Planmeca Proline EC ceph, Technical Manual

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Chapter H - PARTS REPLACEMENT & REPAIR
Planmeca Proline EC X-ray unit H-5
CHANGING THE TUBEHEAD
Technical Manual
3.3 Keyboard PCB
a) Unscrew four fixing screws in the bottom lid of the keyboard.
b) Lift the upper lid and remove the connector.
c) Replace with new lid including PCB and keyboard.
3.4 Layer hold limits
a) Open the cover of the lover shelf
b) Unscrew two fixing screws
c) Remove the connector
d) After installing new PCB check the limits and adjust if necessary
4 CHANGING THE TUBEHEAD
a) Remove the front cover of the tubehead by unscrewing the 4 fixing screws at the back side.
b) Remove the front cover of the tubehead.
c) Remove the back cover of the tubehead by unscrewing the 2 fixing screws that can be seen
after removing the front cover
d) Remove the secondary slot cover by unscrewing the 4 screws at the cassette head.
e) Tilt the tubehead end of the cover downwards and the other end will be released. Be careful
not to drop the cover on the collimator.
Remove the primary slot mechanism from the old tubehead.
f) Remove the damaged tubehead out from the X-ray unit. Then position the new tubehead to
the X-ray unit.
g) Reconnect all the cables, except fan cables (you don’t need to replace the covers yet).
h) Initialize the tubehead as described in section “Tube type programming” on page B-14.
i) Check and adjust the radiation field. This procedure is described in section “PANORAMIC X-
RAY BEAM ADJUSTMENT” on page D-4.
NOTE If the first slot is adjusted mechanically by loosening the screws and turning the tube-
head so that the beam is aligned in the middle, normally the other slots need no or only
a small adjustment.
Make the ball phantom test picture. Adjust if necessary (see section “PATIENT POSITION-
ING MECHANISM” on page D-11).
Install the covers.