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Theory of Operation
AWG2005 Service Manual
3Ć3
Display Monitor
The display monitor takes in the video signals and displays them on a
17.8Ăcm (7 in.) CRT screen. The display resolution is 480 640 pixels.
Front Panel (A12 Key Board)
The front panel block includes the buttons, keys, knobs, and so on, for
entering selections. User selections from the front panel are sent to the
processor. The buttons at the bottom and side of the display are also inĆ
cluded in this block. Commands from the processor control the LED in the
buttons.
Floppy Disk Drive
The 3.5Ćinch floppy disk drive supports both 2DD and 2HD MSĆDOS forĆ
mats.
Low Voltage Power Supply
This functional block is a switchingĆtype power supply that converts the line
voltage into the various voltages required for internal circuit operation.
Fan
The fan prevents heat buildĆup inside the cabinet; it pulls air into the right
(floppyĆdisk) side of the AWG2005 and exhausts it out the left side.