Maintenance Instructions
Sirona Dental Systems GmbH
8
62 15 144 D 3507.101.01.03.02
Verification of the Exposure Button
•
If door contacts are installed, close door (close contacts), do not bridge contacts.
•
Turn unit OFF (WARNING: Electrical shock hazard!)
•
Connect multimeter in range for measuring resistance to:
DX1 X401.1
and
4
, when door contacts
are not
used.
DX1 X401.1
and
2
, when door contacts
is
used
•
Measure resistance:
Exposure button not depressed:
R > 10 kOhm
Exposure button depressed:
R < 100 Ohm
The values must remain constant, even if the coiled cable is moved during the measurement.
– If the values are not present, check correct function of the door contacts.
•
If the values are still not present, exchange exposure button.
•
Disconnect multimeter.
•
Reattach housing (see Service Manual, chapter ”
Removing Housing
”)
