IBM 2220 Nways 300 User manual

2220 Nways BroadBand Switch
Models 300, 500, and 501 IBM
Service Guide
SY33-2121-01

2220 Nways BroadBand Switch
Models 300, 500, and 501 IBM
Service Guide
SY33-2121-01

Note|
Before using this information and the product it supports, be sure to read the general information under “Notices” on page xi.
Second Edition (March 1999)
The information contained in this manual is subject to change from time to time. Any such changes will reported in subsequent
revisions.
Order publications through your IBM representative or the IBM branch office serving your locality. Publications are not stocked at the
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 Copyright International Business Machines Corporation 1998, 1999. All rights reserved.
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Contents
Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii
Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix
Notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi
European Union (EU) Statement ........................... xii
Year 2000 Statement ................................. xii
Electronic Emission Notices .............................. xii
Safety Notices for United Kingdom ........................ xiii
Safety Notice for Australia ............................. xiv
Telecommunication Connectivity Notices ...................... xiv
Notice to Users of Machines Installed in the U.S. ............... xiv
Notice to Users of Machines Installed in Canada ................ xv
Trademarks and Service Marks ........................... xvi
General and Product Safety ............................ xvii
Service Inspection Safety Procedures ........................ xvii
Safety and Disposal Instructions for Batteries ................... xvii
Service Inspection Safety Procedures ....................... xviii
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviii
Sicherheitsüberprüfungen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxv
Einführung . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxv
Safety Label Locations .................................. xl
Safety Label Identifications .............................. xliv
About this Manual .................................. xlix
Aim of this Manual ................................... xlix
Who Should Read this Manual ............................ xlix
How this Manual is Organized ............................ xlix
Chapter 1. START - Finding a Service Procedure ............... 1-1
Service Operation via Nways Switch Administration Station ........... 1-2
Chapter 2. Introduction / Overview ........................ 2-1
Typical Broadband Network Based on 2220 .................... 2-1
2220 Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2220 Control Panel Functions ............................ 2-3
Chapter 3. Nways Switch Administration Station Functions ........ 3-1
How to Start on the Local 2220 ........................... 3-1
How to Logon to the Remote 2220 ......................... 3-1
Nways Switch Administration Station Windows Overview ............. 3-5
How to Display the CMIP Status ........................... 3-8
How to Display the Alarm Desk .......................... 3-11
How to Display the Nways Switch Configuration ................. 3-13
How to Display the Test Event Desk ........................ 3-18
How to Find a TCP/IP Address ........................... 3-20
How to Display the Nways Switch Control Program Inventory and Level ... 3-22
How to Remove a Line or Trunk Cable ...................... 3-24
How to Perform the Emergency Trunk Unlock .................. 3-26
 Copyright IBM Corp. 1998, 1999 iii

Chapter 4. 2220 Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
2220 Diagnostics Available from the NAS ..................... 4-1
All Switch to Line Interface Tests .......................... 4-2
Switch to Line Interface Test ............................. 4-2
Line Interface Test ................................... 4-4
Line Wrap Plug Test .................................. 4-5
Line Loopback Test .................................. 4-6
2220 Trunk Loopback Test .............................. 4-6
Loop Line and Loop Trunk .............................. 4-7
How to Run the All Switch to Line Interface Test ................. 4-8
How to Run the Switch to Line Interface Test .................. 4-10
How to Run the Line Interface Test ........................ 4-12
How to Run the Line Loopback Test ........................ 4-15
How to Test an ACDC Power and Battery .................... 4-25
Chapter 5. 2220 Problem Determination ..................... 5-1
MAP 0500: 2220 Basic Verification ....................... 5-2
Chapter 6. 2220 FRU Exchange .......................... 6-1
MAP: Before Exchanging an FRU ........................ 6-1
Opening The Doors And Covers of 2220 Installed in 37 U Rack ........ 6-6
Opening The Doors And Covers of 2220 Installed in 29 U Rack ........ 6-7
2220 Component Locations ............................. 6-9
Locating System Components in the 2220 .................... 6-9
Format of Location Identifier ............................ 6-9
Module Connector Positions ........................... 6-10
2220 Model 300/500/501 in 37 U Rack Example ............... 6-11
2220 Model 300/500/501 in 29 U Rack Example ............... 6-12
2220 Model 300/500 Unit Identification Examples ................ 6-13
2220 Front View in 37 U Rack ......................... 6-15
2220 Rear View in 37 U Rack .......................... 6-16
2220 Front View in 29 U Rack ......................... 6-17
2220 Rear View in 29 U Rack .......................... 6-18
Identify the ACDC Power Type ......................... 6-19
Identify the DC48 Power Type .......................... 6-20
Identify the APC Type .............................. 6-21
Exchange an ACDC ............................... 6-22
Exchange an APC ................................. 6-27
Exchange an ARC ................................ 6-29
Exchange a Battery ................................ 6-30
Exchange a Board ................................ 6-34
MAP: Prerequisite to Exchange a Clock ................... 6-39
Exchange a Clock ................................. 6-43
MAP: Prerequisites for Exchanging a Clock Redrive ............ 6-45
Exchange a Clock Redrive ............................ 6-50
Exchange a DC48 Power Input ......................... 6-51
Exchange a DCD1 or DCD2 ........................... 6-53
Exchange a Fan Box ............................... 6-55
Exchange an LCEE ................................ 6-56
Exchange an LCEB ................................ 6-58
Exchange an LCPB ................................ 6-60
Exchange an LCPE ................................ 6-62
Exchange a LIC .................................. 6-64
Exchange a Control Panel ............................ 6-66
iv 2220 Models 300, 500, and 501: Service Guide

