Apple Mac mini manual Deep Dive, Symptom Quick Check Intermittent shutdown

- one of the current sensors reached a specified current limit,

These shut downs are due to temperature, voltage, current, fan speed or other hardware related sensor values getting out of range, so the suggested steps for troubleshooting will be:

-to check for all sensors connections and values using the latest available service utilities and Apple Service Diagnostics,

-to check for fan(s) operation,

-to check for cleanliness of the heatsink fins and the air flows,

-to check for correct seating of the heatsink on logic board and presence of adequate thermal material.

Quick Check

	Symptom		Quick Check
	Intermittent shutdown		1.	Collect details from customer on shutdown
	•	Powers off during startup		occurrence and system configuration when it
	• Powers off during desktop use			happens (on startup, when running for a while,
				frequency of shutdowns, running applications,
				shutdown repeatability). If shutdown can be easily
				reproduced, check next steps:
			2.	Check AC cable connection with system
			3.	Reset SMC and PRAM
			4.	Start up with shift key down for safe mode check
			5.	Startup from known-good bootable device
			6.	Run latest available service utilities for sensors +
				thermal tests
Deep Dive
	Check		Result		Action	Code
	1.	Power related shutdown :		Yes	Faulty user’s AC cable. Replace	X03
		Check with known-good AC			user’s AC cable.
		cable.
				No	Symptoms unchanged - Go
		Verify if the shutdown issues
					to step 2
		disappear with known-good
		AC cable.

2010-08-03 Mac mini (Mid 2010) Symptom Charts — Startup and Power  25