AT&T MERLIN 820 User Manual

CONTENTS
HOW TO USE THIS MANUAL
FIRST:
Perform the Tests in the “BASIC TROUBLE TESTS”
Section
SECOND:
Determine Whether the Trouble Is Constant or
Intermittent
THIRD:
Describe the Trouble
FOURTH:
Select the Correct Trouble Isolation
Procedure
FIFTH:
Perform the Trouble Isolation Procedure
Selected
SIXTH:
Replace Faulty Components
AN OVERVIEW OF YOUR SYSTEM
BASIC TROUBLE TESTS
TESTS TO DETERMINE IF THE TROUBLE IS IN YOUR
SYSTEM
A.
B.
C.
D.
E.
SYMPTOM-BASED TESTS
List of Symptom-Based Tests
Voice Terminal Does Not Ring
Cannot Make an Outside Call
Trouble with Indicator Lights, Speaker, or Ringing
Some Custom Features Do Not Work
All Voice Terminals Have No Lights and No Dial Tone (Entire Sys-
13
13
13
14
15
19
tem Down)
Voice Terminal Rings Constantly
21
25
F.
GENERAL TESTS
IF TROUBLE REMAINS
HOW TO SELECT THE CORRECT PROCEDURE
TEST SEQUENCE
TROUBLE ON ONE VOICE TERMINAL
TEST A:
TEST B:
TEST C:
TEST D:
VOICE TERMINAL TEST
CONTROL UNIT TEST
VOICE TERMINAL CORDS AND CABLE TEST
2-LINE/5-TERMINAL EXPANSION MODULE
TEST
TROUBLE ON MORE THAN ONE VOICE TERMINAL
TEST A:
CONTROL UNIT TEST
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3
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AT&T MERLIN 820 Specifications

General

Brand	AT&T
Model	MERLIN 820
Category	Conference System
Language	English