Partner 1680X Chess Computer
(600-2428A)                Preparation                Faxback Doc. # 17067

INSTALLING/REPLACING BATTERIES

Your chess computer uses 4AA batteries (not included). Fresh alkaline
batteries, such as Radio Shack Cat. No. 23-552, can provide up to 200
hours of playing time.

1.  Switch I/O to O.

2.  Press down on the battery compartment cover's arrow, then slide the
    cover in the  direction of the arrow

3.  Lift and remove the cover.

4.  If necessary, remove and discard the old batteries.

5.  Insert 4 AA batteries as indicated by the polarity symbols (+ and -)
    inside the compartment

    CAUTION:  Batteries installed incorrectly might leak and damage the
              computer.

6.  Replace the cover.

CAUTION:  Use only fresh batteries of requires size and type.

          Never leave dead or weak batteries in the computer.

          If the computer will not be used for several days, and you do not
          want to save a game, remove the batteries.

          Do not mix old and new batteries.

          Dispose of batteries properly; do not bury or burn them.

If the computer does not function properly, replace the batteries. If it
continues to function improperly, you may need to reset the computer.

USING AN OPTIONAL AC ADAPTER

With an optional AC adapter, such as Cat. No. 273-1455, you can operate
the computer from household AC power.

NOTE:  To save game information, you must install batteries in the computer
       even if you are using an optional AC adapter.

CAUTIONS:  You must use an AC adapter that supplies 9 volts and delivers at
           least 100 milliamps.  Its center tip must be set to negative,
           and its plug must correctly fit the 9VDC/100mA jack on the back
           of the computer.  Using an adapter that does not meet these
           specifications could seriously damage the computer to the
           adapter.

           Turn off the computer by switching I/O to O before you plug or
           unplug the AC adapter or its barrel plug from the computer

           Unplug the AC adapter from the AC outlet before you unplug its
           barrel plug from the computer

Follow these steps to use an AC adapter.

1.  Switch I/O to O.

2.  Insert the AC adapter's barrel plug onto the 9VDC/100mA jack on the
    back of the computer

3. Plug the AC adapter into a standard AC outlet.

RESETTING THE GAME

If your computer does not work properly after you replace the batteries,
you might need to reset it. Insert a pointed object, such as a straightened
paper clip into the AC hole on the bottom of the computer for about 2
seconds.

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