Troubleshooting

Symptom Charts/Error Chords - 4

Error Chords

One-part error chord sounds during startup sequence

1Disconnect SCSI data cable from hard drive and reboot system. If startup sequence is normal, initialize hard drive. If error chord still sounds, replace hard drive.

2Disconnect floppy drive cable from floppy drive and reboot system. If startup sequence is normal, replace floppy drive.

3Reseat ROM, RAM, and cache SIMMs, and reseat terminator card.

4Replace logic board. Retain customer’s SIMMs.

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Apple 9150 manual Error Chords
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