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manual
P1052686-001 GC420t User Guide 22/2012
Troubleshooting
Status Light Error Resolutions
Appendix Interface Wiring
Dimension
Maintenance
Printing a Configuration Label
Print Quality Problems
Communications Diagnostics
Zebra KDU Printer Accessory
EPL Y Command
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P1052686-001
GC420t™ User Guide
5/22/2012
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Contents
Zebra GC420t
P1052686-001 GC420t User Guide 22/2012
Iii
FCC Compliance Statement
Contents
About This Document
Who Should Use This Document
How This Document Is Organized
Contacts
Mail Back Technical Library
Document Conventions
Icons Used
Contents
Print Operations
Appendix Dimensions
P1052686-001 GC420t User Guide 22/2012
Introduction
GC420t Thermal Printers
What’s in the Box?
Unpack and Inspect the Printer
Your Printer
Opening the printer
Printer Features
Operator Controls Power Switch
Feed Button
Status Light
Closing the printer
Contents
Getting Started
Attaching Power
Loading Roll Media
Preparing Media
Placing the Roll in the Media Compartment
Loading Roll Media
Guides
Loading Transfer Ribbon
Loading Transfer Ribbon
Loading Transfer Ribbon
Loading Transfer Ribbon
Printing a Test Printer Configuration Label
Pre-install Windows Printer Drivers
Universal Serial Bus USB Device Communications
Serial Port and Windows operating systems
Connecting your Printer to a Computer
Interface Cable Requirements
USB Interface Requirements
Serial Communications
Autobaud
EPL Y Command
Parallel Port
Testing Communications by Printing
After Your Printer is Connected
After Your Printer is Connected
Print Operations
Thermal Printing
Determining Printer Configuration
Long Term Printer In-activity or Storage
Modes of Printing
Print Media Types
Types of Media Roll and Fanfold Media
Adding a New Transfer Ribbon
Replacing Supplies
Determining Thermal Media Types
Replacing a Partially Used Transfer Ribbon
Adjusting the Print Width
Adjusting the Print Quality
Media Sensing
Coated Side of Ribbon
When to Use Ribbon
Ribbon Overview
Ribbon Test with Adhesive
Ribbon Scratch Test
Printing on Fan-Fold Media
Printing on Fan-Fold Media
Printing with Externally Mounted Roll Media
Externally Mounted Roll Media Considerations
Fonts and Your Printer
Localizing the Printer with Code Pages
Identifying Fonts in Your Printer
ZPL Fonts
Stand Alone Printing
Sending Files to the Printer Print Meter
Printer Options
Label Dispenser Option
XA MMP XZ
Label Dispenser Option
Label Dispenser Option
Zebra KDU Printer Accessory
KDU Plus Printer Accessory
ZBI 2.0 Zebra Basic Interpreter
ZBI 2.0 Zebra Basic Interpreter
Maintenance
Cleaning
See Cleaning the Printhead on
Cleaning the Printhead
Media Path Considerations
Sensor Cleaning
Platen Cleaning and Replacement
Maintenance
Other Printer Maintenance
Replacing the Printhead
Maintenance
Unplug both bundles of printhead wires from their connectors
Maintenance
Troubleshooting
Status Light Descriptions
Status Light Error Resolutions
Ribbon is out
Printhead is over temperature
Media is out
Printhead is open
Printed image does not look right
Print Quality Problems
No print on the label
Print Quality Problems
Is the printer in pause mode? If so, press the Feed button
Manual Calibration
Recalibration
Troubleshooting Tests
Printing a Configuration Label
Resetting the Factory Default Values
Communications Diagnostics
Communications Diagnostics
Feed Button Modes
Flash Sequence Action
Power On Modes
Feed Button Modes
Appendix Interface Wiring
Universal Serial Bus USB Interface
Parallel Interface
Host
Connecting the Printer to a DCE Device
Serial Port Interface
Appendix Dimensions
External GC420t Printer Dimensions
Optional Label Dispenser
External GC420t Printer Dimensions
Appendix ZPL Configuration
Managing the ZPL Printer Configuration
ZPL Printer Configuration Format
ZPL Configuration Status to Command Cross-reference
Configuration Label Printout
Default
65536k.......B only displays this if installed
Printer Memory Management and Related Status Reports
ZPL Programming for Memory Management
~WC
Printer Memory Management and Related Status Reports
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