Screen Adjustment Guidelines
Contents
1. convergence controls varies from monitor to monitor In most cases there is a portion of the range that has no affect If the horizontal controls seem stuck move the controls in one direction a large extent and if no effect is seen move them in the other direction a large extent until a change is detected Moving back and forth in small increments will have no effect until the controls are moved into the active range 3 Click OK to save your convergence changes and close the Convergence Control window Convergence Control Adjust the alignment of the red and blue grid lines by moving the handles Check the results using this text and the picture in this window Mowe this window to see the results on different areas of the sereen Arrow Buttons at Center of Screen Apple Studio Display 17 ADC Screen Adjustment Guidelines 15 Degauss If your screen display shows faint blotches of color on a single color screen such as a red green or blue screen clicking Degauss can correct the problem When you click Degauss the monitor emits an audible beep and degausses itself The screen darkens for a few seconds and then it returns to the previous though improved screen display However if the problem persists refer to Mac Help Co Parallelogram li Bow Apple Studio Display 17 ADC Screen Adjustment Guidelines 16 Color Button Click the Color button in the Monitors control panel to access color sett2. rectangle clockwise or counterclockwise to rotate the image Note Instead of dragging the screen rectangle you can rotate the image by clicking the arrow buttons for incremental movement Settings Height Width Position Pincushion Rotate Keystone Parallelogram gt Bow Apple Studio Display 17 ADC Screen Adjustment Guidelines 10 Keystone Keystone distortion also Known as trapezoid appears as if the screen image length at the top edge is noticeably shorter or longer that the length at the bottom edge 1 Select Keystone 2 Move the mouse pointer over the picture of the display 3 Drag the screen rectangle left or right to adjust the image Note Instead of dragging the screen rectangle you can adjust the image by clicking the arrow buttons for incremental movement Settings _ cd Height Width 3 Position C Pincushion 2d Rotate Keystone d Parallelogram d Bow Apple Studio Display 17 ADC Screen Adjustment Guidelines 11 Parallelogram Parallelogram distortion appears as if the screen image is leaning to one side 1 Select Parallelogram 2 Move the mouse pointer over the picture of the display 3 Drag the screen rectangle left or right to adjust the image Note Instead of dragging the screen rectangle you can adjust the image by clicking the arrow buttons for incremental movement _ Settings co Height Width c2 Position 2 Pincushion 2 Rotate Keys
3. require more help contact Apple for technical support at http www apple com support products overview html Apple Studio Display 17 ADC Screen Adjustment Guidelines 18 Apple Computer Inc 2000 Apple Computer Inc All rights reserved Under the copyright laws this document may not be copied in whole or in part without the written consent of Apple The Apple logo is a trademark of Apple Computer Inc registered in the U S and other countries Use of the keyboard Apple logo Option Shift K for commercial purposes without the prior written consent of Apple may constitute trademark infringement and unfair competition in violation of federal and state laws Every effort has been made to ensure that the information in this document is accurate Apple is not responsible for printing or clerical errors Apple Computer Inc 1 Infinite Loop Cupertino CA 95014 2084 408 996 1010 http www apple com Apple and the Apple logo are trademarks of Apple Computer Inc registered in the U S and other countries Apple Studio Display 17 ADC Screen Adjustment Guidelines 19
4. 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 a
5. he Factory Settings button in the lower right corner of the Geometry window resets only the geometry controls and convergence The screen image returns to the factory preset levels of geometry and convergence for the current screen resolution Adjustments you have made in the Monitor Color or Preferences windows are not reset when you click Factory Settings 6 Apple Studio Display 17 ADC Screen Adjustment Guidelines Height Width Normal height and width on an Apple CRT display leaves a black border of approximately one half inch 13 mm around the screen image If the display image appears too short or too narrow compressed vertically or horizontally you can use the Height Width controls to adjust the display 1 Select Height Width 2 Move the mouse pointer over the outer edge of the screen rectangle in the picture of the display 3 Drag the left or right side of the screen rectangle to change the width 4 Drag the top or bottom edge of the screen rectangle to change the height Note Instead of dragging the screen rectangle you can adjust height and width by clicking the arrow buttons for incremental movement Settings Height Width c2 Position E gt Pincushion 3 Rotate 2 Keystone Parallelogram d Bow Apple Studio Display 17 ADC Screen Adjustment Guidelines 7 Position The Position selection refers to the centering of the screen image If the image appears shifted up do
