Canon CXDI-31, Service Manual

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2 Installation Manual
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4.3.13. Operation Unit Gamma Correction
(1) Purpose
This procedure is performed so that the image that is printed out or displayed on a high-
definition monitor conforms exactly to the exposure image on the operation unit.
(2) Notes
1) The procedure in “Linearity Check of Transfer Image Density” must be completed.
2) If image adjustment for the printer or high-definition monitor has not been made, adjust
the gamma correction for the high- definition monitor image to the same setting as the
printer image.
3) Gamma correction is an image correction process for monitors and film. It is different
from the contrast setting or grayscale setting.
This procedure is simply a visual adjustment. As a result, differences may occur
depending on the operator performing the procedure. Therefore, be sure to consult with
the responsible technician before performing this adjustment.
(3) Compare the image on the operation unit with the image shown on the printed sheet and
monitor.
1) Start up the CXDI system.
2) Use the two adjustment knobs at the rear of the operation unit to adjust the brightness and
contrast of the touch panel screen for optimum visibility.