Planmeca Proline EC ceph, Technical Manual

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Chapter G - TROUBLESHOOTING
Planmeca Proline EC X-ray unit G-7
TROUBLES IN ADJUSTMENT OF FOCAL TROUGH MOVEMENT
Technical Manual
6 TROUBLES IN ADJUSTMENT OF FOCAL TROUGH
MOVEMENT
6.1 Forwards/backwards movement does not function
6.2 Movement area abnormal
6.3 Erroneous position indication
The position indication is correct if the display shows 00 when the light meets the bite piece.
Erroneous position indication may depend on the fact that the display has not been adjusted
to zero after installing the reference Hall sensor or keyboard processor PCB or that the accu-
mulator is empty.
SYMPTOM POSSIBLE REASON CORRECTIVE ACTION
Motor is not running Keyboard out of order.
PCB out of order or connector
loose.
Motor out of order or connector
loose.
Motor stalls Drawing screw or nut dam-
aged.
Obstruction in the mechanism.
Motor is running but mecha-
nism is immobile. Cogged belt broken or loose.
Cogged belt wheel glides from
the axle attachment.
Thread of drawing nut dam-
aged.
SYMPTOM POSSIBLE REASON CORRECTIVE ACTION
Movement area abnormal Position information has disap-
peared.
Reference hall sensor defec-
tive.
Reference magnet incorrectly
installed.