Texas Instruments TI-83 Manual Book page 756

Error Type
WINDOW RANGE
ZOOM
TI-83 Plus General Information
Possible Causes and Suggested Remedies
A problem exists with the window variables.
You defined Xmax  Xmin or Ymax  Ymin.
You defined qmax  qmin and qstep > 0 (or vice
versa).
You attempted to define Tstep=0.
You defined Tmax  Tmin and Tstep > 0 (or vice
versa).
Window variables are too small or too large to graph
correctly. You may have attempted to zoom in or zoom
out to a point that exceeds the
range.
A point or a line, instead of a box, is defined in ZBox.
A operation returned a math error.
ZOOM
TI-83 Plus's numerical
753