As soon as the tube current allows a voltage drop on resistor R3 which is greater
than U (V4) = 2.4v + U (V5) = 0.7v + U (V6) = 0.7v, which of the following occurs?
a. Transistor V6 is controlled through R3.
b. Transistor V7 is controlled through R8.
The V7 collector current stops the AR relay from drawing.
d. The V6 collector current causes the AR relay to draw.
You are troubleshooting an alert malfunction. The radiation visible and audible
indicators do not stop when you are testing the deadman feature. Which of the
following is the probable malfunction?
a. The timer is functioning improperly or is maladjusted.
b. The X-ray head is defective and must be replaced.
The scissors arm is defective and must be replaced.
d. The pcb D1 is maladjusted or malfunctioning.
You are troubleshooting a mechanical malfunction. You have released the
scissors arm and the X-ray head did not return to a 45 angle by itself. Which of
the following is the probable malfunction?
a. The rotational parts are malfunctioning.
b. The friction pad requires adjustment.
The brake requires adjustment.
d. The tube head needs replacement.