Citizen CT-S281 Series User manual

LINE THERMAL PRINTER
MODEL CT-S281
User’s Manual

This printer conforms to the following Standards:
The Low Voltage Directive 2006/95/EC, the EMC Directive 2004/108/EC, the RoHS
Directive 2002/95/EC, and the WEEE Directive 2002/96/EC.
LVD:EN60950-1
EMC : EN55022 Class B
EN61000-3-2
EN61000-3-3
EN55024
This declaration applies only to the 230-V model.
Declaration of Conformity
"Made for iPod," "Made for iPhone," and "Made for iPad" mean that an electronic accessory has
been designed to connect specifically to iPod, iPhone, or iPad, respectively, 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. Please note that the use of
this accessory with iPod, iPhonem or iPad may affect wireless performance.
●EPSON and ESC/POS are registered trademarks of Seiko Epson Corporation.
●QR Code is registered trademark of DENSO WAVE INCORPORATED.
●CITIZEN is a registered trade mark of CITIZEN WATCH CO.
●CITIZEN es una marca registrada de CITIZEN WATCH CO.
● iPad, iPod, iPod touch and MacOS are trademarks of Apple Inc. registered in the U.S. and other countries.
●Bluetooth is a registered trademark of Bluetooth SIG, Inc.
●All other trademarks are the property of their respective owners.
● Citizen Systems use these trademarks in accordance with the license of relevant owners.
Copyright c 2016 by CITIZEN SYSTEMS JAPAN CO., LTD.

IMPORTANT: This equipment generates, uses, and can radiate radio frequency energy
and if not installed and used in accordance with the instruction manual, may cause
interference to radio communications. It has been tested and found to comply with
the limits for a Class B computing device pursuant to Subpart J of Part 15 of FCC
Rules, which are designed to provide reasonable protection against such interference
when operated in a commercial environment. Operation of this equipment in a
residential area is likely to cause interference, in which case the user at his own
expense will be required to take whatever measures may be necessary to correct
the interference.
CAUTION: Use shielded cable for this equipment.
Sicherheitshinweis
Die Steckdose zum Anschluß dieses Druckers muß nahe dem Gerät angebracht und
leicht zugänglich sein.
For Uses in Canada
This digital apparatus does not exceed the class B limits for radio noise emissions
from digital apparatus, as set out in the radio interference regulations of the Canadian
department of communications.
Pour L’utilisateurs Canadiens
Cet appareil numérique ne dépasse pas les limites de carégorie a pour les émissions
de bruit radio émanant d’appareils numériques, tel que prévu dans les réglements
sur l’interférence radio du départment Canadien des communications.

— 1 —
GENERAL PRECAUTIONS
●Before using this product, be sure to read through this manual. After having read
this manual, keep it in a safe, readily accessible place for future reference.
●The information contained herein is subject to change without prior notice.
●Reproduction or transfer of part or all of this document in any means is prohibited
without permission from CITIZEN SYSTEMS.
●Note that CITIZEN SYSTEMS is not responsible for any operation results regardless
of missing, error, or misprinting in this manual.
●Note that CITIZEN SYSTEMS is not responsible for any trouble caused as a result
of using options or consumables that are not specified in this manual.
●Except explained elsewhere in this manual, do not attempt to service, disassemble,
or repair this product.
●Note that CITIZEN SYSTEMS is not responsible for any damage attributable to
incorrect operation/handling or improper operating environments that are not
specified in this manual.
●Data are basically for temporary use, not stored for a long period or permanently.
Please note that CITIZEN SYSTEMS is not responsible for damage or lost profit
resulting from the loss of data caused by accidents, repairs, tests or other
occurrence.
●If you find loss of information, error, or uncertain matter, please contact your
CITIZEN SYSTEMS dealer.
●If you find any disordered or missing page(s), contact your CITIZEN SYSTEMS
dealer for replacement.

— 2 —
SAFETY PRECAUTIONS ... WHICH SHOULD BE STRICTLY OBSERVED
Before using this product for the first time, carefully read these SAFETY PRECAUTIONS.
Improper handling may result in accidents (fire, electric shock or injury).
In order to prevent injury to operators, third parties, or damage to property, special
warning symbols are used in the User’s Manual to indicate important items to be strictly
observed.
●After having read this Manual, keep it in a safe, readily accessible place for future
reference.
●Some of the descriptions contained in this manual may not be relevant to some printer
models.
The following describes the degree of hazard and damage that could occur if the printer
is improperly operated by ignoring the instructions indicated by the warning symbols.
This symbol is used to alert your attention to important items.
WARNING
Neglecting precautions indicated by this symbol may result in injury or damage to
properties.
CAUTION
This symbol is used to alert you to the danger of electric shock or electrostatic
damage.
This symbol denotes a request to unplug the printer from the wall outlet.
This symbol is used to indicate useful information, such as procedures, instructions
or the like.
This symbol is used to indicate prohibited actions.
Neglecting precautions indicated by this symbol may result in fatal or serious injury.

