Specifications

33
Troubleshooting
Print Quality Problems
Rev. A KR403
Application User Interface
With the printer power on, press and hold the feed button. Continue holding the feed
button until the status indicator flash sequence occurs. The next flash sequence occurs
after completion of the previous flash sequence. The flash sequences perform the
following functions:
Printer status is also reported during normal operation when an error occurs, or a status
request can be sent to the printer via the Windows driver. for error codes reported by the
Windows driver.
Print Quality Problems
No print on the label.
• The media may not be direct thermal media, or the thermal media coating is not facing
upward.
• Is the media loaded correctly? Is the thermal media coating facing upward?
• The printhead may be dirty or damaged.
• The printhead is dirty. Clean the printhead. Refer to the Service Manual
(P1028249) for instructions.
• The printhead is damaged. Replace the printhead. Refer to the Service Manual
(P1028249) for instructions.
• The printhead wiring may be damaged or not connected properly.
• Check the wiring connections at the printhead and the main logic board.
• Check for damage to the wiring. Replace the wiring if damaged.
Table 3-2 • Application User Interface
Status Flash
Sequence
Action
One Flash, then Solid
Green
Appears for one second. This will print an internal self-test
page.
Two Flash, then Solid
Green
Appears for one second. Performs system calibration – must
be started with paper out of presenter and from under
printhead, and with no error signaled.
Three Flash, then
Solid Green
Appears for one second. Performs a simulated USB cable
connect and reconnect causing a USB plug-and-play event to
occur.
Four Flash, then Solid
Green
Appears for one second. Sets all printer settings to the default
with the exception of media guide calibration, then it will
perform the media guide calibration.
Five Flash, then Solid
Green
Appears for one second. Prints a 50% gray pattern, ejects it
and then prints a diagonal line pattern and ejects it.
If the feed button remains pressed after the five flash sequence, the status light goes off.