AT&T MERLIN 410 User manual

MERLIN
COMMUNICTIONS SYSTEM
SERVICE MANUAL
MODELS 206 AND 410
American Bell
Advanced Information Systems
An AT&T Company

SERVICE MANUAL
MERLIN
✽
COMMUNICATIONS SYSTEM
MODELS 206 AND 410
* Trademark of AT&T Co.
©1983 Western Electric
All Rights Reserved
Printed in U.S.A.
Issue G, August 1983 999-501-135 AB

CONTENTS
INTRODUCTION
HOW TO USE THIS MANUAL
PREINSTALLATION
INTRODUCTION
IMPORTANT TELEPHONE NUMBERS
GETTING STARTED
A. Checking the Floor Plan
B. Checking the Shipment
C. Getting the Tools You Need
CIB CROSS REFERENCE
INSTALLATION
INSTALLING THE CONTROL UNIT
Environmental Requirements
A. Positioning the Control Unit
B. Installing the Cartridges
C. Supplying Power to the Control Unit
D. Connecting the Control Unit to the Network Interface
E. Setting the Control Unit Switches
“Tone-Pulse” Switch
“Ringing” or “Outward Calls” Switches
INSTALLING THE CORDS/CABLES
A. Installing the Voice Terminal Extension Cords
B. Voice Terminal Cabling
Getting Started
Planning and Arranging the Control Unit and Jacks
Installing the Cable
Labeling the Cables
Installing the Jacks at the Control Unit Location
Fastening the Cable(s)
Installing the Jacks at the Voice Terminal Location
C. Installing the Voice Terminals
Getting Started
Assembling the Voice Terminals
TESTING PREPARATION
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3
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3
4
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5
5
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13
13
14
14
15
15
15
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25
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TESTING THE VOICE TERMINALS
TESTING THE SYSTEM
LABELING THE VOICE TERMINAL INTERCOM NUMBERS
SYSTEM CHANGES
INTRODUCTION
29
30
32
35
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36
36
37
37
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39
TO CHANGE CONTROL UNIT SWITCHES
TO ADD AN OUTSIDE LINE
TO ADD A VOICE TERMINAL
TO ADD A VOICE TERMINAL ACCESSORY
TO MOVE A VOICE TERMINAL LOCATION
TO SWAP VOICE TERMINAL LOCATIONS
TO ADD A CARTRIDGE
QUICK CHECK TESTS
INTRODUCTION
39
QUICK CHECKS TO DETERMINE WHETHER THE TROUBLE IS IN YOUR
SYSTEM
39
SYMPTOM-BASED QUICK CHECKS 41
Symptom List 41
A.Voice Terminal Does Not Ring
B.
C.
D.
E.
Basic Service
Feature Package 1 Service
Cannot Make an Outside Call
Basic Service
Feature Package 1 Service
Trouble with Indicator Lights, Speaker, or Ringing
Some Custom Features Do Not Work
All Voice Terminals Have No Lights and No Dial Tone (Entire System
Down)
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41
41
41
41
41
42
42
43
GENERAL QUICK CHECKS
44
IF TROUBLE REMAINS
45
MAINTENANCE EXCHANGE PROCEDURES
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INTRODUCTION

INTRODUCTION
HOW TO USE THIS MANUAL
This Service Manual provides instructions for installing, changing and adding, troubleshoot-
ing, and, if necessary, replacing components on your MERLIN* communications system. It is
intended for use by the person in your company who is responsible for telephone service.
Reading the whole manual is not necessary; you need only read the introduction and those
sections relevant to the task you have to perform.
This manual is divided into five sections:
●Preinstallation: Contains instructions to prepare for the installation of your MERLIN
communications system.
●Installation: Contains instructions for installation and preliminary testing of your
MERLIN communications system.
●System Changes: Provides directions for changing and adding to your MERLIN com-
munications system.
Quick Check Tests: Describes simple tests to identify the source of problems your
●
MERLIN communications system may have.
●Maintenance Exchange Procedures: Describes how American Bell allows you to
exchange faulty equipment for working replacements.
Note: Notices required by the FCC are printed in the User’s Guide inside the front and
back covers. You should be familiar with this information before installing your
new equipment.
Descriptive and operational information is provided in the User’s Guide. Customer Informa-
tion Brochures (CIBs) describe the physical characteristics of each device and provide instal-
lation instructions. One CIB is packaged with each voice terminal or other system com-
ponent. Both the CIB and this manual are required for proper component installation.
* Trademark of AT&T Co.
1

