Apple imac 21 5 inch late 2009 User Manual
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iMac (21.5-inch, Late 2009) Symptom Charts — Input/Output Devices 81 2010-11-18 Audio: Microphone Unlikely cause: LCD display, power supply, hard drive, optical drive, fans Quick Check SymptomsQuick Check Audio: Microphone • Microphone not working • Microphone audio garbled • No sound 1. Verify that no tape, sticky notes, or other objects are blocking microphone located on top of computer near camera. Microscopic perforations on top of computer must be free of obstructions in order for microphone to function. 2. Go to System Preferences > Sound > Input. Verify that sound input device is set to internal microphone. 3. Go to System Preferences > Sound > Input. Verify that “Input volume” setting is set above minimum level. 4. Go to System Preferences > Sound > Input. Verify that “Input level” indicator moves when speaking into microphone. Deep Dive Check ResultAction Code 1. Verify if boot chime is present when system is powered ON. Make sure audio output preferences are not set to mute. Yes Go to step 2. No Reset PRAM and retest. 2. Make sure no cables are connected to external sound input/output ports. Go to System Preferences > Sound > Input and verify that “Internal microphone” is an available option. Yes Go to step 3. No Replace audio cable. M09 3. Go to System Preferences > Sound > Input and verify if “Input volume” is set above minimum sensitivity. Yes Go to step 4. No Set “Input volume” slider to middle position. Retest. 4. Go to System Preferences > Sound > Input and verify if “Input level” indicator moves when speaking into microphone. Yes Microphone and audio input functioning. Go to step 6. No Suspect bad microphone connection. Reseat microphone connector on logic board. Go to step 5.
iMac (21.5-inch, Late 2009) Symptom Charts — Input/Output Devices 82 2010-11-18 5. Inspect microphone cable routing and verify if cable is pinched or damaged. Yes Replace rear housing (microphone cable not available separately). L14 No Go to step 6. 6. Record sound sample using GarageBand or iMovie. Verify if sound quality of sound sample is normal during playback. Yes Microphone circuitry OK. Return system to user. No Replace logic board. M09 Audio: Built-in Speakers Have Distorted Sound Unlikely cause: LCD display, power supply, hard drive, optical drive, fans Quick Check Symptoms Quick Check Audio: Built-in Speakers Have Distorted Sound • No audio from one or both speakers. • Audio from speakers distorted 1. Go to System Preferences > Sound > Output. Verify that sound output device is set to internal speakers and that balance control is set to the center position. 2. Obtain known-good high-quality sound file or use iTunes Store sound samples to evaluate sound quality. Verify suspect sound files on another system to determine if distortion is caused by computer or sound file. 3. Set volume control to mid-range. Overdriving built-in speakers can cause distortion. Deep Dive Check ResultAction Code 1. Go to System Preferences > Sound > Output. Set speaker balance 100% to LEFT speaker and play a known-good sound file. Verify if sound is generated by LEFT speaker and that sound quality is acceptable. Yes LEFT speaker and amplifier circuitry OK. Go to step 2. No Distortion detected in LEFT speaker. Set Balance slider to middle position. Go to step 3. 2. Set speaker balance 100% to RIGHT speaker and play a known-good sound file. Verify if sound is generated by RIGHT speaker and that sound quality is acceptable. Yes RIGHT speaker and amplifier circuitry OK. Set Balance slider to middle. Go to step 3. No Distortion detected in RIGHT speaker. Go to step 4.
iMac (21.5-inch, Late 2009) Symptom Charts — Input/Output Devices 83 2010-11-18 3. Connect external speakers or headphones to audio-out port and play a known-good sound file. Verify if sound quality is acceptable. Yes Suspect bad speaker. Go to step 4. No Audio CODEC or amplifier issue suspected. Replace logic board and retest. M09 4. Inspect LEFT and RIGHT speaker cones and speaker connection cable for damage. Verify if speakers have visible damage. Yes Replace damaged speaker. Retest. L11 No Go to step 5. 5. Install known-good speaker into location where distorted sound was heard. Verify if sound quality improves. Yes Replace speaker. L11 No Speaker amplifier issue suspected. Replace logic board. M09 Audio: Built-in Speakers Have No Audio Unlikely cause: LCD display, power supply, hard drive, optical drive, fans Quick Check Symptoms Quick Check Audio: Built-in Speakers Have No Audio • No audio from one or both speakers. • Audio from speakers distorted 1. Go to System Preferences > Sound > Output. Verify that sound output device is set to internal speakers. 2. Go to System Preferences > Sound > Output. Verify that “Output volume” setting is set above the minimum level and that “Mute” checkbox is not selected. 3. Go to System Preferences > Sound > Output. Verify that “Balance” slider is set to middle position so left and right speakers are both used. Deep Dive Check ResultAction Code 1. Verify if boot chime is present when system is powered ON. Make sure audio output preferences are not set to mute and volume is set to mid-range. Yes Go to step 2. No Reset PRAM and retest.
