Apple Macintosh Server G4 Manuel D’Utilisation

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 Troubleshooting
Symptom Charts/ Error Tones -  4 6
Computer beeps twice 
at startup
Two beeps means that incompatible RAM types may be installed. 
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 
times at startup
Three beeps means that no RAM banks passed memory testing.
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.