3Update the BIOS using a flash BIOS update program diskette or CD.

NOTE: For instructions to update or flash the BIOS, see the Dell Portable Computer BIOS Update Guide.

Reserve Battery

NOTICE: The reserve battery provides power to the computer’s RTC and NVRAM when the computer is turned off. Removing the battery causes the computer to lose the date and time information as well as all user-specified parameters in the BIOS. If possible, make a copy of this information before you remove the reserve battery.

Removing the Reserve Battery

NOTICE: Disconnect the computer and any attached devices from electrical outlets, and remove any installed batteries.

NOTICE: To avoid ESD, ground yourself by using a wrist grounding strap or by touching an unpainted metal surface on the computer.

NOTICE: Read "Preparing to Work Inside the Computer" before performing the following procedure.

Re s e r v e B a t t e r y

reserve battery

reserve battery cable

reserve battery connector

Removing and Replacing Parts

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Dell C600 service manual Removing the Reserve Battery, Re s e r v e B a t t e r y