Zebra Technologies Corporation MD-QL3021 用户手册
44
QL 420 User’s Guide
Communications Diagnostics
If there’s a problem transferring data between the computer
and the printer, try putting the printer in the Communications Di-
agnostics Mode (also referred to as the “DUMP” mode). The
printer will print the ASCII characters and their and their text rep-
resentation (or the period ‘.’, if not a printable character) for any
data received from the host computer
agnostics Mode (also referred to as the “DUMP” mode). The
printer will print the ASCII characters and their and their text rep-
resentation (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 on pg. 40.
2. At the end of 2nd diagnostics report, the printer will print:
2. At the end of 2nd 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.
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 rep-
resentation (or “.” if not a printable character).
resentation (or “.” if not a printable character).
Additionally, a file with a “.dmp” extension containing the ASCII
information will be created and stored in the printer’s memory. It
can be viewed, “cloned” or deleted using the Label Vista applica-
tion. (Refer the Label Vista documentation for more information.)
can be viewed, “cloned” or deleted using the Label Vista applica-
tion. (Refer the Label Vista documentation for more information.)
To terminate the Communications Diagnostics Mode and return
the printer to normal operations:
1. Turn the printer OFF.
2. Wait 5 seconds.
3. Turn the printer ON.
2. Wait 5 seconds.
3. Turn the printer ON.
Calling the Help Desk
If the printer fails to print the configuration label, or you encoun-
ter problems not covered in the Troubleshooting Guide, contact
the Help Desk. Help Desk addresses and phone numbers for
your area can be found in Appendix D of this manual. The Help
Desk will need the following information:
the Help Desk. Help Desk addresses and phone numbers for
your area can be found in Appendix D of this manual. The Help
Desk will need the following information:
• Model number/type (e.g. QL 420)
• Unit serial number (Found on the large label on the back
• Unit serial number (Found on the large label on the back
of the printer, also found in the configuration label printout.
Refer to Figures 19 and 19a)
Refer to Figures 19 and 19a)
• Product Configuration Code (PCC) (15 digit number found
on the small label on the back of the unit)