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Northern Telecom DMS-100 Series Maintenance Procedure

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297-7001-501
DMS-100 Family
DMS VoiceMail
Routine Maintenance Procedures
SPM 02
Standard
02.02
March
1994

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Summary of Contents for Northern Telecom DMS-100 Series

  • Page 1 297-7001-501 DMS-100 Family DMS VoiceMail Routine Maintenance Procedures SPM 02 Standard 02.02 March 1994...
  • Page 3 All rights reserved Printed in the United States of America Information is subject to change without notice. Northern Telecom reserves the right to make changes in design or components as progress in engineering and manufacturing may warrant. This device complies with Part 15 of the FCC rules. Operation is subject to the following two rules: (1) This device may not cause harmful interference.
  • Page 4 Publication history March 1994 Standard 02.02 is the first standard release of the SPM 02 version of this document. SPM 02 is the second software release for DMS VoiceMail. February 1993 Standard 01.03 is the third standard release of the SPM 01 version of this document.

  • Page 5: Table Of Contents

    Contents About this document Replacement parts v Regulatory notices v Routine maintenance procedures Task list 1-1 Explanatory and context-setting information 1-1 Summary flowchart 1-1 Step-action instructions 1-2 Tape drive maintenance 1-3 Tape drive maintenance 1-5 Cleaning the tape drive 1-5 Replacing cooling fan filters 1-9 Replacing the cooling fans 1-13 List of figures...
  • Page 6 iv Contents 297-7001-501 Standard 02.02 March 1994...

  • Page 7: About This Document

    Service Peripheral Module (SPM). These procedures are usually performed by maintenance technicians. Replacement parts For information regarding replacement parts for your SPM, please contact your Northern Telecom representative. Regulatory notices 1 Notice for Installations in Canada The Canadian Department of Communications label identifies certified equipment.
  • Page 8 Normally, no SPM modem port should share the line with any other device. If your Northern Telecom SPM causes harm to the telephone network, the telephone company may disconnect your service temporarily. The...
  • Page 9 About this document vii 3 The Load Number (LN) assigned to each terminal device denotes the percentage of the total load to be connected to a telephone loop which is used by the device, to prevent overloading. The termination on a loop may consist of any combination of devices subject only to the requirement that the sum of the Load Numbers of all the devices does not exceed 100.
  • Page 10 viii About this document 297-7001-501 Standard 02.02 March 1994...

  • Page 11: Routine Maintenance Procedures

    Routine maintenance procedures Task list The following list provides the names of all the procedures in this chapter. To find the appropriate routine maintenance procedure, look for its name in the left column and go to the page number listed in the right column. To perform Go to page Tape drive maintenance...

  • Page 12: Step-Action Instructions

    1-2 Routine maintenance procedures office, you will know to advise that office before you begin the step-action instructions. Step-action instructions The step-action instructions tell you how to perform the routine maintenance. Normally, you will perform the steps in order, but you may be directed to return to a previous step and repeat a sequence.

  • Page 13: Tape Drive Maintenance

    Routine maintenance procedures 1-3 Tape drive maintenance Task Maintaining the tape drive is a routine maintenance task required for the Service Peripheral Module. To replace the tape drive rather than maintain it, refer to NTP 297-7001-502, Card Replacement Procedures. Interval Because tape drive heads become contaminated with use, good preventative maintenance of the tape drive involves periodic cleaning.

  • Page 14: Tape Drive Maintenance

    1-4 Routine maintenance procedures Tape drive maintenance (continued) Summary of tape drive maintenance Remove tape from tape drive Turn power on tape drive off Push load lever to load position Clean recording head assembly Remove dust and debris from tape cavity Push load lever away from load position...

  • Page 15: Cleaning The Tape Drive

    Routine maintenance procedures 1-5 Tape drive maintenance (continued) Tape drive maintenance Preventative maintenance of the tape drive involves periodic cleaning. However, to ensure reliable tape drive performance, you should establish a regular cleaning schedule and observe the following precautions: • Maintain a clean, dust-free environment within the temperature and humidity limits listed in the specifications of the DMS VoiceMail system.

