SEWOO SLK-T21EB Series Receipt Printer User's Manual

Model: SLK-T21EB SERIES

Receipt Printer User's Manual

All specifications are subject to change without notice.

FCC Compliance

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:

1. This device may not cause harmful interference, and
2. This device must accept any interference received, including interference that may cause undesired operation.

Contact: Vic Barczyk, 20280 S. Vermont Ave. STE 200, Torrance, CA 90502 | USA, +310-561-8030

Disposal of Old Electrical & Electronic Equipment

This symbol on the product or its packaging indicates that this product shall not be treated as household waste. Instead, it shall be handed over to the applicable collection point for the recycling of electrical and electronics equipment. For more detailed information about recycling of this product, please contact your local city office, your household waste disposal service, or the shop where you purchased the product.

1. Parts Identifications

CONTROL PANEL: Features LED indicators to indicate printer status and switches to operate the printer.

COVER OPEN LEVER: Features LED indicators to indicate printer status and switches to operate the printer.

POWER SWITCH: Used to turn on/off power to the printer.

PRINTER COVER: Open this cover to load or replace paper.

2. Setting Up the Printer

2-1. Unpacking

Your printer box should include the following items. If any items are damaged or missing, please contact your dealer for assistance.

• The Printer
• CD
• Roll Paper
• Adapter (optional)
• Interface Cable (optional)

2-2. Connecting the Cables

You can connect the cables required for printing to the printer. They all connect to the connector panel on the back of the printer.

Connector Panel:

• CASH DRAWER CONNECTOR
• POWER CONNECTOR
• INTERFACE CONNECTOR (ETHERNET)
• INTERFACE CONNECTOR (SERIAL)
• INTERFACE CONNECTOR (USB)

Before connecting any cables, ensure that both the printer and the computer are turned off.

2-2-1. Interface Connector

9-Pin Serial:

USB "B" Type:

Ethernet: (Status LED, Link END)

This equipment is for indoor use only, and all communication wirings are limited to inside of the building.

2-2-2. Cash Drawer Connector

The printer can operate two cash drawers with a 6-pin RJ-11 modular connector. The driver is capable of supplying a maximum current of 1.0A/24VDC for 510ms or less when not printing.

CAUTION: Please make sure you hear the closing sound of the upper cover.

2-3. Loading the Roll Paper

NOTE: Be sure to use paper rolls that meet the specifications. Do not use paper rolls that have the paper glued to the core because the printer cannot detect the paper end correctly.

1. Turn off the power switch.
2. Make sure that the printer is not receiving data; otherwise, data may be lost.
3. Open the paper roll cover by pushing down the cover open button.
4. Remove the used paper roll core if there is one inside.
5. Insert new paper roll as shown.
6. Be sure to note the correct direction that the paper comes off the roll (O for correct, X for incorrect).
7. Pull out a small amount of paper, as shown. Then, close the cover.
8. Tear off the paper as shown.

CAUTION: When the paper is jammed with the cutter, the top cover might be stuck. In this case, repeat power on and off several times. If the top cover is still stuck, please follow the steps to release the papers from jamming.

1. Make sure the printer is turned off.
2. Remove the screw from the DIP switch cover. Then, take off the DIP switch cover as shown in the illustration.
3. Turn screw with drivers to a direction until paper is released from the cutter.

2-4. Adjustment of paper width

1. Please adjust the Paper Guide to fit the paper width as the direction of the arrow.
2. Tighten the screw after adjusting the Paper Guide.
3. Pull the edge of paper once the paper roll is installed correctly and close the Paper Cover.

3. Control panel and other functions

3-1. Control panel

You can control the basic paper feeding operations of the printer with the button on the control panel. The indicator lights help you to monitor the printer's status.

Control Panel: POWER, ERROR, PAPER, FEED buttons and indicators.

Button: The FEED button can be disabled by the ESC c 5 command. Press the FEED button once to advance paper one line. You can also hold down the FEED button to feed paper continuously.

3-2. Error indicators

4. Self Test

The self-test result indicates whether the printer is operating properly. You can also check the following options or status of the printer:

• Control circuit
• Printer mechanism
• Printing quality
• ROM version
• Interface setting

This test is independent of any other equipment or software.

Running the self test

1. Make sure the printer is turned off and the printer cover is closed properly before performing the self test.
2. Turn the printer on while holding the FEED button; then the self-test will start. The self-test prints the printer setting value and then prints the following, and pauses. (Error LED On)

SELECT MODE BY BUTTON:

• 1. ASCII PRINT
• 2. ECO MODE
• 3. PRINTER SETTING
• 4. HEXADUMP MODE

3. Press the FEED button consecutively (1-4):
• 1. ASCII PRINT (press the FEED button once): Printing test page constructed with ASCII code.
• 2. ECO MODE (press the FEED button twice): Set the ECO mode for saving paper and power. (Default font type, Reduce paper margin, Density)
• 3. PRINTER SETTING (press the FEED button triple time): Set the printer option. (Serial baudrate, Cutting mode, Error beep, Melody)
• 4. HEXADUMP MODE (press the FEED button quad time): Printing the HEX value received from the interface.

Note: Wait for 5-6 seconds if you want to exit. Printer performs a cutting when exiting this mode.

4. The printer is ready to receive data after finishing setting.

5. ASCII Print

ASCII PRINT is printing a test page constructed with ASCII code. You can check if the printer works properly with this. The ASCII PRINT test automatically ends and cuts the paper after printing the following:

*** Completed ***

The printer is ready to receive data as soon as it completes the ASCII PRINT.

