Calculator User Manual

Chapter 1: Operating the TI
-
86
17
01OPER.DOC TI-86, Chap 1, US English Bob Fedorisko Revised: 02/13/01 2:18 PM Printed: 02/13/01 2:59 PM Page 17 of 2201OPER.DOC TI-86, Chap 1, US English Bob Fedorisko Revised: 02/13/01 2:18 PM Printed: 02/13/01 2:59 PM Page 17 of 22
To replace the lithium backup battery, remove the battery cover and unscrew the tiny
screw holding the
BACK UP BATTERY
cover in place. Install a new
CR1616
or
CR1620
battery
according to the polarity (+ and
N
) diagram on the cover. Replace the cover and screw.
Turning On and Turning Off the TI-86
To turn on the TI
-
86, press
^
.
♦
If you
previously had turned off the calculator by
pressing
- 
, the TI
-
86 clears any errors and
displays the home screen as it was last displayed.
♦
If Automatic Power Down
TM
(APD
TM
) previously had
turned off the calculator, the TI
-
86 will return as you
left it, including the display, cursor, and any error.
ON
1
0
2
3
65
4
ST
,
( (
=
S
U
Y
Z
VW
RCL
CONS
STRNG
BASE TES MEM
:
ANS
CHAR
O
OFF
CONV
T
PRQ
To turn off the TI
-
86 manually, press
- 
. All settings and memory contents are
retained by the Constant Memory
TM
feature. Any error condition is cleared.
APD turns off the TI
-
86 automatically after about four minutes of non-use to extend battery life.
Adjusting the Display Contrast

Press and release the yellow
-
key.

Press and hold
$
or
#
(above or below the half-shaded circle).
♦
To darken the screen contrast, press and hold
$
.
♦
To lighten the screen contrast, press and hold
#
.
EXIT
x-VAR
MORE
DEL
2nd
ALPHA
x
QUIT
alpha
LINK
INS
MODE
Properly dispose of the old
battery.
If you release
$
or
#
while
adjusting the contrast, you
must press
-
again to
continue the adjustment.