User Manual
Table Of Contents
- About This Document
- Contents
- Introduction
- Getting Started
- Print Operations
- Determining Printer Configuration
- Thermal Printing
- Modes of Printing
- Print Media Types
- Replacing Supplies
- Adjusting the Print Width
- Adjusting the Print Quality
- Media Sensing
- 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
- Control Panel Operation
- Maintenance
- Troubleshooting
- Appendix
69
Maintenance
Cleaning
6/4/08 GX420d User Guide 980611-001 Rev. B
Cleaning the Printhead
Always use a new cleaning pen on the printhead (an old pen carries contaminants from its
previous uses that may damage the printhead).
When you load new media, you can also clean the printhead.
1. Rub the cleaning pen across the dark area of the printhead. Clean from the middle to the
outside. This will move adhesive transferred from the edges of media to the printhead
outside of media path.
2. Wait one minute before closing the printer.
Caution • The printhead becomes hot while printing. To protect from damaging the
printhead and risk of personal injury, avoid touching the printhead. Use only the cleaning
pen to perform maintenance.