MAP: Prerequisite to Exchange a Switch or Switch Redrive ........ 6-67
Exchange a Switch or Switch Redrive ..................... 6-69
After Exchanging a Switch or Switch Redrive ................. 6-71
Exchange a TPA ................................. 6-72
Exchange a Voice Server Adapter ....................... 6-73
Exchange a Voice Server Extension ...................... 6-74
Ending the Exchange Procedure .......................... 6-75
Leaving Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-75
Appendix A. Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
Power and Control Cables (With APC Type A) .................. A-2
Power 48 V DC Distribution (With APC Type A) ................. A-3
Power Control (With APC Type A) ......................... A-4
Control Panel and FAN Control (With APC Type A) ............... A-5
Power and Control Cables (With APC Type B) .................. A-6
Power 48 V DC Distribution (With APC Type B) ................. A-7
Power Control (With APC Type B) ......................... A-8
Control Panel and FAN Control (With APC Type B) ............... A-9
Clock Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-10
Appendix B. Maintenance Aids . . . . . . . . . . . . . . . . . . . . . . . . . B-1
Clock Module LED Segment Reference ...................... B-1
Shipping Group Tools ................................ B-2
Appendix C. 2220 Power Consumption .................... C-1
2220 Power Limits .................................. C-1
2220 Base Machine and Modules Power Consumption ............. C-1
Appendix D. Parts Catalog . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-1
How to Use This Parts Catalog ........................... D-2
Part Listing Glossary ................................. D-3
2220 Visual Index .................................. D-4
37 U Rack Visual Index ............................... D-5
29 U Rack Visual Index ............................... D-6
Catalog Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-7
Assembly 1: 2220 Enclosure Assembly, Models 300, 500, and 501 ... D-8
Assembly 2: 2220 Control Panel and FAN Box Assembly ......... D-10
Assembly 3: 2220 AC/DC and DC Power Supply Assembly ........ D-12
Assembly 4: 2220 Board Assembly ...................... D-14
Assembly 5: 2220 Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . D-16
Assembly 6: LCBB and LCBE Assembly ................... D-18
Assembly 7: Internal Cables Assembly .................... D-20
Assembly 8: 37 U RACK Assembly ...................... D-22
Assembly 9: 29 U RACK Assembly Side Covers .............. D-24
Assembly 10: 29 U RACK Assembly Top, Rear, and Front Covers .... D-26
Assembly 11: 29 U RACK Assembly Details ................. D-28
Assembly 12: 29 U RACK Assembly Rear Side ............... D-30
Assembly 13: Power Attachment Cord Assembly .............. D-32
Appendix E. Part Number Index ......................... E-1
Bibliography . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X-1
Nways Switch Publications ............................. X-1
Nways 2220 Switch Manager Publications .................... X-1
Contents v

Related Publications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X-1
World Wide Web ................................... X-1
Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X-3
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X-13
vi 2220 Models 300, 500, and 501: Service Guide

