18.
Label prints fuzzy or is not dark enough
Reasons:
a. Printer head has not been fastened well
b. Thermal head is dirty
c. Print density is too low
Solutions:
a. Re-fasten the printer head well
b. Wipe the thermal head gently with a soft cloth dipped in alcohol
c. Increase print density
Print a label with half clear and half fuzzy or even blank.
Reasons:
a. Printer head has not been fastened well
b. Thermal head is dirty
c. The print head is deformed
d. Motherboard failure
e. Poor or damaged head piece wiring harness
Solutions:
a. Re-fasten the printer head well.
b. Gently wipe the thermal head with a soft cloth dipped in alcohol.
c. If the problem still can’t be solved by above method, then cause of the
error is the print head deformation, need to change printer.
Bad printer should be handled by a trained professional.
d. Replace the motherboard
e. Re-plug and replace the head piece wiring harness
f. Wash the thermal head by rotating orange handle to open the print
head (Fig. 20), dip a soft, dry cloth in alcohol and wipe the thermal
head. (Fig. 21)
d. The photoelectric module behind the printer is bad
Solutions:
a. Adjust the settings in following key order on the scale
[SETTING] → Enter the system setting → Press hotkey [ S ] → Enter the select label type
(0: Label, 1: Receipt, 2: Label, without recycle paper roll) → Press [PRN/ENTER]
It’s also available to adjust software on computer. Open label scale 334PCSP30T, set paper
type to “Label” in set function,then download the setting to the error scale.
b. Check whether printer rear photoelectric has slanting direction or is dusty.
c. If the problem still can’t be solved, consider changing photoelectric module.
It is better to have a technician handle this step.
d. Wash the rubber roller:
1. Loosen switch wrench and recycle paper spring, remove print paper.
(Fig. 17)
2. Set label scale as paper feed menu, long press
paper feed menu and let rubber covered roller
in idle status. (Fig. 18)
3. Take a clean cotton swab, dip in alcohol,
and clean the roller back and forth. (Fig. 19)
FIG. 17
FIG. 19
FIG. 20
FIG. 21
FIG. 18