— 3 —
■Do not use or store this product in a place where it will be exposed
to:
* Flames or moist air.
* Direct sunlight.
* Hot airflow or radiation from a heating device.
* Salty air or corrosive gases.
* Ill-ventilated atmosphere.
* Chemical reactions in a laboratory.
* Airborne oil, steel particles, or dust.
* Static electricity or strong magnetic field.
•Neglecting these warnings may result in printer failure, overheating,
emission of smoke, fire, or electric shock.
PRECAUTIONS ON PRINTER INSTALLATION
■Do not drop any foreign object nor spill liquid into the printer. Do not
place any object on the printer either.
■Do not drop any metallic object such as paper clip, pin or screw into
the printer.
■Do not place a flower vase, pot or cup containing water on the printer.
■Do not spill coffee, soft drinks or any other liquid into the printer.
■Do not spray insecticide or any other chemical liquid over the printer.
•Ametallic foreign object, if accidentally dropped into the printer, may
cause printer failure, fire, or electric shock. Should it occur,
immediately turn the printer off, unplug it from the supply outlet,
and call your local Citizen Systems dealer.
Do not handle the printer in the following ways:
■Do not allow the printer to sustain strong impacts or hard jolts (e.g.,
trampling, dropping, striking with a hard edge).
■Never attempt to disassemble or modify the printer.
•Neglecting to handle properly may result in printer failure,
overheating, emission of smoke, fire, or electric shock.
WARNING
■Install, use, or store the printer out of the reach of children.
•Electric appliances could cause an unexpected injury or accident if
they are handled or used improperly.
•Keep the power cord and signal cables out of the reach of children.
Also children should not be allowed to gain access to any internal
part of the printer.
•The plastic bag the printer came in must be disposed of properly or
kept away from children. Wearing it over the head may lead to
suffocation.

— 4 —
Do not use the printer under the following conditions.
■A state subject to vibration or unstable state.
■A state with this product slanted.
• Otherwise dropping may cause injury.
• Poor print quality may occur.
■A state where the printer ventilation holes are obstructed by a nearby
wall or other equipment.
■A state where any object is placed on the printer
■A state where the printer is covered or wrapped by a cloth or bed
clothing
•Be careful about internal heat buildup, which could cause fire and
deform the case.
■Avoid using the printer near a radio or TV set or from supplying it
from the same outlet as these appliances.
■Avoid using the printer interconnected with a cable or cord that has
no protection against noise. (For interconnections, use shielded or a
twisted pair of cables and ferrite cores, or other anti-noise devices.)
■Avoid using the printer with a device that is a strong source of noise.
•The printer may have an adverse effect on nearby radio or TV
transmissions. There may also be cases when nearby electrical
appliances adversely influence the printer, causing data errors or
malfunction.
■A state where this product is installed vertically or sidelong.
•Malfunction, failure, or electric shock may result.
CAUTION
■Use the printer with its grounding post connected to a convenient
grounding facility.
•If leakage occurs electric shock may result.
■Do not connect the printer’s grounding post onto any of the following
facilities:
* Utility gas piping
• A gas explosion could result.
* Telephone line ground
* Lightning rod
• If lightning strikes a large surge of current may cause fire or
shock.
* Utility water pipes
• Plastic water pipes should not be used for grounding. (Those
approved by a Waterworks Department may be used.)
■Before connecting or disconnecting the grounding lead to or from
the printer, always unplug it from supply outlet.