Figures
0-1. 2220 Ground Wire A ............................ xix
0-2. 2220 Ground Wire B Between 2220-500and 2220-501 ......... xx
0-3. 2220 Ground Pin on Mainline ac/dc Power Cable ............ xxi
0-4. 2220 Ground Straps (Former Machine) .................. xxi
0-5. 2220 Ground Straps ............................. xxi
0-6. LCB Grounding via Screws ......................... xxii
0-7. LCB Grounding via Ground Wire .................... xxiii
0-8. Standard Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . xxiii
0-9. Bellcore Specification Connection .................... xxiii
0-10. Schutzleiter A am 2220 .......................... xxvii
0-11. 2220 Schutzleiter B zwischen 2220-500 und 2220-501 ........ xxviii
0-12. Schutzleiterkontakt am Hauptnetzkabel des 2220 ........... xxix
0-13. Schutzleiter am 2220 (vorheriges Modell) ............... xxix
0-14. 2220 Schutzleiter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxix
0-15. Erdung des Verteilerkastens über Schrauben .............. xxx
0-16. Erdung des Verteilerkastens über Schutzleiter .............. xxx
0-17. Standardanschluß . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxxi
0-18. Anschluß nach Bellcore-Norm ...................... xxxi
0-19. Safety Labels on Internal Front Cover ................... xl
0-20. Safety Labels on Internal Rear Board Cover ................ xl
0-21. Safety Labels on Internal Front Board Cover .............. xli
0-22. Safety Labels on Rear of the 2220 Rack ................. xli
0-23. Safety Label on LCB ............................ xlii
0-24. Safety Labels on Battery .......................... xliii
0-25. Power Label (PN 57G7919 and PN 57G7976) ............. xliv
0-26. Board Labels (PN 57G7920) ........................ xliv
0-27. Other Labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xlv
0-28. Labels Used for Europe, Taiwan, and Brazil (PN 57G7959) ...... xlv
0-29. Labels Used for Other Countries (PN 57G7958) ............ xlvi
0-30. Power Rating Label for DC48 ....................... xlvi
0-31. Power Rating Label for ACDC ....................... xlvi
0-32. Label for 2220 Rack (PN 80G3929) ................... xlvii
0-33. Label for LCB (PN 80G3928) ...................... xlvii
3-1. Nways Switch Desktop Display ...................... 3-1
3-2. Example of Expanded Tree ......................... 3-4
3-3. Example of Expanded Tree ......................... 3-6
3-4. Example of Options Available for a Selected Resource ........ 3-7
3-5. Example of Options Available for a Switch ................ 3-7
3-6. Example of Expanded Tree ......................... 3-9
3-7. Search Options in the Alarm Desk Window .............. 3-12
3-8. Nways Switch Desktop Window ..................... 3-20
3-9. Nways Swith Installation Window .................... 3-20
3-10. Installation Program Main Menu ..................... 3-20
3-11. Example of TCP/IP address ....................... 3-21
3-12. Example of Nways Switch Control Program Software Inventory ... 3-23
4-1. Area Tested by Switch to Line Interface Test .............. 4-2
4-2. Area Tested by Switch to Line Interface Test on LIC511 ........ 4-2
4-3. Area tested by Switch to Line Interface Test with a Wrap Plug .... 4-3
4-4. Area tested by Switch to Line Interface Test with a Wrap Plug on
LIC511 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
 Copyright IBM Corp. 1998, 1999 vii

4-5. Area Test by the Line Interface Test ................... 4-4
4-6. Area Tested by the Line Interface Test on LIC511 ........... 4-4
4-7. Area Tested by the Line Wrap Plug Test ................. 4-5
4-8. Area Tested by the Line Wrap Plug Test on LIC511 .......... 4-5
4-9. Area Tested by the Line Loopback Test ................. 4-6
4-10. Area Tested by the 2220 Trunk Loopback Test ............. 4-6
4-11. Loop Trunk and Loop Line on Remote 2220 ............... 4-7
4-12. Example of Test Selection ........................ 4-19
6-1. 2220 CPx Powering ............................. 6-2
6-2. 2220 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
6-3. Module Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
6-4. Front, Rear Door And Side Cover Latches for 37 U Rack ....... 6-6
6-5. Front, and Rear Door Opening for 29 U rack .............. 6-7
6-6. Side Cover Removing for 29 U rack ................... 6-8
6-7. 2220 Component Location in 37 U Rack ............... 6-11
6-8. 2220 Component Location in 29 U Rack ............... 6-12
6-9. 2220 Identification in 37 U Rack .................... 6-13
6-10. 2220 Identification in 29 U Rack .................... 6-14
6-11. 2220 Front View Location with NAS Type 7585 Installed in 37 U
Rack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-15
6-12. 2220 Rear View Location in 37 U Rack with NAS Type 7585
Installed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-16
6-13. 2220 Front View Location in 29 U Rack with NAS Type 6275
Installed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-17
6-14. 2220 Rear View Location in 29 U Rack with NAS type 6275
Installed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-18
6-15. APC Type Identification .......................... 6-21
6-16. 2220 Front View .............................. 6-39
6-17. 2220 Front View .............................. 6-45
6-18. 2220 Rear View .............................. 6-67
6-19. Display Power ON/OFF Switch ..................... 6-75
B-1. Clock Module LED Segment Reference ................ B-1
viii 2220 Models 300, 500, and 501: Service Guide

