zenpert 4T520P Series User Manual page 30

Memory full
( FLASH / DRAM )
Poor Print Quality
Skip labels when printing
The printing position of small
label is incorrect
Missing printing on the left or
right side of label
Wrinkle problem
Gray line on the blank label
Irregular printing
* The space of FLASH/DRAM
is full.
* Ribbon and media is loaded
incorrectly
* Dust or adhesive
accumulation on the print
head.
* Print density is not set
properly.
* Printhead element is
damaged.
* Ribbon and media are
incompatible.
* The printhead pressure is not
set properly.
* Label size is not specified
properly.
* Sensor sensitivity is not set
properly.
* The media sensor is covered
with dust.
* Media sensor sensitivity is
not set properly.
* Label size is incorrect.
* The vertical offset setting in
the driver is incorrect.
* Wrong label size setup.
* The pressure of printhead is
not balanced on each side.
* Ribbon installation is
incorrect.
* Media installation is incorrect.
* Print density is incorrect.
* Media feeding is incorrect.
* The print head is dirty.
* The platen roller is dirty.
* The printer is in Hex Dump
mode.
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* Check your program if there is a command
PRINT at the end of the file and there
must have CRLF at the end of each
command line.
* Delete unused files in the FLASH/DRAM.
* Reload the supply.
* Clean the print head.
* Clean the platen roller.
* Adjust the print density and print speed.
* Run printer self-test and check the print
head test pattern if there is dot missing in
the pattern.
* Change proper ribbon or proper label
media.
* The print head mechanism does not latch
the print head properly.
* Check if label size is setup correctly.
* Calibrate the sensor by Auto Gap or
Manual Gap options.
* Clear the GAP/Black mark sensor by
blower.
* Calibrate the sensor sensitivity again.
* Set the correct label size and gap size.
* If using the software BarTender, please
set the vertical offset in the driver.
* Set the correct label size.
* Please set the suitable density to have
good print quality.
* Make sure the label guide touch the edge
of the media guide.
* Clean the print head.
* Clean the platen roller.
* Turn off and on the printer to skip the
dump mode.