Question about Zebra QL 420 Thermal Label Printer

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Need the output feed roller gear for the zebra ql 420 printer

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Zebra doesn't sell parts for the mobile printers. You will need to send it to Zebra repair.

Posted on Jul 01, 2009


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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
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Posted on Jan 02, 2017


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Getting blank page feeding while printing with Zebra ql420plus....but it is working with MZ320

I have experienced similar issues between two zebras. I found that the driver was the issue. I recommend:
  1. Confirm the operating system your using. [32 or 64 bit is important]
  2. remove old driver and install new driver from Zebra's support website.
  3. If you are still having issues after all that, I really must recommend contacting Zebra as your printer may be defective and may be under warranty for service or replacement.

Dec 23, 2014 | Zebra QL420 Thermal Printer

1 Answer

Need to have the print darker! /Zebra QL420Plus/ How can I set the darkness?

zgorbe723: The darkness is only setup via software. Adjust it in your Windows driver or including the heat command in your format:
CONTRAST n 'in CPL comtec syntax
^MD+n 'in ZPL zebra syntax

Roberto Martinez

Aug 31, 2011 | Zebra QL 420 Plus Thermal Label Printer

1 Answer

Need to have the print darker

Resolving Print Quality Issues on Performance Line PrintersCheck this link for your model solutions:

May 23, 2011 | Zebra QL 420 Plus Thermal Label Printer

1 Answer

How do I factory reset a QL420+ zebra printer?


Press and hold both the PAUSE key and FEED key while turning the printer power ON.

Release both keys anytime after the first front panel LED turns OFF.

The PAUSE and FEED keys together reset the printer to the default settings. These values

are not saved in EEPROM, but may be saved by sending the ZPL command ^JUS or

saving through the LCD on the deluxe front panel. After entering factory defaults, the

printer will remain in the paused state to let the operator know that the defaults have been


good luck, do rate the solution if got help

Dec 02, 2010 | Zebra QL 420 Thermal Label Printer

1 Answer

Trying to configure network settings on a QL 420...will not take certain info like the gateway

Check to ensure the printer has a network card installed. if not it looks like everything is working correctly in label vista but nothing "takes"

Jun 16, 2010 | Zebra QL 420 Plus Thermal Label Printer

1 Answer

Zebra QL 420+ wireless printer works only without cipher/TKIP

With Label Vista
  • Go to Printer Tab
  • Define the com Port settings (use serial or usb)
  • Go to Printer settings

in network tab :
  • Put your network configuration ( IP address or DHCP,submask, gateway; ESSID, port number .....)

In 802.1X WPA
  • Select WPA WPA2
  • Authentification PSK
  • Put the username and password in EAP section

Mar 16, 2009 | Zebra QL 420 Plus Thermal Label Printer

1 Answer

Can't connect via Bluetooth connection problem

print a configuration label from the printer to get the BT settings, you may need to use "label vista"(zebra) to configure it. the keys are generated based of the BT mac

Sep 15, 2007 | Zebra QL 420 Thermal Label Printer

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