Apple lc 580.performa 580cd Service Manual

 

 Troubleshooting

Symptom Charts/CD-ROM Drive

 

 (Continued)

 

 - 17

 

A Macintosh LC 580 

starts up from a 

backup CD-ROM disc, 

but won’t eject the 

disc and gives a -50 

error. Or the 

computer starts up 

from backup CD-

ROM, but won’t mount 

discs after restart.

Early Macintosh LC 580 computers shipped with AppleCD 300i 

plus CD-ROM drives. Later LC 580 computers shipped with 

AppleCD 600i CD-ROM drives. Using a backup CD-ROM intended 

for the AppleCD 300i in an AppleCD 600i (or vice versa) will 

cause these symptoms.

• Identify the backup CD-ROM discs by their part numbers. 

Backup discs for AppleCD 300i have the part numbers 

691-0462-B or 691-3305-A. Backup discs for AppleCD 

600i have the part number 691-0793-A.

• Identify the CD-ROM drive installed in the Macintosh LC 

580. Remove any CD-ROM disc present in the drive. Open 

the PC Exchange control panel and click Options. You will 

see the product code CR-8004x if the drive is a 300i or 

the code CR-8005x if the drive is a 600i.

• Use only 300i backup CD-ROM discs in 300i drives, and 

only 600i backup discs in 600i drives.