Tables
4-1. Resources and Available Diagnostics ................... 4-1
6-1. FRU Exchange . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
6-2. Examples of Location for the 2220 Models 300, 500, and 501 ... 6-14
C-1. Maximum total consumption allowed. .................. C-1
C-2. Base Machine and Module Power Consumption ........... C-1
 Copyright IBM Corp. 1998, 1999 ix

x2220 Models 300, 500, and 501: Service Guide

Notices
References in this publication to IBM products, programs, or services do not imply
that IBM intends to make these available in all countries in which IBM operates.
Any reference to an IBM product, program, or service is not intended to state or
imply that only IBM's product, program, or service may be used. Any functionally
equivalent product, program, or service that does not infringe any of IBM's
intellectual property rights may be used instead of the IBM product, program, or
service. Evaluation and verification of operation in conjunction with other products,
except those expressly designated by IBM, is the user's responsibility.
IBM may have patents or pending patent applications covering subject matter in
this document. The furnishing of this document does not give you any license to
these patents. You can send license inquiries, in writing, to the IBM Director of
Licensing, IBM Corporation, 500 Colombus Avenue, Thornwood, New York 10594,
U.S.A. Commercial Relations, IBM Corporation, Purchase, NY 10577, U.S.A.
 Copyright IBM Corp. 1998, 1999 xi

European Union (EU) Statement
This product is in conformity with the protection requirements of EU Council
Directive 89/336/EEC on the approximation of the laws of the Member States
relating to electromagnetic compatibility. IBM can not accept responsibility for any
failure to satisfy the protection requirements resulting from a non-recommended
modification of the product, including the fitting of non-IBM option cards.
Year 2000 Statement
This product is Year 2000 ready. When used in accordance with its associated
documentation, it is capable of correctly processing, providing, and/or receiving
date data within and between the 20th and 21st centuries, provided all other
products (for example, software, hardware, and firmware) used with the product
properly exchange accurate date data with it.
For more information, refer to:
http://www.ibm.com/year2000
Electronic Emission Notices
Federal Communications Commission (FCC) Statement
Note: This equipment has been tested and found to comply with the limits for a
Class A digital device, pursuant to the Part 15 of FCC Rules. These limits are
designed to provide reasonable protection against harmful interference when the
equipment is operated in a commercial environment. This equipment generates,
uses, and can radiate radio frequency energy and, if not installed and used in
accordance with the instruction manual, may cause harmful interference to radio
communications. Operation of this equipment in a residential area is likely to cause
harmful interference, in which case the user will be required to correct the
interference at his own expense.
Properly shielded and grounded cables and connectors must be used in order to
meet FCC emission limits. IBM is not responsible for any radio or television
interference caused by using other than recommended cables and connectors or by
unauthorized changes or modifications to this equipment. Unauthorized changes or
modifications could void the user's authority to operate this equipment.
This device complies with Part 15 of the FCC Rules. Operation is subject to the
following two conditions: (1) this device may not cause harmful interference, and (2)
this device must accept any interference received, including interference that may
cause undesired operation.
Industry Canada Compliance Statement
This Class A digital apparatus complies with Canadian ICES-003.
Avis de conformité aux normes d'Industrie Canada
Cet appareil numérique de la classe A est conforme à la norme NMB-003 du
Canada.
xii 2220 Models 300, 500, and 501: Service Guide

