LOST CALLS!DO YOU WANT IT TO BE EXECUTED? (YES: +/NO: -)

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