TSC PEX-1121 Series, User Manual, Page: 84 / 95

79
Poor Print Quality
* 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.
* Reload the supply.
* Clean the print head.
* Clean the platen roller.
* Adjust the print density and print speed.
* Run 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.
Missing printing on the left or
right side of label
* Wrong label size setup. * Set the correct label size.
Gray line on the blank label
* The print head is dirty.
* The platen roller is dirty. * Clean the print head.
* Clean the platen roller.
Irregular printing
* The print engine is in Hex Dump mode.
* The RS-232 setting is incorrect. * Turn off and on the print engine to skip the dump mode.
* Re-set the Rs-232 setting.
Label feeding is not stable
(skew) when printing
* The media guide does not touch the edge
of the media.
* 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.
Skip labels when printing
* Label size is not specified properly.
* Sensor sensitivity is not set properly.
* The media sensor is covered with dust.
* 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.
Wrinkle Problem
* Printhead pressure is incorrect.
* Ribbon installation is incorrect.
* Media installation is incorrect.
* Print density is incorrect.
* Media feeding is incorrect. * 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.
RTC time is incorrect when
reboot the print engine
* The battery has run down. * Check if there is a battery on the main board.
The left side printout position is
incorrect
* Wrong label size setup.
* The parameter Shift X in LCD menu is
incorrect.
* Set the correct label size.
* Press [MENU]

[SELECT] x 3

[DOWN] x 5

[SELECT] to fine tune the parameter of Shift X.