LORAD AFFINITY Series User manual

Form ENG-0034-T03, Rev. 001
Osteoporosis Assessment
LORAD©Breast Cancer Detection
DirectRay©Digital Imaging
FLUOROSCAN©C-arm Imaging
TITLE DOCUMENT NUMBER REV
MANUAL, AFFINITY
SERVICE
AW-00227 005
ARTWORK SIZE A SHEET 1OF 1
REV AUTHORED BY DATE
A. TAMBASCIO 7/24/2003
REV DRAFTED BY DATE
BILL MOSES 8/5/2003
PROPRIETARY: This document contains
proprietary data of Hologic, Inc. No
disclosure, reproduction or use of any
part thereof may be made except by
written permission from Hologic.
REV. RELEASE DATE:
8/14/03
3
Artwork and Signature File for:
9-500-0255 MANUAL, AFFINITY SERVICE
Artwork consists of:
•Two hundred and twelve (212) 8 ½ inch x11 inch pages.

Service Manual
for Affinity Series Mammography Systems
Part Number 9-500-0255
Revision 005

P/N 9-500-0255 i
Service Manual
Table of Contents
List of Figures ..................................................................................................... -vii
List of Tables ....................................................................................................... -ix
Preface .............................................................................................................. P-xi
1.0 Using the Service Manual ..................................................................................................... P-xi
1.1 Warnings, Cautions and Notes ...................................................................................... P-xii
2.0 Acronym List ........................................................................................................................ P-xii
Chapter 1: General Information .........................................................................1-1
1.0 Introduction ........................................................................................................................... 1-1
1.1 Intended Uses .................................................................................................................. 1-1
1.2 Required Tools and Equipment ........................................................................................ 1-2
2.0 Safety ..................................................................................................................................... 1-2
2.1 Electrical Safety ............................................................................................................... 1-2
2.2 Interlocks ......................................................................................................................... 1-3
2.3 Mechanical Safety ........................................................................................................... 1-3
2.4 Radiation Safety ............................................................................................................... 1-4
3.0 Unit Description .................................................................................................................... 1-5
3.1 Gantry and C-Arm ...........................................................................................................1-5
3.2 Control Panel .................................................................................................................. 1-7
4.0 Compliance Data ................................................................................................................... 1-8
4.1 Compliance Statement ..................................................................................................... 1-8
4.1.1 Remote Indication of the Ready State ........................................................................ 1-8
4.2 Certifiable Components ................................................................................................... 1-9
4.3 Location of Labels .........................................................................................................1-10

ii P/N 9-500-0255
Service Manual
Chapter 2: System Installation ........................................................................... 2-1
1.0 Room Planning .......................................................................................................................2-1
2.0 Unpacking Instructions ...........................................................................................................2-2
2.1 Receiving Instructions ......................................................................................................2-2
2.2 Un-Crating the Unit .........................................................................................................2-2
3.0 Unit Installation ......................................................................................................................2-4
3.1 Input Power Configuration ...............................................................................................2-4
3.2 Power Cable Connection .................................................................................................2-5
3.3 Remote X-ray ON/Power ON Light Connection ...............................................................2-6
3.4 Control Panel Installation .................................................................................................2-6
3.4.1 Control Panel to Gantry Installation ..........................................................................2-6
3.4.2 Control Panel Remote Location Installation ...............................................................2-7
3.5 Securing Unit in Position ..................................................................................................2-8
3.6 Installing the Unit Accessories ..........................................................................................2-8
3.6.1 Exposure Footswitch .................................................................................................2-8
3.6.2 Dual Function Footswitch(es) ....................................................................................2-9
3.6.3 Connecting Film Labeling Devices ..........................................................................2-10
3.7 Initial Start Up Procedures ..............................................................................................2-10
3.7.1 Remote X-ray ON Light Configuration .....................................................................2-10
3.7.2 Initial Power Up ......................................................................................................2-11
3.7.3 Setting Operational Parameters ...............................................................................2-11
3.8 Final Operational Setup .................................................................................................2-11
3.8.1 Installing the Radiation Shield .................................................................................2-12
Chapter 3: Functional Checks/Setting Defaults ................................................. 3-1
1.0 Controls and Indicators ...........................................................................................................3-1
2.0 System Power Up ...................................................................................................................3-2
2.1 Pre-Power Up Checks ......................................................................................................3-2
2.2 Power Up Sequence .........................................................................................................3-2
2.3 Post Power-Up Checks .....................................................................................................3-3
3.0 The Affinity Series Control Panel ............................................................................................3-8
3.1 Control Panel Screens ......................................................................................................3-9
4.0 Setting User Defaults ............................................................................................................3-13
5.0 Setting Exposure Technique Defaults ....................................................................................3-13

