Apple Mac mini manual X01, M03

4. Install known-good SDRAM in	Yes	Install user’s SDRAM and	X01
the system. Does the computer		test. If no video issue persist,
start with video?		replace user’s SDRAM. Verify
		that the correct SDRAM type
		is being used.
	No	Go to step 5
5. Take apart system to access,	Yes	Issue solved. Corrupted power
remove battery, check battery		management or depleted
voltage , reinstall good backup		backup battery caused the
battery and retest. Does the		issue. Return system to
computer start with video?		customer.
	No	Replace logic board. Retest.	M03

Corrupted Video

Unlikely cause: Adapter, hard drive, optical drive, fan, or speaker.

Quick Check

Symptoms	Quick Check
Corrupted Video	1.	Connect known-good display and cables, Power
• Text and graphics appear fuzzy		on the display first, then power on the Mac
• Image corrupted		mini. Set System Preferences/Display to native
		resolution. Non-native resolutions are unable to
		produce optimal clarity.
	2.	Make sure all relevant software updates have
		been applied. Graphics driver updates may be
		included with software updates.
	3.	When the issue occurs take a screenshot of the
		display (Command-Shift-3). View the screen shot
		file on another known-good computer. If the
		image corruption can be seen in the screenshot
		then the issue is with the video drivers, software,
		or video/logic board. If the issue cannot be seen
		in the screenshot then the display and cable
		should be tested further.
	4.	Verify if video issue can be reproduced on both
		DisplayPort and HDMI ports.
	5.	Verify if issue can be reproduced with every
		resolution and frequency setting Display in
		System Preferences.
	6.	Boot from install DVD or another known-good
		volume to determine whether a potential
		software/driver related issue exists.
	7.	Go to Deep Dive.

2010-08-03 Mac mini (Mid 2010) Symptom Charts — No Video  48