NCR 7193 Manual de usuario
BD20-1440-A
Issue B
August 1998
NCR 7193 Thermal Receipt
Printer
Service Guide
The product described in this book is a licensed product of NCR Corporation.
It is the policy of NCR Corporation (NCR) to improve products as new technology, components, software, and firmware
become available. NCR, therefore, reserves the right to change specifications without prior notice.
All features, functions, and operations described herein may not be marketed by NCR in all parts of the world. In some
instances, photographs are of equipment prototypes. Therefore, before using this document, consult with your NCR
representative or NCR office for information that is applicable and current.
To maintain the quality of our publications, we need your comments on the accuracy, clarity, organization, and value of this
book.
Address correspondence to:
Retail Systems Group−Atlanta
NCR Corporation
2651 Satellite Blvd.
Duluth, GA 30136
Copyright © 1997
By NCR Corporation
Dayton, Ohio U.S.A.
All Rights Reserved
7193 Service Guide Contents
August 1998 vii
Contents
Chapter 1: About the 7193 Printer 1
Models........................................................................................................................................ 1
Communication Interfaces................................................................................................ 1
Features ...................................................................................................................................... 2
Options....................................................................................................................................... 2
Thermal Printhead.................................................................................................................... 2
Cleaning the Printer.................................................................................................................. 3
Cleaning the Cabinet ......................................................................................................... 3
Cleaning the Thermal Printhead...................................................................................... 3
Chapter 2: Installing the Printer 5
What Is in the Box? ................................................................................................................... 5
Removing the Printer ........................................................................................................ 5
Repacking the Printer........................................................................................................ 5
Choosing a Location ................................................................................................................. 6
Setting Switches......................................................................................................................... 6
RS-232C Switch Settings.................................................................................................... 8
Parallel Switch Settings..................................................................................................... 9
LCSIO (RS-485) Switch Settings..................................................................................... 10
Connecting Cash Drawer Cables .......................................................................................... 11
Connecting Communication and Power Cables................................................................. 12
RS-232C and LCSIO (RS-485) Models ........................................................................... 12
Parallel Models.................................................................................................................13
Turning On the Printer........................................................................................................... 14
Testing the Printer................................................................................................................... 15
Models Receiving Power from the Power Supply (Remote)...................................... 15
Models Receiving Power from the Host (Integrated) ................................................. 15
Mounting the Printer on a Wall............................................................................................. 17
Mounting the Power Supply on a Wall................................................................................ 19
Chapter 3: Diagnostics 21
Level 0 Diagnostics ................................................................................................................. 21
Level 1 Diagnostics ................................................................................................................. 22
Setting Data Error and Data Buffer options ................................................................. 23
Setting Printhead Resistance .......................................................................................... 24
Setting Default Lines per Inch........................................................................................ 25
Setting Partial Cut Distance............................................................................................ 26
Setting the 7150 Response Mode.................................................................................... 27
Ignoring/Using the Carriage Return............................................................................. 28
Running the Data Scope Mode....................................................................................... 28
Testing Receipt Printing.................................................................................................. 30
Level 2 Diagnostics ................................................................................................................. 31
Level 3 Diagnostics ................................................................................................................. 31
Contents 7193 Service Guide
August 1998viii
Chapter 4: Troubleshooting 33
Operator Panel Lights............................................................................................................. 33
Field Effect Transistors (FETs))............................................................................................. 34
Operating Problems................................................................................................................ 35
Electronic Problems ................................................................................................................ 37
Printing Problems ................................................................................................................... 37
Chapter 5: Disassembling and Reassembling the Printer 39
Getting Started......................................................................................................................... 39
Tools................................................................................................................................... 39
Removing the Receipt Cover.......................................................................................... 40
Removing the L Cover..................................................................................................... 41
Removing the Print Mechanism and PC Board Assembly................................................ 42
Separating the Print Mechanism and PC Board Assembly ............................................... 44
Disconnecting Cables....................................................................................................... 45
Disassembling the Print Mechanism .................................................................................... 46
Removing the Knife Assembly....................................................................................... 46
Replacing the Knife Assembly ....................................................................................... 47
Removing the Printhead ................................................................................................. 48
Replacing the Printhead.................................................................................................. 49
Removing the Knife Motor............................................................................................. 49
Replacing the Knife Motor.............................................................................................. 50
Removing the Switches................................................................................................... 50
Replacing the Switches.................................................................................................... 51
Removing the Paper Feed Motor................................................................................... 51
Replacing the Paper Feed Motor.................................................................................... 51