— 5 —
PRECAUTIONS IN HANDLINGTHE PRINTER
Please observe the following precautions for power source and power
cord:
■Do not plug or unplug the power cord with a wet hand.
■Use the printer only at the specified supply voltage and frequency.
■Use only the specified AC adapter with the printer.
■Check to make sure that the supply outlet from which the printer is
powered has a sufficient capacity.
■Do not supply the printer from a power strip or current tap shared
with other appliances.
■Do not plug the power cord into a supply outlet with dust or debris
left on its plug.
■Do not use a deformed or damaged power cord.
■Do not move the printer while the printer power is on.
•Neglecting to handle properly may result in printer failure, emission
of smoke, fire, or electric shock.
•An overload may cause the power cord to overheat or fire or the circuit
breaker to trip.
■Do not allow anything to rest on the power cord. Do not place the
printer where the power cord will be trampled on.
■Do not use or carry the printer with its power cord bent, twisted, or
pulled.
■Do not attempt to modify the power cord unnecessarily.
■Do not lay the power cord in the neighbor of a heating device.
•Neglecting these cautions may cause wires or insulation to break,
which could result in leakage, electric shock, or printer failure. If the
power cord sustains damage, contact your Citizen Systems dealer.
■Do not leave things around the supply outlet.
■Supply power to the printer from a convenient wall outlet, readily
accessible in an emergency.
•The printer may not be immediately shut down in an emergency.
■Insert the power plug fully into the outlet.
■If the printer will not be used for a long time, leave it disconnected
from its supply outlet.
■Hold the plug and connector when plugging or unplugging the power
cord or signal cable after turning off the printer and the appliance
connected to it.
WARNING

— 6 —
THESE LABELS INDICATE THE
RISK OF ANY INJURY DUE TO
"HIGH TEMPERATURE" OF THE
PRINT HEAD AND "SAW-
TOOTHED EDGE" OF THE
MANUAL CUTTER.
Caution label is attached on the position shown in the following figure. Carefully
read the precautions in handling before using the printer.
To prevent possible malfunction or failure observe the following.
■Avoid operating the printer without paper properly loaded.
■Avoid the use of paper not complying with specifications.
•May result in poor print quality.
■Avoid using torn pieces of paper or spliced with plastic adhesive
tapes.
■Avoid forcibly pulling already loaded paper by hand.
■Avoid wedging the paper into the printer.
•May jam paper. To release, refer to “Removing Jammed Paper” in
this manual.
■Avoid using a sharp pointed device to operate panel keys.
■Be sure to firmly insert the cable plug into its mating socket.
•Across connection may damage the printer’s internal electronics or
the host system’s hardware.
■Only use the printer with devices that have designated solenoid
specifications for the cash drawer interface connector.
•Neglecting this caution may result in malfunction or failure.
CAUTION
■Do not transport this printer with the paper roll inside.
•Printer failure or breakage may occur.
To prevent injury and printer failures from worsening, observe the following:
■Do not touch the printing surface of the thermal head.
■Do not touch any of the moving parts (e.g., paper cutter, gears, active
electrical parts) while the printer is working.
■In case of trouble do not attempt to repair the printer. Ask Citizen
Systems service for repair.
■Be careful that the printer cover does not entrap your hands or fingers.
■Be careful with sharp edges on the printer. Do not allow them to
injure you or damage property.
•May result in electric shock, burn, or injury.
If the printer emits smoke, an odd smell, or unusual noise while printing, immediately
abort the current print session and unplug the printer from the supply outlet.

— 7 —
Observe the following precautions for daily maintenance.
■When cleaning the printer, always turn it off and unplug it from the supply
outlet.
■Use a soft, dry cloth for cleaning the surface of the printer case.
■For severe stains, use a soft cloth slightly dampened with water.
■Never use organic cleaning solvent such as alcohol, paint thinner,
trichloroethylene, benzene, or ketone. Never use a chemically processed
cleaning cloth.
■To remove paper dust, use a soft brush.
■When transporting the printer, remove the paper roll from the printer.
CAUTION
•The thermal head is at a dangerously high temperature immediately after
printing. Allow it to cool off before launching maintenance work.
DAILY MAINTENANCE
CAUTION
PRECAUTIONS IN HANDLING THE BT MODEL
■This printer has the security function conforming to the Bluetooth standards to
keep the security at the time of communication using Bluetooth function. In some
case, however, the security function may not be satisfactory depending on the
content of the setting.
Be careful when you make a communication using the Bluetooth function.
■Note that Citizen Systems is not responsible for any leakage of data or information
in the communication using the Bluetooth function.
■The frequency band used in this printer is also used for home appliances such as
microwave oven, industrial, scientific and medical equipment, intercommunication
radio station for identifying mobile unit requiring the license used in the
manufacturing line of factories, specific small power radio station requiring no
license, amateur radio station, etc. (hereinafter “other radio stations”).
1. Before using this printer, check to be sure that “other radio station” is not in
service nearby the printer.
2. If any radio interference should occur between this printer and “other radio
station”, quickly change the printer location or turn the printer power off to
remove radio interference.

