Справочник Пользователя для Apple LATE 2009

Mac mini (Late 2009) Symptom Charts — Startup and Power 

 2009-11-03

No startup chime

• 

Error tones during startup.

• 

Grey screen with fan noise, or 

• 

other noise.
Will not progress beyond  

• 

Apple logo or spinning gear.

Isolate OS by starting up from original install 

media for the computer, the same make and 

model computer in Target Disk Mode, or 

compatible known-good OS on an external drive. 

Both AirPort and Bluetooth services are available 

when booted from the Install disk.
Reset SMC and PRAM to clear any stored, 

corrupted information.
Start up in Safe Mode by holding the shift key 

down during startup to load only required kernel 

extensions and disable all startup and login 

items. See KBase article  

If system generates error tones there may be an 

issue with the SDRAM. See KBase article  

Identifying when in the startup process the 

computer hangs can help isolate the issue.  

See KBase article  

 

for information on the Macintosh startup 

sequence, error codes and symbols used.

Boot the computer to Apple 

Hardware Test on the Install 

DVD. Does the computer boot 

up to this volume?

Yes

Run the extended tests 

and proceed with results. If 

AHT passes or boots with a 

memory error, go to step 2.

No

Go to step 2.

Remove the installed SDRAM, 

and test with known-good 

SDRAM. Does the computer 

startup properly now?

Yes

SDRAM issue. Replace SDRAM. 

Issue resolved.

No

Go to step 3.