Control Data Corporation INFORMATION SYSTEMS TERMINAL II Hardware Maintenance Manual page 113

• +S-V Adjustment - This potentiometer, in the power
supply, allows for the adjustment of the +S-V output
of the power supply. The voltage should be measured
at the PCB level when this adjustment is being made.
• +S-V Indicator - This red LED indicator, in the
power supply, indicates, when lit, that the +S-V
output of the power supply is energized. A
voltmeter should be used to measure the actual
voltage.
• +SS-V Adjustment - This potentiometer, in the power
supply, permits the adjustment of the +SS-V output
of the power supply. The voltage should be measured
at the monitor PCB when this adjustment is being
made.
• +SS-V Indicator - This red LED indicator, in the
power supply, indicates, when lit, that the SS-V
output is energized. A voltmeter should be used to
measure the actual voltage.
• +12-, -12-, and -S-V Indicators - These three red
LED indicators, in the power supply, show the
condition of the +12-, -12-, and -S-V outputs of the
power supply, lit when energized, off otherwise.
These outputs are not adjustable. They are supplied
by solid state voltage regulators.
VIDEO MONITOR
The display is a noncomposite raster scan display that
utilizes standard TTL/DTL logic level inputs. The display
inputs are horizontal sync, vertical sync, and video infor-
mation. DC power is provided for the display circuits.
The display consists of deflection electronics, high volt-
age, video electronics, cathode-ray tube (crt) and neces-
sary mechanical support components. Adjustments are
provided for size, centering, focus, contrast, brightness,
and linearity. All adjustments except brightness are
factory set, but may be adjusted by maintenance personnel.
The high frequency line scan is from left to right and the
low frequency field scan is from top to bottom (facing the
screen) •
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