— 8 —
THE TABLE OF CONTENTS
1. GENERAL OUTLINE ................................................................... 9
1.1 Features ..........................................................................................9
1.2 Unpacking .....................................................................................10
1.3 Model Classification .....................................................................10
1.4 Basic Specifications .....................................................................11
2. EXPLANATION OF PRINTER PARTS........................................ 12
2.1 Printer Appearance ......................................................................12
2.2 Paper Cover Inside ....................................................................... 14
2.3 Other Built-in Functions ............................................................... 14
3. PREPARATION ........................................................................... 15
3.1 Connecting the AC Adapter and AC Power Cord ......................15
3.2 Connecting Interface Cables .......................................................16
3.3 Bluetooth Connection ..................................................................17
3.4 Connecting the Cash Drawer ......................................................19
3.5 Installing the Printer ..................................................................... 20
3.6 Setting DIP Switch (Only serial interface type) .......................... 21
3.7 Adjusting the Paper Near-end Sensor ........................................22
3.8 Selecting Paper Type ................................................................... 23
3.9 Adjusting Paper Sensor ...............................................................23
3.10 Full cutting label paper ..............................................................25
4. MAINTENANCE AND TROUBLESHOOTING ..........................26
4.1 Setting/Replacing Paper Rolls .....................................................26
4.2 Removing Jammed Paper ...........................................................27
4.3 Cleaning the Print Head ...............................................................27
4.4 When the Paper Cover Cannot Be Opened ................................28
4.5 Self-printing ..................................................................................29
4.6 Hexadecimal Dump Printing .......................................................29
4.7 Error Indication .............................................................................30
5. OTHER .......................................................................................31
5.1 External Views and Dimensions .................................................31
5.2 Manual Setting of Memory Switch ............................................. 32
5.3 Printing Paper ...............................................................................36

— 9 —
1. GENERAL OUTLINE
The CT-S281 is a thermal line printer designed for use with a broad array of
terminal equipment including, data, POS, and kitchen terminals.
With extensive features, it can be used in a wide range of applications.
1.1 Features
●Compact design.
●The printer allows horizontal or wall mounting installation.
●Auto Cutter provided as a standard unit (performs full cut or partial cut).
●Paper drop-in mechanism facilitating easy paper handling and head cleaning.
●Highly reliable printer mechanism.
●High speed printing with 80 mm/s (60 mm/s at label print mode).
●Fast graphic printing.
●Printer class or Virtual COM can be selected for USB port.
●A variety of functions selectable by memory switches.
●Registration of user-defined characters and logos into flash memory.
●Barcode & 2D Barcode printing is supported.
●2-color printing is supported.
●Can use paper roll with a maximum thickness of 100µm.
●Label and Blackmark paper are usable as option (Label printing).
●Equipped with wireless communication (Bluetooth) interface (BT/BD model).
●Bluetooth communication with iOS device is supported (BD model).
●Usable in connection with the cash drawer dedicated to CT-S281 (BD model).

— 10 —
POWER
FEED
ERROR
PAPER
FEED
FEED
1.2 Unpacking
When unpacking the printer, confirm that the following are provided:
●Printer: 1
●AC adapter: 1
●AC power cord: 1
●Sample paper roll: 1 roll
●USB cable clamp(USB Interface model): 1
●Operation panel(for wall mounting): 1
●Quick start guide: 1
●CD-ROM: 1
Printer
AC adapter
Sample paper roll ** AC power cord *
CD-ROM
Quick start guide
USB cable clamp
(USB Interface model)
Operation panel
(for wall mounting)
1.3 Model Classification
The printer models are classified by the following designation method:
* The AC power cord plug will vary depending of the region.
** In case of label model, Label paper is used for sample paper roll.
CT-S 281 RS U - WH - PX - M1
Interface
RS: Serial RS-232C compliant
UB: USB
BT:Bluetooth & USB
(Destination: Japan only)
BD: Bluetooth, USB & Drawer
Case color
WH: Cool white
BK: Black
Destination
(Letters + Power cord)
J: Japan
E: Europe
U: USA
Model name
Optional feature
No sign: Standard printing
PX: With paper near-end sensor
XL: With label sensor
PL: With paper near-end sensor and label sensor
Optional feature
No sign: Standard printing
M1: With blackmark sensor (Applicable only
for the printer with label sensor)
* Some specific combination may not be supported. Contact us beforehand.