Disassembling the PC Board Assembly............................................................................... 52
Removing the ESD/EMC Shield.................................................................................... 52
Replacing the ESD/EMC Shield .................................................................................... 52
Replacing the Print Mechanism ............................................................................................ 53
Replacing the PC Board Assembly on the Print Mechanism ..................................... 53
Reconnecting the Cables and Harnesses....................................................................... 53
Replacing the Print Mechanism ............................................................................................ 54
Finishing Up ............................................................................................................................ 54
Replacing the L-Cover..................................................................................................... 54
Replacing the Receipt Cover........................................................................................... 54
Checking out the Printer................................................................................................. 54
Appendix A: Specifications 55
Features .................................................................................................................................... 55
Reliability ................................................................................................................................. 55
Environmental Conditions..................................................................................................... 55
Power Requirements............................................................................................................... 56
Dimensions and Weight......................................................................................................... 56
Printing Specifications............................................................................................................ 57
Density of Receipt Print Lines............................................................................................... 58
Duty Cycle Restrictions (Printing Solid Blocks).................................................................. 58
7193 Service Guide Contents
August 1998 ix
Appendix B: Ordering Paper and Supplies 59
Ordering Thermal Paper........................................................................................................ 59
Ordering Other Supplies........................................................................................................ 60
Order from Other Equipment Manufacturers.............................................................. 60
Order from Axiohm......................................................................................................... 60
Appendix C: Kits 61
Appendix D: Connectors 63
Power Connector..................................................................................................................... 63
RS-232C Connector ................................................................................................................. 63
RS-232C 25-Pin to 9-Pin Cable Diagram ....................................................................... 64
RS-232C 9-Pin to 9-Pin Cable Diagram ......................................................................... 64
Parallel Connector................................................................................................................... 65
LCSIO (RS-485) Connectors................................................................................................... 65
Powered from Host.......................................................................................................... 65
Powered from Power Supply......................................................................................... 66
Cash Drawer Connectors....................................................................................................... 66
Appendix E: Commands 67
Command List......................................................................................................................... 67
Printer Function Commands.......................................................................................... 68
Print Characteristics Commands ................................................................................... 69
Graphics Commands....................................................................................................... 70
Printer Status Commands............................................................................................... 70
Real Time Commands ..................................................................................................... 70
Bar Code Commands....................................................................................................... 71
Index 73
Contents 7193 Service Guide
August 1998x
7193 Service Guide Chapter 1: About the 7193 Printer
August 1998 1
Chapter 1: About the 7193 Printer
The 7193 thermal receipt printer is fast, quiet, and very reliable. With thermal printing
technology, there is no ribbon cassette to change, and paper loading is extremely simple.
The printer is small enough to fit almost anywhere and is easy to use with the receipt
exiting from the top. There is no journal as it is kept electronically by the host system.
Models There are several models of the 7193 depending on the communication interface and the
combination of options selected.
Communication Interfaces
•RS-232C
•Parallel
•LCSIO (RS-485)
See “Appendix D: Connectors” later in this book or the Owner's Guide for more
information.
Chapter 1: About the 7193 Printer 7193 Service Guide
August 19982
Features All models come with the following features:
•Drop-in paper loading which does not require using a spindle or threading the paper
through a paper path
•Host-selectable 44 or 56 columns of print on 80 mm wide “fax grade” thermal paper
•Two resident selectable character sets:
•PC Code Page 437 (US)
•PC Code Page 850 (Multilingual)
•16K RAM available for downloadable character sets and bit-mapped graphics
•4K buffer (RS-232C and Parallel)
•History EEROM
•Speaker
•Resident bar codes
•Code 39
•UPC-A
•UPC-E
•JAN8 (EAN)
•JAN13 (EAN)
•Interleaved 2 of 5
•Codabar
•Code 128
Options The following options are available:
•Remote power supply with wall-mount kit
•Standard with RS-232C and Parallel interface models
•Optional with LCSIO (RS-485) models: these models may be powered through the
remote power supply or through the host system
•Paper cutter
•Cash drawer drivers: will open a separately purchased cash drawer under software
command (RS-232C and Parallel only)
•Wall-mount kit for hanging the printer on a wall
Thermal Printhead
The 7193 uses a thermal printhead which is extremely fast and quiet. Because it uses heat
to print directly on paper, there is no cassette or ribbon to change, eliminating soiled
fingers and paper dust.
The printhead is designed for a very long life, but it may be replaced if needed. See
“Troubleshooting” later in this book for information on when to replace the printhead. See
“Removing the Printhead” in “Disassembling and Reassembling the Printer” later in this
7193 Service Guide Chapter 1: About the 7193 Printer
August 1998 3
book for instructions on replacing the printhead. See “Cleaning the Printer” later in this
chapter for cleaning instructions for the printhead.
Cleaning the Printer
Cleaning the Cabinet
Clean the cabinet as needed to remove dust and finger marks. Use any household cleaner
made for plastics, but test it first on a small unseen area. If the receipt paper bucket is dirty,
wipe it with a clean, damp cloth. The cabinet materials and finish are durable and are
resistant to the following items:
•Cleaning solutions
•Lubricants
•Fuels
•Cooking oils
•Ultraviolet light
Cleaning the Thermal Printhead
If the printhead appears dirty, clean it with cotton swabs and rubbing alcohol.
Caution: Do not spray the thermal printhead with household cleaner as this may damage
it and the electronics.
If spotty or light printing problems persist after cleaning the thermal printhead, contact
your NCR authorized service representative.
Note: The thermal printhead does not normally require cleaning if the recommended
paper grades are used. If non-recommended paper has been used for an extended period
of time, cleaning the printhead with the alcohol pen will not be of much benefit.
If this is the case, the printhead will need to be changed. See “Removing the Printhead” in
“Disassembling and Reassembling the Printer” later in this book for instructions on
replacing the printhead.
Chapter 1: About the 7193 Printer 7193 Service Guide
August 19984
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