Dell OptiPlex 170L - Manual (Page 69)

Small Desktop Computer
1. Follow the procedures in " Before You Begin ."
2. Remove any installed cards.
3. Disconnect all cables from the system board.
4. Disconnect the fan power cable from the connector on the system board.
5. Remove the heat sink/blower assembly.
6. Remove the processor heat sink.
7. Remove the screw that secures the system board to the computer frame.
8. Lift the system board out of the computer.
9. Place the system board that you just removed next to the replacement system board.
Visually compare the replacement system board to the existing system board to ensure that you have the correct part.
10. Transfer components from the existing system board to the replacement system board:
a. Remove the memory modules and install them on the replacement board.
b. Remove the processor from the existing system board and transfer the processor to the replacement system board.
11. Configure the settings of the replacement system board.
Set the jumpers on the replacement system board so that they are identical to the ones on the existing board.
12. Place the system board inside the computer frame, place the heat-sink base on the system board, and then replace the screw that you removed in
step 7 .
13. Reinstall the processor heat sink.
14. Reinstall the heat sink/blower assembly.
16. Reattach the cables to the system board.
17. Reinstall any cards.
18. Replace the computer cover.
19. Connect your computer and devices to electrical outlets, and turn them on.
Mini-Tower Computer
1. Follow the procedures in " Before You Begin ."
2. If a floppy drive is installed, remove the floppy drive.
3. Remove any installed cards.
4. Disconnect all cables from the system board.
5. Disconnect the fan power cable from the connector on the system board.
6. Remove the heat sink shroud.
7. Remove the processor heat sink.
NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface (such
as the back panel) on the computer.
NOTICE: Before you disconnect a device from the computer or remove a component from the system board, verify that the standby power light on the
system board has turned off.
CAUTION: The processor heat sink can get hot. To avoid burns, ensure that the heat sink has had sufficient time to cool before you touch it.
CAUTION: The processor can get hot. To avoid burns, ensure that the processor has had sufficient time to cool before you touch it.
NOTICE: To connect a network cable, first plug the cable into the network wall jack and then plug the cable into the computer.
CAUTION: The processor heat sink can get hot. To avoid burns, ensure that the heat sink has had sufficient time to cool before you touch it.