Chapter 3 — Replacing Parts
56 EasyCoder PD41/PD42 Printer Service Manual
The ribbon shield mechanism is located on the thermal printhead. It has
two adjustable screws, A and B, as shown below.
Ribbon Shield Adjustment Screws
If labels come out looking as depicted below, you may want to try adjusting
the ribbon shield.
Low Quality Printout: These bar codes show the results of ribbon wrinkling.
To adjust ribbon shield
1 If the label printout matches Test label A, turn screw A clockwise. If the
printout matches Test label B, turn screw B clockwise.
2 Twist the screw half a turn clockwise and perform a new test print.
3 Continue until you achieve a smooth printout quality.
Screw adjustment must not exceed two full turns or paper may not feed
smoothly. In such a case, turn the screws counterclockwise completely and
start over.
To reset ribbon shield to factory default setting
1 Tighten screws A and B (see above) so that the springs are fully
compressed. Be careful not to overdo it, as it may damage the threads.
2 Unscrew screws A and B 4 ½ turns.
B
A
1234567890
Test Label A
1234567890
Test Label B
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