© Ernst Nagel GmbH 2S Trimmer Service Manual en.doc Rev.1.0. 20.07.2011
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Contents
6. Default / basic adjustments
(continued)
6.3 Sensors and Switches
(continued)
6.3.2 Adjusting Photo Sensors
The Photo sensors that are used in de STR have a small
yellow adjustment screw on the back. With the aid of a very
small screwdriver it is possible to adjust the photo sensors.
(Fig. 6.27)
All photo sensors should be mounted looking straight down
on the paper path (90º on the transport belts),
HK12PB8
for
[FC1], [FC2] and [FC3]. Or straight against the Reflection
sticker,
LK89PD8
for [FC4] and [FC7].
Use an unprinted paper (sheet) to adjust the Photo sensors.
After that adjust the Photo sensor one stripe further than it
was adjusted. Other paper colors can absorb the light which
the Photo sensor can not see.
Photo sensors should only see the booklet between the transport
belts or the paper trim waste between the Reflection sticker and
the sensor.
A photo sensor that is set too sensitive may see something
that is not really there. If a photo sensor is not sensitive enough
it might not see the booklet.
When the photo sensor light is on, there is something seen
in his range. When the photo sensor light is off, the range is clear.
Fig. 6.27
more sensitive
less sensitive