Texas Instruments TI-89 Guide Book

Chapter 1: Getting Started 3
01START DOC TI
-
89/TI
-
92Plus:Getting Started (English) Bob Fedorisko Revised: 02/23/01 10:47 AM Printed: 02/23/01 2:10 PM Page 3 of 12
To install the four AA alkaline batteries:
1. Holding the
TI
-
92 Plus
unit upright, slide the latch on the top of the
unit to the left unlocked position; slide the rear cover down about
one-eighth inch and remove it from the main unit.
I/O
2. Place the
TI
-
92 Plus
face down on a soft cloth to prevent
scratching the display face.
3. Install the four AA batteries. Be sure to position the batteries
according to the diagram inside the unit. The positive (+) terminal
of each battery should point toward the top of the unit.
4. Replace the rear cover and slide the latch on the top of the unit to
the right locked position to lock the cover back in place.
Getting the TI-92 Plus Ready to Use
The TI
-
92 Plus comes with four AA batteries. This chapter
describes how to install these batteries. It also describes how
to turn the unit on for the first time, set the display contrast,
select a language, and view the Home screen for both the
TI
-
92 Plus and the TI
-
89.
Installing the AA
Batteries
Important: When replacing
batteries in the future,
ensure that the
TI
-
92 Plus
is
turned off by pressing
2 ®
.
Slide to open.
top
back
AA batteries
Lithium battery

Texas Instruments TI-89 Specifications

General

Display size (HxV)	100 x 160 mm
Memory type	639K FLASH ROM, 188K bytes RAM
Compatible operating systems	Operating System 2.09
Battery type	AAA