System information

Mac mini (Mid 2011) Symptom Charts — Input/Output Devices 78
2011-07-21
8. Test user’s computer with a
known-good Thunderbolt
cable. Refresh System
Information > Thunderbolt
device tree. Does Thunderbolt
hardware establish a
connection to known-good
iMac listed as “Macintosh” with
Port Status “Connected” and
Link Status “2”?
Yes Go to step 9.
No Replace logic board. M32
9. Connect a known-good
Thunderbolt cable to user’s
computer and known-good
iMac. Start up both computers
to the desktop. Activate TDM
on the known-good iMac
by pressing CMD and F2 keys
momentarily. Does known-
good iMac act as a target
display to extend the desktop
of user’s computer?
Yes Go to step 10.
No Contact TSPS.
10. Connect user’s Thunderbolt
cable to user’s computer
and known-good iMac. Start
up both computers to the
desktop. Activate TDM on the
known-good iMac by pressing
CMD and F2 keys momentarily.
Does known-good iMac act as
a target display to extend the
desktop of user’s computer?
Yes User’s Mac mini computer is
behaving as expected and
can be a host to drive video
to a known-good iMac in
Target Display Mode. Return
computer to user.
No Replace Thunderbolt cable. X26