M7 SERIES
Thermal Printer Service Manua
l
46
46
Adjust the print head pressure adjustment knob
The print head pressure adjustment knob has 5
levels of settings. Clockwise direction adjustment is
to increase the print head pressure. Counter
Clockwise adjustment can decrease the print head
pressure.
If the wrinkle on the label starts from the lower left
side to upper right side, perform the following
adjustment.
1. Decrease the right side print head pressure
adjustment knob setting 1 level per each
adjustment. Print the label again to check if the
wrinkle (missing print) is gone.
2. If the right side print head adjustment knob setting
has been set to index 1 (the lowest pressure
index), increase the left side print head pressure.
Adjust the print head pressure adjustment knob
The print head pressure adjustment knob has 5
levels of settings. Clockwise direction adjustment is
to increase the print head pressure. Counter
Clockwise adjustment can decrease the print head
pressure.
If the wrinkle on the label starts from the lower right
side to upper left side, perform the following
adjustment.
1. Decrease the left side print head pressure
adjustment knob setting 1 level per each
adjustment then print the label again to check if the
wrinkle (missing print) is gone.
2. If the left side print head adjustment knob level
has been set to index 1 (the lowest index),
increase print head pressure on the right side.
3. If the left side print head adjustment knob setting
has been set to 5 (the highest pressure index) and
the wrinkle can’t be avoided, rotate both knobs
back to setting 1. Rotate the Z-axis mechanism
adjustment knob clockwise for a few degrees and
print again. Repeat previous steps to fine-tune the
print head pressure.
Z axis mechanism
adjustment knob
Left knob
Right knob
Left knob
Right knob
Note for step 3:
*Factory default setting, the Z-axis knob is rotated counter clockwise to the end of thread.
*Turn the Z-axis mechanism adjustment knob clockwise until you feel the knob touch the mechanism for the first adjustment.
* If the wrinkle is still there, adjust the Z-axis mechanism knob clockwise about 1/4 circle each time for
adjustment.
* If adjusting the Z-axis mechanism adjustment knob changes the winkled direction, turn the knob counter clockwise to avoid the
wrinkle.
