Apple MD094LL/A Optical Drive Not Recognized, Symptoms Quick Check Drive Not Recognized/Mount

Optical Drive Not Recognized

Unlikely cause: LCD panel, power supply, fans, speakers, camera, microphone

Quick Check

Symptoms	Quick Check
Drive Not Recognized/Mount	1.	Use System Profiler Serial-ATA section to see if
• Discs inject and eject, but do		optical drive appears.
not appear in Finder	2.	System Profiler Serial-ATA section will show any
• Verify that optical media is not		media inserted.
physically damaged	3.	Check Finder Preferences and make sure “CD’s,
		DVD’s and iPods” is checked under “Show these
		items on the desktop” in the General section.

Deep Dive

Check		Result	Action	Code
1.	Verify if optical drive is listed	Yes	Go to step 2.
	in Serial-ATA section of System
		No	Go to step 3.
	Profiler.
2.	Test both CD and DVD media.	Yes	No issue, or possible
	Verify if optical drive can read		intermittent issue. Gather
	both CD and DVD media.		more information from user.
		No	If both types of media fail,
			check that Finder Preferences	J03
			are set to “show CD’s and
			DVD’s”, then go to step 3.
			If only one type of media fails,
			drive has a laser pickup issue.
			Replace optical drive.
3.	Connect known-good optical	Yes	SATA cable and port on logic
	drive to SATA cable. Verify if		board good. Go to step 5.
	both CD and DVD media are
		No	Go to step 4.
	read reliably.
4.	Reseat SATA cable connections	Yes	Go to step 6.
	at optical drive and logic board
		No	Replace SATA cable and test.	X03
	(cable connects to back of logic
	board). Verify if both CD and		If issue persists, replace logic	M19
	DVD media are read reliably.
			board.
			Go to step 6.

2010-09-09 iMac (27-inch, Mid 2010) Symptom Charts — Mass Storage  76