RW, QL Plus, P4T - Blank LCD Screen

Article ID: 87523758




Blank LCD screen on printer when unit powers on

Applies To

All Zebra Mobile Printers

Cause or Overview

The INDEX.WML file controls the LCD display. If this file is not saved on the printer or if the file is invalid, the LCD may be blank.


Printers with the LCD control panel option use the WML language to create screens or "cards" for the display.  If this file is not present on the printer, or if the file is invalid, the LCD display may be blank.  A file listing (File directory)  is provided when performing a two key test on the printer.  The WML language is explained in detail in the CPCL Mobile Printing Systems Programming manual.  You should see the "index.wml" file within the file directory.

Printing a two key test  Read More>>

You can attempt to correct this issue by sending a new index.wml file to the printer and then rebooting the printer (power off and then back on).  

Helpful information

Sending Files to Printer Read More>>

CPCL Programming Guide  Read More>>


+ Product Codes

  • MZ Series
  • Mobile Printers
  • P4T Mobile Printers
  • P4T Mobile Printers
  • QL Plus Series Mobile Printers
  • QL Series Mobile Printers
  • QL320 Mobile Printer
  • QL420 Mobile Printer
  • QLn Series Healthcare Mobile Printers
  • QLn Series Mobile Printers
  • QLn220 Healthcare
  • QLn220 Mobile Printer
  • QLn320 Healthcare
  • QLn320 Mobile Printer
  • QLn420 Mobile Printer
  • RW 220 Mobile Printer
  • RW 420 Mobile Printer
  • RW 420 Print Station
  • RW Series Mobile Printers
  • ZQ500 Series Mobile Printers
  • ZQ510 Mobile Printer
  • ZQ520 Mobile Printer
  • ZR600 Series Healthcare Mobile Printers
  • ZR600 Series Mobile Printers
  • iMZ Series Mobile Printers
  • iMZ220 Mobile Printer
  • iMZ320 Mobile Printer