Apple 5400/200 用户手册

 

 Troubleshooting

Symptom Charts/Miscellaneous - 27

 

“Sad Macintosh” icon

1 Verify that no disc is in CD-ROM drive.

2 Disconnect all external SCSI devices and attempt to restart 

computer.

3 Disconnect internal SCSI device and attempt to start computer 

with known-good floppy disk.

4 Replace bad SCSI drive with known-good SCSI drive.

5 Replace DRAM DIMMs on logic board.

6 Replace logic board. Retain customer’s DIMMs.

No sound from 

known-good external 

speakers

1 Check that volume is turned on (manually or through Control 

Panel). 

2 Verify that headphones are unplugged. 

3 Verify that speaker connectors are properly connected. 

4 Replace logic board. Retain customer’s DIMMs.