SEWOO SLK-CB125 Series Mini Printer User's Manual

1. Printer Features

1-1. Overview

This printer is a thermal receipt printer with automatic cut-off knife. It has the high printing quality, high speed, high stability and the like, and can be widely applied to commercial POS systems, catering industries and other occasions requiring on-site real-time printing of receipts. It can connect with other devices through Bluetooth, WiFi, serial, USB, and Ethernet interfaces, and is provided with driver programs for Windows XP/Windows 7/Windows 8/Windows 10/Windows 11/Linux, and other operating systems.

1-2. Main feature

• Automatic paper cutting.
• Low noise, high speed printing.
• It is designed with easy loading paper structure.
• Support for fixed USB port and USB virtual serial port function.
• Supports marking paper and continuous paper printing.
• Support voice broadcast function.
• Support replaying and queuing functions.
• Support print head over-temperature protection, anti-jam function.
• Support IAP online upgrade.
• Support QR Code, PDF417 format 2D barcode printing.

2. Precautions

For better safety and reliability, adhere to the following precautionary measures. Read and follow the instructions carefully before operation of the product.

Indication

WARNING
Failure to follow these instructions could result in fire, electric shock, other injuries, or property damage. ⚠️

WARNING
Failure to follow these instructions could result in fire, electric shock, other injuries, or property damage. ⚠️

CAUTION
Failure to follow these instructions could result in fire, electric shock, other injuries, or property damage. ⚠️

1. Install the printer on a stable and level surface and avoid excessive vibration and shock.
2. Do not use or store in places with excessively high temperature or humidity.
3. Connect the power adapter to a properly grounded outlet. Do not use the same outlet as an electric motor or other equipment that may cause voltage fluctuations.
4. Keep liquids and conductive materials out of the printer. If this happens, disconnect the AC power cord from the outlet.
5. Attempting to print without paper will damage the printer head and rollers.
6. Do not repair, disassemble, reassemble, or modify the printer without the manufacturer's instructions.
7. Always use the cables provided by the manufacturer.
8. High-quality paper is recommended for printer longevity and print quality.
9. Be sure to turn OFF the printer when connecting or disconnecting the power cord to an outlet.

3. List of product packing

• Quick Guide manual: 1 Pc
• Printer body: 1 Pc
• Data cable (except network interface according to interface configuration): 1 Pc
• Power adapter (including power line): 1 Set
• Thermal paper: 1 Roll

Note: Included items are subject to change without notice.

4. Product appearance

5. Button names, indicators and functions

Power LED

When this light is on, it indicates that the printer power is on, and when it is off, it indicates that the printer power is off.

Error LED ⚠️

When the printer has opened the cover, out of paper, cutter error, overheating of the print head and other errors, the light flashes.

Wireless LED ?

When Bluetooth / WIFI connection is successful, the signal light is always on.

FEED Button ▶️

Press this button to feed paper

Power Button ?️

Long press this button for 1-2 seconds to turn on / off

Self-check test

The method of self-check is as follows:

After connecting the printer, turn off its power supply, press and hold the "FEED" and meanwhile turn on the power supply. After about 2 seconds, release only the power button. About 2~8 seconds, and the printer will show the current status and its settings.

How to enter Hexadecimal method

Run self-test first. Select “Enter hexadecimal mode” on config mode menu by feed button. Press feed button five times after config mode menu is printed.

6. Installation and use

6-1. Connection of printer

A. Connect the adapter cable to printer's power interface.
B. Connect the interface cable to the back interface of the printer.
C. Connect the line of cashier box to the interface of cashier box behind the printer.

6-2. Load paper

SLK-CB125 printer accepts thermal paper up to 82.5 mm wide and has an easy-to-load design. Follow these steps to install thermal paper:

1. Open the front cover of the printer.
2. Load the thermal paper into the paper tray as shown in the following figure.
3. Pull a small piece of printing paper out the cover and close the front cover.
4. Tear off excess roll with the cutter.

7. Adjustment of paper width

1. Please adjust the Paper Guide to fit to the paper width as the direction of arrow. ➡️

2. When the paper roll is installed correctly, close the front cover and use it. ✅

8. Driver of the printer

There are two ways to drive the thermal bill printer, one is to install the driver directly with WINDOWS, and the other is to use the port to drive directly.

1. Double click "SEWOO Windows Driver.exe".
2. Select: I accept the agreement. [Screenshot of license agreement with 'I accept the agreement' checked and 'Next' button highlighted]
3. Create a shortcut on the desktop. [Screenshot of setup wizard for additional tasks with 'Create a desktop shortcut' checked]
4. Setup Completed: [Screenshot of setup completion dialog with 'Finish' button highlighted]
5. Select the correct interface port: [Screenshot of 'Install Configuration' dialog showing OS selection, interface selection, and printer series selection]
6. Select the proper printer series and click “Install Now”. [Screenshot of 'Install Configuration' dialog with printer series selected and 'Install Now' button highlighted]
7. Click "Yes" to configure the port. [Screenshot of a dialog box asking "Do you want to configure printer now?" with "Yes" highlighted]
8. Choose the detected USB00X, click apply, shown as below: [Screenshot of printer properties showing port selection with USB003 selected and 'Apply' button highlighted]
9. Select the “General” tab and then “Print Test Page": [Screenshot of printer properties with the 'General' tab selected and the 'Print Test Page' button highlighted]

9. Cleaning of printer

The print head should be cleaned if the following conditions occur:

• Print unclear
• A certain vertical column of the printed page is not clear;
• The paper feeding is noisy.

The cleaning steps of print head are as follows:

1. Turn off the power supply of the printer and open the upper cover. If there is paper, remove it;
2. If it has just finished printing, the print head should be waited to cool completely;
3. Dip soft cotton cloth in anhydrous ethanol (which should be wrung dry) to erase dust and stains on the surface of the thermal sheet of the print head;
4. After the complete volatilization of anhydrous ethanol, close the upper cover and start the machine again for printing.

Notes:

• The power supply must be turned off for the daily maintenance of the printer.
• Do not touch the surface of the print head with your hands or metal objects, and do not scratch the print head, printing rubber roller and surface of sensor with tweezers and other tools.
• Do not use organic solvents such as gasoline and acetone.
• After the complete volatilization of anhydrous ethanol, turn on the power supply to continue printing.

10. Maintenance for cutter jam

Method (1)

Press the power switch button to turn off the power supply. Then, turn it back on to initialize the printer and return the cutter to its original position. ?️

Method (2)

Slide the cover cutter and pull the cover open lever to remove the jam. Cycle the power again to return the cutter to its home position. ⚙️

Notes: Do not force to pry the flap to avoid damaging the print head and the automatic paper cutter. ⚠️

11. Printer interface

11.1. Power interface

[Diagram of Power Interface connector]

11.2. Cash-box interface

Cash-box control : 6-wire RJ-11 socket, output DC24V/1A power signal to drive the cash-box for action.

[Diagram of RJ-11 socket]

11.3. USB interface

[Diagram of USB Interface connector]

11.4. Serial interface

[Diagram of Serial Interface connector]

11.5. Ethernet interface

[Diagram of Ethernet Interface connector]

12. Specifications