IBM 3278 Series

Coax
Cable
MSR Card
B4
Magnetic
Line
Control
Base 1 G2
Selector
Pen Card
G4
Selector
Pen
Slot Reader
r---'-----,
RAM PS ECS Card
RAM D2 E2
Timing
Base 1
G2
Storage Control
Feature Logic
Character
Generator
Base 2 F2
Video
Output
H2
APL!Text
ROS Module
(Pluggable
Module)
Figure
1-2_ 3278 Field Replaceable Units, (M) Type
1-2
SY27-2510-6