The Power Mac G4 computer beeps three times at startup. Three beeps means that no RAM banks passed memory testing.

This article covers repair procedures for authorized service providers on selected Apple products, but we have published them in the Knowledge Base for the general public for educational purposes. At this time, there are a limited number of repairs that a customer can perform and these are covered under the customer installable parts program http://www.info.apple.com/installparts . If you have not been authorized to perform these procedures, please contact Apple (800-APL-CARE in the USA) or your local authorized service provider to schedule a repair.

Symptom

The Power Mac G4 computer beeps three times at startup.

Products affected

• Power Mac G4
• Macintosh Server G4
• Macintosh Server G4 with Mac OS X Server

1. Replace the existing SDRAM one DIMM at a time with known-good PC-100 SDRAM DIMMs.

2. Reseat processor module and try again.

3. Replace processor module and try again.

4. Replace logic board.