User Guide
Table Of Contents
- About This Document
- Contents
- Introduction
- Getting Started
- Print Operations
- Determining Printer Configuration
- Long Term Printer In-activity or Storage
- Thermal Printing
- Modes of Printing
- Print Media Types
- Replacing Supplies
- Adjusting the Print Width
- Adjusting the Print Quality
- Media Sensing
- Ribbon Overview
- Printing on Fan-Fold Media
- Printing with Externally Mounted Roll Media
- Fonts and Your Printer
- Stand Alone Printing
- Sending Files to the Printer
- Print Meter
- EPL Line Mode
- Printer Options
- Maintenance
- Troubleshooting
- Appendix: Interface Wiring
- Appendix: Dimensions
- Appendix: ZPL Configuration
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Maintenance
Replacing the Printhead
8/4/10 GK420t™ User Guide 980610-001 Rev. C
Replacing the Printhead
If you need to replace the printhead, read the procedure and review the removal and
installation steps before actually replacing the printhead.
Before following the steps in this procedure, open the printer by pulling the release latches
forward then lifting the top cover.
Printhead Removal
1.
Open the printer. Remove any transfer ribbon from the printer.
2.
Use a small flat bladed screwdriver to remove the ribbon guide. Gently pry the guide
right-side tab from the ribbon frame. Pull the left side of the ribbon guide out.
Caution •
Prepare your work area by protecting against static discharge. Your work area
must be static-safe and include a properly grounded conductive cushioned mat to hold the
printer and a conductive wrist strap for yourself.
Caution •
Turn the printer power off and unplug the power cord before replacing the
printhead.
Ribbon Guide
(and printhead cover)