SEWOO LK-P21 User manual

P21B ENG Rev. F 01 / 2021
󾖴󾖼󾖺󾖴󾖼
28-6, Gajangsaneopdong-ro, Osan-si, Gyeonggi-do ,18103, Republic of Korea
TEL [phone] / FAX [phone] / http://www.miniprinter.com

All speci󽗉cations are subject to change without notice
󾖴
󾖴󾖾󾖴󾖻
USER’S MANUAL

󾖴󾖴󾖴󾖴󾖴󾖴󾖴󾖴󾖴󾖼
󾖴󾖴󾖴󾖴󾖴󾖴󾖴󾖼
1) This device may not cause harmful interference, and
2) This device must accept any interference received, including 
interference that may cause undesired operation.
󾖴
19700 S Vermont Ave Ste 200 Torrance, CA 90502 | USA
[email protected]
󾖴
26188 Edewecht, Holljestr.9 | Germany
[email protected]om
󾖴
Paseo de la Reforma No. 265 Piso 2.O󽗉cina SBC. Col.
Cuauhtémoc, C.P. 06500 Ciudad de Mexico | Mexico
[email protected]
󾖴󾖴
Room 902, No. 7, Lane 118, Xiaojishan Road, Sheshan Town, 
Songjiang District, Shanghai | China
[email protected]

󾖴󾖴󾖴󾖴󾖸󾖴󾖴
󾖴󾖴󾖴󾖴󾖴󾖴󾖴󾖴󾖴
󾖴󾖹
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 o󽗋ce, your household waste disposal service
or the shop where you purchased the product.

Table of Contents
1. Safety Precautions 2
2. Unpacking 4
3. Product Overview 5
4. Usage and Installation 6
4-1. Control Panel Usage 6
4-2. Battery Installation 7
4-3. Charging Battery 8
4-4. Charging Cradle (Optional) 9
4-5. Car Charger Usage (Optional) 10
4-6. Battery Removal 11
4-7. Belt Clip Usage 12
4-8. Paper Roll Installation 13
4-9. Leather Case Usage (Optional) 14
4-10. Self Test 15

4-11. MSR Usage (Optional) 17
5. Peripheral Connection 18
5-1. Bluetooth Connection (Optional) 18
5-2. Interface Cable Connection 19
6. Printer Speci󽗉cation 20
7. Certi󽗉cation 22
8. Utilities 24
9. S/W 25

2
1. 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 Must follow
Do not disassemble
Unplug the power from the
outlet
Grounding to prevent
electric shock
Do not handle the product with
wet hands

Failure to follow these instructions could result in 󽗉re, electric shock,
other injuries, or property damage.
Do not pull or
touch the power
plug with wet
hands.
Potential risk of
electric shock or 󽗉re
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 󽗉re
Do not overload
an electrical
outlet.
Potential risk of
electric shock or 󽗉re
If a power plug is
broken or a plug
is cut or worn, do
not use it.
Potential risk of
electric shock or 󽗉re

3

Failure to follow these instructions could result in 󽗉re, electric shock,
other injuries, or property damage.
Do not unplug the
power cable to turn
o󽗈 the product.
Turn o󽗈 the power
using the power
button
Do not disassemble,
repair or modify the
product.
Potential risk of
malfunction, electric
shock, or 󽗉re. When
the product needs to
be repaired, please
contact your reseller

Failure to follow these instructions could result in 󽗉re, electric shock, 
other injuries, or property damage.
Do not install
the product on
an unstable or
inclined surface.
May cause
damage or injury

If the product
needs to be
repaired, please
contact your
reseller.
Potential risk of 󽗉re
or unit malfunction
Keep product
away from the
water and other
material.
Potential risk of 󽗉re
or unit malfunction
Avoid excessive
shock or drops.
Potential risk of
󽗉re or property
damage

4
2. Unpacking

Printer Battery Belt Clip
Charger USB Cable Serial Cable
Roll Paper CD Quick Manual

Battery Cradle Car Adapter Leather Case Shoulder Strap

5
3. Product overview

Open Button
SERIAL
USB
Power switch
Paper Feed Button

DC Power
Belt Clip Hole Battery

6
4. Usage and Installation

  
Power
Button

-This button is used to turn the printer on and o󽗈.

-When the printer is o󽗈, 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 o󽗈.
Paper
Feed
Button

-This button can be used to manually feed the paper.

-Additionally, this button is also used to initiate self-
tests and Hexadecimal Dumping.
01
Refer to the Self Test section of this manual for
information regarding self-tests.
02 Refer to the Note in Self Test section of this manual
for information regarding Hexadecimal Dumping.
Battery
Status
Lamp

-If the Batt LED is lit, the battery is fully charged.

-If you can hear a beeping sound and LED light is
turned o󽗈, the battery is at the lowest level.

-If the battery is not charged at all, the printer turns
o󽗈 automatically.
Error
Lamp

-If the red light is turned on, there is no paper or the
paper cover is open.

7

Hook
󾖴 Align battery hook as shown in the picture.
󾖴 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. (Battery charger or Cradle can be used to charge)

8

󾖴 Make sure the printer is turned o󽗈.
󾖴 After opening the DC JACK cover, connect the DC JACK to the printer.
󾖴 Plug the power cord into the electrical outlet.
󾖴󾖴󾖴
  󾖴
Charging Lamp Red Green
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 o󽗈.
03 The printer does not work when only connected to the charger.
04 The battery needs to be installed to operate the printer.
05 While charging, do not turn on the power.
06 Do not operate the printer while charging the battery.
07 Do not connect the charger while the printer is operating.

9
 Optional
Lamp
DC Jack
v
󾖴 Insert the battery into the battery charger as shown above.
󾖴 Connect the DC JACK to the electrical outlet.
󾖴 Plug the power cord into the electrical outlet.
󾖴 Once the charging is completed, remove the battery from the charger.
󾖴󾖴󾖴
  󾖴
Charging Lamp Red Green
NOTE
In the case the battery is not inserted properly, the red LED will blink. Remove and
reinsert the battery.

10
 Optional
Printer
Battery holder
Connect the car charger into the printer or battery cradle.
 12 ~ 24V
 8.4V 0.8 ~ 1.2A
NOTE
Only use the car charger included with the printer.

11
1
2

180˚
Rotate the Belt clip 180 degrees so it points upward.
After 󽗊ipping the belt clip up, remove the battery as shown above.

12
1
2

Insert the belt clip screw into the hole of the belt clip.
Tighten the screw with a screwdriver as shown in the picture above.

13
1 2
3 4

Press the PUSH button to open the
paper cover.
Insert the paper in the correct direction.
See the image above.
Pull a short length of paper out of the
printer and close the cover.
Tear o󽗈 the additional paper using tear
bar.

14
1 2
3 4
 Optional
Open the leather case. Place the printer into the leather case.
Close the cover and press down on the
Velcro.
Fasten to the belt by using the clip at the
rear of the leather case.

15
1 2
3 4

Turn o󽗈 the power by pressing the
power button for approximately 3
seconds.
While you are holding the FEED button,
press the power button.
NOTE
01 To print ASCII pattern additionally,
press the Feed button once more.
02 After printing ASCII pattern,
the self test will be 󽗉nished
automatically.
03 If the Feed button is not pressed
to print ASCII pattern, self test will
be 󽗉nished automatically after 3
seconds.
The self-test will print.