Hologic DISCOVERY A - Page 7

Discovery QDR Series Technical Manual
Table of Contents vii
5.6.1 C-Arm Interface Board ........................................................................... 5-17
5.6.2 X-Ray Controller Assembly ................................................................... 5-18
5.6.3 Filter Drum Assembly ............................................................................ 5-18
5.6.4 Tank Assembly ....................................................................................... 5-19
5.6.5 Arm R FRUS (A and SL only) ............................................................... 5-21
5.6.6 Motor Controller Board ......................................................................... 5-23
5.6.7 Arm R Belt .............................................................................................. 5-23
5.6.8 Arm R Motor, Gearcase, Encoder or Encoder Belt ................................ 5-24
5.6.9 Gas Spring ............................................................................................... 5-25
5.7 Upper C-Arm FRUS ........................................................................................ 5-25
5.7.1 Detector Assembly A, SL, W, C Systems .............................................. 5-26
5.7.2 Detector Assembly C1 and Wi Systems ................................................. 5-27
5.7.3 Laser Assembly ....................................................................................... 5-29
5.7.4 Analog to Digital Converter Board (A Model only) ............................... 5-30
5.8 Aperture Assembly FRUS ............................................................................... 5-31
5.8.1 Aperture Stepper Motor .......................................................................... 5-31
5.8.2 Aperture Motor PCB ............................................................................... 5-32
5.8.3 Aperture Position Belt ............................................................................ 5-32
5.8.4 Rotary Potentiometer .............................................................................. 5-33
5.9 Drum Assembly FRUS .................................................................................... 5-34
5.9.1 Drum Encoder PCB ................................................................................ 5-34
5.9.2 Drum Belts .............................................................................................. 5-36
5.9.3 Stepper Motor Assembly ........................................................................ 5-37
5.9.4 Drum Bearings ........................................................................................ 5-37
5.10 Replacing EMI Cables ................................................................................... 5-40
5.11 FRU Lists ....................................................................................................... 5-41
Chapter 6 -
FAULT ISOLATION
6.1 Before Starting ................................................................................................... 6-1
6.2 Software Configuration ...................................................................................... 6-1
6.3 Hardware Configuration .................................................................................... 6-1
6.4 Power Problems ................................................................................................. 6-1
6.5 Motion Problems ................................................................................................ 6-2
6.6 Control Panel Problems ..................................................................................... 6-5
6.7 Display Problems ............................................................................................... 6-5
6.7.1 Vertical Stripe ........................................................................................... 6-5
6.7.2 Horizontal Stripe ....................................................................................... 6-6
6.7.3 Noise ......................................................................................................... 6-7
6.7.4 No Display ................................................................................................ 6-7
6.8 Targeting/Laser Problems .................................................................................. 6-8