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System Board
Dell™OptiPlex™170LUser'sGuide
Jumper Settings
Clearing the CMOS
Replacing the System Board
Jumper Settings
To change a jumper setting, pull the plug off its pin(s) and carefully fit it down onto the pin(s) indicated.
Clearing the CMOS
1. Follow the procedures in "Before You Begin."
2. Reset the current CMOS settings:
a. Remove the battery for at least 2 minutes.
b. Reinstall the battery (see "Battery" for installation steps).
3. Replace the computer cover.
4. Connect your computer and devices to electrical outlets, and turn them on.
Replacing the System Board
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.
NOTICE: Ensure that your computer is turned off and unplugged before you change the jumper settings. Otherwise, damage to your computer or
unpredictable results can occur.
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.
Password features are enabled.
Password features are disabled.
jumpered unjumpered
CAUTION: Before you begin this procedure, follow the safety instructions in the Product Information 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."
NOTICE: To connect a network cable, first plug the cable into the network wall jack and then plug the cable into the computer.
CAUTION: Before you begin this procedure, follow the safety instructions in the Product Information Guide.
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