Checking The Deadman Function - Dentsply Sirona Heliodent Plus Service Manual

4 Maintenance
4.4 Checking the deadman function
44
Test
WARNING
X-ray radiation!
➢ Release an exposure with the release button.
● The buzzer must be audible during radiation release.
● The radiation indicator lights up.
– The radiation LED lights up yellow.
– The display background lights up yellow.
➢ Check the measures exposure time and the high voltage measured
at the measuring instrument.
Tolerance: The permitted tolerance of the exposure time and high voltage
is ± 10%.
In case of error
● Radiation time outside of tolerance limits
– Replace board DX4.
● High voltage outside of tolerance limits
– Replace DX1.
4.4

Checking the deadman function

Test
1. Set the radiation time to 3.2 seconds (display: "3.20 s").
WARNING
X-ray radiation!
2. Release an exposure with the release button and let go of the release
button prior to the end of the radiation.
The radiation must stop.
The actual radiation time must be shown as a flashing display.
In case of an error
The unit does not stop releasing radiation.
➢ Replace board DX4.
Dentsply Sirona
Service Manual Heliodent Plus
62 15 102 D3507
D3507.076.01.15.02 03.2018