Zebra 105SL Specifications download pdf (Page 125)

32056L Rev. 2 12/4/01 105SL Maintenance Manual Page 4-39

PREVENTIVE AND CORRECTIVE MAINTENANCE SECTION 4

1. Loosen the two screws that attach the platen support bracket to the side plate.

NOTE: Moving the bracket toward the front of the machine moves the label

backing material away from the rewind tracking plate. Moving the bracket

toward the rear of the machine moves the label backing toward the

tracking plate.

2. Adjust the bracket position as required and tighten the screws.

3. Run test labels and repeat the adjustment until the required results are achieved.

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There are three spindles that require periodic tension measurement and adjustment.

Measuring spindle tension should be done at least once each year unless required more

frequently due to greater printer use. Tension should be adjusted whenever it is not within the

tolerance range associated with that spindle. If proper tension can not be achieved using the

adjustment, it is likely that the felt washers have dried out or deteriorated and need to be

replaced.

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NOTE: A spindle adjustment kit (part # 01773) is available from Zebra.

The procedure for measuring spindle tension is similar for all three spindles. Refer to

Figure 4-29.

1. Use label or piece of tape to attach a 2″ (51 mm) wide strip of polyester film

(part # 01776) to the spindle shaft, or core where required. Wind the polyester film

around the spindle, or core, about 5 times in the direction indicated.

2. Measure tension by slowly and evenly pulling the film with a spring scale. Pull ONLY in

the direction shown. The pull rate should typically be 2″ (51 mm) per second.

3. Compare the spring scale reading with the force values provided in Figure 4-29.

Perform the spindle adjustment only if the reading is out of spec.

4. If adjustment is made, recheck the tension after running a full roll of labels.

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Ribbon Supply Spindle

NOTE: The ribbon supply spindle is adjusted by moving the end cap in and out

along the shaft. Two set screws secure the end cap into position.

Refer to the spindle tension adjustment diagram in Figure 4-29 and adjust the spindle tension

as follows:

1. Loosen the set screws in the end cap at the end of the spindle.

2. Move the end cap in toward the spindle to increase the tension. Move it out away from

the spindle to decrease the tension. Tighten the set screws.

3. Measure the spindle tension again. Compare the tension reading on the spring scale

with the appropriate force value provided in Figure 4-29. Repeat the adjustment

procedure until the correct tension is obtained.

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Zebra 105SL Specifications Page 125