Intermec EasyCoder 501 – Service Manual Ed. 7
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Chapter 24 Print Quality Adjustment
Symptom Possible Cause Remedy Refer to
Overall weak printout Printhead pressure too low Adjust both knobs Chapter 24.3
Wrong Paper type setup Check/change Installation & Operation
Low Contrast setup Check/change Installation & Operation
Worn printhead Check/replace Chapter 8.7
Wrong printhead voltage Check/repair CPU Chapter 26.3
Adhesive build-up on printhead Clean Installation & Operation
Printout weaker on one side Uneven printhead pressure Adjust outer knob Chapter 24.3
Weak spots Foreign particles on media/ribbon Remove n.a.
Media/ribbon don't match Use other media Installation & Operation
Media fi bres on printhead Clean Installation & Operation
Poor media or ribbon quality Use other media Installation & Operation
Worn printhead Check/replace Chapter 8.7
Worn platen roller Check/replace Chapter 8.3
Overall dark printout Printhead pressure too high Adjust both knobs Chapter 24.3
Wrong Paper Type setup Check/change Installation & Operation
High Contrast setup Check/change Installation & Operation
Wrong printhead voltage Check/repair CPU Chapter 26.3
Excessive bleeding Printhead pressure too high Adjust both knobs Chapter 24.3
Wrong Paper Type setup Check/change Installation & Operation
Contrast setup too high Check/change Installation & Operation
Faulty energy control Check CPU board Chapter 26.3
Transfer ribbon breaks Ribbon fi tted around LSS Check/adjust n.a.
Wrong Paper Type setup Check/change Installation & Operation
Ribbon supply unit stuck Check/adjust Chapter 7.2
Bad energy control Check CPU board Chapter 26.3
White parts at transfer printing Transfer ribbon wrinkled Adjust See next paragraph
Transfer ribbon wrinkles Incorrect edge guide adjustment Adjust Installation & Operation
Ribbon obstructed by printhead cable Check/clear n.a.
Too strong printhead pressure Adjust both knobs Chapter 24.3
Bad ribbon assist roller adjustment Adjust Chapter 24.3
Supply bobbin not centered Adjust Chapter 7.2
Dark lines along media Foreign objects on printhead or guide plate Check/clean Installation & Operation
White lines along media Printhead dirty Check/clean Installation & Operation
Missing dots on printhead Replace printhead Chapter 8.7
Large part of dot line missing Wrong X-start or Width setup Check/change Installation & Operation
Failing printhead Check/replace Chapter 8.7
Failing strobe signal Check CPU-board Chapter 26.3
Last part of label missing Too small image buffer Check/increase Installation & Operation
Printout missing along inner edge Bad paper alignment Adjust Installation & Operation
X-start setup too low Check/increase Installation & Operatio
Media jams in printer Adhesive residue in print unit Clean Installation & Operation
Compressed print along media feed Too high release force required (501 LL) Change media Installation & Operation
Inferior ladder bar code printing EC 501 LL less suited for ladder bar codes Change the layout n.a.
Bad cutting or paper jams in LL cutter Adhesive residue inside linerless cutter Clean Chapter 12.3
Parts of media stuck inside linerless cutter Clean Chapter 12.3
Linerless cutter does not cut Safety switch defect or not activated Check arm is closed Chapter 12.3
Check switch Chapter 12.5
Wrong Fingerprint version (< v6.1) Check version Fingerprint manuals
Printer does not feed LTS erroneously detects label not taken Adjust LTS Chapters 11 & 12
24.2
Possible Printout Troubles