Troubleshooting

 

Symptom Charts/ Error Tones - 46

 

 

 

 

 

 

 

 

Computer beeps twice

Two beeps means that incompatible RAM types may be installed.

at startup

Verify that only SDRAM DIMMs are installed. Use PC-100 DIMMs

 

 

 

on Power Mac G4 (PCI/AGP/Gigabit Ethernet) and PC-133

 

 

 

DIMMs on Power Mac G4 (Digital Audio/QuickSilvers).

 

 

 

1

Run Apple Hardware Test. If the test finds bad memory,

 

 

 

 

replace the DIMMs one at a time and test until all bad DIMMs

 

 

 

 

are replaced with known-good modules.

 

 

 

2

Reseat the processor module.

 

 

 

3

Replace the processor module.

 

 

 

4

Replace the logic board.

Computer beeps three

Three beeps means that no RAM banks passed memory testing.

times at startup

1

Run Apple Hardware Test. If the test finds bad memory,

 

 

 

 

replace the DIMMs one at a time and test until all bad DIMMs

 

 

 

 

are replaced with known-good modules.

 

 

 

2

Reseat the processor module.

 

 

 

3

Replace the processor module.

 

 

 

4

Replace the logic board.

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Apple G4 manual