Zebra Printer ZD421

Clean as needed to improve label dispenser operations.

Cleaning the Label Dispenser Option

For the cleaning supplies to use to clean the label dispenser.

1. Open the door and clean the peel bar, the inner surfaces, and the ridges on the door using a clean swab or lint-free cloth lightly moistened with 99% pure isopropyl alcohol.

2. Rotate the roller and wipe its surfaces.

4. Use a new swab or cloth to remove any diluted residue.

5. Clean the sensor window thoroughly until it is clear of streaks and residue.

CAUTION: Cleaning the roller with solutions or rubbing the delicate surface of this type of roller will permanently damage or shorten the usable life of the linerless platen.

Check if there is a build-up of particles on the platen roller.

If there is a build-up of particles, use the adhesive side of a piece of linerless media to gently press and remove the particles from the platen roller.

Check if the linerless media is sticking and binding in the printer.

If the linerless media is sticking and binding in the printer, the silicon non-stick coating may have been used up. In this case, the linerless platen normally needs to be replaced.

Select the color of the linerless platen roller

Sign off on the cleaning of the linerless platen (drive) roller.

Clean thoroughly as needed with fiber-free cleaning swabs and cloths moistened with 99.7% pure isopropyl alcohol. Let the alcohol evaporate completely.

Use a cleaning swab and or a lint-free cloth to remove debris, dust or crust that has built-up on the holders, guides, and the media path surfaces.

Lightly moisten the swab or cloth with 99.7% pure medical-grade alcohol.

For hard-to-clean areas, use extra alcohol on a cleaning swab to soak the debris to break up any adhesive that may have accumulated on surfaces in the media compartment.

IMPORTANT: Do NOT clean the printhead, movable sensor, or platen as part of this process.

Cleaning the Media Path – Lower Half of ZD421/ZD621 Printers

The lower half of all printer models covered in this guide get cleaned the same way, as described in this procedure.

IMPORTANT: Do NOT clean the printhead, sensors, or platen as part of this process.

1. Wipe the inside surfaces of the roll holders and the underside of the media guides with either wipes or cleaning swabs lightly moistened with 99.7% pure isopropyl alcohol. Use extra alcohol if necessary to soak accumulated debris for removal.

Warning: This maintenance check requires trained personnel with PPE!

IMPORTANT: Contaminants on the platen roller can damage the printhead or cause the media to slip or stick when printing. Adhesive, dirt, general dust, oils and other contaminants should be cleaned PROMPTLY off the platen.

CAUTION: When cleaning Linerless Platens, do NOT wash or scrub. Washing or scrubbing may damage the platen. Remove adhesive particles ONLY using the adhesive side of linerless media.

Open the cover (and if a label dispenser is installed. the dispenser door).

Pull the platen-bearing latch release tabs on the right and left sides towards the front of the printer and rotate them up.

Lift the platen out of the printer’s bottom frame.

Slide the gear and the two bearings off the shaft of the platen roller.

Clean the platen with a fiber and lint free swab (such as a Texpad swab) or a lint-free, clean, damp cloth very lightly moistened with 99.7% pure. medical-grade isopropyl alcohol.

Clean as needed using a soft cloth, brush, or compressed air to wipe or blow dust and particles out of the printer.

The exterior of the printer can be cleaned using plain soap and water solutions to moisten the cloth. Only use the minimum amount of cleaning solution to avoid getting solution in the printer or other areas. Do NOT clean connectors or interior of the printer with this method.

The latest healthcare printer models now include ultraviolet (UV) and disinfectant-ready plastics for hospital and other similar environments.

The printer user interface controls are sealed so they can be cleaned with the rest of the printer’s exterior. See the Guide To Disinfecting and Cleaning Zebra Healthcare Printers on the Zebra website at zebra.com/support for the latest information on tested and approved cleaning materials and cleaning methods.