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
75
Troubleshooting
Print Quality Problems
8/4/10 GK420t™ User Guide 980610-001 Rev. C
A EPL label format was sent to, but not recognized by, the printer.
• Is the printer in pause mode? If so, press the Feed button.
• If the printer has label dispensing enabled, the printer may be waiting for the label to be
removed. The liner/web must be properly threaded through the label dispenser mechanism
(peeler) to correctly operate in label dispense mode, refer to Label Dispenser Option
on page 46.
• If the status LED is on or flashing, refer to What the Status Light is Telling You on page 70.
• Make sure the data cable is correctly installed.
• A communications problem has occurred. First, make sure that the correct
communications port (USB) on the computer is selected. Refer to Connecting your
Printer to a Computer on page 21 in the Getting Started section.