  • Page 16: Figure 1-1 Tape Drive Cleaning

    1-6 Routine maintenance procedures Tape drive maintenance (continued) Figure 1-1 Tape drive cleaning Sensor holes Tape head Cotton swab Tape drive maintenance Step Action To clean the recording head assembly, use an industry acceptable head-cleaning kit. WARNING Potential damage to the tape drive Do not spray glass cleaner on the tape drive.
  • Page 17 Routine maintenance procedures 1-7 Tape drive maintenance (continued) Tape drive maintenance (continued) Step Action Carefully wipe the head in the direction that the tape travels. (Refer to Figure1-1). Do not wipe perpendicularly or use a circular scrubbing motion. Discard the used swab and repeat steps 6 and 7 with new swabs until the swab shows no signs of dirt.
  • Page 18 1-8 Routine maintenance procedures 1-8 Routine maintenance procedures Tape drive maintenance Tape drive maintenance (continued) (end) 297-7001-501 Standard 02.02 March 1994...

  • Page 19: Replacing Cooling Fan Filters

    Routine maintenance procedures Routine maintenance procedures 1-9 Replacing cooling fan filters Replacing cooling fan filters Task The fan filters for the Service Peripheral Module require regular replacement. The filter is a disposable unit consisting of the filter material and frame. Used filters should be handled gently during removal to prevent dust escaping into the air, and should be removed from the Equipment room immediately.
  • Page 20 1-10 Routine maintenance procedures Replacing cooling fan filters (continued) Summary of replacing cooling fan filters Slide used filter out of tray. Slide new filter into tray. Dispose of used filter. 297-7001-501 Standard 02.02 March 1994...
  • Page 21 Routine maintenance procedures 1-11 Replacing cooling fan filters (continued) Replacing cooling fan filters Step Action Grasp the two tabs on the front edge of the used filter and gently slide the filter out of its tray. Slide the new filter into the tray. Dispose of the used filter immediately, outside the Equipment room.
  • Page 22 1-12 Routine maintenance procedures 1-12 Routine maintenance procedures 1-12 Routine maintenance procedures 1-12 Routine maintenance procedures Replacing cooling fan filters Replacing cooling fan filters Replacing cooling fan filters Replacing cooling fan filters (continued) (end) (end) (end) 297-7001-501 Standard 02.02 March 1994...

  • Page 23: Replacing The Cooling Fans

    Routine maintenance procedures 1-13 Replacing the cooling fans Task The cooling fans in the Service Peripheral Module should be replaced if they are not operating properly. A light may turn on at the frame supervisory panel (FSP) to indicate a malfunction. Interval The cooling fans need only be replaced as required.
  • Page 24 1-14 Routine maintenance procedures Replacing the cooling fans (continued) Summary of replacing the cooling fans Set Fan Fail Override switch to ON. Remove panel. Locate affected cooling fan. Slide fan out of cabinet. Slide new fan into cabinet. Connect new fan with four- pin connector.
  • Page 25 Routine maintenance procedures 1-15 Replacing the cooling fans (continued) Replacing the cooling fans Step Action At the frame supervisory panel (FSP), set the Fan Fail Override switch to Remove the panel at the bottom of the cabinet by removing the nine screws on the panel using a 1/4”...
  • Page 26 1-16 Routine maintenance procedures 1-16 Routine maintenance procedures 1-16 Routine maintenance procedures 1-16 Routine maintenance procedures Replacing the cooling fans Replacing the cooling fans Replacing the cooling fans Replacing the cooling fans (continued) (end) (end) (end) 297-7001-501 Standard 02.02 March 1994...
  • Page 28 DMS-100 Family DMS VoiceMail Routine Maintenance Procedures © 1993, 1994 Northern Telecom All rights reserved. Information is subject to change without notice. Northern Telecom reserves the right to make changes in design or components as progress in engineering and manufacturing may warrant.

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