Apple Macbook Pro Aluminum 13-Inch Black Laptop Keyb Technical Guide - Page 56

3. Verify if IP address is listed Yes for the Ethernet interface in System Preferences: Network. No Connect computer to network with known-good DHCP IP allocation, ensuring static DHCP maps or filtering is not preventing address allocation. Note: DHCP allocation may not be instantaneous depending on network. Retest. 4. Verify connection by using Yes Network Utility to ping another connected computer on the No same subnet. Ensure the target computer's IP address is valid, on the same subnet and powered on. Ensure no MAC address filtering or hardware access control devices are present. Use a simple hub/ switch environment. 5. Verify Ethernet performance Yes and reliability by starting up from a known-good OS install, and downloading a large file from a web site or file server. No Go to step 4. If connection is OK on known- M10 good system, replace logic board. Go to step 5 If the symptoms do not M10 change, replace the logic board. If there is no performance or connectivity issue isolated solely to the system under test, the problem may be the network environment. No repair is necessary. If there are connection M10 dropouts or poor performance not seen on a known-good test system, replace the logic board. 2010-06-15 MacBook (13-inch, Aluminum, Late 2008) Symptom Charts - Communications 56