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Dell OptiPlex 990 Service Manual

Also see for OptiPlex 990 Desktop: Service manualTech sheetImportant informationSpecificationsSetup and features information

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Contents
  1. Notes, Cautions, and Warnings
  2. Table Of Contents
  3. Table Of Contents
  4. Table Of Contents
  5. Working on Your Computer
  6. Recommended Tools
  7. After Working Inside Your Computer
  8. Cover
  9. Installing The Cover
  10. Front Bezel
  11. Installing The Front Bezel
  12. Optical Drive
  13. Installing The Optical Drive
  14. Hard Drive
  15. Installing the Hard Drive
  16. Memory
  17. Installing The Memory
  18. Chassis Intrusion Switch
  19. Installing The Chassis Intrusion Switch
  20. Speaker
  21. Installing The Internal Speaker
  22. Heat Sink
  23. Installing The Heat Sink
  24. Processor
  25. Installing The Processor
  26. Coin-Cell Battery
  27. Installing The Coin-Cell Battery
  28. Chassis Fan
  29. Installing The System Fan
  30. Input/Output Panel
  31. Installing the Input/Output Board
  32. Power Supply
  33. Installing The Power Supply
  34. System Board
  35. Installing The System Board
  36. Drive Cage
  37. Installing The Drive Cage
  38. Wireless Module
  39. Installing The Wireless Module
  40. Control Panel
  41. Installing The Control Panel
  42. Internal Antenna
  43. Installing The Internal Antenna
  44. System Setup
  45. Timing Key Sequences
  46. Beep Codes and Text Error Messages
  47. Troubleshooting
  48. Beep Codes
  49. Error Messages
  50. Specifications
  51. contacting dell
Dell OptiPlex 990 Service Manual Manual pdf 33 page image
Chassis Fan 12Removing the System Fan1. Follow the procedures inBefore Working Inside Your Computer.2. Remove thecover.3. Remove thefront bezel.4. Remove thedrive cage.5. Disconnect the system-fan cable from the system board.6. Disengage the system-fan cable from the chassis.7. Remove the screws that secure the fan to the chassis.33
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This manual is suitable for:
OptiPlex 990 Desktop
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