HIOS HSF-10 Instruction Manual page 16

4-9 Checking and adjusting the sensor voltage level
The sensor level in the device can be used with the majority of screws with its default settings.
However, differences in screw head height and shape, or if the rail has been
replaced, mean that the device may not operate correctly, therefore requiring
further adjustment.
Adjust the sensor level for when there are screws on the rail and for when there
are no screws on the rail.
The IC to be checked can be seen on the control board after remove the device
cover (Image 17).
The voltage level is set using pins 3, 5, and 7 of IC4050 on the control board.
Metal parts of the device are grounded during this process.
(A test clip can be used to make measuring the voltage easier. The
recommended product is the FP-7 test clip made by Sunhayato Corporation.
Adjusting the full rail sensor <using pin number 3>.
This sensor detects the number of screws on the rail.
Loosen the full sensor light receptor mounting screws (2 places) and move up
or down by rotating the bracket (Image 18).
If there are no screws to be used present, the voltage should be between 0.25
and 1.5V. If there are screws present, the voltage should be 3.5V or greater.
A voltage of 2.5V is used as the electronic threshold for determining the
presence of screws.
Device with the rear cover removed
Image 18
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Expanded view
7
5
3
Image 17
Full rail sensor
bracket mounting
screw