Instruction Manual for Sewoo models including: LK-P400, LK-P400 Mobile Printer, LK-P400, Mobile Printer, Printer

Aroot Co., Ltd. - miniprinter.com

Information to User; Caution: the user that changes or modifications not expressly approved by the Aroot Co., Ltd. responsible for compliance could void the user's authority to operate the equipment.


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SEWOO LK-P400 USERS MANUAL ENG 20240502
Aroot Co., Ltd.
28-6, Gajangsaneopdong-ro, Osan-si, Gyeonggi-do ,18103, Republic of Korea TEL +82-31-8077-5000 / FAX +82-31-624-5310 / http://www.miniprinter.com
P400 ENG Rev. 12/2023

MODEL : LK-P400
MOBILE PRINTER(Wi-Fi & Bluetooth)
All specifications are subject to change without notice

Information to User;
Caution: the user that changes or modifications not expressly approved by the Aroot Co., Ltd. responsible for compliance could void the user's authority to operate the equipment.
NOTE: This equipment has been tested and found to comply with the limits for a Class B  digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation.
If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
- Reorient or relocate the receiving antenna. - Increase the separation between the equipment and receiver. - Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected. - Consult the dealer or an experienced radio/TV technician for help.
Responsible Party; The responsible party for Supplier's Declaration of Conformity must be located within the United States, so you have to include following information in manual.
Company name : Aroot Co., Ltd. (Manager : Vic Barczyk) Address : 19700 S. Vermont Ave. STE 200, Torrance, CA 90502 | USA TEL / FAX No : (TEL) +310-561-8030 / (FAX) +82-31-459-8880 Homepage : http://www.miniprinter.com
Use of the Made for Apple badge means that an accessory has been designed to connect specifically to the Apple product(s) identified in the badge, and has been certified by the developer to meet Apple performance standards. Apple is not responsible for the operation of this device or its compliance with safety and regulatory standards.

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.
The operation of this equipment is subject to the following two conditions: (1) this equipment or device may not cause harmful interference and (2) this equipment or device must accept any interference, including that which may cause its unwanted operation.
Risk of explosion if battery is replaced by an incorrectly type. Dispose of used battery according to the local disposal instructions.
- replacement of a battery with anincorrect type that can defeat a safeguard  (for example, in the case of same lithium battery types)
- disposal ofa battery into fire or a hot oven, ormechanically crushing or cutting of a battery,  that can result in an explosion;
- leaving a battery in an extremely high temperature surrounding environment that can result in  an explosion or the leakage of flammable liquid or gas ; and
- a battery subjected to extrmely low air pressure that may result in an explosion or the leakage of flammable liquid or gas.
Risque d'explosion si la batterie est remplacée par un type incorrect. Jetez la batterie usée selon les instructions locales.
- remplacement d'une batterie par un type incorrect qui peut faire échouer une sauvegarde  (par exemple, dans le cas des mêmes types de batteries au lithium)
- la mise au rebut d'une batterie dans un feu ou un four chaud, ou l'écrasement ou la coupure mécanique d'une batterie, qui peut provoquer une explosion;
- laisser une batterie dans un environnement environnant à température extrêmement élevée pouvant entraîner une explosion ou une fuite de liquide ou de gaz inflammable; et
- une batterie soumise à une pression d'air extrêmement basse qui peut provoquer une explosion ou une fuite de liquide ou de gaz inflammable.
Disposal of Old Electrical&Electronic Equipment(Applicable in the European Union and other European countries with separate collection systems) This symbol on the product or on 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.

Safety Precautions

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

Prohibition
Do not disassemble Grounding to prevent electric shock

Must follow
Unplug the power from the outlet
Do not handle the product with wet hands

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

Do not pull or touch the power plug with wet hands.
Potential risk of electric shock or fire

Do not bend the wire and do not allow the wire to be pinched or crushed by heavy objects.
Potential risk of electric shock or fire

Do not overload an electrical outlet.
Potential risk of electric shock or fire

If a power plug is broken or a plug is cut or worn, do not use it.
Potential risk of electric shock or fire

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

Do not unplug the power cable to turn off the product.
Turn off the power using the power button

Do not disassemble, repair or modify the product.
Potential risk of malfunction, electric shock, or fire. When the product needs to be repaired, please contact your reseller

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

Do not install the product on an unstable or inclined surface.
May cause damage or injury

Dealer

If the product needs to be repaired, please contact your reseller.
Potential risk of fire or unit malfunction

