Bixolon SRP-350II Monochrome Desktop Direct Thermal Receipt Printer User Manual

1. Product Overview

The Bixolon SRP-350II is a monochrome desktop direct thermal receipt printer designed for efficient and reliable point-of-sale (POS) operations. It utilizes direct thermal printing technology, eliminating the need for ink cartridges, resulting in quieter operation, faster print speeds, and reduced energy consumption compared to traditional dot-matrix printers. This printer is suitable for printing receipts, barcode labels, and other media up to 3 inches wide.

An image showing the Bixolon SRP-350II monochrome desktop direct thermal receipt printer, its power adapter, and power cables. The printer is black with a power switch on the side and indicator lights on the top panel. The power adapter and cables are also black.

2. Setup Guide

2.1 Unpacking and Contents Check

Carefully remove all components from the packaging. Verify that the following items are present:

• Bixolon SRP-350II Receipt Printer
• Power Adapter
• Power Cord
• Receipt Paper Roll (starter roll)

2.2 Connecting the Power

1. Ensure the printer's power switch is in the OFF (O) position.
2. Connect the power cord to the power adapter.
3. Plug the power adapter's output connector into the power input port on the back of the printer.
4. Plug the power cord into a standard electrical outlet.

2.3 Connecting the Data Cable (Serial)

The SRP-350II features a serial interface for connectivity.

1. Locate the serial port on the back of the printer.
2. Connect a compatible serial cable (sold separately) from your host device (e.g., computer, POS system) to the printer's serial port.
3. Secure the cable connections if necessary.

2.4 Loading Receipt Paper

1. Open the paper roll cover by lifting the latch or pressing the release button.
2. Insert the new paper roll into the paper compartment, ensuring the paper feeds from the bottom of the roll.
3. Pull a small amount of paper out past the cutter.
4. Close the paper roll cover firmly until it clicks into place.

3. Operating Instructions

3.1 Powering On/Off

• To power on: Flip the power switch on the side of the printer to the ON (I) position. The Power indicator light should illuminate.
• To power off: Flip the power switch to the OFF (O) position.

3.2 Indicator Lights

The printer features several indicator lights on its top panel:

• Power: Indicates the printer is powered on.
• Error: Illuminates or flashes to indicate a printer error (e.g., paper out, cover open, print head overheating). Refer to the Troubleshooting section for details.
• Paper: Illuminates when the paper roll is low or out.

3.3 Feed Button

The Feed button is located on the top panel. Pressing this button will advance the paper by one line. Holding it down will continuously feed paper.

3.4 Printing

Once the printer is powered on and connected to your host device, it will receive print commands from your POS software or application. Ensure your software is configured to use the correct printer model and serial port settings.

4. Maintenance

Regular maintenance helps ensure optimal performance and extends the life of your printer.

4.1 Cleaning the Print Head

The print head should be cleaned periodically, especially if print quality degrades or after changing many paper rolls.

1. Turn off the printer and disconnect the power cord.
2. Open the paper roll cover.
3. Using a cotton swab lightly moistened with isopropyl alcohol, gently wipe the thermal elements of the print head. Avoid touching the print head with bare hands.
4. Allow the print head to dry completely before closing the cover and reconnecting power.

4.2 Cleaning the Platen Roller

The platen roller helps feed the paper smoothly. Clean it if paper jams occur frequently or if paper feeding becomes inconsistent.

1. Turn off the printer and disconnect the power cord.
2. Open the paper roll cover.
3. Using a cotton swab lightly moistened with isopropyl alcohol, gently clean the surface of the rubber platen roller.
4. Rotate the roller manually to clean the entire surface.
5. Allow it to dry completely before closing the cover and reconnecting power.

4.3 General Cleaning

Wipe the exterior of the printer with a soft, damp cloth. Do not use abrasive cleaners or solvents.

5. Troubleshooting

This section provides solutions to common issues you may encounter with your SRP-350II printer.

5.1 No Power

• Ensure the power cord is securely connected to the printer, power adapter, and electrical outlet.
• Verify the power switch is in the ON (I) position.
• Test the electrical outlet with another device to confirm it is functional.

5.2 No Print Output

• Check if the printer is powered on and the Power indicator light is illuminated.
• Ensure the serial data cable is securely connected to both the printer and the host device.
• Verify that the paper roll is loaded correctly and there is sufficient paper. The Paper indicator should not be lit.
• Confirm that your POS software or application is sending print commands to the correct printer and port.
• Check for any error lights.

5.3 Paper Jam

• Turn off the printer.
• Open the paper roll cover.
• Carefully remove any jammed paper. Avoid tearing the paper inside the mechanism.
• Ensure the paper path is clear before reloading the paper roll and closing the cover.

5.4 Poor Print Quality

• The paper roll may be old or of poor quality. Replace it with a new, high-quality thermal paper roll.
• Clean the print head as described in the Maintenance section.
• Ensure the paper roll is inserted correctly, with the thermal side facing the print head.

6. Specifications

7. Warranty and Support

For information regarding the product warranty, please refer to the documentation provided at the time of purchase or contact Bixolon customer support directly. Bixolon manufactures point-of-sale (POS) printers and related accessories.

For technical assistance or further inquiries, please visit the official Bixolon website or contact their authorized service centers.