Zebra Technologies
GC420t
manual
Optional Label Dispenser
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
Page 97
External GC420t™ Printer Dimensions
Optional: Label Dispenser
85
5/22/2012
GC420t™ User Guide
P1052686-001
Page 96
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Contents
Zebra GC420t
P1052686-001 GC420t User Guide 22/2012
Iii
FCC Compliance Statement
About This Document
Contents
How This Document Is Organized
Who Should Use This Document
Mail Back Technical Library
Contacts
Icons Used
Document Conventions
Contents
Print Operations
Appendix Dimensions
P1052686-001 GC420t User Guide 22/2012
Introduction
GC420t Thermal Printers
Unpack and Inspect the Printer
What’s in the Box?
Opening the printer
Your Printer
Printer Features
Operator Controls Power Switch
Status Light
Feed Button
Closing the printer
Getting Started
Contents
Attaching Power
Preparing Media
Loading Roll 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
Serial Port and Windows operating systems
Universal Serial Bus USB Device Communications
Interface Cable Requirements
Connecting your Printer to a Computer
USB Interface Requirements
Autobaud
Serial Communications
EPL Y Command
Parallel Port
After Your Printer is Connected
Testing Communications by Printing
After Your Printer is Connected
Print Operations
Long Term Printer In-activity or Storage
Determining Printer Configuration
Thermal Printing
Print Media Types
Modes of Printing
Types of Media Roll and Fanfold Media
Determining Thermal Media Types
Replacing Supplies
Adding a New Transfer Ribbon
Adjusting the Print Quality
Adjusting the Print Width
Replacing a Partially Used Transfer Ribbon
Media Sensing
Ribbon Overview
When to Use Ribbon
Coated Side of Ribbon
Ribbon Scratch Test
Ribbon Test with Adhesive
Printing on Fan-Fold Media
Printing on Fan-Fold Media
Externally Mounted Roll Media Considerations
Printing with Externally Mounted Roll Media
Localizing the Printer with Code Pages
Fonts and Your Printer
ZPL Fonts
Identifying Fonts in Your Printer
Stand Alone Printing
Sending Files to the Printer Print Meter
Printer Options
XA MMP XZ
Label Dispenser Option
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
See Cleaning the Printhead on
Cleaning
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
Media is out
Printhead is over temperature
Ribbon is out
Printhead is open
No print on the label
Print Quality Problems
Printed image does not look right
Print Quality Problems
Is the printer in pause mode? If so, press the Feed button
Manual Calibration
Printing a Configuration Label
Troubleshooting Tests
Recalibration
Communications Diagnostics
Resetting the Factory Default Values
Communications Diagnostics
Flash Sequence Action
Feed Button Modes
Power On Modes
Feed Button Modes
Appendix Interface Wiring
Universal Serial Bus USB Interface
Host
Parallel Interface
Serial Port Interface
Connecting the Printer to a DCE Device
Appendix Dimensions
External GC420t Printer Dimensions
Optional Label Dispenser
External GC420t Printer Dimensions
Appendix ZPL Configuration
ZPL Printer Configuration Format
Managing the ZPL Printer Configuration
Configuration Label Printout
ZPL Configuration Status to Command Cross-reference
Default
65536k.......B only displays this if installed
ZPL Programming for Memory Management
Printer Memory Management and Related Status Reports
~WC
Printer Memory Management and Related Status Reports
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