Canon P23-DH Instructions

By Joel Douglas

The Canon P23-DH calculator features a 12-digit LCD display, a printer capable of printing 12-digit lines at 2.3 lines per second and a built-in clock and calendar function. The printer prints positive numbers in purple ink and negative numbers in red. You can use it to figure time-based calculations like fees, wages and profit margins. The Canon P23-DH uses four AA batteries and includes an AC adapter for powering the calculator from an electrical outlet.

Things You'll Need

  • Four AA batteries
  • 57mm plain paper roll
  • CP-13 ink roller
  • Scissors

Installing the Batteries

Step 1

Flip the calculator over. Slide the battery cover in the direction indicated by the arrow to remove it.

Step 2

Insert each of the four AA batteries into the battery chamber. Align the negative end of the battery with the negative contact inside the battery chamber, using the (-) marker as a guide.

Step 3

Slide the battery cover back into place.

Installing the Ink Roller

Step 1

Slide the power switch to the "Off" position. Slide the printer cover in the direction indicated by the arrow to remove it.

Step 2

Grasp and hold the left side of the ink roller labeled "Pull Up." Raise the ink roller to remove it from the calculator.

Step 3

Insert the new ink roller. Make sure that you insert it with the "Pull Up" label on the left side. Press down on the ink roller to lock it in place. Replace the printer cover and slide it back into place.

Installing the Paper Roll

Step 1

Raise the paper arm on the left side of the calculator. Install the paper roll on the paper arm.

Step 2

Unspool the paper roll several inches. Cut the end of the paper roll diagonally. Begin at the left side of the paper and cut upward at a 45-degree angle. Insert the cut end of the paper roll into the paper slot on the back of the calculator.

Step 3

Slide the power switch to the "Power On/Printer On" position. Press the "Feed" button to spool the paper several inches through the paper slot.

Using the Calculator

Step 1

Slide the power switch to "Power On/Printer Off" to view calculations on the display screen. Switch the power switch to "Power On/Printer On" to view calculations on the display screen and to print them out.

Step 2

Slide the Decimal Point Selector Switch to "Add Mode" to set the calculator for two-digit decimals if working with currency calculations. Slide the switch to the "F" position when working with floating decimal points.

Step 3

Press the "Calendar/Clock" button to toggle between calendar and time display. Press the "Clock/Date Set" button to input the correct time and date.

Tips & Warnings

  • Canon recommends replacing the ink roller every eight rolls of paper.