Apple 24-inch mid 2007

iMac (24-inch Mid 2007) Take Apart — Ambient Temperature Sensor 89

Replacing the Ambient Temperature Sensor

Replacement Note:1. If you are replacing the CPU fan transfer the sensor and the sensor cable

to the replacement fan.

Lower the fan into the rear housing. Press the foam gasket into place across the top of the 2.

fan.

Contents

Main Page iMac (24-inch Mid 2007) Contents Take Apart Page Troubleshooting Views Page Manual Updates 16 December 2008 21 March 2008 19 December 2007 10 December 2007 Troubleshooting 7 November 2007 Take Apart Troubleshooting Page General Information Serial Number Location General Tools Required Special Tools Page Page Page I/O Ports Cleaning and Handling the Glass Panel Dos and Donts DO DO NOT Handling a Broken Glass Panel Safety Page Access Door Removing the Access Door Replacing the Access Door Memory Removing the Memory Replacing the Memory Glass Panel Part Location Cleaning and Handling of the Glass Panel Isopropyl Alcohol (IPA) Cleaning the Glass Cleaning the Silicone Roller DO Metal Alignment Pins on the Glass Panel Page Removing the Glass Panel Page Page Replacing the Glass Panel Page Page Page Page Installing a Replacement Glass Panel Page Page Cleaning Tools Starter Kit Cleaning Tool Resources Ultra Violet Inspection Lamp Front Bezel Removing the Front Bezel Page Page Replacing the Front Bezel Page Camera Board Removing the Camera Board Replacing the Camera Board Battery Page Replacing the Battery IR (Infrared) Board Page Replacing the IR Board AirPort Extreme Card Removing the AirPort Extreme Card Page Page Bluetooth Card Page Replacing the Bluetooth Card LCD Temp Sensor and Cable Page Page Page Page Page Speaker, Left Page Page Page Page LCD Display Panel Page Page Page Replacing the Display Panel Page Page Page Page Page Page Ambient Temperature Sensor Page Page Page LVDS Cable Page Replacing the LVDS Cable Page Page Inverter Cable Page Page Page Page Speaker, Right Page Replacing the Right Speaker Optical Drive Fan Page Replacing the Optical Drive Fan CPU Fan Page Replacing the CPU Fan Power Supply, AC/DC Removing the AC/DC Power Supply Page Page Replacing the AC/DC Power Supply Page Page Hard Drive Page Page Page Page Page Page Hard Drive Sensor Cable Page Replacing the Hard Drive Sensor Cable Optical Drive Removing the Optical Drive Page Page Replacing the Optical Drive Page Optical Flex Cable Removing the Optical Flex Cable Replacing the Optical Flex Cable Optical Sensor Cable Page Page Page Logic Board Page Page Page Page Replacing the Logic Board Page Page Page Video Card Page Page Page Page Hard Drive Fan Page Replacing the Hard Drive Fan Audio Board Page Replacing the Audio Board Hard Drive Data Cable Page Replacing the Hard Drive Data Cable Clutch Cover Page Replacing the Clutch Cover Stand Removing the Stand Page Replacing the Stand Page Chassis Page Page Replacing the Chassis Page Clutch Mechanism Removing the Clutch Mechanism Page Page Page AC Power Inlet Page Page Page Page Page Camera Cable Page Page Page Page Microphone Cable Page Page Page Page Page DC Power Cable Removing the Power Supply Cable Page Page Page Rear Cover Part Location Removing the Rear Cover Replacing the Rear Cover Page Page Power On Self Test (POST) How to Reset the System Management Controller (SMC) To reset the SMC on an iMac (24-inch 2007) DDR Memory Diagnostic LEDs To Access the LEDs: Page Symptom Charts When to Use the Symptom Charts How to Use the Symptom Charts Power Issues No Power Video No Video, No Boot Chime No Video, Boot Chime Heard Video Corruption on the Panel Display is tinted another color. System Shuts Down Unexpected Shutdown or Freezes Glass Panel Contamination inside the glass panel Display Panel Black and white splotches on the LCD panel after it runs for awhile Display does not change but the mouse still moves Hard Drive Flashing question mark, or an alternating question mark and Mac OS (face or a folder) Hard Drive Issues System hangs during normal startup process. Fails Apple Hardware Test for HD Temp Sensor, System Noisy Page Page The computer wont burn discs. Discs wont insert. Optical disc constantly ejects. Fan Sound Fans running at full speed after the computer turns on Loud fan noise coming from inside the computer Page Audible buzzing, whining, or ticking noise. Fans are running at a constant high speed. Page AirPort Not able to connect wirelessly with AirPort Bluetooth Bluetooth devices wont sync with my computer IR Remote IR Sensor/Receiver Supported applications do not respond to input from the remote control. Built-in iSight Camera The built-in camera is not recognized. Camera recognized but no video. Camera image quality poor. Camera recognized but no audio. Audio quality is poor. Speakers Cant hear sound from the speakers. I hear sound out of only one speaker. Mouse The scroll bar on my mouse does not work in all directions. My mouse doesnt work at all. My mouse works intermittently (the cursor freezes randomly) or is slow to respond. My Apple wireless mouse is slow or not tracking correctly. Keyboard Certain keys or none of the keys on the keyboard function. My keys are sticky or slow to respond. When I type, strange characters appear on the screen. The USB port on my keyboard doesnt work. My Apple wireless keyboard is not responding correctly. Error Beep(s) Power On Self Test (POST) Tones iMac display is black and the system beeps nine times (3 short, 3 long, 3 short), then repeats USB A USB device doesnt work. I see a message saying not enough power to function. Page Page iMac (24-inch, Mid 2007)Upper Exploded View iMac (24-inch 2007)Lower Exploded View Screw Chart Screw Chart: Page 1 of 3 Screw Chart: Page 2 of 3 Screw Chart: Page 3 of 3