Olivetti Logos 904T Printing Calculator User Manual

1. Introduction

Thank you for choosing the Olivetti Logos 904T Printing Calculator. This manual provides essential information for the proper setup, operation, maintenance, and troubleshooting of your device. Please read this manual thoroughly before using the calculator to ensure optimal performance and longevity.

Image 1.1: The Olivetti Logos 904T Printing Calculator. This image shows the calculator's main body, keypad, display, and integrated printer mechanism.

2. Safety Information

To prevent damage to your calculator or injury to yourself, please observe the following safety precautions:

• Do not expose the calculator to water or excessive moisture.
• Avoid extreme temperatures, direct sunlight, or dusty environments.
• Do not attempt to disassemble or modify the calculator. Refer all servicing to qualified personnel.
• Use only the specified battery type and ensure correct polarity during installation.
• Keep out of reach of small children.
• Dispose of used batteries and ink ribbons according to local regulations.

3. Package Contents

Verify that all items are present in the package:

• Olivetti Logos 904T Printing Calculator
• User Manual (this document)
• One A battery (required for operation)
• One paper roll (pre-installed or separate)
• One ink ribbon (pre-installed or separate)

4. Setup

4.1. Battery Installation

1. Ensure the calculator is turned off.
2. Locate the battery compartment cover on the underside of the calculator.
3. Slide or unclip the cover to open the compartment.
4. Insert one 'A' type battery, ensuring the correct polarity (+/-) as indicated inside the compartment.
5. Replace the battery compartment cover securely.

4.2. Paper Roll Installation

1. Open the printer cover, usually located at the top rear of the calculator.
2. Place the new paper roll into the designated holder, ensuring the paper feeds from the bottom of the roll.
3. Feed the leading edge of the paper into the printer mechanism slot until it emerges from the front.
4. Close the printer cover.

4.3. Ink Ribbon Installation

If your ink ribbon is not pre-installed or needs replacement:

1. Open the printer cover as described for paper roll installation.
2. Carefully remove the old ink ribbon cartridge if present.
3. Insert the new ink ribbon cartridge, ensuring it clicks into place and the ribbon is correctly threaded through the printer head guides.
4. Close the printer cover.

5. Operating Instructions

5.1. Power On/Off

• To turn on the calculator, press the ON/C or ON button.
• To turn off the calculator, press the OFF button, or it may power off automatically after a period of inactivity.

5.2. Basic Calculations

Enter numbers using the numeric keypad. Use the following keys for basic arithmetic operations:

• +: Addition
• -: Subtraction
• x: Multiplication
• ÷: Division
• =: Equals (to display result)
• C/CE: Clear Entry / Clear All

5.3. Printing Functions

The Logos 904T features a printing mechanism to record your calculations. The printer uses tape with ink.

• Print Mode Selector: Locate the switch or button to enable/disable printing. Common settings include:
  • PRINT ON: All entries and results are printed.
  • PRINT OFF: Calculations are performed, but nothing is printed.
  • ITEM COUNT: May print only totals or specific entries.
• Ensure paper and ink ribbon are correctly installed for printing functionality.

5.4. Financial and Business Functions

As a financial and business calculator, the Logos 904T includes specialized functions. Refer to the key labels for specific operations such as:

• TAX+/-: Tax calculation functions.
• COST/SELL/MARGIN: Business profit calculations.
• MU: Mark-up calculations.
• GT: Grand Total.
• %: Percentage calculations.

For detailed instructions on these advanced functions, consult the specific key legends and any supplementary guides provided with your calculator.

5.5. Display Features

The calculator features a VFD (Vacuum Fluorescent Display) for clear visibility of numbers and symbols. The display size is approximately 75mm, providing ample space for numerical output.

6. Maintenance

6.1. Cleaning

To clean the calculator, use a soft, dry cloth. For stubborn dirt, slightly dampen the cloth with water or a mild, non-abrasive cleaner. Do not use harsh chemicals or solvents. Avoid spraying liquids directly onto the calculator.

6.2. Battery Replacement

When the display dims or the calculator functions erratically, it may be time to replace the battery. Follow the steps in Section 4.1. Battery Installation. Always replace with a fresh 'A' type battery.

6.3. Paper Roll Replacement

When the paper roll runs out, replace it by following the steps in Section 4.2. Paper Roll Installation. Ensure you use paper rolls of the correct size for the Logos 904T.

6.4. Ink Ribbon Replacement

If printouts become faint or illegible, the ink ribbon may need replacement. Follow the steps in Section 4.3. Ink Ribbon Installation. Use only genuine Olivetti replacement ink ribbons for best results.

7. Troubleshooting

If you encounter issues with your Olivetti Logos 904T, refer to the following common problems and solutions:

• Calculator does not turn on:
  • Check if the battery is correctly installed and not depleted. Replace if necessary.
• Display is dim or blank:
  • Replace the battery.
• Printer is not printing:
  • Ensure the print mode is set to 'ON'.
  • Check if the paper roll is correctly installed and not empty.
  • Verify that the ink ribbon is correctly installed and not depleted.
• Printouts are faint or unclear:
  • Replace the ink ribbon.
• Incorrect calculation results:
  • Ensure you are using the correct function keys and inputting numbers accurately.
  • Clear all previous calculations using the C/CE button.

If the problem persists after trying these solutions, please contact customer support.

8. Specifications

9. Warranty and Support

The Olivetti Logos 904T Printing Calculator comes with a standard manufacturer's warranty. Please refer to the warranty card included with your purchase for specific terms and conditions, including warranty duration and coverage details.

For technical support, service, or inquiries regarding your product, please contact Olivetti customer service through their official website or the contact information provided in your warranty documentation.