Keep product away from the water and other material.
Potential risk of fire or unit malfunction

Avoid excessive shock or drops.
Potential risk of fire or property damage

Table of Contents

Product Overview

1. Unpacking

2

2. Product overview

3

3. Control Panel Usage

4

Set Up

4. Paper Installation

5

5. Battery

6

5-1. Battery Installation

6

5-2. Battery Removal

7

5-3. Battery Charging

8

5-4. Charging Cradle(optioanl)

9

6. Belt Strap

10

7. Self Test

11

Peripheral Connection

8. Peripheral Connection

13

8-1. Bluetooth Connection

13

8-2. Wi-Fi Connection

13

8-3. NFC Connection

14

8-4. Interface Cable Connection

15

Maintenance

9. Cleaning the Printer

16

9-1. Print-Head Cleaning

16

9-2. Platen Roller Cleaning

17

10. JAM Error

18

Spectification

11. Black Mark

19

12. Gap

20

13. Printer Specification

21

14. Utilities

23

15. S/W

24

1. Unpacking
Standard

Printer

Battery

Charger

USB Cable

Quick Manual

Roll Paper

Optional

Belt Strap

Cleaning Pen

Large Battery Car Charger
2

Charging Cradle Shoulder Strap

2. Product overview

Front

COVER OPEN Button

POWER Button

Paper FEED Button
Rear
Strap Bracket Battery

USB DC POWER

3

3. Control Panel Usage

Button

Name
Power Button

Function
- This button is used to turn the printer on and off. - When the printer is off, press this button for approximately 3 seconds and the printer will power on. - When you press this button while the printer is powered on, the printer will turn off.

Up Button - Selects the highlighted menu option.

Menu Enter Button
Paper Feed Button

- Moves up through menu options.
- This button can be used to manually feed the paper. - Additionally, this button is also used to initiate self-tests and Hexadecimal Dumping.  Refer to 11 - Use ENTER to enter the menu.

4

4. Paper Installation
CAUTION Make sure to be careful of the HOT head
COVER OPEN button

Paper guide

Press the COVER OPEN button up to open the Place the paper roll as shown. Make sure

Paper cover. You can set the width of paper the paper is placed in the right direction.

guide by turning the knob with your finger. 1 2

CAUTION

34

CAUTION

Please make sure you hear the

If the cover is not shut down completely,

closing sound of the upper cover.

the printer may not work properly.

Pull a short length of paper out of the printer and close the cover.

Please tear the paper down.

5

5. Battery
5-1. Battery Installation

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

HOOK 1 Align battery hook as shown in the picture. 2 Push the battery into the printer until it locks in place.
NOTE As the battery is not charged at the time of your purchase, charge the  battery prior to using the printer.
6

5-2. Battery Removal
REMOVE
Remove the battery as shown. 1 Press up on the battery handle and lift it up. 2 Remove the battery.
7

5-3. Battery Charging
Lamp
1 Make sure the printer is turned off. 2 After opening the DC JACK cover, connect the DC JACK to the printer. 3 Plug the power cord into the electrical outlet.
NOTE 01 If the charger provided by the manufacturer is not used, the printer can be
damaged, and the manufacturer is not liable for the consequential damage. 02 Before removing the battery, make sure that power is turned off. 03 The printer does not work when only connected to the charger. 04 While charging, do not turn on the power. 05 Do not operate the printer while charging the battery.
8

5-4. Charging Cradle Optional
Lamp

1 Insert the battery into the battery charger as shown above. 2 Connect the DC JACK to the electrical outlet. 3 Plug the power cord into the electrical outlet. 4 Once the charging is completed, remove the battery from the charger.

The charging status LED Status
Charging Lamp

charging Red

charging complete Green

NOTE
In the case the battery is not inserted properly, the red LED will blink.  Remove and reinsert the battery.

9

6. Belt Strap

Prepare the belt strap.

Put the strap into the strap bracket hole as shown.
12 34

Turn the strap and printer over and put the strap into the hook as shown.

Adjust the strap length for the user's convenience.

10

7. Self Test

Turn off the power by pressing the power button for approximately  3 seconds.

While you are holding the FEED button, press the power button.
12 3

NOTE
01 To enter hex dump mode, press the FEED button once more.
02 If the FEED button is not pressed, the self-test will automatically finish after 3 seconds.

The self-test will print.

