Removing And Replacing Pcbs; Replacing Column Pcbs - Planmeca ProMax 3D Max with ProTouch Technical Manual

8 Parts replacement and repair

8.2 Removing and replacing PCBs

8.2.1 Replacing column PCBs

8.2.1.1 Replacing power PCB
Removing power PCB
206 Planmeca ProMax 3D Max
WARNING
The X-ray unit contains live mains voltage parts. Unplug the unit from mains
outlet before replacing the Power supply PCB.
1. Drive the column to a convenient height and switch off the X-ray unit.
2. Unplug the unit from mains outlet.
3. Press the locking bolt located behind the front panel and turn the bolt 90°
counter clockwise.
4. Remove all telescopic column front covers, see section "Removing
telescopic column front covers" on page 202.
5. The Frankfort plane positioning light assembly must be removed before
the Power supply PCB can be removed.
6. Unscrew the four attachment screws of Frankfort plane positioning light
assembly (1 in the figure below).
7. Disconnect the light cable from the CPU PCB terminal J7 (2 in the figure
below) and lift the assembly from its position.
8. Disconnect all the cables that are connected to the Power supply PCB.
NOTE
All the cable connectors are labelled.
9. Unscrew the Power PCB attachment screws with the 2.5 mm Allen key
and detach the Power supply PCB from the CPU PCB.
10. Remove the Power supply PCB.
Technical manual