Nortel Meridian Meridian 1 Parts list manual

Meridian 1
Hardware Replacement
Document Number: 553-3001-520
Document Release: Standard 17.00
Date: January 2002
Year Publish FCC TM
Copyright © 1990– 2002 Nortel Networks
All Rights Reserved
Printed in Canada
Information is subject to change without notice. Nortel Networks reserves the right to make changes in design
or components as progress in engineering and manufacturing may warrant. This equipment has been tested
and found to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC rules, and the
radio interference regulations of Industry Canada. 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 their own expense.
SL-1 and Meridian 1 are trademarks of Nortel Networks. Intel and Pentium are trademarks of Intel Corporation.
cPCI is a trademark of PCI Industrial Computer Manufacturers Group.

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Hardware Replacement
Revision history
January 2002 Standard 17.00. This document is up-issued to support Meridian 1
Release 25.40 systems. This document is up-issued to include Call Processor
Pentium (CP PII) and Fibre Network Fabric (FNF) for Option 81C.
April 2000 Standard 16.00. This is a global document and is up-issued for
X11 Release 25.0x.
November 1999 Standard 15.00. This document is reissued to include information on the
NTRB33 Fiber Junctor Interface (FIJI) and NTRB34 Core Network Interface
3 (CNI-3) cards.
June 1999 Standard 14.00. This document is reissued for X11 Release 24.
October 1997 Standard 13.00. This document is reissued to include information on the
NT5D10 Call Processor Card, the NT5D61 Input/Output Disk Unit with CD-
ROM (IODU/C), and the NT5D30 Dual Intergroup Switch (DIGS) card.
Changes are noted by revision bars in the margins.
August 1996 Standard 12.00. This document is reissued to include Call Processor (CP)
card memory requirements for Release 22 and other technical information.
December 1995 Standard 11.00. This document is reissued to include information on the
NT9D19 Call Processor Card and the circuit card replacement procedure for
replacing an IOP and a CMDU with an IOP/CMDU.

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553-3001-520 Standard 17.00 January 2002
July 1995 Standard 10.00. This document is reissued to include international
information to create a global Nortel Networks technical publication (NTP),
Meridian1Option81C,and minortextedits. Changestotechnicalcontent are
noted by revision bars in the margins.
December 1994 Standard 9.0. Reissued for technical content.
December 1994 Standard 8.0. This document is reissued to include updated information on
the Small Systems Multi Disk Unit (SMDU), Meridian 1 Option 51C, and
edits. Changes to technical content are noted by revision bars in the margins.
April 1994 Standard 7.0. Reissued to include theinformationfor Meridian 1 Option 61C.
Changes to technical content are noted by revision bars in the margins.
August 1993 Standard 6.0. Changes to technical content are noted by revision bars in the
margins.
April 1993 Standard 5.0. New information and changes to technical content are noted by
revision bars in the margins.
December 1992 Standard 4.0. New information and changes to technical content are noted by
revision bars in the margins.
December 1991 Standard 3.0. This document is reissued to include technical content updates.
Due to the extent of the changes, revision bars are omitted.
July 1990 Standard 2.0.
January 1990 Standard 1.0.

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Hardware Replacement
6
Contents
About this document . . . . . . . . . . . . . . . . . . . . . . . 7
Accessing the system . . . . . . . . . . . . . . . . . . . . . . . 9
Hardware replacement guidelines . . . . . . . . . . . . . 15
Replacing equipment . . . . . . . . . . . . . . . . . . . . . . . 21
Replacing an NT7D10 PDU with an
NT7D67CB PDU . . . . . . . . . . . . . . . . . . . . . . . . . . . . 233
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 243

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553-3001-520 Standard 17.00 January 2002

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8
About this document
This document applies to Meridian 1 Internet Enabled systems.
This document is a global document. Contact your system supplier or your
Nortel Networks representative to verify that the hardware and software
described is supported in your area.
This document tells you how to replace hardware in Meridian 1 systems.
Who should use this document
This document is intended for individuals responsible for system
maintenance.
How this document is organized
In this manual, “replacing hardware” means removing a faulty piece of
equipment and installing identical operating equipment. The procedures in
this document are based on the assumption that the system is properly
installed (for example, all card locations, option switch settings, and cable
connections are correct) and was fully operational before the hardware fault.
To use this document, you should have a basic knowledge of Meridian 1
maintenance procedures. Generally, only common tools (such as socket
wrenches, screwdrivers, and pliers) are required to perform these procedures.
This document does not provide procedures for locating and clearing faults.
See Fault Clearing (553-3001-510) to locate and clear faults.

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553-3001-520 Standard 17.00 January 2002

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Hardware Replacement
14
Accessing the system
Content list The following are the topics in this section:
Reference list . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Access through the system terminal . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Access through the maintenance telephone . . . . . . . . . . . . . . . . . . . . . 11
Reference list
The following are the references in this section:
•Administration (553-3001-311)
•System Management Applications (553-3001-301)
When you replace equipment, you often send commands to the system
software in order to disable faulty equipment and to enable and test newly
installed equipment.
You send maintenance commands to the system through the system terminal
or the maintenance telephone. This section gives the procedures for accessing
the system through these devices.
Note: The Multi User Login feature, available with software Release 19
and later, allows more than one device to interact with the Meridian 1.
Refer to System ManagementApplications (553-3001-301) for details on
using this feature.

Page 10 of 250 Accessing the system
553-3001-520 Standard 17.00 January 2002
Access through the system terminal
You can send maintenance commands and receive system messages by
accessing the CPU through an RS-232 device, such as a video display
terminal (VDT) or teletypewriter (TTY).
When you access the system through a system terminal, a login procedure is
required (see Procedure 1 on page 10). All system passwords are initially set
as 0000, but you can change passwords inthe Configuration Record (LD 17).
Note: If a sysload occurs before you save a new password in a data
dump, the last active password remains valid.
Each system has two levels of passwords: level 1 is forgeneral use, level 2 is
for administrative use. Either password is accepted in the login procedure.
Procedure 1
Access through the system terminal
1Press the return key.
a) If the response is a period (.), you are ready to log into the
system.
b) If the response is
OVL111 nn TTY xor OVL111 nn SL1
someone else is logged into the system. When they have
logged off, press return and go to Step 2 on page 10.
c) If the response is
OVL111 nn IDLE or OVL111 nn BKGD
you are ready to log into the system. Go to Step 2 on page 10.
d) If the response is
OVL000 >
you are already logged into the system. Go to Step 5 on
page 11.
Note: Responses vary with different Background Terminal packages.
2Log into the system by entering
LOGI
then press the return key.