Wasp WPL618 Series User Manual page 66

SD card is unable to use
Poor Print Quality
Missing printing on the left or
right side of label
Gray line on the blank label
Irregular printing
Label feeding is not stable
(skew) when printing
Skip labels when printing
Wrinkle Problem
RTC time is incorrect when
reboot the printer
The left side printout position
is incorrect
* SD card is damaged.
* SD card doesn't insert
correctly.
* Use the non-approved SD
card manufacturer.
* 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.
* Wrong label size setup.
* The print head is dirty.
* The platen roller is dirty.
* The printer is in Hex Dump
mode.
* The RS-232 setting is
incorrect.
* The media guide does not
touch the edge of the media.
* Label size is not specified
properly.
* Sensor sensitivity is not set
properly.
* The media sensor is covered
with dust.
* Printhead pressure is
incorrect.
* Ribbon installation is
incorrect.
* Media installation is incorrect.
* Print density is incorrect.
* Media feeding is incorrect.
* The battery has run down.
* Wrong label size setup.
* The parameter Shift X in LCD
menu is incorrect.
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* Use the supported capacity SD card.
* Insert the SD card again.
* The supported SD card spec and the
approved SD card manufacturers,
please refer to section 2.2.3.
* 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.
* Adjust the printhead pressure
adjustment knob.
* The release lever does not latch the
printhead properly.
* Set the correct label size.
* Clean the print head.
* Clean the platen roller.
* Turn off and on the printer to skip the
dump mode.
* Re-set the Rs-232 setting.
* If the label is moving to the right side,
please move the label guide to left.
* If the label is moving to the left side,
please move the label guide to right.
* 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.
* Please refer to the next chapter.
* Please set the suitable density to have
good print quality.
* Make sure the label guide touch the
edge of the media guide.
* Check if there is a battery on the main
board.
* Set the correct label size.
* Press [MENU]  [SELECT] x 3 
[DOWN] x 5  [SELECT] to fine tune the
parameter of Shift X.