Справочник Пользователя для Apple MD094LL/A

iMac (27-inch, Mid 2010) Symptom Charts — Mass Storage 

 2010-09-09

5.  Check that the 4 wire SATA 

power cable (carrying 12v and 

5v DC) is correctly connected 

to the Hard Drive (other SATA 

power connector has less wires 

and is reserved for 5v DC only, 

optional SSD drive). Inspect 

internal drive(s) SATA and 

power cables and connectors 

for bent pins, or other damage 

to the cable(s). 

Yes

Replace any damaged SATA 

Bus or SATA Power cable. For 

the internal SATA drive(s), the 

DC power comes from the 

main DC power cable harness. 

Go to step 8.

No

Go to step 6.

6.  Reseat internal drive(s) SATA 

data cable(s) at logic board 

and drive ends, and verify if 

computer boots up successfully.

Yes

Go to step 8.

No

Replace boot drive SATA 

cable. Go to step 8.

7.  Test with a known-good 

bootable drive. Verify if system 

boots successfully and that Disk 

Utility “Verify” function reports 

no errors.

Yes

Reinstall user’s drive. 

Go to step 9.

No

SATA data cable was verified 

or replaced, and known-good 

drive is installed: 

-If hard drive does not spin up 

when system is powered on, 

replace DC power harness; if 

the no spinning issue persists 

after DC cable was replaced, 

replace Power Supply.  

-If hard drive spin up sound 

can be heard when system 

is powered on, but system 

cannot boot from it , replace 

logic board.

8.  Reboot computer. Verify if 

system boots successfully and 

that Disk Utility “Verify” function 

reports no errors.

Yes

Issue resolved. Return system 

to user.

No

Go to step 7.

9.  Reboot computer. Verify if 

system boots successfully and 

that Disk Utility “Verify” function 

reports no errors.

Yes

Issue resolved.

No

User’s hard drive appears to 

be defective. Go to step 10.

10. Replace affected internal drive. 

Boot from system-specific 

Install DVD and reinstall Mac 

OS X with drive format option. 

Verify if drive is formatted 

correctly (GUID partition table) 

and that software restore was 

successful.

Yes

Issue resolved by replacing 

affected internal drive.

No

SATA data cable verified/

replaced and new drive 

installed, Check with known-

good restore DVD. If restore 

failure still happens, go to 

step 11.