GENERAL
Introduction
This publication is designed as a troubleshooting aid in locating malfunctions in 2100 Multipiex systems.
Using the information in this publication, a troubleshooter with a good background in 2100 Multjplex sys-
tems will be able to isolate most faults to a board level.
The publication is divided into two major sections:
0 Outlines
0 Flowcharts
Outlines
The outlines provide details on tests and checks that the flowcharts may ask you to perform. Before you
service a 2100 system, we recommend that you read through these outlines to gain a better understand-
ing of troubleshooting procedures.
Flowcharts
There are five separate flowcharts as shown below:
FLOWCHART
CPU
TRANSPONDER CRT
PRINTER
FLOWCHART FLOWCHART FLOWCHART
FLOWCHART
c
Your troubleshooting procedure should always begin at the Basic Flowchart, which
is
a test chart. If
you can follow the flow to the end of thischart without being directed to another flowchart, your system
is working properly. If there is a malfunction in the system, this chart will direct you to the flowchart nec-
essary to locate the trouble.
When using the flowcharts, always follow the flow exactly as directed without skipping any steps. The
step you skip could be the one most necessary for locating the trouble. It’s equally important that you
be sure to read all information referred to in the reference blocks before performing an action. It wasn’t
possible to list in an action block all steps necessary to perform an action. If references to outlines and
other materials aren’t heeded, it may prevent you from locating the problem.
Note:
The flowcharts utilize universal symbols. However, if you are unfamiliar with their meaning,
refer to the page of symbol definitions immediately preceding the flowcharts.
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