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numbers of your existing MathMasters.
To set or change ID numbers, you must
open the calculator and rotate the number
wheels so that the desired digits are visible
throught the ID window. A small philips
screwdriver is required. Read each step all
the way through before accomplishing it.
1.
With the MathMaster face down, remove
the four screws securing the back case.
2.
Remove the back case by lifting and rotat-
ing it to the left, and placing it back-side
down next to the main case (see figure A).
Opaque
wheel
FIGURE A
Transparent
wheel
X-shaped retainer
Retainer screw
Front of case
ID window
Lift & rotate
back of case
gently
to left
Be careful not
to pull on the
battery wires
when case is
opened.
