2500 SX/20  (250-4077)                Battery           Faxback Doc. # 1107

The real-time clock maintains the system time and date. The battery powers 
the clock, enabling it to maintain the correct time and date when the 
computer's power is turned off. Replacement batteries (23-162) are available 
at Radio Shack stores.

The clock battery should last at least three years with normal use. When it
fails, the computer will not retain time and date information correctly.

If the computer does not restart when you turn it on or reset it, it could 
indicate that the battery is weak or dead. Before replacing the battery, 
refer to "Main Logic Board Layout" to locate the battery socket.

If you do not want to replace the battery yourself, a service technician at 
a Radio Shack Service Center will replace it for you.

To replace the battery:

1. Gently lift the battery clip and remove the old battery from the socket 
   on the main logic board.

2. Position the new battery with the positive (+) side up. Lift the clip and
   insert the battery. Run SetupSX to enter the system time and date.

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