Apple MD094LL/A manual Keyboard Specific Keys Do Not Respond, Wired Keyboard/Mouse Not Recognized

Keyboard: Specific Keys Do Not Respond

Quick Check

Symptoms		Quick Check
Keyboard: Specific Keys Do Not		1.	If wireless keyboard is being used verify that it is
Respond			properly paired with computer. Go to Wireless
• One or more keys do not			Input Device Doesn’t Pair symptom flow to
	respond when pressed		resolve pairing issues.
•	Key sticks	2.	The caps lock key has a built-in delay to reduce
•	Keycap missing		accidental activation and must be held for
			approximately ½ second for it to be activated. See
			kBase #TS1578: Apple Keyboard (2007): Caps
			Lock modified to reduce accidental activation.
		3.	Inspect keyboard for signs of liquid spills or other
			contamination. Apple’s warranty does not cover
			accidental damage.
		4.	If keycap is loose attempt to reattach it.
		5.	Use the Keyboard Viewer menu to check every
			key.
		6.	Recheck keyboard with a known-good computer
			with an up-to-date Mac OS X 10.6.x
		7.	Replace keyboard if issue is confirmed (K01 for
			inoperative keys, K17 for wrong/falling keycaps).

Wired Keyboard/Mouse Not Recognized

Quick Check

Symptoms	Quick Check
Wired Keyboard/Mouse Not	1.	Reset SMC.
Recognized	2.	The iMac has 4 USB ports on rear of computer.
• USB wired keyboard/mouse not
		Make sure to try each port to isolate a particular
recognized when plugged in.
		port malfunction.
• Mouse scroll ball not working	3.	Test with a known-good wired keyboard or
or not working as expected.
		mouse to isolate a failed peripheral issue.
• Mouse buttons not working or
	4.	Test a mouse when connected directly to ports
not working as expected.
		on the back of iMac to isolate a keyboard USB
		port issue.
	5.	Ensure that all software and firmware updates for
		this model have been installed to take advantage
		of any available bug fixes.

2010-09-09 iMac (27-inch, Mid 2010) Symptom Charts — Input/Output Devices  108