Apple 4400, 7300 manual Configuration problems, Sound problems, Can’t hear PC sounds

Configuration problems

I can’t assign a COM port to a Macintosh serial port.

COM ports cannot be assigned to Macintosh serial ports that are in use by an application or network software.

If you assign a COM port to a Macintosh serial port, the serial port cannot be used by the Mac OS until you unassign the COM port.

When I try to use my Mac OS communications software, I get an error that says the selected port is in use.

Your Mac OS communications software may be trying to use a port that is assigned to the PC Compatibility Card. Open the PC Setup control panel and unassign the selected port by setting it to None.

Sound problems

I can’t hear PC sounds.

PC sound may be turned off in the PC Setup control panel.

If you can’t hear sound from a CD, make sure that the internal audio cables are installed according to the instructions in the chapter on installing the PC Compatibility Card in your computer model.

The PC Compatibility Card can play sound only from the CD-ROM drive with the lowest SCSI ID number. If you’re using another CD-ROM drive, you won’t hear sound when you switch to the PC environment.

If you are using DOS or Windows, increase the speaker volume with the

Sound Blaster Mixerset application. To run the Mixerset application from

DOS, change to the VIBRA16 directory, type mixerset, and press Return.

Troubleshooting 87