2
PREINSTALLATION

PREINSTALLATION
INTRODUCTION
If you are installing your own MERLIN communications system, use the instructions in the
“Preinstallation” and “Installation” sections. These instructions are divided as follows:
Getting Started
●
●Installing the Control Unit
Installing the Cords/Cables
●
●
Installing the Telephones (Voice Terminals)
●Testing the Telephones (Voice Terminals)
●
Testing the System
●Labeling the Telephone (Voice Terminal) Intercom Number
Whenever you see a DANGER, Warning, or Caution, please read it carefully. These
terms mean the following:
●DANGER — Possibility of personal injury.
●Warning — Possibility of equipment damage.
●Caution — Possibility of service interruption.
IMPORTANT TELEPHONE NUMBERS
●For questions concerning installation or repair, call the American Bell toll-free
HELP number:
1-800-628-2888
●To order equipment from the National Sales Center, call the American Bell toll-free
SALES number:
1-800-247-1212
3

GETTING STARTED
This section helps you get ready to install your MERLIN communications system. Begin by
checking the floor plan that you prepared with your order, verifying the equipment received,
and getting the tools you need. After you complete each step, check it off in the box on the
left.
A. Checking the Floor Plan
❑Check the floor plan that you prepared when you ordered your system, to make sure
that it agrees with the layout of the installation location. Figure 1 show a typical sys-
tem.
10–BUTTON
VOICE TERMINAL
D8AF TERMINAL
EXTENSION
CORD
LINE
CORDS
D8W MODULAR
TERMINAL CORD
MODEL 206 CONTROL UNIT
NETWORK
INTERFACE
MODULAR
Figure 1
4

Preinstallation (cont’d)
B. Checking the Shipment
❑Open all packages and make sure you have all the items you ordered. Use your copy of
tion” section.
the order form to check your shipment.
For help in identifying items, refer to Figure 2 (Illustrated Parts List). If there are any
discrepancies, call your sales representative or the HELP number provided in the “Introduc-
Note 1:
Note 2:
Note 3:
Do not discard Customer Information Brochures (CIBS) included with items in
your shipment. These instructions may be referred to in this Manual. To avoid
losing the instructions, keep them with the items until you need to use them.
Do not discard the cartons and packaging material. You may have overlooked a
small item, or you may need the cartons and packing to return damaged or defec-
tive items.
Save the extra serial number tags loosely packed with the control unit, voice ter-
minals, and cartridges.
C. Getting the Tools You Need
Get the following tools:
❑ 1.
❑ 2.
❑ 3.
❑ 4.
Hammer
Screwdriver
Drill and appropriate bits, 5/8-inch and smaller (if control unit, voice terminals, or the
extra-alert switch are to be mounted on a wall, or if you must route wiring through
walls).
Stapler and staples appropriate for attaching wiring to baseboard.
5

(6A)
CONTROL UNIT
DOOR
(6106-CU1) (6110-CU1)
2-LINE/6-TERMINAL 4-LINE/10-TERMINAL
CONTROL UNIT
CONTROL UNIT
MOUNTING
HOLES
TEMPLATE
MOUNTING
SCREWS
EXPANSION
BOLTS
MOUNTING
BRACKET
BASE PLATE
(CS 100A) CONTROL UNIT
WALL MOUNTING KIT (61201)
Figure 2 (1 of 6)
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