FARGO electronic HDP820 - Manual (Page 122)

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HDP 800 Series Card Printer/Encoders Service Manual (Rev. 5.0) 108
Diagnosing the Image Problems
Resolving the Pixel failure problems
Symptom: A thin line or scratch travels the entire length of the card.
Step Procedure
1 Check the card stock for scratches. Replace the cards (as needed).
2 Examine the Printhead for visible damage.
3 Clean the Printhead.
a. Remove watches, rings, bracelets and other jewelry.
b. Open the Print Station.
c. Use a Printhead Cleaning Pen from the Printer Cleaning Kit to firmly wipe
back and forth across the surface of the Printhead.
d. Close the Print Station once the Printhead is completely dry.
4 Clean the Cleaning Rollers.
a. Open the Front Access Door of the Printer.
b. Depress the Cleaning Roller Lock.
c. Pull the Cleaning Roller Assembly out of the Printer.
d. Clean the rollers with one of the adhesive-backed Cleaning Cards from the
Printer Cleaning Kit.
e. Remove the card's adhesive backing paper and slide the card between the
rollers until all dust particles are removed.
f. Flip over the Cleaning Card to clean both the top and bottom Cleaning
Rollers. (Note: Alternatively, placing the assembly under lukewarm water
may clean the Cleaning Roller.)
g. Once cleaned, replace the Cleaning Roller Assembly and close the Front
Access Door.
Caution: Ensure that the Cleaning Roller Assembly is completely dry
before reinstalling into the Printer.
Continued on the next page