Epson TM-m30III Use and care manual

M00146601
Rev. B
Product Overview
Setup
Advanced Usage
Application Development Information
Handling
Appendix

Cautions
•No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by
any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written
permission of Seiko Epson Corporation.
•The contents of this document are subject to change without notice. Please contact us for the latest
information.
•While every precaution has been taken in the preparation of this document, Seiko Epson Corporation
assumes no responsibility for errors or omissions.
•Neither is any liability assumed for damages resulting from the use of the information contained herein.
•Neither Seiko Epson Corporation nor its affiliates shall be liable to the purchaser of this product or third
parties for damages, losses, costs, or expenses incurred by the purchaser or third parties as a result of:
accident, misuse, or abuse of this product or unauthorized modifications, repairs, or alterations to this
product, or (excluding the U.S.) failure to strictly comply with Seiko Epson Corporation’s operating and
maintenance instructions.
•Seiko Epson Corporation shall not be liable against any damages or problems arising from the use of any
options or any consumable products other than those designated as Original Epson Products or Epson
Approved Products by Seiko Epson Corporation.
Trademarks
EPSON is a registered trademark of Seiko Epson Corporation.
Exceed Your Vision and ESC/POS are registered trademarks or trademarks of Seiko Epson Corporation.
Microsoft and Windows are registered trademarks of Microsoft Corporation in the United States and/or other
countries.
Wi-Fi®, WPA™, WPA2™, and WPA3™are either registered trademarks or trademarks of Wi-Fi Alliance®.
The Bluetooth®word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of
such marks by Seiko Epson Corporation is under license.
IOS is a trademark or registered trademark of Cisco in the U.S. and other countries and is used under license.
Apple, Apple TV, Apple Watch, iPad, iPad Air, iPad Pro, iPhone, and Lightning are trademarks of Apple Inc.,
registered in the U.S. and other countries. tvOS is a trademark of Apple Inc.
Android™is a trademark of Google LLC.
Google Play and the Google Play logo are trademarks of Google LLC.
All other trademarks are the property of their respective owners and used for identification purpose only.
ESC/POS®Command System
Epson ESC/POS is a proprietary POS printer command system that includes patented or patent-pending
commands. ESC/POS is compatible with most Epson POS printers and displays.
ESC/POS is designed to reduce the processing load on the host computer in POS environments. It comprises a
set of highly functional and efficient commands and also offers the flexibility to easily make future upgrades.
©Seiko Epson Corporation 2022.

3
For Safety
Key to Symbols
The symbols in this manual are identified by their level of importance, as defined below. Read the following
carefully before handling the product.
Warnings
WARNING
You must follow warnings carefully to avoid serious bodily injury.
CAUTION
Provides information that must be observed to prevent damage to the equipment or loss of data.
•Possibility of sustaining physical injuries.
•Possibility of causing physical damage.
•Possibility of causing information loss.
Provides information that must be observed to avoid damage to your equipment or a malfunction.
Provides important information and useful tips.
WARNING
•Handle the power cable with care.
Improper handling may lead to fire or electric shock.
∗Do not modify or attempt to repair the cable.
∗Do not place any heavy object on top of the cable.
∗Avoid excessive bending, twisting, and pulling.
∗Do not place the cable near heating equipment.
∗Check that the plug is clean before plugging it in.
∗Be sure to push the plug all the way in.
•Be sure to use the specified power source.
Connection to an improper power source may cause fire or shock.
•Be sure your AC cable meets the relevant safety standards and includes a power system
ground terminal (PE terminal).
Otherwise shock may result.
•Do not place multiple loads on the power outlet.
Overloading the outlet may lead to fire.
•Shut down your equipment immediately if it produces smoke, a strange odor, or unusual
noise.
Continued use may lead to fire. Immediately unplug the equipment and contact qualified
service personnel.
•Never disassemble or modify this product.
Tampering with this product may result in injury or fire.
•Do not allow foreign matter to fall into the equipment.
Penetration by foreign objects may lead to fire.

4
Cautions
Caution Labels
The caution labels on the product indicate the following precautions.
CAUTION:
Do not touch the thermal head and its surroundings during use or immediately after use. After printing, the
thermal head and its surroundings can be very hot.
Restriction of Use
When this product is used for applications requiring high reliability/safety, such as transportation devices
related to aviation, rail, marine, automotive, etc.; disaster prevention devices; various safety devices, etc.; or
functional/precision devices, etc., you should use this product only after giving consideration to including fail-
safes and redundancies into your design to maintain safety and total system reliability. Because this product was
not intended for use in applications requiring extremely high reliability/safety, such as aerospace equipment,
main communication equipment, nuclear power control equipment, or medical equipment related to direct
medical care, etc., please make your own judgment on this product's suitability after a full evaluation.
WARNING
•If water or other liquid spills into this equipment, do not continue to use it.
Continued use may lead to fire. Unplug the power cord immediately and contact qualified
service personnel.
•Do not use aerosol sprayers containing flammable gas inside or around this product.
Doing so may cause fire.
•Do not use this product in locations subject to high humidity or dust levels.
Excessive humidity and dust may cause equipment damage or fire.
CAUTION
•Do not connect cables in ways other than those mentioned in this manual.
Different connections may cause equipment damage.
•Be sure to set this equipment on a firm, stable, horizontal surface.
The product may break or cause injury if it falls.
•Do not place heavy objects on top of this product. Never stand or lean on this product.
Equipment may fall or collapse, causing breakage and possible injury.
•Take care not to injure your fingers on the manual cutter
∗When you remove printed paper
∗When you perform other operations such as loading/replacing roll paper
•Do not open the roll paper cover without taking the necessary precautions, as this can
result in injury from the autocutter fixed blade.
•To ensure safety, unplug this product before leaving it unused for an extended period.
•To avoid risk of electric shock, do not set up this product or handle cables during a
thunderstorm.
•Never insert or disconnect the power plug with wet hands.
Doing so may result in severe shock.
•Never attempt to repair this product yourself.
Improper repair work can be dangerous.
•Do not touch the paper during printing or before the paper has been cut.
Doing so may result a paper jam or an autocutter error (paper cannot be cut).
•If used for self-service terminals, take precautions to prevent users from holding the paper
or blocking the paper exit with their hands during printing.

5
Open Source Software License
This product uses open source software in addition to Epson proprietary software.
For information of the open source software used in this product, see the following URL.
http://xxx.xxx.xxx.xxx/PRESENTATION/ADVANCED/LICENSE/TOP
For “xxx.xxx.xxx.xxx” in the above URL, input your printer’s IP address.

6
Notes on Wi-Fi/Bluetooth® Interfaces
Effects of Radio Wave Radiation on the Environment
This product is equipped with a radio module that has been certified as a radio facility for low-power data com-
munication systems based on the Radio Law. The electromagnetic energy emitted by the radio module in this
product is much lower than that emitted by other wireless devices (such as cell phones).
However, in certain environments where there is a risk of interference to other devices or services, the use of
this product may be restricted by the owner of the building or person in charge of the organization. In a partic-
ular environment, such as in an airport, if you are not sure whether the use of your wireless device will be
restricted, inquire about permission to use this product before turning it on.
Notes on Interference
•When setting up or using this product, be sure to follow the instructions in this manual.
Setting up or using this product without following this manual may cause harmful interference to other
wireless communications.
•If this product causes harmful interference to radio or television reception, the user is encouraged to try to
correct the interference by one or more of the following measures.
- Change the direction and location of the TV/radio receiving antenna
- Install the product away from the TV/radio
- Connect this product to an outlet other than the one to which the TV/radio is connected
- Talk to an experienced radio/TV technician
•Please take the following points into consideration when using the product in an environment where there
are devices that generate radio interference, such as microwave ovens.
- Install the product as far away as possible from devices that may cause radio interference.
- Use channels that are away from frequency bands that cause radio interference.
- Install a shielding board between this product and devices that generate radio wave interference.
- Use a frequency band that will not cause interference, either 2.4 GHz or 5 GHz.
- When setting the auto channel of the access point, make sure that this product is not set to a channel that
causes radio interference.
•Do not attempt to disassemble or modify this product.
We assume no responsibility whatsoever for any harmful interference to other wireless communications
caused by unauthorized modification.

7
Notes on Wireless LAN Connection
This product has not been confirmed to work with all wireless LAN devices, and operation with all wireless
LAN devices is not guaranteed.
Notes on Wireless LAN Security
The following are important matters concerning your rights (privacy protection).
Instead of using LAN cables, wireless LANs use radio waves to exchange information, which has the advantage
of allowing free LAN connections within the range of the radio waves. On the other hand, radio waves can
reach anywhere within a certain range, even over obstacles (walls, etc.), so if no security settings are made, the
following problems may occur.
Having your information stolen
There is a possibility that a malicious third party may intentionally intercept radio waves and steal personal
information such as IDs, passwords or credit card numbers, as well as communication contents such as the con-
tents of emails.
Access from unauthorized users
A malicious third party may gain unauthorized access to your personal or company network to do the following.
•Taking out personal or confidential information (information leakage)
•Communicating by impersonating a specific person and distributing fraudulent information (spoofing)
•Rewriting and sending intercepted communications (tampering)
•Destroy data and systems by spreading computer viruses, etc. (Destruction)
Essentially, wireless LAN cards and wireless access points have a security mechanism to deal with these prob-
lems, so by using the product with the settings related to the security of the wireless LAN product, the possibil-
ity of such problems occurring will be reduced. It is recommended that you fully understand the problems that
may occur if you do not configure the security settings, and use the product after configuring the security set-
tings at your own discretion and responsibility.
Notes on SSID (Service Set Identifier) Settings
For security reasons, please observe the following precautions regarding SSID settings.
•Make sure to change the SSID from the default setting.
•Do not set the SSID to a string that can identify the owner.
Notes on Setting the Encryption Key
For security reasons, please observe the following precautions when setting the encryption key.
•Avoid using words from the dictionary as much as possible.
•Combine meaningless alphanumeric characters and symbols.
•Use a string of at least 13 characters, preferably 20 characters or more.

8
Manuals for This Product
The following manuals are available for this product.
Paper manual Manuals, such as Setup Guide, included in the product package
Explains how to install and set up this product, from checking the bundled items.
Precautions for handling this product are also provided. To ensure safe and correct use and
to prevent harm to you or others, or damage to property, please read the paper manuals
before using the product.
Manuals viewed on computers
and smart devices
User’s Manual
Describes the functions of this product, how to operate it, information on maintenance,
and how to solve various problems. In addition to the URL below, you can also access it
from the QR code attached to the product itself.
<https://www.epson-biz.com/?prd=tm-m30iii&inf=manual>
Manuals viewed on computers TM-m30III Technical Reference Guide (this manual)
Describes information necessary to set up this product, perform daily tasks, and develop
your own system.
Manuals viewed on computers
and smart devices
Web video manual
Explains in an easy-to-understand manner how to set up this product and how to
connect this product via Wi-Fi or Bluetooth. You can access the manual from the URL
below.
<https://www.epson-biz.com/?prd=tm-m30iii-series&inf=video>
The contents of the videos are subject to change without notice.

9
About this Manual
Aim of the Manual
This manual was created to provide information on development, design, and installation of POS systems and
development and design of printer applications for developers.
Manual Content
The manual is made up of the following sections:
Chapter 1 Product Overview
Chapter 2 Setup
Chapter 3 Advanced Usage
Chapter 4 Application Development Information
Chapter 5 Handling
Appendix Product Specifications
Specifications of Interface and Connector
Bluetooth Low Energy Technology Advertising
Character Code Tables
Compatibility with USB-A

10
Contents
■For Safety..................................................................................................................................3
Key to Symbols.................................................................................................................................................................. 3
Warnings ............................................................................................................................................................................. 3
Cautions............................................................................................................................................................................... 4
■Caution Labels .........................................................................................................................4
■Restriction of Use ....................................................................................................................4
■Open Source Software License.............................................................................................5
■Notes on Wi-Fi/Bluetooth® Interfaces .................................................................................6
Effects of Radio Wave Radiation on the Environment ........................................................................................ 6
Notes on Interference..................................................................................................................................................... 6
■Notes on Wireless LAN Connection .....................................................................................7
Notes on Wireless LAN Security .................................................................................................................................. 7
Notes on SSID (Service Set Identifier) Settings...................................................................................................... 7
Notes on Setting the Encryption Key........................................................................................................................ 7
■Manuals for This Product .......................................................................................................8
■About this Manual ..................................................................................................................9
Aim of the Manual ........................................................................................................................................................... 9
Manual Content................................................................................................................................................................ 9
■Contents................................................................................................................................. 10
Product Overview .......................................................................................... 15
■Features ................................................................................................................................. 15
■Product Configurations ...................................................................................................... 17
Models................................................................................................................................................................................17
NFC Tag ..............................................................................................................................................................................17
Included.............................................................................................................................................................................17
Options ..............................................................................................................................................................................17
■Part Names and Functions ................................................................................................. 18
Body ....................................................................................................................................................................................18
Panel LED ..........................................................................................................................................................................19
Connectors .......................................................................................................................................................................21
Online and Offline..........................................................................................................................................................22
■Status and Errors .................................................................................................................. 23
Status Display ..................................................................................................................................................................23
Network Connection Status .......................................................................................................................................24
Bluetooth Connection Status ....................................................................................................................................25
Error Status .......................................................................................................................................................................25
■NV Memory (Non-Volatile Memory)................................................................................. 26
NV Graphics Memory....................................................................................................................................................26
User NV Memory ............................................................................................................................................................26

11
Memory Switches (customized values)..................................................................................................................26
R/E (Receipt Enhancement)........................................................................................................................................26
Maintenance Counter...................................................................................................................................................27
■Simple Setup for Wireless LAN .......................................................................................... 28
About SimpleAP (Wi-Fi Direct) ..................................................................................................................................29
■Useful Functions for Smart Devices.................................................................................. 30
NFC Tag ..............................................................................................................................................................................30
QR Code.............................................................................................................................................................................30
■Printing Using Multiple Interfaces.................................................................................... 31
■USB-PD and Network Tethering ........................................................................................ 32
USB-PD Function ............................................................................................................................................................32
Network Tethering .........................................................................................................................................................33
Available Smart Devices and Notes.........................................................................................................................37
■Roll Paper Near-End Detection Function......................................................................... 39
Setup ............................................................................................................... 40
■Flow of Setup ........................................................................................................................ 40
■Installing the Printer............................................................................................................ 41
■Changing the Paper Width ................................................................................................ 42
■Connecting the Optional Wireless LAN Unit................................................................... 43
Connecting the Wireless LAN Unit...........................................................................................................................43
■Connecting the Optional Customer Display................................................................... 44
■Connecting the Optional External Buzzer....................................................................... 45
Attachment Position .....................................................................................................................................................45
■Connecting the Cash Drawer............................................................................................. 46
Required specifications of cash drawers................................................................................................................46
Connecting the drawer kick cable ...........................................................................................................................47
■Connecting to the Power Source ...................................................................................... 48
Connection Procedure .................................................................................................................................................48
■Connecting the Printer to the Host Devices.................................................................... 50
USB-B Interface ...............................................................................................................................................................50
USB-PD Interface ............................................................................................................................................................50
Ethernet Interface ..........................................................................................................................................................50
Bluetooth Interface .......................................................................................................................................................53
Wireless LAN Interface..................................................................................................................................................57
■Routing Cables in Various Directions ............................................................................... 62
Passing Cables through the Rear Center ...............................................................................................................63
Passing Cables through the Left or Right..............................................................................................................63
Passing Cables through the Bottom .......................................................................................................................64

12
Advanced Usage ............................................................................................ 65
■Software Settings................................................................................................................. 65
Overview of Each Function.........................................................................................................................................67
■MAC Address Confirmation................................................................................................ 76
■Setting/Check Modes .......................................................................................................... 77
Self-test Mode .................................................................................................................................................................79
NV Graphics Information Print Mode......................................................................................................................80
Receipt Enhancement Information Print Mode ..................................................................................................80
Software Setting Mode ................................................................................................................................................81
Restore Default Values Mode.....................................................................................................................................82
Interface Setup Mode...................................................................................................................................................83
TM-Intelligent Settings Information Print Mode ................................................................................................85
Peripheral Device Information Print Mode ...........................................................................................................86
Hexadecimal Dumping Mode ...................................................................................................................................86
■Printing a Status Sheet........................................................................................................ 88
■Resetting the Interface Settings ....................................................................................... 90
■TM-Intelligent Function ...................................................................................................... 91
Server direct print ..........................................................................................................................................................91
Status Notification .........................................................................................................................................................91
■Web Config............................................................................................................................ 92
How to Start Web Config.............................................................................................................................................92
What can be Configured in Web Config ................................................................................................................92
Application Development Information....................................................... 93
■Controlling the Printer ........................................................................................................ 93
ePOS-Print XML...............................................................................................................................................................93
ESC/POS.............................................................................................................................................................................93
■Controlling the Cash Drawer.............................................................................................. 94
■Controlling the Optional External Buzzer ....................................................................... 95
■Software................................................................................................................................. 96
Development Kit ............................................................................................................................................................96
Drivers ................................................................................................................................................................................97
Utilities ...............................................................................................................................................................................98
Others.................................................................................................................................................................................98
Download .........................................................................................................................................................................99
■Precautions when Developing Applications ................................................................ 100
Power Button Settings .............................................................................................................................................. 100
Minimum Paper Length when Cutting ............................................................................................................... 101
Notes on Printing Barcodes and Two-Dimensional Symbols...................................................................... 101
Application Development and Distribution for iOS ....................................................................................... 101

13
Handling .......................................................................................................102
■Turning the Power On/Off ................................................................................................ 102
Turning the Power On ............................................................................................................................................... 102
Turning the Power Off ............................................................................................................................................... 102
■Removing the Printer Covers........................................................................................... 103
When Ejecting Paper Upward................................................................................................................................. 103
When Ejecting Paper Frontward............................................................................................................................ 104
■Attaching the Printer Covers............................................................................................ 105
For Ejecting Paper Upward ...................................................................................................................................... 105
For Ejecting Paper Frontward ................................................................................................................................. 106
■Installing Roll Paper...........................................................................................................107
When Ejecting Paper Upward................................................................................................................................. 107
When Ejecting Paper Frontward............................................................................................................................ 109
■Removing Jammed Paper ................................................................................................ 111
■Roll Paper Cover does not Open ..................................................................................... 112
■Cleaning the Printer........................................................................................................... 113
Cleaning the Printer Case......................................................................................................................................... 113
Cleaning the Thermal Head/Platen Roller.......................................................................................................... 113
■Preparing for Transport..................................................................................................... 114
■When Using the Printer for a Self-Service Terminal..................................................... 115
Appendix.......................................................................................................116
■Product Specifications ...................................................................................................... 116
Printing Specifications .............................................................................................................................................. 118
Character Specifications ........................................................................................................................................... 119
Paper Specifications ................................................................................................................................................... 121
Printable Area............................................................................................................................................................... 122
Printing and Cutting Positions ............................................................................................................................... 123
Electrical Characteristics........................................................................................................................................... 123
Environmental Conditions....................................................................................................................................... 124
External Dimensions .................................................................................................................................................. 125
■Specifications of Interface and Connector.................................................................... 128
USB Interface ................................................................................................................................................................ 128
Network Interface ....................................................................................................................................................... 130
Bluetooth Interface .................................................................................................................................................... 133
NFC Tag ........................................................................................................................................................................... 136
■Bluetooth Low Energy Technology Advertising........................................................... 137
Introduction .................................................................................................................................................................. 137
Dongle specifications ................................................................................................................................................ 137
Procedure....................................................................................................................................................................... 137
Changing the Bluetooth Low Energy Technology Advertising Packet.................................................... 138

