ERROR MESSAGES
28 Planmeca Intra X-ray unit
Technical Manual
E.34
X-ray tube anode voltage (kV) missing, or below the specified limit
This error occurs in the beginning of the exposure, when the tube anode voltage does not
rise. The tube head, tube head PCB, generator PCB or arm/extension cable signals HV1,
HV2 or KVC (see wiring diagram) can be faulty. See also error E.11 and E.30.
Check the incoming mains voltage during the exposure. Check the arm/extension cable
and the tube head feedback cable. Replace the generator PCB, tube head PCB or tube
head (replace in this order).
E.36
Too long exposure
The control panel CPU monitors the exposure time by measuring the state of the exp-
signal. If, however, the tube head CPU continues the exposure more than the maximum
exposure time, then the control panel CPU terminates the exposure and this error occurs.
This is a safety procedure, that guarantees that the exposure is terminated under all
conditions.
Replace the tube head PCB if this error occurs repeatedly.
E.37
kV feedback signal open circuit or short circuit
The kV feedback signal is monitored by the tube head CPU. The internal connection of the
tube head or tube head feedback cable is faulty.
Check the condition of the feedback cable, replace the tube head PCB or the tube head (in
this order).
E.38
mA feedback signal open circuit or short circuit
The mA feedback signal is monitored by the tube head CPU. The internal connection of
the tube head or tube head feedback cable is faulty.
Check the condition of the feedback cable, replace the tube head PCB or the tube head (in
this order).
E.50
Tube head temperature sensor short circuit
The tube head temperature sensor signal is measured by the tube head CPU. The sensor
is short-circuited, the tube head PCB or the tube head feedback cable is faulty.
Check the feedback cable. Replace the temperature sensor (beside the signal connectors
of the tube head), or the tube head PCB (in this order).
E.51
Tube head temperature sensor open circuit
The tube head temperature sensor signal is measured by the tube head CPU. The
temperature sensor is damaged, the tube head PCB or the tube head feedback cable is
faulty.
Check the feedback cable. Replace the tube head PCB.
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