Back to Contents PageSystem Board AssemblyDell Studio™ 1557/1558 Service ManualRemoving the System Board AssemblyReplacing the System Board AssemblyThe BIOS chip in the system board contains the Service Tag, which is also visible on a barcode label on the bottom of the computer.Removing the System Board Assembly1. Follow the instructions in Before You Begin.2. Remove the palm rest (see Removing the Palm Rest).3. Remove the optical drive (see Removing the Optical Drive).4. Disconnect the fan cable, AC adapter cable, USB cable, ExpressCard cables, and subwoofer cable from their respective system board connectors.5. Remove the six screws that secure the system board to the computer base.6. Remove the processor heat sink (see Removing the Processor Heat Sink).7. Remove the processor (see Removing the Processor Module).8. Remove the processor bracket from the system board.9. Remove the Mini-Card from the system board (see Removing the Mini- Card).WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety bestpractices information, see the Regulatory Compliance Homepage at www.dell.com/regulatory_compliance.CAUTION: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metalsurface (such as a connector on the back of the computer).CAUTION: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Dell™is not covered by your warranty.CAUTION: To help prevent damage to the system board, remove the main battery (see Before Working Inside Your Computer) before workinginside the computer.1 fan cable connector 2 screws (6)3 AC adapter cable connector 4 USB cable connector5 ExpressCard cables 6 subwoofer cable connector7 system board