1. Introduction
This manual provides comprehensive instructions for the setup, operation, and maintenance of your Casio FR-2650TM 2-Color Professional Desktop Printing Calculator. This calculator features a large display and extra-large print for enhanced readability, along with multiple functions to meet various calculating needs.
An angled view of the Casio FR-2650TM printing calculator, showing its grey casing, large digitron display, and the paper roll emerging from the top. The keypad includes numeric keys, function keys for memory, tax, cost/sell/margin, and basic arithmetic operations. The model name 'FR-2650TM' is visible on the display panel.
2. Setup
2.1. Unpacking and Components
Carefully remove the calculator and all accessories from the packaging. Ensure the following components are present:
- Casio FR-2650TM Calculator Unit
- AC Adapter (if included)
- Starter Paper Roll
2.2. Power Supply
The Casio FR-2650TM can be powered by an AC adapter or batteries. For continuous use, it is recommended to use the AC adapter.
- AC Adapter: Insert the AC adapter plug into the DC IN jack on the back of the calculator. Plug the other end into a standard electrical outlet.
- Batteries: If using batteries, open the battery compartment cover on the bottom of the unit. Insert the required batteries (refer to specifications for type and quantity) ensuring correct polarity (+/-). Close the cover securely.
2.3. Paper Roll Installation
To enable printing, a paper roll must be installed correctly.
- Open the paper roll cover located at the top rear of the calculator.
- Place the new paper roll into the compartment, ensuring the paper feeds from the bottom of the roll.
- Feed the leading edge of the paper into the printer slot until it emerges from the front.
- Close the paper roll cover. Use the FEED button to advance the paper if needed.
3. Operating the Calculator
3.1. Basic Arithmetic Operations
Perform standard calculations using the numeric keypad and operation keys.
- Addition (+): Enter the first number, press +, enter the second number, then press =.
- Subtraction (-): Enter the first number, press -, enter the second number, then press =.
- Multiplication (X): Enter the first number, press X, enter the second number, then press =.
- Division (÷): Enter the first number, press ÷, enter the second number, then press =.
- Clear (C): Clears the current entry.
- Clear All (CA): Clears all entries and resets the calculator.
3.2. Special Functions
The FR-2650TM includes specialized functions for business and financial calculations.
- Cost/Sell/Margin (COST, SELL, MAR): These keys allow for quick calculation of cost, selling price, or profit margin when two of the three values are known.
- Tax Calculation (TAX+, TAX-): Set a tax rate to easily add or subtract tax from a value. Refer to the full PDF manual for setting the tax rate.
- Memory Functions (M+, M-, MR, MC):
- M+: Adds the displayed value to memory.
- M-: Subtracts the displayed value from memory.
- MR: Recalls the value stored in memory.
- MC: Clears the memory.
- Grand Total (G*): Accumulates the results of calculations for a grand total.
3.3. Printing Functions
The calculator prints calculations on a paper roll for a permanent record.
- Print Mode: The calculator automatically prints entries and results when in print mode.
- 2-Color Printing: The FR-2650TM supports 2-color printing (black and red) to differentiate positive and negative numbers or specific entries.
- Paper Feed (FEED): Press this button to advance the paper roll without performing a calculation.
4. Maintenance
4.1. Cleaning
To maintain the calculator's appearance and functionality:
- Wipe the exterior with a soft, dry cloth.
- For stubborn dirt, use a cloth lightly dampened with water and a mild detergent, then wipe dry immediately.
- Do not use abrasive cleaners, solvents, or alcohol, as these can damage the casing and display.
4.2. Paper Roll Replacement
Replace the paper roll when it runs out or the print becomes faint. Follow the instructions in Section 2.3.
4.3. Ink Roller Replacement
If the print becomes faint or incomplete, the ink roller may need replacement. Refer to the full PDF user manual for detailed instructions on replacing the ink roller.
5. Troubleshooting
If you encounter issues with your calculator, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Display is blank or dim. | No power, low batteries, or AC adapter not connected. | Ensure AC adapter is securely plugged in, or replace batteries. |
| Printer is not printing. | No paper, paper jammed, or ink roller needs replacement. | Install new paper roll, clear any paper jams, or replace ink roller. |
| Incorrect calculation results. | Incorrect input, memory not cleared, or settings incorrect. | Double-check input, press CA to clear all, verify tax rate or other settings. |
6. Specifications
Key specifications for the Casio FR-2650TM Professional Desktop Printing Calculator:
- Display: Digitron display
- Printing Speed: 3.5 lines/minute
- Printing Type: 2-Color (Black/Red)
- Dimensions (H x W x L): Approximately 4.3 x 8.25 x 15 inches (10.9 x 21 x 38.1 cm)
- Item Weight: Approximately 3.7 pounds (1.68 kg)
- Power Source: AC Adapter / Battery Powered
- Material Type: Plastic
- Color: Grey
7. Warranty and Support
Casio products are manufactured to high quality standards and are backed by a limited warranty. For specific warranty terms and conditions, please refer to the warranty card included with your product or visit the official Casio website.
For further assistance, detailed operational guides, or troubleshooting not covered in this manual, please refer to the official PDF user manual:
