Apple MD094LL/A Manual De Usuario
iMac (27-inch, Mid 2010) Symptom Charts — Communications
91
2010-09-09
4. Check for speed and duplex
issues on network. Open
System Preference > Network;
click the Advanced button,
then the Ethernet tab. Verify if
the speed and duplex reported
are what is expected.
Yes
Go to step 5.
No
Change speed and duplex
settings. See article
. Go to step 6.
5. Check for MTU (Maximum
Transmission Unit) issues. See
.
Verify if changing MTU settings
on computer resolves issue.
Yes
Go to step 6.
No
Ethernet controller damaged.
Replace logic board.
M10
6. If changing speed, duplex
or MTU settings allows
connectivity, check with a
known-good, same-model
computer. Verify if known-good
computer produces the same
results.
Yes
Check with ISP or Network
Administrator concerning
speed, duplex & MTU settings.
No
Verify with known good OS.
If issue persists, replace logic
board.
M10
Wireless Input Device Does Not Pair
Quick Check
Symptoms
Quick Check
Wireless Input Device Does Not
Pair
• Can’t get system to recognize a
• Can’t get system to recognize a
Bluetooth keyboard, mouse or
trackpad
trackpad
1. Check computer with a known-good Bluetooth
input device to test computer side.
2. Test Bluetooth device side with a known-good
computer, with up-to-date Mac OS 10.6.x with
installed Bluetooth device driver.
3. Ensure that device is being used within 30-foot
range for Bluetooth devices.
4. See