4025 LX  (250-5125)                Battery              Faxback Doc. # 1627

┌───────────────────────────────────────────────────────────────────────┐
│For battery replacement, order:                                        │
│                                                                       │
│  Part Number   Voltage     Description                                │
│                                                                       │
│  CS 0232       3.6 volt    Lithium Clock Battery (3 pin connector)    │
└───────────────────────────────────────────────────────────────────────┘

The 4025 LX uses a long life lithium battery.  It powers the real-time
clock and CMOS RAM when the computer is turned off.  The clock maintains
the system date and time.  CMOS RAM stores information about your system
configuration.

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REPLACING THE BATTERY
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Each time you turn on the computer, it accesses a battery-backed memory
chip (CMOS RAM) that contains information about important devices in the
system as well as the time and date information.

The CMOS RAM battery should last at least three years of normal use.
When it fails, the following prompt is displayed when you turn on your
computer:

     Invalid configuration information - please run Setup program

NOTE:  Before a new CMOS RAM battery can be installed, the 3½-inch drive
platform must be removed from the drive tower.  If you have a hard disk
drive mounted on the platform, run the Prepare System for Moving utility
to park the drive heads.

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Your computer uses a special lithium battery.  Contact your Radio Shack
Service Center to select an appropriate replacement battery.  If you
wish, a technician at the Radio Shack Service Center will install the
battery for you.

WARNING:  Improper handling of this special lithium battery can be
hazardous.  Never recharge the battery, disassemble it, or heat it above
100° C (212° F).  Never solder directly to the battery or expose the
contents of the battery to water.

Follow these steps if you choose to replace the battery yourself:

1.  Run the Prepare System for Moving utility if any hard disk drives
    are mounted in the computer.
2.  Remove the computer cover.
3.  Remove the 3.5 inch drive platform from the top of the drive tower.
    To do this, remove the two screws that secure the platform to the
    front of the computer.  Then, slide the platform back until it
    uncouples from the top of the drive tower.
4.  The battery is attached to a strip of Velcro on the inside of the
    computer.  Pull the battery off the Velcro.
5.  Disconnect the battery from the connector marked J3 on the main
    logic
    board.
6.  Attach the new battery to the front of the computer.
7.  Connect the new battery to J3.
8.  Replace the 3.5 inch drive tower, and replace the computer cover.
9.  Run the Setup utility to enter and store the configuration
    information.

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