Apple IIgs - Manual (Page 57)

Page 57 of 84 II gs
Printed: Thursday, July 25, 2002 12:14:50 PM
Trouble With the Display
The image on the screen is rolling or out of alignment.
The Apple IIgs is sending signals to the monitor according to the foreign standard (50 hertz)
instead of the U.S. standard (60 hertz).
Press Option-Control-Reset and then press 2. This restores the standard Control Panel settings
for the U.S., including the standard frequency of 60 hertz.
Text is fuzzy and unreadable. (You've already checked to make sure the monitor
cable is plugged securely into the computer.)
You're using a television set or a color monitor as a display device, and the application is
displaying text in 80-column format. Television sets and some color monitors don't have sharp
enough resolution to display the smaller character size. If that's not the problem, maybe the
contrast is too bright or too dim.
If the application gives you a choice between a 40-column and an 80-column
display, choose 40. If the application doesn't give you a choice, use the Control Panel Program
to change the Columns option to 40. If that isn't the
problem, try adjusting the contrast knob on your monitor.
Text and background colors are so similar that the text is unreadable.
There isn't enough contrast between text and background.
Try adjusting the contrast and brightness on your monitor. If that doesn't improve the
contrast, you can restore the original Control Panel settings for text and background by
pressing Option-Control-Reset and then pressing 2. If there still isn't enough contrast, try
setting the display type in the Control
Panel Program to Color even if you're using a monochrome monitor.
Little apples and check marks appear in a line of uppercase, inverse text.
The apples and check marks are called MouseText. MouseText characters replaced a redundant set
of characters in earlier models of the Apple II. Older applications using that redundant
character set will now display MouseText characters in place of uppercase, inverse text.
The MouseText characters don't affect the way an application works, so if they don't bother
you, go ahead and use the application. If they do bother you, ask your authorized Apple dealer
or the developer of the application if there is an
upgraded version of the application.
There isn't enough contrast between colors on the display.
The application was designed for earlier models of the Apple II. The
Apple IIgs generates slightly different colors.
Try a different setting for display type in the Conrol Panel Program. The display type doesn't
have to match the kind of monitor you have.