Apple imac 20 inch mid 2009 User Manual
Here you can view all the pages of manual Apple imac 20 inch mid 2009 User Manual. The Apple manuals for Display are available online for free. You can easily download all the documents as PDF.
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iMac (20-inch, Early/Mid 2009) Symptom Charts — Display 41 2010-11-24 Pixel Anomalies Unlikely cause: logic board, power supply, hard drive, optical drive, fans, speakers, camera, microphone Quick Check SymptomsQuick Check Pixel Anomalies • Dark dot anomalies • Bright dot anomalies • Debris on inside surface of glass panel • Debris on surface of LCD panel 1. Clean outside surface of glass panel using provided cleaning cloth. 2. For information about pixel anomalies, see kBase article:...
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iMac (20-inch, Early/Mid 2009) Symptom Charts — Display 42 2010-11-24 Vertical/Horizontal Lines Unlikely cause: power supply, hard drive, optical drive, fans, speakers, camera, microphone Quick Check SymptomsQuick Check Vertical/Horizontal Lines • Vertical lines • Horizontal lines 1. Boot from install DVD to determine whether potential software issue exists. 2. Verify if issue is visible on an external display. Deep Dive Check ResultAction Code 1. Boot from Install DVD and verify whether issue...
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iMac (20-inch, Early/Mid 2009) Symptom Charts — Display 43 2010-11-24 6. Verify whether issue is still visible after reinstalling LVDS cable. Yes Replace LCD panel. Go to step 7. No Issue resolved with replacement logic board. Return computer to user. M04 7. Verify whether issue is still present with replacement LCD panel installed. Yes Return to step 1 and retest. No Issue resolved with replacement LCD panel. Return computer to user. L04
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iMac (20-inch, Early/Mid 2009) Symptom Charts — Display 44 2010-11-24 Non-Uniform Brightness Unlikely cause: power supply, hard drive, optical drive, fans, speakers, camera, microphone Quick Check SymptomsQuick Check Non-Uniform Brightness • Brightness not uniform • Color not-uniform 1. Verify System Preferences > Displays > Brightness level control is set above minimum. 2. Allow 15 minutes for backlight bulbs to reach normal operating temperature and output before evaluating display. 3....
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iMac (20-inch, Early/Mid 2009) Symptom Charts — Display 45 2010-11-24 Cosmetic Defects Quick Check SymptomsQuick Check Cosmetic Defects to LCD • Cracked LCD • Scratched LCD polarizer • Scorched or melted LCD • LCD impact damage • Foreign material on LCD or back side of glass panel. 1. Determine whether damage was caused by user environment, accidental damage, or abuse. If applicable, inform the user that Apple does not warrant damage caused by accident, abuse, misuse, flood, fire, earthquake,...
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iMac (20-inch, Early/Mid 2009) Symptom Charts — Mass Storage 46 2010-11-24 Mass Storage Hard Drive Not Recognized Unlikely cause: LCD panel, power supply, fans, speakers, camera, microphone Quick Check SymptomsQuick Check Drive Not Recognized (H01) Drive No Boot (H02) • Flashing Question Mark • Boots to Grey Screen • Boots to Blue Screen 1. Use a known-good mouse. A stuck mouse button will not allow boot. 2. Boot from Install DVD. Verify S.M.A.R.T. status of drive using Disk Utility. 3....
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iMac (20-inch, Early/Mid 2009) Symptom Charts — Mass Storage 47 2010-11-24 6. Reseat SATA and logic board hard drive connections and verify whether computer starts up. Yes Go to step 8. No Replace SATA cable. Go to step 8. H04 7. Test with known-good hard drive. Verify that system boots successfully and that Disk utility ‘Verify’ function reports no errors. Yes Install user drive. Go to step 9. No SATA cable verified or replaced and known-good hard drive installed. Suspect possible SATA...
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iMac (20-inch, Early/Mid 2009) Symptom Charts — Mass Storage 48 2010-11-24 Hard Drive Read/Write Error Unlikely cause: LCD panel, power supply, fans, speakers, camera, microphone Quick Check SymptomsQuick Check Drive Read/Write Error (H03) Drive Bad Sector/Defective (H05) Drive Formatting Issues (H07) • Cannot save documents • Read/write error message • Hang when accessing or saving data 1. Boot from Install DVD. Verify S.M.A.R.T. status of drive using Disk Utility. 2. Repair disk using Disk...
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iMac (20-inch, Early/Mid 2009) Symptom Charts — Mass Storage 49 2010-11-24 7. Reboot computer. Verify that system boots successfully and that Disk Utility ‘Verify’ function reports no errors. Yes Issue resolved. Return system to user. No Go to step 6. 8. Reboot computer. Verify that system boots successfully and that Disk Utility ‘Verify’ function reports no errors. Yes Issue resolved. No Hard drive appears to be defective Go to step 9. 9. Replace user hard drive. Does drive format correctly...
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iMac (20-inch, Early/Mid 2009) Symptom Charts — Mass Storage 50 2010-11-24 3. Restart the computer. Verify whether the noise is still present. Yes Go to step 6. No Data error issue resolved by Disk Utility. Return system to user. H06 4. Erase disk and reinstall Mac OS using Install DVD. Verify that installation process completes. Note: Make sure data has been backed up before erasing hard drive. Yes Go to step 3. No Replace hard drive. Go to step 5. H06 5. With replacement hard drive...