Introduction
This manual provides instructions for the proper setup, operation, maintenance, and troubleshooting of your Casio HR-8L Handheld Printing Calculator. Please read this manual thoroughly before using the calculator to ensure optimal performance and longevity.
The Casio HR-8L is a portable printing calculator designed for quick and accurate computations, suitable for various environments including office and personal use. It features a 10-digit display and a printing mechanism for transaction records.
Product Overview
Figure 1: Casio HR-8L Handheld Printing Calculator shown with its accompanying instruction manual. This image provides a general view of the calculator's design and its compact size, highlighting the key layout and the paper roll compartment.
Figure 2: A top-down perspective of the Casio HR-8L Handheld Printing Calculator, emphasizing the display screen, key arrangement, and the integrated paper roll cover. This view helps in identifying the various functional buttons.
Figure 3: The Casio HR-8L Handheld Printing Calculator in operation, demonstrating the paper roll extending from the top. This image illustrates the printing capability and the visibility of the printed calculations on the paper tape.
Setup
1. Power Source
The Casio HR-8L operates on four (4) AA batteries. Ensure fresh batteries are installed correctly according to the polarity markings in the battery compartment. The unit can also be powered by an optional power supply (not included).
2. Installing the Paper Roll
- Open the paper roll compartment cover.
- Place a new 2.25-inch width paper roll into the compartment, ensuring the paper feeds from the bottom of the roll.
- Feed the leading edge of the paper through the printer slot until it emerges from the top.
- Close the paper roll compartment cover.
- Press the AUTO FEED button to advance the paper roll if needed.
Operating Instructions
Basic Operations
- Power ON/OFF: Press the ON/AC button to turn the calculator on and clear all entries. Press the OFF button to turn it off.
- Number Entry: Use the numeric keypad (0-9) to enter numbers.
- Arithmetic Operations: Use the +, -, ×, ÷ keys for addition, subtraction, multiplication, and division.
- Equals: Press the = key to display the result of a calculation.
- Clear Entry: Press the C key to clear the last entered number or operation.
- Decimal System: The calculator supports a full decimal system, including options for floating, fixed (0 to 3) with round-off, and cut-off modes. Refer to the original manual for specific key combinations for these settings.
Memory Functions
- Memory Clear (MC): Clears the memory content.
- Memory Recall (MR): Recalls the memory content to the display.
- Memory Minus (M-): Subtracts the displayed value from the memory content.
- Memory Plus (M+): Adds the displayed value to the memory content.
Special Functions
- Percentage (%): Calculates percentages.
- Markup/Markdown: Use the dedicated key for markup/markdown calculations.
- Time Calculations: The calculator supports time-related calculations.
- Function Command Sign: A function command sign appears in the display to indicate the current operation.
Maintenance
Cleaning
To clean the calculator, wipe the exterior with a soft, dry cloth. For stubborn dirt, a slightly damp cloth can be used, but ensure no moisture enters the device. Do not use abrasive cleaners or solvents.
Battery Replacement
When the display dims or printing becomes faint, it is time to replace the batteries. Turn off the calculator, open the battery compartment, remove the old batteries, and insert new AA batteries, observing correct polarity. Dispose of old batteries responsibly.
Paper Roll Replacement
Replace the paper roll when it runs out, following the instructions in the "Setup" section. Use only 2.25-inch width paper rolls designed for printing calculators.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Calculator does not turn on. | Dead or incorrectly installed batteries. | Replace batteries with new ones, ensuring correct polarity. Check if an optional power supply is connected and functioning. |
| Display is dim or blank. | Low battery power. | Replace batteries. |
| Printer is not printing or print is faint. | No paper, paper jammed, or low battery. | Check paper roll and ensure it is installed correctly. Clear any paper jams. Replace batteries. |
| Incorrect calculation results. | Incorrect input or decimal settings. | Review your input sequence. Check decimal settings (floating, fixed, round-off, cut-off). Press ON/AC to clear and restart. |
Specifications
- Model: HR-8L
- Display: 10-digit LCD
- Printing Speed: 1.6 lines per second
- Paper Roll Width: 2.25 inches (dual paper roll system)
- Power Source: 4 x AA batteries or optional AC adapter
- Dimensions (approx.): 1.5 x 3.6 x 7.5 inches (H x W x D)
- Weight (approx.): 10.5 ounces (without batteries)
- Functions: Basic arithmetic, percentage, memory (MC, MR, M-, M+), markup/markdown, time calculations, full decimal system (floating, fixed 0-3 with round-off/cut-off).
Warranty Information
Casio products typically come with a limited manufacturer's warranty. For specific warranty terms and conditions, including duration and coverage, please refer to the warranty card included with your product packaging or visit the official Casio website. Keep your proof of purchase for warranty claims.
Customer Support
For further assistance, technical support, or inquiries regarding your Casio HR-8L calculator, please visit the official Casio support website or contact their customer service department. Contact information can typically be found on the Casio website or in the product packaging.
You can visit the Casio Store for more information: Casio Calculators Store
