MMPC Model 10/20  (250-1640/41)         Battery        Faxback Doc. # 2523

Replacing the Battery

NOTE: The part number for the MMPC Model 10 and MMPC Model 20 is:
      
      CS-1005  This battery can be ordered through National Parts.

Each time you turn on the computer, it accesses a battery-backed memory
chip (CMOS RAM) that contains information about your computer
configuration.  The CMOS RAM battery also powers a real-time clock that
keeps the system time and date.

When the battery fails, the computer loses the configuration and the time
and date information each time you turn off the computer.

>  Warning:  Improper handling of this lithium battery can 
   be hazardous.  Never recharge, disassemble, or heat the
   battery above 100øC (212øF).  Never solder directly to
   the battery or expose the contents of the battery to 
   water.  Dispose of used batteries according to the
   manufacturer's instructions.  Replace the battery with a
   battery with a battery of the same type.

To replace the battery:

1.  Turn off the computer and disconnect all cables.

2.  Refer to "Main Logic Board Layout" to locate the
    battery socket:

3.  Carefully lift the battery clip, and remove the old 
    battery from the socket:

4.  Insert the new battery, positive (+) side up.

5.  Close the computer.  Refer to "Closing the Computer."

6.  Run the setup utility to enter the correct time and 
    date.  Refer to the "Utilities" section for more
    information.

NOTE: To clear the CMOS just remove the lithium battery.

(smc-02/02/94)