TI-83 Plus General Information 739
In Case of Difficulty
Handling a Difficulty
To handle a difficulty, follow these steps.
1. If you cannot see anything on the screen, the contrast may need to
be adjusted.
To darken the screen, press and release y, and then press and
hold } until the display is sufficiently dark.
To lighten the screen, press and release y, and then press and
hold † until the display is sufficiently light.
2. If an error menu is displayed, follow the steps in Chapter 1. Refer to
the Error Conditions table for details about specific errors, if
necessary.
3. If the busy indicator (dotted line) is displayed, a graph or program has
been paused; the TI-83 Plus is waiting for input. Press Í to
continue or press É to break.
4. If a checkerboard cursor ( # ) is displayed, then either you have
entered the maximum number of characters in a prompt, or memory
is full. If memory is full: