SATO S84NX User manual

1 Introduction 2
Operation
and
Configuration
3 Checking and
Performing
Printer Adjustments
4 Replacement
5 Options 6 Troubleshooting
Service Manual
S84NX
S86NX
S84NX Left-Hand Type S86NX Right-Hand Type

Copyrights
Any unauthorized reproduction of the contents of this document, in part or whole, is strictly
prohibited.
Limitation of Liability
• SATO Corporation and its subsidiaries in Japan, the U.S. and other countries make
no representations or warranties of any kind regarding this material, including, but not
limited to, implied warranties of merchantability and fitness for a particular purpose. SATO
Corporation shall not be held responsible for errors contained herein or any omissions
from this material or for any damages, whether direct, indirect, incidental or consequential,
in connection with the furnishing, distribution, performance or use of this material.
• Specifications and contents in this document are subject to change without notice.
• Be sure to perform a virus check on the USB memory before connecting it to the
product. SATO Corporation shall not be held responsible for any product malfunctions
caused by a virus spread via USB memory.
• Various types of data registered in the product and applications may be damaged. We
recommend saving data separately in advance.
Trademarks
• SATO is a registered trademark of SATO Holdings Corporation and its subsidiaries in
Japan, the U.S. and other countries.
• NiceLabel is a trademark or registered trademark of Euro Plus d.o.o. in the U.S.A and
other countries.
• QR Code is a registered trademark of DENSO WAVE INCORPORATED.
• Wi-Fi®is a registered trademark of Wi-Fi Alliance.
• Wi-Fi Direct™, Wi-Fi Protected Setup™, WPA™ and WPA2™ are trademarks of Wi-Fi
Alliance.
• Windows and Internet Explorer are either registered trademarks or trademarks of
Microsoft Corporation in the United States and/or other countries.
• Bluetooth is a trademark of Bluetooth SIG, Inc., U.S.A.
• Android, YouTube, the YouTube logo, and Google Chrome are trademarks or registered
trademarks of Google LLC.
• AirPlay, iPad, iPhone, iPod, iPod classic, iPod nano, iPod touch, Retina, and Safari are
trademarks of Apple Inc., registered in the U.S. and other countries.
• iPad Air, iPad mini, and Lightning are trademarks of Apple Inc.
• The trademark “iPhone” is used with a license from Aiphone K.K.
• IOS (Internetwork Operating System) is a trademark or registered trademark of Cisco in
the U.S. and other countries and is used under license.
• All other trademarks are the property of their respective owners.
Version: S84NX/S86NX-r02-20-5-22SM
© 2022 SATO Corporation.
All rights reserved.

S84NX/S86NX Service Manual 1
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Table of Contents
1 Introduction................................................................................ 5
1. 1 About This Manual..........................................................................5
1. 2 Safety Precautions .........................................................................5
1. 3 Parts Identification for the Product...............................................6
1.3.1 Front View............................................................................................. 6
1.3.2 Rear View ............................................................................................. 7
1.3.3 Internal View ......................................................................................... 8
1.3.4 Operator Panel View............................................................................. 9
1.3.5 Internal View with Rear Cover Opened............................................... 10
2 Operation and Configuration.................................................. 11
2. 1 About [Settings] menu .................................................................12
2. 2 About [Tools] menu......................................................................13
2.2.1 Test Print............................................................................................. 14
2.2.2 HEX-Dump.......................................................................................... 15
2.2.3 Reset................................................................................................... 16
2.2.4 Certificates .......................................................................................... 17
2.2.5 Clone................................................................................................... 18
2.2.6 Startup Guide...................................................................................... 19
2. 3 About [Service Mode]...................................................................21
2.3.1 Logging in Service Menu .................................................................... 21
2.3.2 Details of the Service Menu ................................................................ 22
2.3.3 RFID.................................................................................................... 23
2.3.4 WiFi Ex-Setting ................................................................................... 27
2.3.5 Reset................................................................................................... 30
2.3.6 Maintenance ....................................................................................... 31
2.3.7 Position Check .................................................................................... 32
2.3.8 Factory Offset ..................................................................................... 33
2.3.9 Factory Pitch ....................................................................................... 34
2. 4 Checking and Updating the Firmware ........................................35

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S84NX/S86NX Service Manual 2
3 Checking and Performing Printer Adjustments.....36
3. 1 Checking Before Starting Work...................................................38
3.1.1 Checking Printing with Actual User Data ............................................ 38
3.1.2 Checking Installation Environment and Printer Conditions ................. 38
3.1.3 Checking Printing with Factory Settings ............................................. 39
3.1.4 Disabling the SOS Connection ........................................................... 41
3. 2 Checking and Cleaning ................................................................42
3.2.1 Checking and Cleaning the Exterior ................................................... 43
3.2.2 Blowing Air on the PCBs..................................................................... 43
3. 3 Checks and Adjustments.............................................................44
3.3.1 Checking for Cover Open and Head Open Errors .............................. 44
3.3.2 Checking the Ribbon End Function .................................................... 45
3.3.3 Checking and Adjusting the I-mark Sensor and Gap Sensor ............. 46
3.3.4 Printing Quality.................................................................................... 50
3.3.5 Meandering ......................................................................................... 51
3.3.6 Checking and Adjusting the Print Position .......................................... 51
3.3.7 Checking the Stop Position................................................................. 51
3. 4 Final Check....................................................................................52
3.4.1 Checking Test Print with Factory Settings .......................................... 52
3.4.2 Checking the Customer’s Layout ........................................................ 52
3.4.3 Checking Barcode Scan ..................................................................... 52
3.4.4 Checking SOS Connection ................................................................. 53
3.4.5 Returning to the Original State............................................................ 53

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S84NX/S86NX Service Manual 3
4 Replacement ............................................................................ 54
4. 1 Notes on Replacing Parts ............................................................56
4. 2 Removing the Housing Cover .....................................................57
4.2.1 Opening the Rear Housing Cover....................................................... 57
4.2.2 Removing the Front Housing Cover.................................................... 68
4. 3 Printing Section ............................................................................70
4.3.1 Replacing the Print Head .................................................................... 70
4. 4 Paper Transfer Section ................................................................72
4.4.1 Replacing the Platen Roller ................................................................ 72
4.4.2 Replacing the Pressure roller Plate .................................................... 74
4.4.3 Replacing the Pressure Roller ............................................................ 75
4.4.4 Replacing the Media Feed Roller........................................................ 77
4.4.5 Replacing the Torque Limiter for Ribbon Spindle ............................... 79
4.4.6 Replacing the BF Spring for Ribbon Supply Spindle .......................... 81
4.4.7 Replacing the Ribbon Roller ............................................................... 84
4.4.8 Replacing the Gearbox ....................................................................... 86
4. 5 Sensors..........................................................................................87
4.5.1 Replacing the Media Sensor............................................................... 87
4.5.2 Replacing the Ribbon Sensor ............................................................. 91
4.5.3 Replacing the Ribbon End Sensor...................................................... 93
4.5.4 Replacing the Head Open Sensor ...................................................... 95
4.5.5 Replacing the Top Cover Sensor........................................................ 96
4. 6 PCBs and Electrical Parts............................................................98
4.6.1 Replacing the USB PCB ..................................................................... 98
4.6.2 Replacing the Main (CONT) PCB ..................................................... 100
4.6.3 Replacing the Power Supply Unit ..................................................... 102
4.6.4 Replacing the Fan Motor................................................................... 103
4.6.5 Replacing the Coin Battery ............................................................... 104
4. 7 Replacing the Timing Belt..........................................................105
4.7.1 Replacing the Timing Belt of Gearbox .............................................. 105
4.7.2 Replacing the Timing Belt of Ribbon Motors..................................... 108
4.7.3 Replacing the Timing Belt of Ribbon Unwind Mechanism ................ 110
4. 8 PCBs and Electrical Parts..........................................................113
4.8.1 Replacing the Operator Panel (KB) PCB .......................................... 113

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S84NX/S86NX Service Manual 4
5 Installation of Options........................................................... 115
5. 1 Replacing the W-LAN Kit ...........................................................116
5. 2 Installing the RFID Kit ................................................................119
6 Troubleshooting .................................................................... 128
6. 1 About Error Message .................................................................128
6. 2 Error Code List............................................................................129
6. 3 Error List......................................................................................131
6. 4 Status Icon List ...........................................................................143
7 Reference ............................................................................... 147

S84NX/S86NX Service Manual 5
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Introduction
1. 1 About This Manual
This service manual gives all the information necessary for you to adjust and repair the
S84NX/S86NX.
This service manual is written only for SATO authorized service personnel.
The information in this manual is confidential to general users.
For basic specification, installation, operation and configurations of the printer, refer to
the operator manual of the S84NX/S86NX.
Since all problems that may arise during adjustment and repair work cannot be
described in this document, service personnel should always pay attention to safety in
addition to the precautions described in this document.
1. 2 Safety Precautions
• Always power offthe printer and disconnect the AC power cord from the outlet before
you start any maintenance procedures including parts replacement.
• Wear a properly grounded static wrist strap as required during repair work.
• Wear proper gloves during adjustment and repair work.
• Do not touch the printing element with your bare hand when you replace the print
head (thermal head).
• Hold the circuit board on the sides. Do not touch the components or bend the circuit
board when you remove or install the circuit board.
• Do not touch the cutter with your hands, nor place objects into the cutter. Doing so
could cause an injury.
• The print head (thermal head) will become hot after printing. Be careful not to touch it
when replacing media or cleaning immediately after printing, to avoid being burned.

1 Introduction
S84NX/S86NX Service Manual 6
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1. 3 Parts Identification for the Product
1.3.1 Front View
(3)
(4)
(5) (2)
(1)
(1) Operator panel
(2) Top cover
(3) Power (I/O) switch
* Press this switch to power on (I) or power off(O) the product.
(4) Media discharge outlet
(5) USB connector (Type A)

1 Introduction
S84NX/S86NX Service Manual 7
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1.3.2 Rear View
(2)
(1)
(3)
(4)
(6)
(8)
(7)
(5)
(8)
(7)
(6)
(5)
(4)
(Right-Hand Type) (Left-Hand Type)
(1) Wireless LAN antenna * Optional
(2) Fan filter
(3)
AC input terminal
* Before connecting, make sure that the AC voltage of your region is in the range of AC 100 to
240 V, 50 to 60 Hz.
(4)
RS-232C connector
* You can also connect a barcode checker.
Usage of the RS-232C interface can be selected in the [Tools]
>
[Barcode Checker]
>
[Test]
>
[Interface] menu.
(5) LAN connector
(6) USB connector (Type A)
(7) USB connector (Type B)
(8) EXT connector (External signal interface)

1 Introduction
S84NX/S86NX Service Manual 8
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1.3.3 Internal View
(1)
(3)
(4)
(2)
(6)
(12)
(7)
(13) (14)
(10)
(8)
(5)
(11)
(9)
(1) Ribbon supply spindle
(2) Ribbon rewind spindle
(3) Ribbon roller
(4) Media guide
(5) Media sensor adjustment knob * Used to adjust the position of the media sensor.
(6) Feed lock latch * Used to open the feed roller and media sensor assembly.
(7) Feed roller and media sensor assembly
(8) Plate lock lever * Used to release the Pressure plate.
(9) Pressure plate * Consumables
(10) Head lock lever * Used to release the print head assembly.
(11) Print head * Consumables
Creates an image directly on the media or by using a ribbon. Clean the print head regularly.
(12) Feed roller * Consumables
(13) Pressure roller * Consumables
(14) Platen roller * Consumables