Dell Inspiron 4000 Service Manual page 38

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.
HINT: To update or reflash the BIOS, see the Dell Portable Computer BIOS Update Guide for instructions.
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
1. Remove the hard drive assembly.
2. Remove the memory module
3. Disconnect the reserve battery cable from the connector on the system board assembly located next to the reserve battery.
4. Remove the reserve battery from the EMI shield:
a. Pry the reserve battery free from the foam pad.
b. Remove the remnants of the foam pad from the EMI shield.
Replacing the Reserve Battery
1. Connect the reserve battery cable to the connector on the system board.
2. Position the reserve battery on the EMI shield next to the connector to minimize slack in the cable.
System Speaker Assembly
The system speakers are located on the front left and right sides of the bottom case assembly. Each speaker assembly is marked with a right and left label.
Take note of the speaker cable routing in the bottom case assembly so that you can replace it correctly.
Removing the Speaker Assembly
NOTICE: Disconnect the computer and any attached devices from electrical outlets, and remove any installed batteries.
NOTICE: To avoid ESD, ground yourself by touching an unpainted metal surface or by using a wrist grounding strap.
NOTICE: Read "Preparing to Work Inside the
Computer" before performing the following procedure.
cover.
Computer" before performing the following procedure.