Vertical Hold Adjustment; Mm Color Display - IBM 5155 Manual To Operations

Vertical Hold Adjustment
This adjustment is required only if your
mM
Color
Display has a vertical-hold problem (screen is rolling
from top to bottom or from bottom to top.)
Vertical Hold
Control
1
Set the Power switch on the system unit, and the
Power control on the display, to On.
2
Wait for the POST to finish.
3
Tum the Vertical Hold control clockwise as far
as it
will
go, then tum it counterclockwise until
the screen stops rolling and is steady.
3-34 Color Display