Monitor boards

AD

(Profiles, May 1988)

Terms used

These are from a January 1988 edition of Profiles Magazine.

• Focus refers to the crispness of the entire image on screen--how clear the characters are and how sharp the center of the image is compared to the edges
• Brightness refers to how intensely the image on the CRT glows.
• Horizontal and Vertical Hold Adjustments -- Adjusting the horizontal hold scrolls the entire image from left to right, or vice versa. Vertical hold scrolls the picture up and down.
• Horizontal Width is the measure of the screen image, which should be seven inches.
• Vertical Size refers to the vertical measure, or height of the image. This is normally 4.8 inches.
• Vertical Linearity refers to the height of all characters. relative to each other. When vertical linearity is out of adjustment, for example, the characters at the to and bottom of the screen may appear larger than those in the center.

Elston

Elston Green Board

Found in
#79763 Triangluar Board
#288536

	Toshiba CRT attached to Elston
	Clinton CRT attached to Elston
Note the Triangular board in early models.

Elston White Board

As far as I can tell the white board is the same as the previous board.

Found in
#292222

	Example

Dotronix

Dotronix Board	Found in

Toshiba

Toshiba Board	Found in
	This version of the Toshiba Board is not shown in the Technical Manual (I only have versions C-F to reference.)
	The second version of the board is wider, the components layout is different, and the adjustments are slightly different. This version's adjustments match the technical manual.

Micrex

This Micrex CRT and it's matching board are installed in #261822. The dates on the CRT are Dec 5&6 of 1984.

Micrex

B&H?

This is an undocumented board from an early chassis machine (Early chassis, late serial number)

Clipped Corner Board?

A board given to me by CS. No CRT with it and no noticable label. It does not match any boards in the Tech Manual.