14
■Character Code Tables....................................................................................................... 149
■Compatibility with USB-A................................................................................................. 150

15
Chapter 1 Product Overview
Product Overview
This chapter describes features of the product.
Features
Printing
•High speed receipt printing is possible (300 mm/s maximum).
•By using the "Batch rotate print (Upside Down)" function, you can print pages upside down to make it easier
to read the pages when they are ejected from the front side of the printer.
•Supports a variety of language (code pages)
Handling
•Compact and lightweight
When ejecting paper upward: 127 x 127 x 130 mm (5.0 × 5.0 × 5.1")
When ejecting paper frontward: 127 x 128 x 129 mm (5.0 × 5.0 × 5.1")
Approx. 1.3 kg {2.8 lb}
•Antimicrobial material is used on the exterior of the product. Also, the product has no uneven surfaces for
easy cleaning.
•Easy drop-in paper loading.
•Equipped with an anti-curl function that prevents roll paper from curling.
•Equipped as standard with a near-end detector that can be used regardless of whether the paper ejection
direction is up or forward.
•All models are capable of wired communication and high-speed charging with an iOS device, or Android
and Windows devices that support USB-PD (USB Power Delivery).
•Offers Wi-Fi (IEEE802.11b/g/n or IEEE802.11a/b/g/n/ac) and Bluetooth (Bluetooth 5.0 Dual mode)
functions as standard depending on the model.
•Ethernet, Wi-Fi, and Bluetooth connection status can be easily checked by viewing respective LED lights.
•The USB-C connector (USB-PD compatible) for connecting a smart device can supply up to
18W (12 V/1.5 A or 9 V/2 A).
•Paper eject position are selectable from top and front.
•Optional wall hanging bracket is available to attach the printer to a wall.
•Peripheral devices such as customer display, wireless LAN unit, external optional buzzer, and handy scanner
can be connected.
•A utility for iOS/Android™(Epson TM Utility) for making printer settings is provided.
Functions
•Offers the network tethering function.
•Offers network connection check function.

16
Chapter 1 Product Overview
•TM-Intelligent function is equipped.
•Supports Server Direct Print that sends a request for print data from the product to the Web server at
regular intervals.
•Supports status notification function, which enables the printer to send its status to a web server at
regular intervals.
•Information necessary for connecting to the printer can be obtained using the NFC tag built in the printer or
a QR code printed on a status sheet.
•Printing is possible through multiple built-in interfaces. See "Printing Using Multiple Interfaces" on page 31
for more details.
•Printing of various types of bar codes, GS1-DataBar, and two-dimensional symbols (PDF417, QR code,
MaxiCode, Composite Symbology, Aztec Code, DataMatrix) is supported.
•A maintenance counter function is supported.
•The cutting method can be selected between partial cut (leaving one point in the center uncut) and full cut.
Environment
•Paper saving function is available.

