Zebra Technologies Corporation MD-QL3021 用户手册

QL 420 User’s Guide

41

To print out a listing of the printer’s current configuration follow

these steps:

• Check media is loaded and print head is closed and

securely latched.

• 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

• Check media is loaded, head is closed and error

light is off.

• Check baud rate.
• Replace cable to terminal.

• Open head release latch and media cover.
• Generously apply alcohol  to printer in area of

jammed label.

• No application loaded or application corrupted: reload

program.

1. Turn the printer off.  Load the media compartment with

journal media (media with no black bars printed on the
back)

2. Press and hold the Feed Button.
3. Press and release the Power button and keep the Feed

button pressed.  When printing starts, release the Feed
button.