Planmeca intra, Technical Manual

Page: 44 / 58

PARTS REPLACEMENT & REPAIR
40 Planmeca Intra X-ray unit Technical Manual
8.3 Replacing the tube head
1. Remove the tube head PCB as described in section 8.2 “Replacing the tube head PCB” on
page 39.
2. Unscrew the six fastening screws of the tube head cover (figure 17, 1) and remove the
cover (figure 17, 2).
3. Unscrew the five screws from the support frame (figure 17, 3) and remove the tube head
(figure 17, 4). Note, that there is a grounding plate under the lower left attachment screw.
4. Install the new tube head in reverse order. Make sure that the grounding plate touches the
tube head PCB.
NOTE Do not overtighten the tube head cover fastening screws to avoid damaging the
cover.
5. Perform the x-ray tube filament preheating voltage calibration, see section 2.3 “X-ray tube
filament preheating voltage calibration” on page 13.
Figure 17
3
4
1
2
Grounding plate