Errors 50-57 (Connector Or Cable Errors; Errors 60-61 (Generator Processor And Aec Related Errors - Planmeca Proline EC pan Technical Manual

ERROR MESSAGE EXPLANATIONS

3.6 Errors 50-57 (connector or cable errors)

Er 50 Temperature sensor shorted
Er 51 Temperature sensor open (overpressure when applicable)
Er 52 mA or kV feedback cable open
Er 57 Exposure button activated

3.7 Errors 60-61 (generator processor and AEC related errors)

Er 60 Supply voltage ± 15 too low
Technical Manual
Before each exposure and after pressing READY or kV, mA adjustments the temperature of
the tubehead is measured. If the result is too low it is assumed that the sensor is short
circuiting.
Sensor broken. Measure the resistance that should be 1000 ohms at 25 °C. If not near,
replace.
If disconnecting the cable to cassette end limit sensor board cures this error, then this cable
and/or sensor board is partially shorting the + 15V.
Check in service mode the measured temperature. If still low with cables disconnected, faulty
generator processor board.
Before each exposure and after pressing READY or kV, mA adjustments the temperature of
the tubehead is measured. If the result is too high it is assumed that the sensor is open circuit.
In some models there is an overpressure sensor in the tubehead, connected in series with the
temperature sensor and breaking the circuit at overpressure. Also, if the tubehead and gener-
ator processor grounds are not properly connected to the protective earth this error will be
indicated.
Check the earthing cables.
If seems ok by resistance measurement (about 1000 ohms at 25°C) then the generator proc-
essor board is faulty.
Before each exposure and after pressing READY the kV and mA feedback signals are meas-
ured. If the result is too high it is assumed that the cables are not properly connected.
If seems ok by resistance measurement (kV about 16 kΩ, mA about 383R), measured at the
generator processor board inputs while cables connected, the board is faulty.
If the exposure circuit is activated when the unit is turned on or service mode is entered, Er 57
occurs. This is to prevent unintentional exposures.
Generator processor board analog circuits have operating voltages of ±15V.
If these are below about 12.5V this error is indicated.
If disconnecting the cable to cassette end limit sensor board cures this error, then this cable
and/or sensor board is shorting the + 15 V.
Otherwise faulty generator processor board.
Chapter C - HELP & ERROR MESSAGES
Planmeca Proline EC X-ray unit C-9