Japanese Voluntary Control Council for Interference (VCCI) Statement
This product is a Class A Information Technology Equipment and conforms to the
standards set by the Voluntary Control Council for Interference by Information
Technology Equipment (VCCI). In a domestic environment this product may cause
radio interference in which case the user may be required to take adequate
measures.
Harmonics Compliance (JEIDA)
This product conforms to the Harmonics Guideline (JEIDA). The input current of
this product is less than or equal to 20 A per phase.
Korean Communications Statement
Please note that this device has been certified for business use with regard to
electromagnetic interference. If you find this is not suitable for your use, you may
exchange it for one of residential use.
Taiwanese Class A Warning Statement
This is a Class A product. In a domestic environment this product may cause radio
interference in which case the user will be required to take adequate measures.
Safety Notices for United Kingdom
1. The IBM 2220 Nways BroadBand Switch is manufactured according to the
International Safety Standard EN 60950 and as such is approved in the UK
under the General Approval Number NS/G/1234/J/100003 for indirect
connection to the public telecommunication network.
2. The network adapter interfaces housed within the IBM 2220 Nways BroadBand
Switch are approved separately, each one having its own independent approval
number. These interface adapters, supplied by IBM, do not use or contain
excessive voltages. An excessive voltage is one that exceeds 42.4 V peak ac
or 60 V dc. They interface with the IBM 2220 Nways BroadBand Switch using
Safety Extra Low Voltages (SELV) only. In order to maintain the separate
(independent) approval of the IBM adapters, it is essential that other optional
cards, not supplied by IBM, do not use mains voltages or any other excessive
Notices xiii

voltages. Seek advice from a competent engineer before installing other
adapters not supplied by IBM.
Safety Notice for Australia
In Australia, the LIC545 and LIC546 must be connected only to Safety Extra Low
Voltage (SELV) networks.
If an attachment to a Telephone Network Voltage (TNV) network is required, you
must use a LIC515 instead of a LIC545, and a LIC516 instead of a LIC546.
Telecommunication Connectivity Notices
Notice to Users of Machines Installed in the U.S.
This equipment complies with Part 68 of the FCC rules. On the LIC module of this
equipment is a label that contain, among other information, the FCC registration
number. If requested, this information must be provided to the telephone company.
If this equipment causes harm to the telephone network, the telephone company
will notify you in advance that temporary discontinuance of the service may be
required. If advance notice is not practical, the telephone company will notify you as
soon as possible. Also, you will be advised of your right to file a complaint with the
FCC if you feel it is necessary.
The telephone company may make changes in its facilities, equipment, operations,
or procedures, that could affect the operation of the equipment. If this happens, the
telephone company will provide advance notice in order for you to make the
necessary modifications to maintain uninterrupted service.
If you experience trouble with this equipment, please contact (800) IBM-SERV for
repair and warranty information. If the trouble is causing harm to the telephone
network, the telephone company may request you to remove the equipment from
the network until the problem is resolved.
No repair can be done by you, customer. Please contact (800) IBM-SERV.
This equipment cannot be used on telephone company-provided coin service.
Connection to Party Line Service is subject to state tariffs.
Equipment Ordering Information for U.S. Machines
This section provides information about Facility Interface Codes and Service Order
Codes that are needed to order the corresponding services to the carrier company.
Please refer to “Notice to Users of Machines Installed in the U.S.” for the legal
information related to the connection of this equipment to the telephone network.
LIC514
Facility Interface Code Service Order Code Module type
04DU9-BN 6.0F LIC514
04DU9-DN 6.0F LIC514
04DU9-1KN 6.0F LIC514
04DU9-1SN 6.0F LIC514
xiv 2220 Models 300, 500, and 501: Service Guide

