Dell OptiPlex 780 User Manual Page 4
- Page / 73
- Table of contents
- BOOKMARKS
- Notes, Cautions, and Warnings 1
- Working on Your Computer 2
- Turning Off Your Computer 3
- Removing and Replacing Parts 4
- Specifications 5
- System Board Layout 8
- System Setup 9
- System Setup Options 10
- Boot Sequence 14
- Booting to a USB Device 15
- Password Protection 15
- Assigning a System Password 16
- Typing Your System Password 16
- Administrator Password 17
- Clearing Forgotten Passwords 18
- Jumper Settings 18
- Clearing CMOS Settings 19
- Diagnostics 21
- Power Button Light Codes 22
- Beep Codes 23
- Diagnostic Lights 24
- Removing the Cover 26
- Replacing the Cover 27
- Drive Cage 30
- Replacing the Drive Cage 33
- Optical Drive 34
- Replacing the Optical Drive 35
- Removing the WLAN Card 36
- Replacing the WLAN Card 38
- System Fan 39
- Replacing the System Fan 41
- Heat Sink and Processor 42
- 9. Open the processor cover 44
- Back to Contents Page 45
- Intrusion Switch 46
- Coin-Cell Battery 48
- System Board 50
- Replacing the System Board 53
- Front Bezel 54
- Replacing the Front Bezel 55
- Hard Drive 56
- Replacing the Hard Drive 57
- Control Panel 58
- Replacing the Control Panel 60
- Internal Antenna Cable 61
- Internal Speaker 64
- Removing the Memory Module(s) 66
- I/O Panel 68
- Replacing the I/O Panel 70
- Power Supply 71
- Replacing the Power Supply 73
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