Dell 160L manual Replacing the System Board, Removing the System Board

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a.Locate the Clear Password and Clear CMOS jumpers on the system board.

b.Remove the password jumper from its pins.

c.Place the password jumper on the Clear CMOS pins and wait approximately 5 seconds.

d.Remove the jumper from the Clear CMOS pins and place the jumper back on the password pins.

7.Replace the computer cover.

NOTICE: To connect a network cable, first plug the cable into the network wall jack and then plug it into the computer.

8.Connect your computer and devices to electrical outlets, and turn them on.

Replacing the System Board

CAUTION: Before you perform this procedure, see the safety instructions in your Setup and Quick Reference Guide.

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. To locate the light, see "System Board Components."

1.Shut down the computer through the Start menu.

2.Ensure that your computer and attached devices are turned off. If your computer and attached devices did not automatically turn off when you shut down your computer, turn them off now.

NOTICE: To disconnect a network cable, first unplug the cable from your computer and then unplug it from the network wall jack.

3.Disconnect any telephone or telecommunication lines from the computer.

4.Disconnect your computer and all attached devices from their electrical outlets, and then press the power button to ground the system board.

CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before opening the cover.

5.Remove the computer cover.

NOTICE: Before touching anything inside your computer, ground yourself by touching an unpainted metal surface, such as the metal at the back of the computer. While you work, periodically touch an unpainted metal surface to dissipate any static electricity that could harm internal components.

Removing the System Board

1.If a floppy drive is installed, remove the floppy drive.

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 shroud/fan assembly.

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.

6.Remove the processor heat sink.

7.Remove the 12 screws that secure the system board to the computer frame.

Four of the 12 screws that secure the system board to the computer frame also secure the heat-sink base to the system board.

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Contents Model MTC2 June 2003 Rev. A00 Control Panel Removing the Control PanelReplacing the Control Panel Replacing the Computer Cover Panel Removing the I/O PanelPage Replacing the I/O Panel Back to Contents Power Supply Removing the Power SupplyReplacing the Power Supply DC Power ConnectorsFloppy Drive Power Connector Volt Power ConnectorPeripheral Power Connectors System Board Components Jumper SettingsSystem Board Resetting Cmos Settings Jumper Setting DescriptionReplacing the System Board Removing the System BoardReplacing the System Board Removing the Computer Cover
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