Removing and Installing Parts: Dell Dimension 9200C Service Manualfile:///T|/htdocs/systems/dim9200C/en/SM_EN/parts.htm[10/31/2012 8:07:53 AM](RJ11INT) modem cable4. Install the new modem:a. Connect the T-shaped connector of the modem cable to the modem.b. Align the modem with the screw holes and press the modem into its connector on the system board (see SystemBoard Components).NOTICE: The connectors are keyed to ensure correct insertion. If you feel resistance, check the connectors for properorientation, then try again.c. Replace and tighten the two screws to secure the modem to the system board.d. Replace the other end of the modem cable to the RJ11 internal connector.5. Connect the power cable to the power connector (POWER) on the system board (see System Board Components).6. Replace the hard drive (see Installing a Hard Drive).7. Replace the computer cover (see Replacing the Computer Cover).Power SupplyRemoving the Power SupplyCAUTION: Before you begin any of the procedures in this section, follow the safety instructions in theProduct Information Guide.1. Follow the procedures in Before You Begin.CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet beforeopening the 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 todissipate any static electricity that could harm internal components.2. Disconnect the AC power cable from the power supply connector.3. Disconnect all DC power cables from the system board and drives.4. Remove the three power supply screws.