iMac (21.5-inch, Late 2009) Symptom Charts — Input/Output Devices 84 2010-11-18 2. Make sure no cables are connected to external sound input/output ports. Go to System Preferences > Sound > Output and verify that “Internal speakers” is an available option. Yes Go to step 3. No If “Headphones” is the only available sound output device, replace audio cable. If “Digital output” is the only available sound output device, reseat audio cable to logic board. If issue persists, replace audio cable. If issue persists, replace logic board. L11 L11 M09 3. Go to System Preferences > Sound > Output. Set speaker balance 100% to LEFT speaker and play a known-good sound file. Verify if sound is generated by LEFT speaker and that sound quality is acceptable. Yes LEFT speaker and amplifier circuitry OK. Go to step 4. No No audio in LEFT speaker. Go to step 7. 4. Set speaker balance 100% to RIGHT speaker and play a known-good sound file. Verify if sound is generated by RIGHT speaker and that sound quality is acceptable. Yes RIGHT speaker and amplifier circuitry OK. Set Balance slider to middle. Go to step 5. No No audio in RIGHT speaker. Go to step 7. 5. Verify if user-reported audio issue has been resolved. Yes Issue no longer present. Return system to user. No Go to step 6. 6. Boot system from Install DVD or another known-good bootable volume. Verify if issue still occurs. Yes Go to step 7. No Known-good boot volume works OK. Troubleshoot for software issue. Isolate if issue is application-specific or a possible OS conflict. 7. Connect external speakers or headphones to audio-out port and play a known-good sound file. Verify if sound quality is acceptable. Yes Logic board, internal speakers, and audio-out port functioning correctly. Return system to user. No Go to step 8. 8. Disconnect and carefully inspect audio cable and connection to logic board for damage such as bent pins or pinched/cut wires. Yes Replace damaged audio cable. If issue persists, verify if symptom has changed. L14 No Replace logic board. M09
iMac (21.5-inch, Late 2009) Symptom Charts — Input/Output Devices 85 2010-11-18 Camera Issues Unlikely cause: LCD display, power supply, hard drive, optical drive, fans, speakers, microphone Quick Check SymptomsQuick Check Camera Issues • Camera not detected • No green LED for camera • Excessive blooming • Poor White Balance • Poor Focus • Green image • Image distortion 1. Launch System Profiler and confirm that system’s USB hub and built-in camera are visible. 2. Verify camera lens and glass panel are clean and free of contaminants. Clean glass panel if needed. 3. Launch Photo Booth to verify that green indicator LED near camera lens turns on and image quality is acceptable. Deep Dive Check ResultAction Code 1. Launch System Profiler and verify built-in camera is visible in USB list of devices. Yes Camera recognized. Go to step 2 No Inspect and reseat camera cable connection on logic board. Go to step 2. 2. Launch Photo Booth. Verify if green LED near camera lens turns ON and image appears normal. Yes Camera functioning. Return system to user. No Remove glass and clean both sides. Clean camera lens. If issue persists, replace camera cable. If issue persists, replace camera. If issue persists, replace logic board. X07 X07 M13
iMac (21.5-inch, Late 2009) Symptom Charts — Input/Output Devices 86 2010-11-18 FireWire Device Not Recognized Unlikely cause: LCD display, power supply, hard drive, optical drive, fans Quick Check SymptomsQuick Check FireWire Device Not Recognized • FireWire hard drive not recognized • FireWire optical drive not recognized • FireWire camera not recognized • FireWire printer not recognized 1. For external FireWire drives, make sure any external power source is plugged in and operating to isolate a power issue with the device. 2. Test a known-good FireWire device to isolate a failed peripheral issue. 3. Test a known-good FireWire cable to isolate a FireWire cable issue. 4. Ensure that all software and firmware updates for this model have been installed to take advantage of any available bug fixes. 5. Launch System Profiler and verify if the affected FireWire device is visible on FireWire bus. If yes, then FireWire port and cable are functioning properly. Contact FireWire device manufacturer to verify that device is supported. Deep Dive Check ResultAction Code 1. Unplug all FireWire devices from computer. Reset PRAM. Reconnect FireWire device in question. Verify if FireWire device is recognized. Yes Issue resolved. No Possible logic board failure. Go to step 2. 2. Use a known-good FireWire cable with a known-good FireWire device (such as another Mac in Target Disk Mode). Verify if FireWire device is recognized. Yes Try FireWire device in question with a known-good computer of same model. Go to step 3. No FireWire not recognized. Replace logic board. M12 3. Verify if FireWire device is recognized on a known-good same model computer. Yes Go to step 4. No Device may need additional power. Use a powered FireWire hub. Go to step 5.
