Apple Mac mini (Mid 2011 Technical Information Seite 16
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Mac mini (Mid 2011) Take Apart — General Troubleshooting 16
2011-07-21
Sensor Errors
Run latest available service utilities to determine if any sensors or fan are malfunctioning. When
a test reports an error, reseat appropriate connection.
For thermal errors, rst check that all air ows are free from obstruction, that fan rotor is not
mechanically blocked, that fan cable connection is correctly seated on logic board, and that fan
is operating when computer is powered on . If issue persists, replace the corresponding part
(fan, logic board, or power supply). See chart below for correlation between aected thermal
sensor, sensor location, and suggested action to perform.
Note: AHT can be run by pressing the D key on startup (if hard drive was not reformatted). If a
sensor error is detected, AHT will report an error code containing the aected sensor name (ex:
“4SNS/1/40000000 TC0P” error code reports to sensor TC0P).
Sensor Sensor description Sensor location Suggested Action
TA0P Ambient Air proximity thermal
sensor: Excessive incoming ambient
air temperature, or ambient temp
sensor is failing.
Logic board. Test with known-good
logic board.
TA1P Combo Ambient/CPU/PCH/
Wireless/DIMM sensors controller:
Excessive incoming ambient air
temperature, or sensor is failing.
Logic board. Test with known-good
logic board.
TC0P CPU proximity thermal sensor:
Excessive CPU temperature.
Logic board. Test with known-good
logic board.
TC0D CPU diode thermal sensor:
Excessive CPU temperature.
Logic board. Test with known-good
logic board
TG0D/
TG1D
GPU diode thermal sensors:
Excessive GPU temperature.
Logic board (2.5GHz
and 2.7GHz dual-
core only).
Test with known-good
logic board
TG0P GPU proximity thermal sensor:
Excessive GPU temperature.
Logic board (2.5GHz
and 2.7GHz dual-
core only).
Test with known-good
logic board.
TG0M Integrated Graphics/GPU switcher
thermal sensor: Excessive graphics
mode switcher temperature.
Logic board (2.5GHz
and 2.7GHz dual-
core only).
Test with known-good
logic board.
TH0P Internal drive proximity thermal
sensor: Excessive internal drive
temperature.
Logic board. Test with known-good
internal drive or/and
logic board.
TI0P
TI1P
Thunderbolt controller
proximity thermal sensors:
Excessive Thunderbolt controller
temperature.
Logic board. Test with known-good
Thunderbolt cable , bus-
powered Thunderbolt
device, or/and logic
board.
- Apple Technician Guide 1
- Mac mini (Mid 2011) 1
- Take Apart 4
- About This Guide 6
- Manual Updates 7
- Feedback 7
- Overview 9
- Product Congurations 10
- Service Procedure Dierences 10
- Service Part Congurations 10
- Thunderbolt 11
- System Serial Number Location 11
- Troubleshooting 12
- General Troubleshooting 13
- Troubleshooting Theory 14
- Hardware vs. Software 14
- Common Reset Procedures 14
- Starting Up in Safe Mode 15
- Sensor Errors 16
- Functional Overview 18
- Block Diagrams 19
- Symptom Charts 22
- Won’t Start Up 24
- Deep Dive 25
- Intermittent Shutdown 27
- Kernel Panic, System Crashes 31
- No Video 33
- Corrupted Video 35
- Burnt Smell/Odor 37
- Noise, Hum, Vibration 38
- Uncategorized Symptoms 40
- Communications 42
- Quick Check 45
- Ethernet Port/Device Issue 46
- Bluetooth Device Doesn’t Pair 48
- Mass Storage 57
- Hard Drive Noisy 61
- Input/Output Devices 65
- Thunderbolt Not Recognized 72
- USB Devices Not Recognized 82
- Mechanical 89
- System Runs Hot 91
- Physical Damage 92
- General Information 95
- Vertical Insertion 96
- Low-Prole Solid 96
- Platform Flex 96
- Solid State Drive Screws 97
- Logic Board Return 98
- First Remove Hierarchy 99
- Icon Legend 100
- Bottom Cover 101
- 3 Press on the cover to 102
- 1 Lay the Mac mini 102
- 2 Rotate the 102
- Reassembly 103
- 1 Replace the bottom 103
- 2 Rotate the cover 103
- First Steps 104
- 1 Gently spread the 105
- 2 Pull the module out 105
- 3 Repeat to remove 105
- Installation 106
- 1 Carefully press the 106
- 2 Pull the module into 106
- 3 Press down on the 106
- 4 Repeat to install the 106
- 1 Loosen or remove the 108
- 2 The lower right T6 fan 108
- 3 Carefully lift the fan 109
- 4 Carefully disconnect 109
- Cowling 110
- 1 Remove the T6 screw 111
- 2 Lift the cowling up 111
- Antenna Plate 112
- 1 Remove 4 screws 113
- 2 Carefully lift the 113
- 3 Disconnect the 114
- 1 Position the Antenna 114
- 2 Rotate the Antenna 115
- 3 Slide the antenna 115
- 4 A tool, such as the 115
- 5 If the plate is not 116
- 6 Install the 4 screws 116
- Logic Board 117
- 1 Important: Gently 118
- 2 Disconnect the IR 119
- 3 Make sure that at 120
- 4 Remove 2 T6 screws: 120
- 5 Insert the logic board 121
- 6 Carefully push down 121
- 7 Remove the tool 121
- 8 Disconnect the power 122
- 9 Push in on the catch 122
- 10 Once the I/O wall is 123
- 2011-07-21 124
- AirPort/Bluetooth Combo Card 126
- 1 Remove 3 screws: 127
- 2 Disconnect the ex 127
- 3 Disconnect the two 127
- 4 If the speaker has not 127
- 5 If replacing the ex 128
- Speaker 129
- 1 Remove 2 screws: 130
- 3 Note: Check the 131
- 1 Locate the battery 133
- 2 Insert a black stick 133
- 3 Grab the battery as 133
- Hard Drive (Lower Bay) 134
- 1 Important: All logic 135
- 2 Remove 2 T6 screws: 135
- 3 Insert the logic board 136
- 4 Carefully push down 136
- 5 Remove the tool 136
- 6 Slide out the hard drive 137
- 1 Slide hard drive into 137
- 2 Maneuver the drive 138
- 3 Make sure the power 138
- 4 Slide the logic board 138
- 5 Connect all cables to 138
- Power Supply 139
- 1 Slide the power cord 140
- 2 Rotate the power 140
- 4 Use a black stick to lift 141
- Hard Drive (Upper Bay) 143
- 2 Lift the drive and 144
- 3 Remove 4 screws 145
- 4 Lift the drive from the 145
- 1 If installing the drive 145
- 2 Before installing the 145
- Infrared (IR) Board and Cable 146
- 1 Remove 1 screw 147
- 2 Note the IR cable 147
- 3 Remove the IR cable 147
- 1 Insert the IR cable 148
- Housing 149
- Service Source 150
- Exploded View 151
- Screw Chart 152
- External Views 153
- Port View 154
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