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Chapter 1. Indicators, Switches and Controls
The IBM 3205 has visual indicators, operator messages, audible indicators, as well as various switches and
controls. This section describes the indicators, switches, and controls.
1.1 Indicators
The visual indicators are the power-on light and the status light. The power-on light. which is on the video
unit, goes on when power is applied. The status light is on the logic unit and indicates machine status,
depending on the setting of the Test/Normal switch. When the switch is set to the Test position, the status
light blinks after diagnostics verify the operation of the IBM 3205 hardware. When the switch is set to
Normal. the status light is on when the IBM 3205 receives data or commands from the host processor.
The bottom line on the video screen is used to indicate machine status and error conditions. These messages
are described more thoroughly in "Operator Messages."
Another indicator is the audible alarm which is used to attract the operator's attention and to generate the
keyboard click sound. The audible alarm is adjustable.
1.2 Switches
•
The Power On/Off (I 0) switch on the video unit controls power to the display console.
•
The Test/Normal switch on the logic unit sets the IBM 3205 to offline test mode or to normal mode of
operation.
•
The Monocase/Dualcase (A/A,a) switch is on the logic unit. When the switch is set to monocase (A). all
characters are displayed in uppercase. When set to dualcase (Aa), the characters are displayed in
uppercase and lowercase.
•
The security keylock on the logic unit is a key-controlled lock for the IBM 3205. When the key is in the
off position, the screen is blank (except for the cursor and operator information area) and data cannot be
entered, modified, or displayed. The key can be removed when the key lock is in either position.
•
A color switch
(00/0000)
selects the number of colors that can be used on the screen.
•
The setup switches are located on the under side of the keyboard. These switches, set by the CE at
installation, identify the keyboard language. The switch setting for your keyboard is marked in the label
adjacent to the switches.
1.3 Controls
•
The brightness control on the video unit allows you to adjust the intensity of the display image.
•
The audible alarm volume control knob at the rear of the logic unit allows you to adjust the sound level of
the alarm and click.
1 -1
Chapter 1. Indicators, Switches and Controls
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