Apple imac 20 inch mid 2009 User Manual
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Page 151
iMac (20-inch, Early/Mid 2009) Take Apart — Ambient Temp Sensor Cable 151 2010-11-24 Removal 1 Disconnect ambient temp sensor cable (922-8826) from logic board. 2 Release cable from retaining clip on side of CPU fan. Note: Image at right shows a map of connectors on bottom left of logic board. Ambient temp sensor cable connects to the furthest left of the 4 connectors.
Page 152
iMac (20-inch, Early/Mid 2009) Take Apart — CPU Fan 152 2010-11-24 First Steps Remove: • Access Door • Glass Panel • Front Bezel • LCD Panel • Left Speaker • Ambient Temp Sensor Cable Tools • ESD wrist strap CPU Fan
Page 153
iMac (20-inch, Early/Mid 2009) Take Apart — CPU Fan 153 2010-11-24 Removal 1 Disconnect cable from logic board near memory slots. 2 Lift fan straight up and off 3 guideposts in rear housing. Note: Image at right shows a map of connectors on bottom left of logic board. CPU fan cable connects to the furthest right of the 4 connectors.
Page 154
iMac (20-inch, Early/Mid 2009) Take Apart — Right Speaker 154 2010-11-24 First Steps Remove: • Access Door • Glass Panel • Front Bezel • LCD Panel Tools • ESD wrist strap • Torx T10 screwdriver Right Speaker
Page 155
iMac (20-inch, Early/Mid 2009) Take Apart — Right Speaker 155 2010-11-24 Removal 1 Remove T10 screw: (1) 922-8208 2 Disconnect cable from audio board. 3 Lift speaker up and out of computer.
Page 156
iMac (20-inch, Early/Mid 2009) Take Apart — Audio Board 156 2010-11-24 First Steps Remove: • Access Door • Glass Panel • Front Bezel • LCD Panel • Right Speaker Note: If replacing logic board, be sure to leave audio board attached and return it with the old logic board. Tools • ESD wrist strap • Torx T6 screwdriver Audio Board
Page 157
iMac (20-inch, Early/Mid 2009) Take Apart — Audio Board 157 2010-11-24 Removal 1 Disconnect 3 cables: • left speaker (5-pin) • microphone (3-pin) • audio-to-logic board (922-8835) Right speaker cable (4-pin) should have been previously disconnected. 2 Remove T6 screws: (4) 922-8579
Page 158
iMac (20-inch, Early/Mid 2009) Take Apart — Audio Board 158 2010-11-24 3 Remove EMI tape on back side of board. 4 Lift audio board off logic board.
Page 159
iMac (20-inch, Early/Mid 2009) Take Apart — Logic Board 159 2010-11-24 First Steps Remove: • Access Door • Glass Panel • Front Bezel • LCD Panel • Right Speaker Important: If replacing logic board, be sure to leave audio board attached and return it with the old logic board. Note: The iMac (20-inch, Mid 2009) does not have an IR Board or Bluetooth Board. Tools • ESD wrist strap • Torx T8 screwdriver • Torx T10 screwdriver Logic Board
Page 160
iMac (20-inch, Early/Mid 2009) Take Apart — Logic Board 160 2010-11-24
Removal
1
Disconnect 16 cables
from logic board.
1. hard drive temp
2. optical drive temp
3. hard drive fan
4. ambient temp
5. power button
6. CPU fan
7. power
8. hard drive data
9. AirPort antenna
10. AirPort antenna
11. camera
(routes
over, not under,
the logic board.)
12. Bluetooth antenna
(Early 2009 only)
13. left speaker
14. microphone
15. optical drive fan...