6. ings Important Before changing any of the settings refer to instructions in Mac Help or your computer user manual for specific color adjustments Apple Studio Display E Monitor Geometry Color Preferences Apple DigitalColor Technologies Saved Settings White Point 9300 8MPCD Factory Defaults Gamma Curve EEIE Monitor last calibrated 1 4 04 Colorsync Profile Apple Multiple Scan 20 9300 Apple Multiple Scan 20 bao Apple Multiple Scan 20 DES Ambient Light None Colorsyne Display 9200 Generic Gray Profile Color SW Automatic g Apple Studio Display 17 ADC Screen Adjustment Guidelines 17 Preferences Button When you click the Preferences button the Theater Mode setting is displayed Theater Mode is either on set at Auto or off When you show a movie full screen Theater Mode enhances the brightness and contrast of video content that is presented at full screen size With Theater Mode turned on your monitor automatically brightens when you use full screen mode When you stop using the application s full screen mode the screen returns to its normal brightness and contrast levels Apple Studio Display 4 koe Monitor Geometri Color Preferences _ Theater Mode _ j Auto _ Off For more information Refer to your computer user manual or Mac Help for more information about adjusting your display If you experience a problem with your display and
7. king 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 Monitor Geometry 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 e Color Depth e Resolution e Contrast Under Color Depth the setting Millions of colors is the default setting This gives your display the widest range of color options If you ever want a narrower range of colors required by some applications you can temporarily set the Color Depth to Thousands And if you want your display screen to sh
8. ow colors as shades of gray only select 256 and then select Grays All of these settings can be changed in the Monitors control panel at any time Apple Studio Display a Monitor Geometry Color Preferences Color Depth Resolution Grays Show Colors Contrast _ 0O 9 Under Resolution you can select another screen resolution The number of screen resolutions available depend on the amount of video memory VRAM in your computer and the capabilities of your display To adjust the contrast drag the Contrast slider control left or right to decrease or increase the screen contrast Apple Studio Display 17 ADC Screen Adjustment Guidelines 5 Geometry Button When you click Geometry the Monitors control panel looks like this a SS I Apple Studia Display Soo B rP OE 2 Monitor Geometry Color Preferences Convergence Settings Height Width Position C Pincushion Rotate d Keystone Q Parallelogram gt Bow From this window you can change settings to adjust the shape of the viewable screen area Important Do not change geometry settings unless your display s screen shape is distorted and you have already tried e restarting your system e allowing the display to warm up for 30 minutes to see if the screen distortion goes away on its own e unplugging and moving away any electrical motor devices such as fans away from your monitor Factory Settings Important Clicking t
9. reas 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 Ma
10. tone Parallelogram Bow Apple Studio Display 17 ADC Screen Adjustment Guidelines 12 Bow Bow is present if the screen image appears bowed to the left or right side If both sides are bowed in or both sides are bowed out refer to the Pincushion section 1 Select Bow 2 Move the mouse pointer over the picture of the display 3 Drag the screen rectangle left or right to adjust the image Note Instead of dragging the screen rectangle you can adjust the image by clicking the arrow buttons for incremental movement _ Settings co Height Width 2 Position C Pincushion 2 Rotate 2 Keystone cd Parallelogram pa Bow Apple Studio Display 17 ADC Screen Adjustment Guidelines 13 Convergence Color images may appear blurry and out of focus if Convergence needs adjustment The convergence adjustment is used to align the red green and blue electron guns for a sharper screen image 1 If you want to adjust the color convergence click Convergence Geometry Color Preferences Convergence The Convergence Control window appears see next page Note When you adjust convergence refer to the center of the screen on the grid outside the Convergence Control window Apple Studio Display 17 ADC Screen Adjustment Guidelines 14 2 Click the arrow buttons to adjust convergence Adjust convergence for the overall best screen color clarity Note The active range for the horizontal
11. wn or right left only adjust it using the Position controls Keep in mind that if you then move the monitor to another location you may need to readjust the controls 1 Select Position 2 Move the mouse pointer over the picture of the display 3 Drag the screen rectangle to center the image Note Instead of dragging the screen rectangle you can also adjust the image position by clicking the arrow buttons for incremental movement Settings C Height Width Position 2 Pincushion 2 Rotate 2 Keystone 2 Parallelogramm Bow Apple Studio Display 17 ADC Screen Adjustment Guidelines 8 Pincushion Pincushion is present if the screen image appears bowed in or bowed out on both sides If just one side is affected refer to the Bow section 1 Select Pincushion 2 Move the mouse pointer over the picture of the display 3 Drag the left or right side of the screen rectangle to adjust the image Note Instead of dragging the screen rectangle you can adjust the shape of the image by clicking the arrow buttons for incremental movement Settings Height Width 2 Position Pincushion 2d Rotate 2 Keystone Parallelogram d Bow Apple Studio Display 17 ADC Screen Adjustment Guidelines 9 Rotate If the entire screen image appears off balance use the Rotate controls to correct it 1 Select Rotate 2 Move the mouse pointer over the picture of the display 3 Drag the screen
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