Service manual

09/09 Rev. 5.02-02 SERVICE MANUAL Service Electronics
AP 4.4 – AP 5.4 – AP 7.t
32
Setting the material end sensor
These printer types are equipped with a single light sensor which is designed
to detect both, punches and material end. The sensor must be able to detect
three different states:
• No material
• Only backing paper
• Backing paper + label face
The parameter
SERVICE FUNCTION > Matend adjust can set the limit between being
recognized as „only backing paper“ or as „material end“ [4].
¯ Before you even think about changing the setting of this parameter, make
sure that the sensor is correctly adjusted!
P How to? - Read about in paragraph Setting sensors (AP4.4/AP 5.4) on
page 25 respectively in paragraph Setting sensors (AP7.t)
on page 28.
Proceed as follows to set the materialend sensor:
1. Call parameter
SERVICE FUNCTION > Matend adjust:
2. Take the label material out of the sensor fork.
3. Set the value xx to 20 by pressing the Cut/Feed buttons.
All measured values below the set limit (that is <20), are recognized by the
electronics as material end, values lying above are recognized as „only
backing paper“.
¯ To be able to process transparent label stock, the parameter has to be set
to zero.
[4] The measurement ranges of the combined punch/material end sensor of the AP 4.4/
AP 5.4/AP7.t - schematically illustrated.
Matend adjust
yyy Level : xx
255
0
20
Evaluation range
for recognitionpunch
Evaluation range
for material end
Light barrier measurement range
Measurement range
backing paper +
label stock
Measurement range
only backing paper
Measurement range
without material
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