Planmeca ProX - Page 41

8 ERROR MESSAGES
Technical manual Planmeca ProX 39
E.37kV 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.38mA 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.50Tube 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.51Tube 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.
E.52Filament voltage feedback not in specified limits
The filament voltage is monitored by the tube head CPU. The amplifier is faulty.
Replace the tube head PCB.
E.57Exposure key pressed/failure during self test
The tube head CPU checks the state of the exp-signal when the unit is switched on. The
exposure key or the separate exposure switch can be short-circuited. The arm, extension,
control panel, sync or telephone cable can be faulty. The tube head PCB or the generator
PCB can be faulty.
Check the cables and the separate exposure switch. Replace the control panel, tube head
PCB or the generator PCB (in this order).