11

Self-Test Printout Sample

F/W Version: v2.74_STD GAP(Adj) : 80(-10,270) BM Lower(Adj) : 320(127,240) BM Lower Label Length : 0,0mm BM Upper(Adj) : 320(159,330) BM Upper Label Length : 558,69mm Battery : 8.0v [30 C] Sleep Timeout : 1 min Deep Sleep Timeout : 2 min Power off Timeout : 0 min H/W Version : v1,00
Emulation: ESC/POS codepage 437 Print Density: Normal(0) Print Speed: 5[IPS] Liner less: Disabled Passesword: Disabled
Version 2.0 Full speed compliant Product String: LK-P400
Version : v1.0 Device Name : SW_0A9B Mode : SPP_IAP_MODE Numberic comparison : Disabled BT scan : Enabled Auto connection : Enabled BLE : Disabled Address : 40:19:20:50:0a:9b
401920111725
SSID : LK_P400_P2P MAC : 42:19:20:50:8a:9a Operating Mode : SoftAP IP : 192.168.100.1 SUBNET : 255.255.255.0 GATEWAY : 192.168.100.1 Host name : MobilePrinter DHCP : Enabled
000000000000
******************
******************

Upon initial installation or for troubleshooting, you can run the diagnostic test to get information about: - Firmware version, emulation,
codepage, sensor settings,  interface settings, etc.
If no issues are found with the diagnostic test, examine other  devices and software. The diagnostic test is working independently of devices and software.
 Motor protection from being overheated To prevent the motor from overheating, stop the printer for at least 30 seconds after continuously printing 1.5 meters.

12

8. Peripheral Connection
This product can communicate with other devices via Bluetooth, Wi-Fi, or a communication cable.
8-1. Bluetooth Connection
1 The Printer can be connected to devices equipped with Bluetooth communication capabilities (PDAs, PCs, etc.).
2 Use the Bluetooth connection function supported by your device to connect to the printer. NOTE
- This model supports NUMERIC COMPARISON function. - Please refer to the configuration manual for details.
8-2. Wi-Fi Connection
1 The Printer can be connected to devices equipped with Wi-Fi communication capabilities (PDAs, PCs, etc.).
2 Use the Wi-Fi connection function supported by the device to connect to the printer. NOTE
- Please refer to the CONFIGURATION MANUAL for details.
13

8-3. NFC Connection
The printer can be connected to devices equipped with NFC communication capabilities.
Use the NFC connection function supported by the device to connect to the printer. NOTE
- Please refer to the CONFIGURATION MANUAL for details. - NFC is only compatible with Bluetooth.
14

8-4. Interface Cable Connection
Cover USB 1 Flip over the connector cover and connect USB cable to the printer connector. NOTE Only use cables included with the printer. (USB) 2 Connect the interface cable to the USB port of the device (PDA, PC, etc.).
15

9. Cleaning the Printer
If the interior of the printer is dusty, printing quality can be reduced. In this case, follow the instructions below to clean the printer.
NOTE 01 Make sure to turn the printer power off prior to cleaning. 02 Regarding printhead cleaning, as the printhead gets very hot during printing,
turn off the printer power and wait approximately 10 minutes before cleaning. 03 When cleaning the printhead, take care not to touch the heated portion of the
printhead. The printhead can be damaged by static electricity. 04 Take care not to allow the printhead to become scratched and / 
or damaged in any way. 05 When using a linerless paper, clean regularly at least once after using 4~5 rolls
or a week (Cleaning cycle may vary depending on usage.)
9-1. Print-Head Cleaning
HEAD
1 Use the cleaning pen to clean the head of the printer. 2 Once the cleaning is completed, wait a few minutes before inserting the paper
roll into the printer.
16

9-2. Platen Roller Cleaning
1 Use a cleaning pen to clean the rollers. 2 Turn the platen roller with your finger to clean the entire surface. 3 When using a linerless paper, wipe the surrounding parts that touch the surface
of the paper.

Platen Roller

Frame Roller

Paper Housing

17

10. JAM Error

CAUTION Make sure to be careful of the HOT head.

When you face with a paper jam error, Please remove the paper.

please press the button up to open the

PRINTER COVER. 12 3

NOTE

NOTE

Please make sure you hear the

If the cover is not shut down completely,

closing sound of the upper cover.

the printer may not work properly.