The standard connecting arrangement code for this equipment is:
Connector type 8-position miniature
Connector model RJ48C
Cable length 30 m (98 ft) maximum
R.E.N Not applicable.
LIC544
The standard connecting arrangement code for this equipment are:
Connector type 8-position miniature
Connector model Not Applicable
Cable length 30 m (98 ft) maximum
R.E.N Not applicable
or,
Connector type 15-position
Connector model DB15F
Cable length 30 m (98 ft) maximum
R.E.N Not applicable
Facility Interface Code Service Order Code Module type
04DU9-BN 6.0P LIC544
04DU9-DN 6.0P LIC544
04DU9-1KN 6.0P LIC544
04DU9-1SN 6.0P LIC544
Notice to Users of Machines Installed in Canada
The Industry Canada label identifies certified equipment. This certification means
that the equipment meets certain telecommunications network protective,
operational and safety requirements as prescribed in the appropriate Terminal
Equipment Technical Requirements document(s). The Department does not
guarantee the equipement will operate to the user's satisfaction.
Before installing this equipment, users should ensure that it is permissible to be
connected to the facilities of the local telecommunications company. The equipment
must also be installed using an acceptable method of connection. The customer
should be aware that compliance with the above conditions may not prevent
degradation of service in some situations.
Repairs to certified equipment should be coordinated by a representative
designated by the supplier. Any repairs or alterations made by the user to this
equipment, or equipment malfunctions, may give the telecommunications company
cause to request the user to disconnect the equipment.
Users should ensure for their own protection that the electrical ground connections
of the power utility, telephone lines and internal metallic water pipe system, if
present, are connected together. This precaution may be particularly important in
rural areas.
Notices xv

Caution: Users should not attempt to make such connections themselves, but
should contact the appropriate electric inspection authority, or electrician, as
appropriate.
Equipment Ordering Information for Canadian Machines
LIC514: The standard connecting arrangement code for this equipment is:
Connector type 15-position or 8-position miniature
Connector model CA81A or CA48C
Cable length 30 m (98 ft) maximum
Load number Not applicable
Please refer to “Notice to Users of Machines Installed in Canada” on page xv for
the legal information related to the connection of this equipment to the telephone
network.
LIC544: The standard connecting arrangement code for this equipment is:
Connector type 15-position or 8-position miniature
Connector model CA81A or CA48C
Cable length 30 m (98 ft) maximum
Load number Not applicable
Please refer to “Notice to Users of Machines Installed in Canada” on page xv for
the legal information related to the connection of this equipment to the telephone
network.
Trademarks and Service Marks
The following terms, denoted by an asterisk (*), used in this publication, are
trademarks or service marks of IBM Corporation in the United States or other
countries:
The following terms, denoted by a double asterisk (**), used in this publication, are
trademarks of other companies:
IBM Nways OS/2
AT XGA NetView
RETAIN Presentation Manager
Hayes Hayes Microcomputer Products, inc.
xvi 2220 Models 300, 500, and 501: Service Guide

General and Product Safety
This product meets the safety standards. For more information, see the 2220
Nways BroadBand Switch Models 300, 500, and 501 ; Safety Information ,
GA33-0401 (P/N 80G4908), manual.
Service Inspection Safety Procedures
Service Inspection Safety Procedures - English xviii
Sicherheitsüberprüfungen - Deutsch xxv
xxiv
Safety and Disposal Instructions for Batteries
When disposing of the batteries, follow procedures in accordance with your national
or local regulations for recycling the materials. If no regulation of this kind exists,
return the batteries to your equipment seller or to IBM.
 Copyright IBM Corp. 1998, 1999 xvii

Service Inspection Safety Procedures
Introduction
A safety inspection procedure for the 2220 should be performed:
When it is inspected for an IBM agreement
When IBM service is requested and no service has recently been performed by IBM
When an alterations and attachments review is performed
When changes have been made to the equipment that might affect its safety.
If the inspection indicates unacceptable safety conditions, the conditions must be corrected before IBM
services the equipment.
Note: The correction of any unsafe condition is the responsibility of the owner of the equipment.
The 2220 areas and functions checked through these procedures are:
1. External covers
2. Safety labels
3. Grounding (earthing)
4. Circuit breaker and circuit protector rating
5. Input power voltage
6. Power ON indicators
7. Emergency power OFF of the board
8. Cooling
Steps 1 through 8 must be performed Power OFF, as follows:
Main CBs switched OFF on the 2220.
All the equipment installed in the 2220 rack or connected to it is OFF.
Power supplies at customer premises are switched OFF.
On the 2220 do not remove the power cords and ground wire .A/ in order to maintain the ground
protection (see Figure 0-1 on page xix).
1.External Covers
Check that:
All external covers are present on the 2220.
Appropriate service clearances and accesses are provided around the racks with external covers
opened.
Leave all external covers opened to allow further inspection steps.
2.Safety Labels
Check that:
All the safety labels are at the places indicated by letters in “Safety Label Locations” on page xl.
Each label corresponds to the correct model as indicated by the letter as shown in “Safety Label
Identifications” on page xliv.
xviii 2220 Models 300, 500, and 501: Service Guide