Chapter 1. Introduction 1·1; General - IBM 3278 Series Maintenance Information

Chapter 1. Introduction
1.1 General
The IBM 3278 Display Station must be attached to a
port of the IBM 3274 Control Unit or of the IBM
3276 Control Unit Display Station (or other compat-
ible controllers) by a coaxial cable. The 3278 con-
tains field replaceable units (FRUsl. as shown in
Figures ,-, and '-2.
Coax
Timing and
Control
Base 3 E2
_ _ ....:C~a=-bl~e _ _ ~ Input/Output
Serdes
Storage/
Storage Co ntro I
MSR Card
Magnetic
Base 1 G2
Feature
Logic
Base 1 G2
Selector
Pen Card
Selector
Pen
Slot Reard_e _r
---1_---.
RA PS ECS Card
RAMC2
D2
Base 2 F2
Character
Generator
and Video
Output
Base 3 E-2
Analog
H2
APL/Text
ROS Module
(Pluggable Module)
Figure 1-1. 3278 Field Replaceable Units, (0) Type
SY27-2510-6
(1/81)
1-1