Solving A Problem - IBM 3164 ASCII Manual

Chapter 1. Introduction
Solving a problem
1-8
If you encounter a problem while operating the display station, the "Problem
Determination" section in your IBM 3164 ASCII Color Display
Station-Operator Reference and Problem Solving Guide, will help you solve it.
If any element has a technical problem, this guide will help you isolate it.
Then you can either replace the element with a spare, or return it to IBM for
repair or exchange.
This guide is shipped with the display station and should be stored in the
drawer located under the logic element.