Apple IIe Card - Manual (Page 156)

My keyboard doesn’t work properly
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Make sure the keyboard and mouse are correctly connected to the
Apple Desktop Bus port on the back panel of the Macintosh LC.
(See the instructions that came with your computer.) Make sure the
computer is turned off before you connect or disconnect any cables.
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If you changed the keyboard and mouse configuration after starting
the computer, turn off the computer and then restart it.
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Change the Type Ahead setting to Off in the General Controls panel.
(Some programs are not compatible with the Type Ahead feature.)
I can’t hear the beep
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Turn up the volume using the Macintosh Sound control panel.
I can’t control the volume of sounds my Apple IIe program makes
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You can control only the sound of the Apple IIe beep. There’s no way
to control the volume of other sounds.
My Apple IIe program runs too slowly
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Change the Speed setting to Fast in the General Controls panel.
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Change the Display setting to Monochrome in the General
Controls panel.
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Change the Key Repeat Rate in the General Controls panel to
a faster setting.
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Change the Type Ahead setting to On in the General Controls panel.
Appendix A: Troubleshooting 140