Zebra QLn420 User's Guide download pdf (Page 59)

QLn Series User Guide

Troubleshooting Tests

Printing a Conguration Label

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

low these steps:

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.

Note • The conguration report can also be printed from the Info

(Help) menu on the LCD.

Refer to Figures 37a, b, and c for sample configuration print-

outs.

Communications Diagnostics

If there is a problem transferring data between the computer

and the printer, try putting the printer in the Communications

Diagnostics Mode (also referred to as the “DUMP” mode). The

printer will print the ASCII characters and their text represen-

tation (or the period ‘.’, if not a printable character) for any data

received from the host computer.

To enter Communications Diagnostics Mode:

1. Print a configuration label as described above.

2. At the end of the diagnostics report, the printer will print: “Press

FEED key to enter DUMP mode”.

3. Press the FEED key. The printer will print: “Entering

DUMP mode”.

Note • If the FEED key is not pressed within 3 seconds, the printer will

print “DUMP mode not entered” and will resume normal operation.

4. At this point, the printer is in DUMP mode and will print

the ASCII hex codes of any data sent to it, and their text

representation (or “.” if not a printable character).

Additionally, a file with a “.dmp” extension containing the

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Zebra QLn420 User's Guide Page 59