— 11 —
Item Specifications
Model CT-S281RSU CT-S281RSE
CT-S281UBU CT-S281UBE
Print method Line thermal dot print method
Print width 48 mm/384 dots
Dot density 8 (horizontal) ×8 (vertical) dots/mm (203 dpi)
Print speed 80 mm/s (Fastest, print density: Standard level),
60mm/sec in label printing
Number of print columns Font A: 32 columns; 12 ×24 dots horizontal and vertical
Font B: 42 columns; 9 ×24 dots
Font C: 48 columns; 8 ×16 dots
Character size Font A: 1.50 ×3.00 mm
Font B: 1.13 ×3.00 mm
Font C: 1.00 ×2.00 mm
Character type Alphanumeric, International, PC437/850/852/857/858/860/863/
864/865/866/WPC1252/Katakana/Thai code 18
User memory 256KB (User-defined characters and logos can be registered)
Types of bar code UPC-A/E, JAN (EAN) 13/8 columns, ITF, CODE 39, CODE 128,
CODABAR, CODE 93, PDF417, QRCODE
Line spacing 4.23 mm (1/6 inch) settable with command
Paper roll
Thermal paper roll: 58 mm ×φ83 mm, Label paper: 58 mm x φ 80 mm
Paper thickness: 0.06 to 0.1 mm
Interfacing Serial, USB only, USB & Bluetooth
Bluetooth rating 2.0 (BT model), 3.0 + EDR (BD model)
Drawer 1 circuit (BD model only)
Input buffer Normally: 4K or 45 Bytes
At Bluetooth communication: 64K bytes (BT model), 256K bytes (BD model)
Supply voltage DC 8.5 V ±5%
Power consumption Standby: Approx. 2 W, Printing: Approx. 18 W (Approx. 26 W max.)
AC adapter Rated input: AC 100 to 240 V, 50/60 Hz
Rated output: DC 8.5 V, 2.5 A
Weight Approx. 630 g
Outside dimensions 106 (W) ×180 (D) ×105 (H) mm
Operating temperature and humidity 5 to 40°C, 10 to 85% RH (No condensation)
Storage temperature and humidity −20 to 60°C, 10 to 90% RH (No condensation)
Reliability Print head life: 50 km, 1 ×108pulses (At normal temperature/
humidity with recommended paper used)
Auto cutter life: 1million cuts(At normal temperature/
humidity with recommended paper used)
Safety standard * UL, C-UL, FCC Class B TUV, GS, CE marking
Radio Law BT model (Mark indicating technical standards conformity), BD model
(Mark indicating technical standards conformity, FCC, R&TTE)
*Represents the safety standards acquired when CITIZEN SYSTEMS-made adapters (28AD series)
are used.
1.4 Basic Specifications

— 12 —
FEED
FEED
2. EXPLANATION OF PRINTER PARTS
2.1 Printer Appearance
Printer cover
Power switch
Cover open button
Operation panel
●Printer cover
Paper is located inside this cover.
●Cover open button
To refill or replace paper, open the paper cover by pushing this button.
●Power switch
This switch turns the printer power ON/OFF.
●Cutter gear cover
To release the cutter lock, open this cover and rotate cutter gear.
Cutter gear cover
●POWER LED
Lights when the printer power is on and goes off when the printer power is
off. May blink or light in a special mode or in case of a failure.
●FEED button
Pressing this button once causes a paper feed of one line. Pressing the button
continuously causes the paper to feed continuously.
POWER
FEED
ERROR
PAPER
POWER LED ERROR LEDFEED button
Operation Panel
PAPER LED

— 13 —
●ERROR LED
Lights or blinks when paper is empty or in case of a failure.
The interval length of blinking shows the type of error.
●PAPER LED
Lights when there is no paper or the paper is low with the optional PNE sensor.
●Bluetooth Status LED (Only BT model and BD model are located inside the
back of the main body)
Bluetooth communication status is indicated by blinking.
Rear Connectors
●Power connector
Connects to the cable from AC adapter.
●USB Interface connector
Connects to the USB interface cable.
●Serial interface connector
Connects to the serial interface cable.
●Sensor adjuster cover
When adjusting the Paper sensor, remove this cover.
●Drawer kick connector (BD model only)
Cable from the drawer is connected.
Type UB/BTType RS
Power connector
Serial interface
connector USB Interface connector
Sensor adjuster
cover Sensor adjuster
cover
Power connector
Bluetooth Status LED
Drawer kick connector
Type BD

