 Apple Technician Guide MacBook Pro (15-inch, Mid ... - tim.id.au

2010-08-05
Communications
Ethernet Port/Device Issue
Unlikely cause: power adapter, battery, speakers, optical drive, hard drive, fan, camera,
microphone, top case, display assembly, AirPort card
Quick Check
Symptom Quick Check
Ethernet Port/Device Issue
• No Ethernet device present
• Unable to access network
resources
• Ethernet device shows no
connection
• Ethernet device unable to get
an IP address
• Slow network performance
Deep Dive
1. Check the network cable for damage, try a
known good Ethernet cable – CAT5 or better
recommended for 100Mbps+ connections.
2. Check Ethernet ports on Mac and wall/switch for
dust, debris, damage or bent pins.
3. Ensure distance from networking infrastructure is
less than 300 feet / 105 meters.
4. Verify port, cable and network hardware with a
known good system. Isolate firewall, MAC address
filtering or hardware access control devices.
5. Check system logs. Isolate OS by starting up
from original product install media (10.6.x) or
compatible known good Mac OS.
Check Result Action Code
1. Visually inspect Ethernet
connector to ensure all pins
will make physical contact with
CAT5 network cable.
2. Isolate OS by booting from
original install media. Verify
Network Link status active by
using Network Utility on install
DVD. If the Ethernet interface
(en0) Link Status is inactive,
recheck physical connect and
link activity indicator on hub/
switch.
Yes Ethernet interface contacts
are good. Go to step 2.
No Pins are damaged or bent flat,
replace logic board.
Yes Ethernet interface (en0) Link
Status is active, go to step 3.
No If connection is OK on knowngood
system, replace logic
board.
M10
M10
MacBook Pro (15-inch, Mid 2010) Symptom Charts — Communications 50