SERVICE MANUAL
Checkout and adjustment
RTG PLUS (120V) (Rev. 0)
7-44
7.9
7.97.9
7.9
Checking (safety) hardware timers
Checking (safety) hardware timersChecking (safety) hardware timers
Checking (safety) hardware timers
WARNING:
The following test implies X-ray emission; please follow all measures
envisaged by local safety regulations.
1. Enter the SET-UP program (see paragraph 7.2). Then press "s" (39),
then button "T" (31) several times until reaching S4 mode; set S4 to
ON by pressing "s" (39).
2. Press button "R" (32)to exit the S4 function and read on the display
the time set in Panoramic.
To see the time set in Cephalometry operate on push button
decreasing (40).
If the hardware safety timers need to be checked by external means,
proceed as follows:
3. By means of the "decrease" (40) or "increase" (41) push button,
increase to a value higher than the Hardware timer preset value of
the mode to be checked. Remember that the safety Hardware time
set for Panoramic is 20 sec. while that for Cephalometry is of 5 sec.
4. Perform an exposure, measuring the time of activation relay K21
pilot light.
Should this time be different of more than 2 sec. than the one
recorded at point "2" adjust on trimmer R87 for the Panoramic time
and trimmer R86 for the Cephalometry time.
When the adjustment is over, proceed as follows:
5. Turn the system OFF. Turn it ON again. Enter in SET-UP and set S4
to OFF.
To return to the normal working conditions, press button "R" (32).
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