Rockwell Automation 6156 Industrial 14 inch CRT Monitors - Manual (Page 19)

Industrial 14” CRT Monitors 19
Publication 6156-2.0
Note: This effect is different from the effect of magnetism on the
shadow mask, which takes the form of color impurity and is
corrected by the degaussing system described previously.
Before making any adjustment, display a full screen image and check
for rotation (top or bottom edge of the image out of parallel with the
corresponding edge of the panel).
If adjustment is necessary,
1. Loosen the lock nut on the control shaft.
2. While observing the display (in a mirror if necessary) use a flat
blade screwdriver to adjust the alignment.
Note: Don’t forget to re-tighten the lock nut after the adjustment is
made.
Important: The raster rotation control cannot correct for the effects
of external AC fields such as those produced by large motors,
generators and transformers. Such effects often take the form of
display jitter. Protection against this kind of magnetic interference
requires special shielding.
!
ATTENTION: Do not attempt to change any
adjustments located on the monitor chassis’ left side
(as viewed from the front of the monitor). These
adjustments are for factory trained personnel using
special test and alignment equipment and should not be
required to obtain a good display in the field.
Preparation for Shipment
If it is ever necessary to ship the monitor, first remove it from the
panel in which it has been installed, then securely pack it. To remove
the monitor from the panel, reverse the installation procedure that
begins on page 6. Whenever possible, ship the monitor in its
original container.
!
ATTENTION: Never try to ship the monitor while it
is mounted in a panel. Doing so could result in damage
to the panel or monitor.
Maintenance