Zebra QL Series Troubleshooting
No Power
- Check that the battery is installed properly
- Recharge or replace the battery as necessary
Media Does Not Feed
- Be sure that the print head cover is latched and closed
- Check spindle holding media for any binding
- If the unit is equipped with label presence sensor: Ensure most recent label is removed
Poor or Faded Print or Battery Light Flashing
- Clean print head
- Check battery and recharge or replace as necessary
- Check quality of media
Partial or Missing Print
- Check media alignment
- Clean print head
- Ensure print head is properly closed and latched
Garbled Print
- Check baud rate
No Print
- Check baud rate
- Replace battery
- Check cable to terminal
- Establish RF link (wireless units only) and/or restore LAN associativity (printers with WLAN radios only
- Invalid label format or command structure. Place the printer in Communications Diagnostic (Hex Dump) mode to diagnose the problem
Reduced Battery Charge Life
- Check the battery date code – if the battery is one or two years old, short charge life may be due to normal aging
- Recondition battery
- Replace battery
Skips Labels
- Check media for top of form sense mark or label gap
- Check that the maximum print field has not been exceeded on label
- Ensure bar or gap sensor is not blocked or malfunctioning
Communication Error
- Check that media is loaded, head is closed and error light is off
- Check the baud rate
- Replace cable to terminal
Label Jam
- Open head release latch and media cover
- Generously apply alcohol to printer in area of jammed label