Genius 1993, ISO XFR-75W, 2093, 1493, 2793, 3693, 1793, ISO XFR-100W Monitor Simplified Block Diagram

Monitor Simplified Block Diagram.

VIDEO	VIDEO	VIDEO
Output	Interface	Amps.
Drive
Electronics	Blanking	AUTO BIAS
SYNC
Output		Vertical Deflection
		Horizontal Deflection
	Remote	Horizontal Size
	Controls	Control
Isolated		POWER SUPPLY
Power

CRT

FBT

IB

Fault &

High Temp.

Detection

This block diagram gives a broad view of the circuit organization of the 1493, 1793, 1993, 2093, 2793, and 3693 monitors. The blocks with the bold outline represent circuits which provide these monitors with a wide range of operating conditions without the need for adjustment.

The video interface circuit can be programmed to accept; +Analog AC or DC coupled, -Analog, and 4 line TTL. The M. GAIN or contrast control is located on the remote control board.

The auto bias circuit eliminates the need for the color setup procedure. This circuit is designed to actively compensate for picture tube drift which normally causes unbalanced color. The auto bias circuit also adjusts the CRT gain to compensate for gain loss with age.

The horizontal size control circuit permits the horizontal size to be adjusted from a remote control board. This circuit is also used to compensate for pincushion distortion and blooming. Anti-blooming is accomplished by correcting horizontal size variations which are caused by the additional load on the flyback transformer under high beam current conditions.

Careful reading of all the information presented in this manual is a good way to learn how to repair the CERONIX monitor.

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