Vertical Size Adjustment - IBM 5155 Manual To Operations

Vertical Size Adjustment
This adjustment is required only if the character size on
your mM Color Display is incorrect.
Vertical Size
Control
1
Set the Power switch on the system unit to Off.
(If the expansion unit is attached, also set its
Power switch to Off.)
2
Set the display's Power control to On.
3
Turn the Brightness and Contrast controls fully
clockwise.
4
Turn the Vertical Size control fully
counterclockwise. A black area appears across
the top and bottom of the screen.
Color
Display
3-35