Zebra Technologies P420 user manual Print Quality Issues, Solution

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5.2 Print Quality Issues

This section will help you resolve print quality problems. The print quality is dependent on several factors. The two most important factors that will increase your print quality are cleanliness and card stock. To diagnose and fix print quality problems, follow the troubleshooting procedure below:

Small spots appear on the printed card with a non-printed area or a different color.

Possible Cause

A.Contamination on the card surface.

B. Dust inside the printer and/or dirty

Cleaning Roller.

ÞSolution

A1.Check that cards are stored in a dust free environment A2.Use a different supply of cards.

B1.Perform a Cleaning of the printer (see Cleaning section). B2.Replace Cleaning Roller (see Cleaning section).

·There are non-printing horizontal lines (white) on the card surfaces.

Possible Cause

A.Ribbons is not correctly positioned. B.Print Head may be dirty.

C.Print Head elements may have been damaged (e.g. scratched or burnt).

ÞSolution

A1.Open cover and press down the Print Head Unlock Lever to open the Print Head carriage. The Print Head will move up.

A2.Check that the ribbon is properly rolled onto the ribbon cores and there are no wrinkles in the ribbon.

A3.Push down on the Print Head Lock Lever until an audible «click» signals the locked-down position.

A4.Ribbon will automatically synchronize. A5.Print again.

B1.Perform a Cleaning of the Print Head (see 4.2 Cleaning the Print Head.) C1.Call service for Print Head replacement information.

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TROUBLESHOOTING

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Contents P420 Page Trademarks Return Materials AuthorizationForeword Copyright NoticeWarranty Information Declarations of ConformityIndustry Canada Notice P420 Printer Models IntroductionInjury IconsTable of Contents Viii Unpacking your card printer Getting StartedPrinter Driver Disk floppy or/and CD LED Indicators and ControlsPlace the printer’s power switch in the OFF Position Printer InstallationOperation Printer FeaturesLoading Ribbons Supply Spindle Card Feeder Loading CardsOperation Install Card Cleaning Cartridge Card Thickness Control Lever Rejected Card Box HOW to MaintainOperation Feeding one card at a time Printing a Test Card P420 LCD Menu Tree Printer Menu InformationReady Page Printing Sample Card Printing a Sample Card To install the P420 Printer Driver in Windows NT4.0 Printing a sample card Protect Your Factory Warranty CleaningHOW to Clean Cleaning SystemCleaning the Print Head When to Maintain Card Cleaning CartridgeSlot Interpreting LCD Display messages TroubleshootingPrinting Black Reject BOX Full Solution Print Quality Issues∙Printing shows very pale or inconsistent results ∙No printing on the card Technical Specifications Card Dimensions Electrical Technical Specifications Magnetic Card Stripe Encoder Appendix aMedia Loading Orientation Magnetic Encoder Cleaning Smart Card Contact Station Appendix BMedia Loading Orienta Tion Accessories & supplies Appendix CRibbons Cards Accessories 980292-001A