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DTC400/DTC300/DTC300M Card Printer Service Manual (Rev. 1.3)
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Diagnosing Image Problems
Resolving the Pixel Failure problems
All Troubleshooting procedures assume that only factory-authorized supplies are in use in
the Printer.
Step Procedure
1 Review the following information.
• Symptom: A thin line or scratch travels the entire length of the card (See
sample image below).
• Printer Error State: None
• LCD Error Display: None
• Driver Monitor Error Display: None
2 Check the card stock for scratches. Replace the cards (as needed).
3 Examine the Printhead for visible damage.
4 Clean the Printhead. See the Cleaning the Printhead procedure.
5 Replace the Printhead if the problem persists. See Replacing the Printhead
Assembly (D900023).