Routine Care and Adjustment

When the Power Roller is properly adjusted, the backing material should have even tension across its entire width and be wrapped snugly around all Guides and Rollers. If the tension is not even, the media/backing material may slide (walk) to the left or to the right as printing occurs. This can cause print registration problems on the labels.

Figure 26 illustrates an improperly adjusted Backing Rewind Power Roller. On the left side, the backing material is not contacting the Power Roller. The backing has more tension on the right edge than on the left edge.

Use a coin or screwdriver to turn the Power Roller Adjustment.

The Adjustment Mechanism changes the position of the right end of the Roller, while the left end is stationary. The right end moves up and down for tension balance.

Turning this Adjustment in a counterclockwise direction causes the right end of the Power Roller to move DOWN and increases the tension on the right side of the backing material. (Turning the Adjustment in a clockwise direction moves the right end of the Power Roller UP and decreases the tension on the right side.)

Balancing the tension increases the reliability of the printer to provide properly printed labels by preventing the label backing from walking.

Use the FEED Key Self Test (see Chapter 4) or your own label format to print several labels to insure tracking is maintained and tension on both edges of the backing material remains consistent. Remember to remove each label as it is automatically peeled away from the backing.

Battery Replacement

Your printer may be equipped with Battery Backed-Up Memory. The battery used with this feature is a 3 VDC lithium battery.

It is recommended that a qualified service technician replace this battery since internal access to the electronics area of the printer is required. Further information regarding the replacement of this battery is contained in Volume 1 of the Maintenance Manual (part # 44868L for Volume 1 only, order part # 44452L for both Volumes 1 and 2).

Warning: Danger of explosion if battery is incorrectly replaced. Replace only with the same or equivalent type recommended by the manufacturer. Discard used batteries according to the manufacturer’s instruction.

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Zebra Technologies S-300 manual Battery Replacement