Apple 145B Laptop User Manual


 
Troubleshooting Symptom Charts/Startup - 2
Symptom Charts
Startup
RAM failure occurs
(eight-tone error
chord sequence sounds
after startup chord)
1 Replace RAM expansion card.
2 Replace daughterboard.
3 Replace motherboard.
Hardware failure
occurs (four-tone
error chord sequence
sounds after startup
chord)
1 Disconnect hard drive data cable and reboot system. If startup
sequence is normal, replace hard drive.
2 Disconnect floppy drive cable and reboot system. If startup
sequence is normal, replace floppy drive.
3 Replace motherboard.