G Series GC Models: Calibrating the Printer

Article ID: 32097700

Details


 

Topic or Information

GC Series Printer Calibration

Applies To

GC420t, GC420d

Details

This information is useful for resolving issues such as:  

  • Feed Button Red Light Flashing
  • Prints, then skips a label or is skipping labels
  • Print is overlapping onto next label
  • Print position is drifting up and down on the labels
  • Labels stop printing in random locations
  • Prints labels then the red light starts to flash

 

Common Issues and Resolutions

Problem Resolution

Flashing Red Light

  • Check Media and Ribbon (if used) Loading 
    - Loading for Tear Off Read More>>
    -Loading for (Dispense) Peel Mode Read More>>  

    - (GC420T only) Ribbon Loading Read More>> 
    Note: Verify the ribbon core is fully seated on the supply spindle hub notches. The left side of the ribbon spool should have two notches on it. These notches should mate snuggly with the keyed areas to prevent a flashing red light error. Read More>>
     
  • Verify the correct setting is configured for the media type Read More>>
    - Use the MARK Sensor for media with a black bar on the backing
    - Use the GAP/NOTCH (Transmissive) Sensor for gap, notch or hole media
     
  • Perform Calibration Read More>> 
     
  • Try Defaulting the printer  Read More>>
    Default settings are non-continuous web so you'll have to reconfigure if using black mark media. 
     
  • If the problem persist a Media Sensor Profile can be sent to Tech Support for analysis Read More>>

    Note: Press the FEED Button after calibrating. If one label feeds each time pressed then the printer is properly calibrated. Verify Software/Driver settings are not changing the calibrated values or printer configurations.

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Labels are skipping or the print image is wandering


  • Check Media Loading and assure the guides are keeping the media aligned  
    - Loading for Tear Off Read More>>
    -Loading for (Dispense) Peel Mode Read More>>  
     
  • Verify the printer is set to the correct Media Type. If set to Continuous the printer will not track Top-of-Form. Read More>>
    - Use the MARK Sensor for media with a black bar on the backing
    - Use the GAP/NOTCH (Transmissive) Sensor for gap, notch or hole media 
     
  • Verify the labels are compatible with the media specifications Read More>>
     
  • Press the FEED Button. If one label feed each time pressed, check your label format or Driver/Software for the source of the problem. 

    Note: If you are using EPL Label Formats assure the label length is set correctly. A label length setting longer than the calibrated length will result in an extra label for each label printed.
     
  • Try Defaulting and verify printer has calibrated correctly Read More>>
     
  • Perform Manual Calibration Read More>> 
     
  • If the problem persist a Media Sensor Profile can be sent to Tech Support for analysis Read More>>
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Additional Information

Be aware that software or driver settings can override printer settings for Media Type, Label Length, etc.

If you are using Zebra Software or a driver with your printer

  • Using Zebra Designer Driver to set printer settings Read More>>
  • Using the Zebra Setup Utility to set printer settings Read More>>
  • See the ZPL II Programming Guide, if you are using ZPL code in an application. Read More>>
  • See EPL Programming Guide, if you are using EPL code in an application. Read More>>
  • For non-Zebra software or driver, contact the vendor's technical support.