Doc. no. 4174205 / Revision 2.2 Page 2 of 142
4.3 Common Commands................................................................................................................................... 44
4.3.1 Output device parameters...................................................................................................................... 44
4.3.2 Output device errors................................................................................................................................. 44
4.3.3 Output tube temperature........................................................................................................................ 44
4.3.4 Verification of the transport mode.......................................................................................................... 44
4.3.5 Manual exposure switch release check ................................................................................................. 44
4.3.6 Laser Verification....................................................................................................................................... 44
5Overview of test objects and phantoms........................................................................... 45
5.1 Quality assurance (acceptance and consistency check) ...................................................................... 45
5.1.1 Panoramic ................................................................................................................................................. 45
5.1.2 CBCT........................................................................................................................................................... 46
5.2 Advanced calibration .................................................................................................................................. 48
5.2.1 Panoramic unit.......................................................................................................................................... 48
5.2.2 CBCT unit.................................................................................................................................................... 49
6Electronic design ................................................................................................................. 52
6.1 Circuit diagram –generation 1.................................................................................................................... 52
6.2 Circuit diagram –generation 2 (incl. Ceph) .............................................................................................. 54
6.3 A01 / MCU board .......................................................................................................................................... 57
6.4 A02 / Power board........................................................................................................................................ 57
6.5 A03 / Inverter board...................................................................................................................................... 58
6.6 A04 / C-shaped arm distributor board........................................................................................................ 58
6.7 A05 / Control unit .......................................................................................................................................... 58
6.8 A06 / Canine potentiometer board............................................................................................................ 58
6.9 Sensor (incl. board) ....................................................................................................................................... 59
6.10 X-ray tube (incl. board) ................................................................................................................................ 59
7Quality assurance................................................................................................................ 60
7.1 Panoramic...................................................................................................................................................... 60
7.2 CBCT ............................................................................................................................................................... 64
8Handling kV measurement and retracting the X-ray tube.............................................. 68
8.1 Retracting (shooting) the tube .................................................................................................................... 68
8.2 Testing the tube voltage (kV)....................................................................................................................... 69
9Checklists.............................................................................................................................. 70
9.1 Planning VistaVox mounting / reconstruction PC...................................................................................... 70
9.2 Setting up the reconstruction computer .................................................................................................... 72
9.3 3-year maintenance ..................................................................................................................................... 73
9.4 DGUV (BGV A3) measurement.................................................................................................................... 74
10 Troubleshooting................................................................................................................ 75
10.1 Unit cannot be switched on......................................................................................................................... 75
10.2 Cannot establish connection to the device .............................................................................................. 75
10.3 Computer displays a blue screen................................................................................................................ 76
10.4 VistaSoft delivers error message (at latest when starting acquisition) ..................................................... 76
10.5 Device makes clattering noise after Start Position is pressed on the touchscreen ................................ 77
10.6 Reconstruction aborts during measurement of CBCT dose at the image receiver............................... 78
10.7 Device goes into acquisition-ready state but no exposure takes place ................................................ 78
10.8 Acquisition aborts after short period of readiness...................................................................................... 78