HOW TO USE THIS MANUAL

TM 11-7025-234-23

HOW TO USE THIS MANUAL

This manual tells you how to troubleshoot and maintain Modem Unit MD-1149/MYQ-4A.

LOCATION OF SUBJECTS IN MANUAL

In this manual, paragraphs are numbered in order by chapter. For example,

paragraph 2-3 is the third paragraph in chapter 2. Pages are also numbered this

way. Using this numbering system, there are three easy ways to locate the

information you need in this manual.

Front cover locators

q Alphabetical

index

Index of maintenance procedures

Use the front cover locators and marked pages to quickly find the parts of the

manual shown on the cover. These locators mark portions of the manual which are

used often. If the information you need is not listed on the front cover, use the

alphabetical index at the back of this manual. It lists all subjects covered in

the manual and directs you to the subject by paragraph number. When you need a

specific maintenance procedure, use the index at the start of chapter 3 or 4. This

index lists all the maintenance procedures in the chapter and directs you to each

procedure by page number.

MAINTENANCE PROCEDURES

Maintenance procedures in this manual have two features which help you perform them

more easily:

Initial setup boxes

q First-time

performance aids

An initial setup box is used at the start of any procedure which requires setup

items before you perform it. This box lists items needed to perform the

procedure. If the box does not appear at the start of a procedure, no setup items

are needed.

If you are using this manual to perform a procedure for the first time, always read

through the entire procedure before you start. Always perform the task steps in

the order given. This will help assure correct performance. Use the illustrations

beside the tasks steps to find the parts of the equipment called out in the steps.

Some steps include a reference to another paragraph. Go to that paragraph if you

are not sure how the step is done.