Service Manuals, User Guides, Schematic Diagrams or docs for : apple Displays Studio Display 17 (ADC) Adjustment Guide sd17adc_adj_guide

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                      Apple Studio Display 17 (ADC)




Screen Adjustment Guidelines
This document describes how to evaluate your screen display and make
display adjustments, if necessary.


What Should a Normal Screen Display Look Like?

Shape
For a monitor that contains a CRT (cathode-ray tube), the normal screen
display should have a uniform shape. That is, the rectangular screen image
should have about one-half inch (13 mm) of black border around all four
sides.




   Normal Shape                Not Normal               Not Normal
                        Two Horizontal Lines
                        Most CRT-based Apple monitors contain a "tron" style tube. This display
                        contains a Mitsubishi Diamondtron tube, which uses an aperture grill.
                        Electron beams pass through the aperture grill to display the screen image.
                        Two stabilizing wires, which are thinner than a human hair, can be noticed
                        on a light-colored background screen as light gray horizontal lines across
                        the entire width of the display image. The stabilizing wires decrease the
                        vibration of the aperture grill that can occur when the display is bumped.
                        Without the stabilizing wires, the aperture grill's vertical wires could vibrate
                        much like a guitar string--causing display quality problems for several
                        minutes.

                        These horizontal stabilizing wires are normal and cannot be adjusted out.




                                                                                          Stabilizing
                                                                                          Wires




                        Colors
                        When you select a single-color screen, you should see no distinct color
                        blotches or areas that are dimmer than the rest of the screen. If you do,
                        check if the same areas of the screen are dim when you select other single-
                        color images.

                        Refer to the Degauss section in this document or Mac Help for more
                        information.




2 - Apple Studio Display 17 (ADC) Screen Adjustment Guidelines
What About Magnetic or Electrical Interference?
Before assuming that your display requires adjustment or repair, check for
magnetic or electrical interference.

Fluorescent lights, computers, other monitors, or electronic appliances
such as coffee makers and copy machines can cause screen distortion.
Move the monitor to another room or building to determine if external
interference is the source of the problem.

If the full-screen image has shifted up/down or right/left only, adjust it using
the geometry controls in the Monitors control panel. Keep in mind that if you
then move the monitor to another location you may need to readjust the
controls. If the display changes (for better or worse) when you move it to
another location, the environment is the source of the problem. Move the
monitor or the distortion-causing object.

CRT tolerances allow for some distortion. Additional distortion can be
caused by magnetized metal objects (desks, file cabinets). Rotate the
monitor or move it to a different location if you notice bowing of the screen
shape or bent edges. You can also use the Monitors control panel to make
geometry adjustments to optimize the screen display.




          Apple Studio Display 17 (ADC) Screen Adjustment Guidelines - 3
                        Making Screen Adjustments With the Monitors Control
                        Panel
                        The Monitors control panel is used to make adjustments to the viewable
                        area of your screen display. Because adjustments are made to the screen
                        before the display leaves the factory, you might never have to use the
                        Monitors control panel.

                        You can open the Monitors control panel by pressing the button on the
                        lower left of the display bezel.




                                     Press to open Monitors control panel




                        From the Monitors control panel, you can select four main buttons: Monitor,
                        Geometry, Color, and Preferences. From these buttons, you can select the
                        following settings or adjustments:




                       Color Depth        Height/Width           White Point         Theater Mode
                       Resolution         Position               Gamma Curve
                       Contrast           Pincushion             Ambient Light
                                          Rotate
                                          Keystone               Import/Export
                                          Parallelogram          Preferences
                                          Bow                    Recalibrate

                                          Convergence            ColorSync Profile
                                          Degauss
                                          Factory Settings




4 - Apple Studio Display 17 (ADC) Screen Adjustment Guidelines
Monitor Button
When the Monitors control panel first opens, the Monitor button is selected.
From this window, you can change the following settings:

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