— 14 —
2.2 Paper Cover Inside
●Auto Cutter
Cuts the paper when software command is sent to the printer. Cutting method
could be partial cut or full cut, “Partial Only”is set to valid by the default
memory switch 4-8, so that the full cut command will execute as partial cut
operation.
●Manual cutter
Tears the paper by hand.
To cut the printed paper, gently pull the paper from the edge of the paper at the angle
so that paper firmly contacts the manual cutter. Improper direction of pull may result
in poor cutting or excessive unwinding of paper. In some case, characters may be
destroyed at the first printing after the paper is cut.
●Paper near-end sensor (Factory option)
If installed, detects when paper roll goes low. The external diameter of paper
roll remainder will vary depending on the position of the paper near-end
sensor lever.
●Paper-end sensor
Stops printing when this sensor detects paper end.
●Print(thermal)head
Prints characters and/or graphics data on thermal paper.
●Paper feed roller
Feeds paper as part of print mechanism.
2.3 Other Built-in Functions
●User memory
Allows registration of user-defined characters and logo data in nonvolatile
memory. Data remain registered even if the printer is OFF.
●Memory switches
Allow printer configuration, could be set by software command or manually
on the printer, changes remain registered in nonvolatile memory even if the
printer is OFF.
Paper near-end sensor
Paper feed roller
Auto cutter
Manual cutter
Print (thermal) head
Paper-end sensor
FEED
FEED

— 15 —
3. PREPARATION
3.1 Connecting the AC Adapter and AC Power Cord
1. Tu rn off the printer power.
2. Plug in the cable connector of the AC adapter to the power connector at the
rear of the printer.
3. Connect the AC power cord to the inlet of AC adapter, and insert the AC power-
cord plug into a suitable wall outlet.
CAUTION!
●Use only the specified AC adapter with the printer.
●When disconnecting a cable, do not pull out by the cable. Always hold the plug.
●Always keep the AC power supply away from other noise generating equipment.
●Do not pull the power cord. Otherwise fire, electric shock, or power disconnection
may result.
●If lightning is approaching, unplug the AC power cord from the wall outlet. Otherwise
fire or electric shock may result.
●Keep the power cord away from heat generating appliances. Otherwise the shield of
power cord may be fused resulting in a fire or electric shock.
●If the printer will not be used for a long time, leave it disconnected from its supply
outlet.
●Lay the cable not to be caught by the leg or the like.
AC power cord
Inlet
Cable connector
AC adapter

— 16 —
Printer
Pin Signal
2TXD
3RXD
4RTS
6DSR
7SG
20 DTR
3.2 Connecting Interface Cables
Turn off the printer and unplug the power connector. Then follow the procedure
for interface cable connection.
Orient the interface cable terminal correctly and insert it into the interface
connector.
CAUTION!
●When disconnecting the cable, always hold the connector.
●Lay the cable not to be caught by the leg or the like.
Serial Interface
For serial interface use cable with the following configuration:
9-pin - 25-pin cable
PC
Signal Pin
RXD 2
TXD 3
DTR 4
SG 5
DSR 6
CTS 8
USB Interface
USB cable clamp

— 17 —
3.3 Bluetooth Connection
3.3.1 Pairing
To insure stable Bluetooth communication between the host and the printer,
Search Bluetooth Device Set Pairing must be implemented at the time of
initial connection. Pairing may be different in operation by the model or the
host. (The following may or may not occur depending on the host setting.)
BT model
After connection, a passkey (PIN code) may be requested. Enter a passkey.
BD model
When connected from the host, operation may be different depending on
whether the host has SSP (Simple and Safe Pairing) feature or not.
If the host has SSP feature, safe pairing will be established without additional
operation.
If the host has no SSP feature, a passkey may be requested. Enter a passkey.
The device name to be found and the passkey to be entered are as follows:
Device name: CITIZEN SYSTEMS
Passkey: Enter the last four digits of the address printed by self-printing.
(Use capital letter for A through F.)
Example: If the address is 01:23:45:67:89:AB, the passkey may
be “89AB”
If “No Response” = Not found is set with MSW13-5 in case of BD model, no
printer may be found by Search Device. In this case, when you press the FEED
button for 3 or 4 seconds with the printer power on and cover opened, the
printer enters Can Find mode (Findable mode). Findable mode is cleared when
the printer is connected to the host.