iMac (27-inch, Mid 2010) Symptom Charts — Input/Output Devices 109
2010-09-09
Deep Dive
Check Result Action Code
1. Verify if computer recognizes
keyboard or mouse when
plugged into rear USB ports on
back of iMac.
Yes Test device in all USB ports to
ensure all other USB ports are
working as expected.
Replace logic board if any
USB port on rear fails.
Replace keyboard if any USB
port on keyboard fails.
Go to step 2.
M15
K11
No Go to USB Device Not
Recognized symptom ow.
2. Verify if keyboard is working as
expected.
Yes Go to step 3.
No Go to Wired Keyboard Does
Not Function Properly
symptom ow.
3. Verify if Mighty Mouse has an
issue with scroll ball.
Yes See kBase #HT1537: How to
clean your Mighty Mouse.
No Go to step 4.
4. Verify if mouse has an issue
with buttons.
Yes Go to step 7.
No Go to step 5.
5. Verify if mouse has an issue
with tracking.
Yes Go to step 6.
No Go to step 7.
6. Try using mouse on another
surface. Non-reective, opaque
surfaces without repetitive
patterns work best. The surface
should be clean but not shiny.
Verify if mouse tracks correctly
when used on another surface.
Yes Surface issue. Issue resolved.
No Go to step 7
7. See kBase #HT1581:
Troubleshooting Mighty
Mouse and determining
expected behavior. Verify if
this article resolves issue.
Yes Issue resolved.
No Replace wired Mighty Mouse. K99