After removing, close the cover. The printer will work normally.
18

11. Black Mark 19

12. Gap 20

13. Printer Specification

Printing Method Printing Speed Resolution
Character

ESC/POS

Barcode

CPCL

ZPL Emulation Driver / SDK Sensor

Direct Thermal
127 mm/s
203 DPI
Font A(12×24), Font B(9×17), Asian Font(KOR,JPN,CHN-GB2312,CHNBig5), Font0/1/2/4/5/6/7, Resident TTF, Downloadable TTF, FontA~H, FontGS, Residnt TTF(Font0), Font 1~8
- 1D : EAN-8, EAN-13, Code39, ITF, UPC-A, UPC-E, Codabar, Code93, Code128 - 2D : QR, PDF417
- 1D : LUPC-A(+2,+5), UPC-E(+2, +5), EAN13(+2, +5), EAN8(+2,+5),  Code39 etc. (CPCL) - 2D : QR, PDF417, MicroPDF417, Maxicode, Datamatrix, Aztec, TLC39, RSS14
- 1D : Code11, ITF, Code39, Planet, EAN-8, UPC-E, Code93, Code128 etc. (ZPLII) - 2D : QR, PDF417, MicroPDF417, Maxicode, Datamatrix, Aztec, TLC39, RSS14
ESC/POS, CPCL, ZPL Command compatible
Windows Driver(XP ~, Server2003 ~), Window CE & Mobile Driver & SDK (CE 4.2~, Mobile 5.0~), Linux Driver, Mac Driver, OPOS Driver, JavaPOS Driver, iOS SDK, Android(6.0 ~) SDK
Black mark, Paper end, Gap, Cover open

21

Type

Thermal Receipt / Label /  Linerless Label(Max. X2)

Width

50 ~ 112mm

Paper

Thickness

0.06~0.16mm

Roll Max Diameter

Max. Ø 57.5mm

Roll Core

12.5mm ± 0.5mm

Interface

Standard

USB, Wi-Fi(802.11a/b/g/n/ac) + Bluetooth Smart Ready (Bluetooth4.2+BLE + NFC Tag) Combo

Option

-

Battery Charger

Input Output

AC 100 ~ 240V, 50/60Hz 8.4 V, 800 ~ 1400 mA

Type

Li-ion

Battery

Output Charging time

7.2 V, 2500mAh / 5000mAh(Optional)
3.5Hrs Charging time (2500mAh) 5.5Hrs Charging time (5000mAh)

Size(W x L x D)

155 x 157 x 67 mm

IP

IP54 certified

Drop

2m (set only)

Weight

0.84 kg (with 2500mAh Battery)

Operation Temperature
Storage

-20 ~ 55 -30 ~ 65

Humidity

Operation Storage

10 ~ 90% 10 ~ 90%

22

14. Utilities

The following utilities and concerned manual can be found on the QR or homepage.

No.

Name

Description

This is an integrated utility that you can manage your printer with below tasks.

- Printer Configuration Settings

- Wireless-Lan Settings

- Font(Bitmap/TrueType) Download

1

PrinterGear

- Printing service

- Document management

- FW Download

- Maintenance

 Please refer to PrinterGear Manual for detailed information.

2

LabelMaker(CPCL)

This program is for label form design and designed label printing.

Android Utility It is a utility app that prints text, barcodes, images,

3 (Sewoo M_Utility) etc. through Bluetooth and Wi-Fi communication, 

(ESC/POS)

and able to printer settings.

23

15. S/W

We provides SDK, Driver, etc. as follows to respond to various S/W usage environments.

You can download this S/W from the homepage.

No

Name

Description

1

Windows Driver

This is an install program used to print a Mobile printer in Windows OS.

2

Linux Driver

This is the Cups Driver used to print a Mobile printer in the Linux environment.

This is a driver that controls Mobile printers using the

3

OPOS Driver (ESC/POS)

OPOS standard. It can be used after initial setting(Mobile Printer&MSR)

using the setting tool.

4

JavaPOS Driver (ESC/POS)

JavaPOS driver is an interface standard for POS software written in Java, and can be used in Mobile Printer when printing a receipt.

5

Mac Driver

This is the Cups Driver used to print a Mobile printer in the Mac OS environment.

Android Plugin This is a print service plug-in that allows you to print 6 (Sewoo Print Service documents, images, and web pages without installing
Plugin) (ESC/POS) additional apps.

7

Windows SDK

This is library for communication and data output with Mobile printer in Windows OS.

8

Android SDK

This is library for communication and data output with Mobile printers in Android OS.

9

iOS SDK

This is library for communication and data output with Mobile printers in iOS.

24

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References

Adobe PDF Library 17.0 Adobe InDesign 19.4 (Windows)