1
Getting Started
Installing the Adapter
1. Set POWER=OFF.
2. Connect the adapter cord to the socket on the back of the
calculator.
3. Plug the adapter into an easily accessible electrical outlet
near the calculator.
4. Set POWER=ON, PRT, or IC.
Warning: Using any AC adapter other than the appropriate TI adapter
may damage the calculator and void the warranty.
Installing or Replacing Batteries
1. Set POWER=OFF.
2. If the AC adapter is connected, unplug it.
3. Turn the calculator over and remove the battery
compartment cover.
4. Remove the old batteries, if necessary.
5. Position new batteries as shown in the diagram inside the
battery compartment. Pay close attention to the polarity (+
and – symbols).
6. Replace the battery compartment cover.
7. Set POWER=ON, PRT, or IC.
Texas Instruments recommends you use alkaline batteries for
longer battery life.
Installing the Paper Roll
To avoid paper jams, use quality bond paper. A 2¼-inch roll of
quality bond paper is included with your calculator.
1. Set POWER=ON.
2. Cut the end of the paper squarely.
3. Holding the paper so it unrolls from the bottom, insert the
end of the paper firmly into the slot on the back of the
calculator and press
&
to feed the paper into the printer.
4. Lift the metal paper holder so it extends behind the printer.
5. Place the paper roll on the paper holder.
6. To print, set POWER=PRT or IC.
Note: To prevent damage to the printer (which may void the warranty),
set
POWER=ON
when operating the calculator without paper.
Replacing the Ink Roller (IR-40T)
Negative entries and results are printed in red. All other numbers
are printed in black. If the printing becomes faint, you may need
to replace the 2-color ink roller (IR-40T).
1. Set POWER=OFF.
2. Remove the clear plastic printer-compartment cover. (Press
down and push back to slide the cover off.)
3. Remove the old ink roller by lifting the tab (labeled PULL UP)
on the left side of the roller.
PULL
UP
4. Position the new ink roller and gently press down until it
snaps into place on both sides.
5. Replace the cover.
6. Set POWER=PRT or IC.
Warning: Never refill or moisten the ink roller. This may damage the
printing mechanism and void the warranty.
Key Descriptions
&
Advances the paper.
2
Pressed once, clears an entry, an error, or an overflow
condition. Pressed twice, clears a calculation.
W
Allows you to set a tax rate, choose a currency icon or
set the rate for an optional currency.
^
Converts from the second currency to the first currency.
_
Converts from the first currency to the second currency.
d
In currency conversion calculations, shows the currency
icons one by one.
In calculations that are not currency conversions,
removes the last digit you entered.
!
Changes the sign (+ or –) of the displayed number.
P
Uses the stored tax rate to calculate the tax and then
adds it to the number in the display.
Q
Uses the stored tax rate to calculate the and then subtracts
it from the displayed number to find the pre-tax amount.
/
Prints a reference number or date without affecting calculations.
>
Interprets the number in the display as a percentage.
#
Calculates the selling price and profit or loss amount on an item.
[
Displays and prints the total, but does not clear the total.
\
Displays and prints the total and clears the total. Also
resets the item counter (IC) to zero.
0
Displays and prints the value in memory and clears the
memory. Also clears M from the display and resets the
memory item counter to zero.
;
Displays and prints the current total in memory but does
not clear the memory.
F
Subtracts the displayed number from memory. If a
multiplication or division operation is pending,
F
completes it and subtracts the result from memory.
N
Adds the displayed number to memory. If a multiplication
or division operation is pending,
N
completes it and
adds the result to memory.
