Texas Instruments TI-73 EXPLORER - Manual (Page 337)

Appendix B: Reference Information
331
73B-ENG.DOC Appx B Reference Information, English Julie Hewlett Revised: 07/14/98 3:58 PM Printed:
05/19/99 9:04 AM Page 331 of 20
In Case of Difficulty
If Suggested Action
You cannot see
anything on the
display. Press - $ to darken or - # to lighten
the display contrast.
The
LOW BATTERY
message is displayed
on the Home screen.
Replace the batteries as described in
Appendix C: BatteryàService and Warranty
Information.
A checkerboard
cursor (Ø) is
displayed. Either you have entered the maximum
number of characters in a prompt or
memory is full. If memory is full, press
- Ÿ
4:Delete
, and then delete some
items from memory (See Chapter 13:
Memory Management).
The busy indicator
( © ) is displayed in the
top right corner. A calculation, graph, or program has been
paused; the TIN73 is waiting for input. Press
b to continue, or press ^ to break.
An error message is
displayed. Refer to the section in this chapter entitled
“Error Messages.” Press b to clear.
The TIN73 does not
appear to be working
properly. Press - l as many times as needed to
exit any menu and to return to the Home
screen.
– or –
Be sure that the batteries are installed
properly and that they are fresh.
The difficulty
persists. Refer to Appendix C: BatteryàService and
Warranty Information for information on
how to contact Customer Support to
discuss the problem or to obtain service.