6. ECO Mode

After entering the ECO MODE, a list of selectable ECO options will be printed. Similar to Self Test, you can press the FEED button to select an ECO option. Once the input is performed properly, the printer shows a result and stores it.

ECO MODE:

• 1. FONT SETTING
• 2. LINE SPACE SETTING
• 3. LINE FEED SETTING
• 4. BARCODE[1D] HEIGHT
• 5. DENSITY SETTING

6-1. Font

The FONT SETTING menu allows you to change the Font mapping (FONT A / FONT B). If you do not want the other side font, you can disable it.

• FONT A: 12x24
• FONT B: 9x17

FONT SETTING:

• 1. FONT A -> A / FONT B -> B
• 2. FONT A -> B / FONT B -> B
• 3. FONT A -> A / FONT B -> A
• 4. FONT A -> B / FONT B -> A

6-2. Paper Reduce

The Reduce menu (Line space, Line feed, barcode[1D] height) was developed for paper saving.

• Line space: “Line space” means the amount of feed when you intentionally generate newlines.
• Line feed: “Line feed” means the amount of feed when there is an automatic line break.
• Barcode Height: “Barcode Height” means the height of the barcode when creating a one-dimensional barcode.

LINE SPACE SETTING:

• 01 NORMAL
• 02 REDUCE 50%
• 03 REDUCE 75%
• 04 REDUCE 90%

LINE FEED SETTING:

• 01 NORMAL
• 02 REDUCE 50%
• 03 REDUCE 75%
• 04 REDUCE 90%

1D BARCODE HEIGHT SETTING:

• 01 NORMAL
• 02 REDUCE 50%
• 03 REDUCE 75%
• 04 REDUCE 90%

6-3. Density

Adjust the print density to save the power consumed by the printer.

SELECT DENSITY:

• 01 NORMAL
• 02 LOW
• 03 DARK

7. Printer Setting

Change the printer settings. The options below can also be changed via the Memory Saver.

PRINTER SETTING:

• 01 SELECT BAUDRATE
• 02 SELECT CUTTING MODE
• 03 SELECT ERROR BEEP OPTION
• 04 SELECT MELODY OPTION

7-1. Baudrate

After entering the BAUDRATE MODE, a list of selectable BPS will be printed. Similar to Self Test, you can press the FEED button to select a BAUDRATE. Once the input is performed properly, the printer shows a result and stores it. The printer is ready to receive data as soon as it completes the SELECT BAUDRATE MODE.

SELECT BAUDRATE:

• 01 4800bps
• 02 9600bps
• 03 19200bps
• 04 38400bps
• 05 57600bps
• 06 115200bps

7-2. Cutter

Set cutter mode.

SELECT CUTTING MODE:

• 01 PARTIAL CUT
• 02 FULL CUT

7-3. Error Beep

If the cover is open or there is no paper, the error beep function is activated. This option allows you to enable/disable the error beep.

SELECT ERROR BEEP OPTION:

• 01 BEEP ON
• 02 BEEP OFF

7-4. Melody

To DK Port (Cash), Melody box, or external buzzer can be connected. You can activate it from the Melody Setting menu, and the melody will operate after the cutting operation.

• Melody Box: Melody is fixed and volume can be adjusted.
• External Buzzer: 3 types of melody are output according to the Melody Type setting, and volume control is not included.

SELECT MELODY OPTION:

• 01 MELODY SETTING
• 02 SELECT MELODY TYPE

MELODY SETTING:

• 01 MELODY ON AFTER CUTTING
• 02 MELODY OFF

SELECT MELODY TYPE:

• 01 MELODY- I
• 02 MELODY-II
• 03 MELODY-III

8. Hexadecimal Dump

This feature allows experienced users to see exactly what data is coming to the printer. This can be useful in finding software problems. When you use the hex dump function, the printer prints all commands and other data in hexadecimal format along with a guide section to help you find specific commands.

To use the hex dump feature, follow these steps:

1. Please turn the printer off.
2. Please turn the printer on while pressing the “Feed” button.
3. Press the FEED button three times when the Self Test is printed.
4. The printer has now entered Hexa dump mode.
5. Run any software program that sends data to the printer. The printer prints “Hexadecimal printing mode...” and then all the codes it receives in a two-column format. The first column contains the hexadecimal codes, and the second column gives the ASCII characters that correspond to the codes.

Hecadecimal Dump Example:

1B 21 00 1B 26 02 40 40 .!..& . @ @

1B 25 01 1B 63 34 00 1B .%..c4..

41 42 43 44 45 46 47 48 ABCDEFGH

A period (.) is printed for each code that has no ASCII equivalent.

6. Turn off the printer.
7. Turn on the printer.

9. Printer Cleaning

If the interior of the printer is dusty, printing quality can be lowered. In this case, follow the instructions below to clean the printer.

NOTE:

1. Make sure to turn the printer power off prior to cleaning.
2. Regarding print head cleaning, as the print head is very hot during printing, turn off the printer power and wait approximately 10 minutes before starting.
3. When cleaning the print head, take care not to touch the heated part of the print head. The print head is subject to damage by static electricity.
4. Take care not to allow the print head to become scratched and/or damaged in any way.

1. Use an applicator swab moistened with an alcohol solution to clean the print head and remove any dusts.
2. Once the cleaning is completed, insert paper roll into the printer a few minutes later and close the printer cover.

Preventing Overheating: To prevent the motor from overheating, continuous operation of the printer should be 1.5 m or less in print length. Set the pause time for 30 seconds or more than it.

10. Specifications

QR Code for patent information is present.

11. Command List