Apple MD094LL/A Manuale Utente

iMac (27-inch, Mid 2010) Symptom Charts — Input/Output Devices 

 2010-09-09

4.  Verify if FireWire device is 

recognized with a known-

good FireWire cable on user’s 

computer.

Yes

FireWire cable issue. Issue 

resolved.

No

FireWire device may need 

additional power. Go to step 5.

5.  Using a powered FireWire 

hub, and having installed any 

software or firmware updates 

for the device, verify if FireWire 

device is now recognized.

Yes

Device recognized. Required 

additional power from hub or 

update. Issue resolved.

No

Device may require additional 

software, or there may be a 

conflict in the Mac OS. Go to 

step 6.

6.  Create a new user in System 

Preferences > Accounts and 

log out current user. Log in 

on new user account and 

verify if FireWire device is now 

recognized.

Yes

Software Issue. Troubleshoot 

software on User account. Issue 

resolved.

No

Apply all Mac OS and FireWire 

specific updates. If issue 

persists, contact device 

manufacturer for support. 

FireWire port and cable have 

been verified.