Zebra Printer ZD620

Dust can accumulate on the media sensors and must be cleaned periodically.

NOTE: Do NOT use an air compressor to remove dust. The action of air compressors tends to add moisture, fine grit, and lubricant which can contaminate your printer.

Cleaning the Sensor – Lower Half of the ZD620/ZD420 Printers

The lower half of all ZD620/ZD420 model printers are all cleaned the same way. Use this procedure to clean the sensor window.

1. Clean the window of the movable sensor by gently brushing away dust or using a can of compressed air. If necessary, use a dry swab to brush away dust.

2. If adhesives or other contaminants remain, use a swab moistened with 99% pure isopropyl alcohol to break them up. Discard the used swab(s).

3. Use a dry swab to remove any residue that may be left from the first cleaning.

4. Repeat the preceding steps as required until all residue and streaks are removed from the sensor.

Cleaning the Sensor – Upper Half of ZD620/ZD420 Direct Thermal Printers

Clean thoroughly as needed with fiber-free cleaning swabs and cloths moistened with 99% isopropyl alcohol. Let 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% solution 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 All ZD620 / ZD420 Printers

The lower half of all the ZD620 / ZD420 printer models 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 a cleaning swabs lightly moistened with 99% pure isopropyl alcohol solution and wipes. Use extra alcohol if necessary to soak accumulated debris for removal.

2. Wipe the inside surfaces of the roll holders and the underside of the media guides with a swab.

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 for build-up of particles on the platen roller

If particles are observed, proceed to the next step. If not, skip to step 6.

Upload a photo of the adhesive particles on the platen roller

Were you able to remove the adhesive particles using the adhesive side of a piece of linerless media?

Is the linerless media sticking and binding in the printer?

If yes, the silicon non-stick coating may have been used up and 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

Warning: Use 99% pure isopropyl alcohol for cleaning

Peel bar, inner surfaces, and ridges on the door cleaned

Roller rotated and surfaces wiped

New swab or cloth used to remove any diluted residue

Sensor window cleaned thoroughly until it is clear of streaks and residue

Sign off on the cleaning procedure

Warning: This maintenance check requires trained personnel with PPE!

Cover and dispenser door opened

Platen-bearing latch release tabs pulled and rotated up

Platen lifted out of the printer’s bottom frame

Gear and the two bearings slid off the shaft of the platen roller

Platen cleaned with alcohol moistened swab or lint-free cloth

Bearings and drive gear are on the shaft of the platen roller

Platen aligned with the gear to the left and lowered into the printer’s bottom frame