Service manual
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2.5.3. Error elimination
In case the photocell already had been adjusted so that the difference between A and B has received
the highest possible value (as described in chapter "2.1.3. Photocells"), the "sensitivity of the label
photocell" can be adjusted.
2.5.4. Monitor
After activating the key again in menu "Parameter of label photocell", the photocell monitor will be
activated.
On the display of the printer the following appears:
The digit represents the measured voltage;
the black bar represents the measured voltage as graph;
the last character shows the position of the photocell:
+
above label
-
above backing paper
0
at the edge label - backing-paper
The monitor serves to check the label photocell to its function. As well it is possible to move the label
manually under the photocell to obtain an idea of the voltage wave form and to be able to judge, if the
label can be measured.
The difference of backing-paper and label should be higher than 1,5 V
(see chapter "2.1.3. Photocells")
After activating the key again "Reflection photocell 2" appears for checking the reflection photocell
(see chapter "2.1.3. Photocells");
then:
"Dispenser photocell 3" (see chapter "2.1.3. Photocells")
"Print head temp. XX degrees" (print head temperature)
"Ribbon photocell" (Hi or Lo) (see chapter "2.1.3. Photocells")