Apple LATE 2009 manual Symptoms Quick Check Ethernet Port/Device Issue, M24

Ethernet Port/Device Issue

Unlikely cause: Adapter, hard drive, optical drive, fan

Quick Check

Symptoms	Quick Check
Ethernet Port/Device Issue	1.	Check the ethernet cable for damage, try a
• No Ethernet device present		known good Ethernet cable – CAT5 or better
• Unable to access network		recommended for 100Mbps+ connections.
resources	2.	Check Ethernet ports on the Mac and wall/switch
• Ethernet device shows no		for dust, debris, damage or bent pins.
connection	3.	Ensure distance from networking infrastructure is
• Ethernet device unable to an IP		less than 300 feet/ 105 meters
address	4.	Verify port, cable and network hardware with a
• Slow network performance
		known good system. Isolate firewall, MAC address
		filtering or hardware access control devices
	5.	Isolate OS by starting up from original Install
		media for the computer, the same make and
		model computer in Target Disk Mode, or
		compatible known good OS on an external drive.

Deep Dive

Check		Result	Action	Code
1.	Visually inspect the ethernet	Yes	Go to step 2
	port of the computer to ensure
	that all pins will make physical
		No	Pins are damaged, bent flat or	M24
	contact with the CAT5 Ethernet
			missing. Replace logic board
	cable
2.	Boot from original Install media.	Yes	Go to step 3
	Verify Network Link status
	active by using Network Utility	No	If same ethernet cable gives	M10
	under the “Info” tab. Is the Link		an “Active” link status on
	Status “Active”?		a known good computer
			of same make and model,
			replace logic board

2009-11-03 Mac mini (Late 2009) Symptom Charts — Communications  39