Intermec EasyCoder 501 E Installation & Operation Manual page 137

Appendix 3 CPU Board
Potentiometers,
cont.
136
Three potentiometers are situated along the top edge of the CPU
board and can only be accessed after the left-hand cover plate has
been removed. Normally, they do not require any adjustment.
• Label Stop Sensor potentiometer
This potentiometer is used in connection with the printer's Setup
Mode for adjusting the sensitivity of the label stop sensor, for
example according to the transparency of various brands of liner.
In most cases, it will be suffi cient to use the adjustment method
offered in the Setup Mode and by the Testfeed facility.
• Label Taken Sensor potentiometer
The label taken sensor (optional) is situated above the media
outfeed slot and detects if a label has not been removed from
the outfeed area. Thereby, the printer can be programmed not
to print any more copies before the last copy has been removed.
The operation of this sensor depends to a large extent on the
refl ectivity of the labels (for example glossiness, color, etc.). Thus,
it may sometimes require adjustment when switching between
different types of labels.
The light intensity of the emitter can be changed between two
values by means of fi tting or removing a strap on P-607 (strap
fi tted = increased intensity).
• Ribbon End Sensor potentiometer
The ribbon end sensor is situated at the rear part of the printing
mechanism. It emits a narrow beam of light and detects when
there is no more thermal transfer ribbon left to stop the light
from being refl ected back from the mirror plate. This sensor is
factory-adjusted and should normally not require any further
adjustment, except after possible replacement.
The light intensity of the emitter can be changed between two
values by means of fi tting or removing a strap on P-604 (strap
fi tted = increased intensity).
This sensor is omitted if the printer is not fi tted with any transfer
ribbon mechanism.
Before changing the setting of a potentiometer, always make sure that
the corresponding sensor is clean, free from obstructions (for example
pieces of labels or adhesive residue), and properly aligned.
Intermec EasyCoder 501 E – Installation & Operation Ed. 1