Sirona ORTHOPHOS XG 3 DS, Service Manual

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59 38 399 D3352
1 – 12
D3352.076.01.13.02 07.2008
1.5 Operation notes Tab 1
Help messages in case exposure
readiness cannot be attained Help messages are displayed on the single-line display of the Multipad
(XG 5 / 3 / 3 PPE) or on the touchscreen of the Easypad (XG
Plus
).
If you have to remove covers from the
unit Proceed according to section "1.14 Removing the covers".
When removing covers, always remember that direct sunlight or bright room
lighting can cause system malfunctions due to activated light barriers.
Therefore: avoid direct sunlight and bright room lighting above the unit!
When attaching the covers: be sure to screw the sheet metal cover back on.
CAUTION
For reasons of electromagnetic compatibility, be sure to fasten all screws.
Reattach the covers.
Secondary diaphragm Do not manually move or otherwise exert force on the secondary diaphragm
(e.g. when removing it from its packaging).
Measurements Always switch the unit OFF before connecting a measuring instrument.
Select the correct current/voltage type and adjust the measuring range to
match the expected readings.
Perform continuity tests only on units which are switched off.
If several exposures with radiation must be taken to check a measurement,
make sure that the prescribed cool-down intervals are observed. They are
maintained by an automatic exposure blocking function (see operating
instructions).
The pulse/pause ratio is 1: 10, i.e. a 10-second pause is maintained for each
second of radiation emission. The pulse/pause ratio is automatically main-
tained (automatic exposure blocking).
A pulse/pause ratio of 1:20 is better for the X-ray tube.
WARNING
It is essential that you observe the radiation protection regulations ap-
plicable in your country prior to radiation release.
The test rotations triggered by pressing the T key on the Easypad and then
the release button are executed without radiation.
When replacing parts Switch the unit OFF before replacing parts.
The unit must be disconnected from the junction box of the building installa-
tion before replacing any parts near the power supply, power switch, board
DX 32 or the X-ray tube assembly!
Please always wear an ESD wrist band to protect sensitive components on
printed circuit boards (ESD).
Always check the system and adjust it as required after replacing a board or
the X-ray tube assembly.
The article numbers for ordering spare parts can be found in the spare parts
list, Order No. 59 38 423. The diagrams contained in the spare parts list pro-
vide a useful guide when replacing parts.