17
Chapter 1 Product Overview
Product Configurations
Models
•Wi-Fi + Bluetooth model
•Standard model
Available models may differ depending on the area.
NFC Tag
You can select the printer you want to use by simply placing an NFC device over the NFC tag (mark) on the
printer. There is a limit to the distance over which communication is possible. See "NFC Tag" on page 136.
Included
•58 mm width roll paper guides*
•80 mm width roll paper (for operation check)
•AC adapter
•AC cable
•Manuals
* They may have been installed in the printer depending on the model.
Options
•Wireless LAN cable set (Model: OT-WL06)
•Customer display (Model: DM-D30/DM-D70)
•Optional external buzzer (Model: OT-BZ20)
•Wall Hanging Bracket Set (Model: OT-WH30)
•There is no data rewriting function.
•Use Epson ePOS SDK to build this function into your application.

18
Chapter 1 Product Overview
Part Names and Functions
Body
1 Roll paper cover Open this cover when loading or replacing roll paper.
2 Panel LED These LEDs indicate the operating status of the printer.
For details on LED, see"Panel LED" on page 19.
3NFC Tag A mark is printed here to indicate the position of the NFC tag. Bring an NFC-compatible
device close to the mark to obtain information about the printer.
For the functions using the NFC tag, refer to "Useful Functions for Smart Devices" on page 30.
4Cover open lever Operate this lever to open the roll paper cover.
5 Feed button Pressing this button once feeds roll paper for one line. Hold down this button to continue
feeding roll paper.
6 Power button Turns the printer on or off.
The power button setting can be changed to disable the power on/off operation with the
power button. See "Power Button Settings" on page 100 for details.
7Bottom cover
(With four rubber
feet attached)
Remove these covers when connecting the DC cable of the AC adapter, interface cables, or
USB cables of peripheral devices. Also, when you want to change the paper eject direction,
remove the two covers and reattach them switching the attachment position.
The printer is shipped with the covers attached so that paper is ejected upward.
8Rearcover
(There is a logo on
the cover)
9 Status sheet button Use this button to print a status sheet on interfaces or initialize the settings on interfaces.

19
Chapter 1 Product Overview
Panel LED
•Wi-Fi + Bluetooth model
•Standard model
Power LED
•Lights when the power supply is on.
•Off when the power supply is off.
•Flashes during the network to start up, when waiting for power off, or updating firmware.
Error LED
•Lights or flashes when an error occurs. (For information about the flashing patterns, see "Status and Errors"
on page 23.)
•Lights after the power is turned on or after a reset (offline). Automatically goes out after a while to indicate
that the printer is ready.
•Off when the printer is in standard mode (online).
Paper LED
•Lights when there is not enough roll paper left, or when no roll paper is left.
•Flashes to urge user to operate the Feed button.
Ethernet LED
•Lights when a LAN cable is connected to the printer and the printer is ready for communication.
•Flashes when the printer is temporarily unable to communicate, such as when it is obtaining an IP address
after the LAN cable is connected.
•Off when a LAN cable is not connected to the printer and when the printer is connected to Wi-Fi.
Wi-Fi LED
•Lights when the printer is connected to Wi-Fi and ready for communication.
•Flashes when the printer is temporarily unable to communicate, such as when it is obtaining an IP address
after being connected to Wi-Fi.
Do not perform the following operations while the printer is waiting for power off (while the power
LED is flashing). Otherwise, it may not startup correctly.
•Pressing the power button to turn on the printer
•Disconnecting the DC cable from the printer or disconnecting the plug from the wall outlet
•Turning off the circuit breaker

20
Chapter 1 Product Overview
•Off while the printer is not connected to Wi-Fi or while the printer is connected to a wired LAN.
For the Standard models that do not have a built-in wireless adapter, this Wi-Fi LED indicates Wi-Fi connection
status when an optional wireless LAN unit is connected.
Bluetooth LED
•Lights while the printer is connected via Bluetooth.
•Flashes while the printer is waiting to be paired with another device.
•Off while the printer is not connected via Bluetooth.