Apple macintosh iivx.vi.perf 600 Servicehandbuch

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 Troubleshooting
Symptom Charts/Peripherals - 8
 
Peripherals
 
Works with internal 
or external SCSI 
device, but does not 
work with both
1 Verify that SCSI select switch on any external device is set 
differently from any internal SCSI device.
2 Verify that hard drive is terminated but optional CD-ROM is 
not terminated.                                                                  
3 Replace terminator on external SCSI device. 
4 Replace SCSI select cable on external SCSI device. 
Cursor does not move
1 Reboot computer.
2 Verify that mouse is connected properly.
3 If mouse was connected to keyboard, connect mouse to 
computer ADB port instead. If mouse works, replace 
keyboard.
4 If mouse does not work in any ADB port on computer, replace 
mouse.
5 Replace logic board. Retain customer’s SIMMs.