iMac (21.5-inch, Late 2009) Symptom Charts — Input/Output Devices 87 2010-11-18 4. Verify if FireWire device is recognized with a known- good FireWire cable on user’s computer. Yes FireWire cable issue. Issue resolved. No FireWire device may need additional power. Go to step 5. 5. Using a powered FireWire hub, and having installed any software or firmware updates for the device, verify if FireWire device is now recognized. Yes Device recognized. Required additional power from hub or update. Issue resolved. No Device may require additional software, or there may be a conflict in the Mac OS. Go to step 6. 6. Create a new user in System Preferences > Accounts and log out current user. Log in on new user account and verify if FireWire device is now recognized. Yes Software Issue. Troubleshoot software on User account. Issue resolved. No Apply all Mac OS and FireWire specific updates. If issue persists, contact device manufacturer for support. FireWire port and cable have been verified.
iMac (21.5-inch, Late 2009) Symptom Charts — Input/Output Devices 88 2010-11-18 USB Device Not Recognized Unlikely cause: LCD display, power supply, hard drive, optical drive, fans Quick Check SymptomsQuick Check USB Device Not Recognized • USB wired keyboard/mouse not recognized • USB external drive not recognized • USB camera not recognized • USB printer not recognized 1. Reset SMC. 2. For printers and external USB drives, make sure any external power source is plugged in and operating to isolate a power issue with device. 3. The iMac has 4 USB ports on rear of computer. Try each port to isolate a particular port malfunction. 4. Test with a known-good wired keyboard or mouse to isolate a failed peripheral issue. 5. Test with a known-good USB cable when dealing with a printer or external USB drive, to isolate a USB cable issue. 6. Ensure that all software and firmware updates for this model have been installed to take advantage of any available bug fixes. 7. Launch System Profiler and verify if device is visible on USB bus. If yes, then the USB port and cable are functioning properly. Contact device manufacturer to verify that device is supported. Deep Dive Check ResultAction Code 1. Unplug all USB devices from the computer except for USB keyboard and mouse. Start computer and reset PRAM. Verify if USB keyboard and mouse are recognized. Yes Test with all USB ports to ensure all USB ports working as expected. Replace logic board for any port failures. No Reset SMC. Go to step 2. 2. Verify if Bluetooth Mouse Setup assistant launches after startup. Yes Bluetooth detected, but external USB devices not recognized. Go to step 3. No Disconnect USB keyboard and mouse. Go to step 4.
iMac (21.5-inch, Late 2009) Symptom Charts — Input/Output Devices 89 2010-11-18 3. Verify if a known-good USB keyboard and mouse are recognized. Yes Test original USB mouse and keyboard. Replace if still not recognized. Go to step 5. No External USB ports not functioning. Replace logic board. M15 4. With no USB devices connected, restart computer. Verify if Bluetooth Mouse Setup assistant launches after startup. Yes Bluetooth detected. Go to step 3. No Bluetooth not recognized. Internal and external USB not functioning. Replace logic board. M15 5. With known-good USB keyboard and mouse working, test USB peripheral in question (USB hard drive or printer, etc.) Verify if device is recognized in System Profiler under USB. Yes Device recognized. Test in all USB ports to ensure all USB ports working as expected. Replace logic board for any port failures. M15 No Device may require more power than supplied by USB ports. Test with a powered USB hub. Go to step 6. 6. Verify if using a powered USB hub resolves the issue. Yes Test device on same USB port of a same-model computer. If other computer does not require a powered USB hub to allow functionality, replace logic board. M15 No Ensure all software and firmware updates have been applied for computer and device. If issue persists, contact device manufacturer for support. The computer’s USB ports and cable have been verified.
iMac (21.5-inch, Late 2009) Symptom Charts — Input/Output Devices 90 2010-11-18 Wired Keyboard Does Not Function Properly Unlikely cause: LCD display, power supply, hard drive, optical drive, fans Quick Check SymptomsQuick Check Wired Keyboard Does Not Function Properly • Some or all keys on the keyboard don’t work • Eject key or Caps Lock key doesn’t seem to work • Some keys don’t work as expected 1. Reset SMC 2. Open System Preferences > Universal Access > Mouse & Trackpad and verify that Mouse Keys is turned OFF. When enabled, Mouse Keys can disable functionality of some or most keys, depending on keyboard used. 3. The iMac has 4 USB ports on rear of computer. Make sure to try each port to isolate a particular port malfunction. 4. Test with a known-good wired keyboard to isolate a failed peripheral issue. 5. Test wired keyboard on a known-good, same- model computer. If it works on the other computer, this may indicate a bad USB port if keyboard doesn’t work at all on user’s computer, or a software issue if keyboard is working but not as expected on user’s computer. 6. Ensure that all software and firmware updates for this model have been installed to take advantage of any available bug fixes. Deep Dive Check ResultAction Code 1. Verify if all keys on keyboard work. Yes Go to step 2. No Go to USB Device Not Recognized symptom flow. 2. Verify if Caps Lock is working as expected. Yes Go to step 3. No Go to Keyboard: Specific Keys Do Not Respond symptom flow 3. Verify if media Eject key is working as expected. Note that to prevent accidentally ejecting media, Mac OS X adds a slight delay to the media Eject key before it takes effect. Yes Go to step 4. No Go to step 5.