Apple MacBook Pro 13 inch - Page 83

MacBook Pro (13-inch) Symptom Charts — Communications 83
2010-09-14
3. Verify if IP address is listed
for the Ethernet interface in
System Preferences: Network.
Connect computer to network
with known-good DHCP IP
allocation, ensuring static
DHCP maps or ltering is not
preventing address allocation.
Note: DHCP allocation may not
be instantaneous depending
on network. Retest.
Yes Go to step 4.
No If connection is OK on known-
good system, replace logic
board.
M10
4. Verify connection by using
Network Utility to ping another
connected computer on
same subnet. Ensure target
computer’s IP address is valid,
on same subnet and powered
on. Ensure no MAC address
ltering or hardware access
control devices are present.
Use a simple hub/switch
environment.
Yes Go to step 5.
No If the symptoms do not
change, replace the logic
board.
M10
5. Verify Ethernet performance
and reliability by starting up
from a known-good OS install,
and downloading a large le
from a web site or le server.
Yes If there is no performance or
connectivity issue isolated
solely to system under test,
the problem may be the
network environment. No
repair is necessary.
No If there are connection
dropouts or poor
performance not seen on
a known-good test system,
replace logic board.
M10