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Problem
The printer is connected to a
serial port on the PC but the
printer is not working.
The printer boot up time is
slower than before.
Verifier Problems
Problem
Inconsistent barcode grading
Poor grading
Voiding good labels
Verifier is not functioning
Rmax is low
Minimum Edge Contrast low
grading
Symbol contrast low grading
Modulation low grading
Defects low grading
Decodability low grading
PX940 User Guide
Possible Solution
Try these possible solutions:
•
Make sure the serial port settings are configured correctly.
•
Make sure the serial cable pinouts are correct and that the
cable is not damaged.
•
If you have the Windows driver for an RS-232 printer installed
on your PC, uninstall the driver.
Try these possible solutions:
•
Remove the USB device or use a new (blank) USB
•
The printhead may be failing. If part of the dotted line is
missing, replace the printhead
Possible Solution
Avoid interfering with the printed media during verification
Try these possible solutions in order:
•
Clean the verifier glass and printhead
•
Calibrate the verifier
Adjust the verification passing grade
Check if the verification type is set to Read/No Read or ISO
15415/15416
Try these possible solutions in order:
•
Check the quality of the media
•
Use lighter non-glossy media
Try these possible solutions in order:
•
Use a lighter, non-glossy media
•
Increase barcode size-X dimension
Try these possible solutions in order:
•
Make sure that your print quality setting is appropriate for the
type of media that you are using.
•
The printhead pressure may be too low; increase printhead
pressure
•
Typical Rmin value for Direct Thermal media is 10-20% and
Thermal Transfer media is less than 5%
Try these possible solutions in order:
•
Use a lighter, non-glossy media
•
Increase barcode size-X dimension
Try these possible solutions in order:
•
Make sure that your print quality setting is appropriate for the
type of media that you are using.
•
The printhead pressure may be too low; increase printhead
pressure
•
There may be foreign particles on the media. Clean or replace
the media
•
The printhead may be dirty. Clean the printhead.
Make sure that your print quality setting is appropriate for the
type of media that you are using.
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