The procedures in this document may require the following tools:
Small flat-blade screwdriver
Phillips screwdriver
Small plastic scribe
Flash BIOS update program CD (see the Dell Support website at support.dell.com)
Turning Off Your Computer
CAUTION:
To avoid losing data, save and close all open files and exit all open programs before you turn off
your computer.
1. Shut down the operating system:
In Windows Vista®:
Click Start
, then click the arrow in the lower-right corner of the Start menu as shown below, and then click
Shut Down.
In Windows® XP:
Click Start
®
Turn Off Computer
®
Turn Off.
The computer turns off after the operating system shutdown process is complete.
2. Ensure that the computer and all attached devices are turned off. If your computer and attached devices did not
automatically turn off when you shut down your operating system, press and hold the power button for about 6
seconds to turn them off.
After Working Inside Your Computer
After you complete any replacement procedure, ensure you connect any external devices, cards, and cables before turning on
your computer.
1. Replace the
cover
.
CAUTION:
To connect a network cable, first plug the cable into the network device and then plug it into the
computer.
2. Connect any telephone or network cables to your computer.
3. Connect your computer and all attached devices to their electrical outlets.
4. Turn on your computer.
5. Verify that the computer works correctly by running the Dell Diagnostics. See
Dell Diagnostics
.
Back to Contents Page
Содержание OptiPlex 780
Страница 2: ......
Страница 26: ...7 Lift the hard drive and remove it from the system ...
Страница 29: ...4 Pull up on the drive release latch and then slide the floppy drive towards the back of the computer ...
Страница 30: ...5 Lift the floppy drive up and away from the computer ...
Страница 37: ...7 Release the processor power connector cable from routing guides under the system board ...
Страница 38: ...8 Remove the screws that secure the power supply to the back of the chassis ...
Страница 40: ...10 Lift the power supply up and away from the computer ...
Страница 43: ...4 Lift the fan and remove it from the computer ...
Страница 44: ...Replacing the Fan To replace the fan perform the above steps in reverse order Back to Contents Page ...
Страница 46: ...6 Disconnect the fan power cable 7 Disconnect the main power cable from the system board ...
Страница 47: ...8 Disconnect the IO panel cable ...
Страница 48: ...9 Disconnect the optical drive data cable from the system board ...
Страница 49: ...10 Disconnect the hard drive data cable from the system board ...
Страница 50: ...11 Disconnect the processor power cable ...
Страница 51: ...12 Remove the screws that secure the system board to the computer chassis ...
Страница 52: ...13 Remove the heat sink assembly bracket ...
Страница 56: ...4 Lift the drive release latch and then slide the drive towards the back of the computer ...
Страница 57: ...5 Lift and remove the drive from the computer ...
Страница 61: ...6 Lift the hard drive and remove it from the computer ...
Страница 64: ...4 Gently pull the riser cage handle and lift the riser cage up and away from the computer ...
Страница 65: ...5 On the riser cage rotate the card retention latch upward ...
Страница 69: ......
Страница 71: ...3 Rotate the heat sink upwards 4 Lift the heat sink and remove it from the computer ...
Страница 73: ...6 Lift the processor cover ...
Страница 74: ...7 Remove the processor from the computer ...
Страница 79: ...4 Gently rotate the IO panel away from the computer and then remove it from the computer ...
Страница 80: ...Replacing the IO Panel To replace the IO panel perform the above steps in reverse order Back to Contents Page ...