Overview
2-20
Service Periodic Maintenance
Contents
Schematics Illustrated PartsInstallation
The following illustration shows a rear view of the two Workstation monitors. Both monitors are electrically identical;
each is powered by 120 VAC from TB4, and each receives its video drive signal from the Display Controller PCB. The
System Interface PCB supplies control signals from the Host CPU to the monitors. These RS-232 signals control
image contrast and brightness, and setup parameters such as vertical size and raster centering.
Mechanically, the Primary and Secondary displays are approximate mirror images of each other. The larger cage on
each monitor holds the CRT, deflection electronics, and video circuits. The smaller cage holds the switch mode power
supply.
Switch Mode
Power Supplies
RS-232
Control
Signals
Deflection
Electronics
And CRTS
120 VAC Inputs
Video Inputs
TB4 AC Input
High Resolution Displays - Rear View
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