P/N 9-500-0255 iii
Service Manual
Chapter 4: Calibrations and Performance Checks ..............................................4-1
1.0 Introduction ........................................................................................................................... 4-1
2.0 Calibration Procedures ........................................................................................................... 4-1
2.1 Entering Calibration Mode ............................................................................................... 4-2
3.0 Compression System Calibration Procedures .......................................................................... 4-7
3.1 Compression Force Calibration ........................................................................................ 4-7
3.2 Compression Thickness Calibration ................................................................................. 4-8
4.0 Exposure System Calibration .................................................................................................. 4-9
4.1 Tube Voltage Calibration ................................................................................................. 4-9
4.2 Check mA Calibration ................................................................................................... 4-11
4.3 Filament Current (mA) Calibration ................................................................................. 4-11
4.4 Backup Timer Test ......................................................................................................... 4-15
5.0 Automatic Exposure Control System Calibration .................................................................. 4-16
5.1 AEC Detector Gain Calibration ...................................................................................... 4-17
5.2 AEC Detect Board—R1 Adjustment ............................................................................... 4-18
5.3 Initial Calibration—Large Focal Spot (Mo) ..................................................................... 4-18
5.4 kV Tracking—Large Focal Spot (Mo) .............................................................................. 4-19
5.5 Initial Calibration—Large Focal Spot (Rh) ...................................................................... 4-20
5.6 kV Tracking—Large Focal Spot (Rh) ............................................................................... 4-21
5.7 Starting AEC Values—Large Focal Spot .......................................................................... 4-21
5.8 Performance Test—Large Focal Spot (Mo) ..................................................................... 4-21
5.9 Performance Test—Large Focal Spot (Rh) ...................................................................... 4-22
5.10 Initial Calibration—Small Focal Spot (Mo) ................................................................... 4-23
5.11 kV Tracking - Small Focal Spot (Mo) ............................................................................ 4-24
5.12 Initial Calibration—Small Focal Spot (Rh) .................................................................... 4-24
5.13 Starting AEC Values - Small Focal Spot ........................................................................ 4-25
5.14 Performance Test - Small Spot (Mo) ............................................................................. 4-25
5.15 Performance Test - Small Spot (Rh) .............................................................................. 4-26
5.16 HTC Factor (Offset) Calibration ................................................................................... 4-27
5.17 Large Bucky (24 x 30 cm) Factor Calibration ............................................................... 4-27
5.18 Compression Thickness Threshold Adjustment ............................................................ 4-28
5.19 C-arm Safety Function Check ...................................................................................... 4-31
6.0 Performance Checks ............................................................................................................ 4-32
6.1 Half-Value Layer ...........................................................................................................4-32
6.2 Reproducibility and Linearity in Manual Mode .............................................................. 4-35
6.3 Reproducibility in Auto-Time Mode .............................................................................. 4-36
6.4 Reproducibility in Auto-kV Mode .................................................................................. 4-36
6.5 Reproducibility in Auto-Filter Mode .............................................................................. 4-36
6.6 Bucky Device Performance Check ................................................................................. 4-40
6.7 AEC Limits Performance Check ..................................................................................... 4-40
6.8 System Level Functional Check ..................................................................................... 4-41
6.9 Optical Density (Users Preference) Verification ............................................................. 4-41
6.10 IRSD Leakage Check ................................................................................................... 4-41
6.11 X-ray Tubehead Leakage Check ................................................................................... 4-42

iv P/N 9-500-0255
Service Manual
7.0 X-ray and Light Field Check and Alignment Procedures ........................................................4-44
7.1 X-ray Beam Alignment Template ....................................................................................4-44
7.2 Exposing and Viewing the X-ray Field ............................................................................4-45
7.3 Aperture Adjustment Procedures ....................................................................................4-46
7.4 Auto Aperture Alignment ...............................................................................................4-47
7.4.1 Align the 24 x 30 cm Large Focal Spot ....................................................................4-47
7.4.2 Align the 18 x 24 cm Large Focal Spot ....................................................................4-48
7.5 Magnification Full Field (18 x 24 cm) Aperture Alignment (SM FS) .................................4-50
7.6 10 cm Coned-down Contact Aperture Alignment (LG FS) ...............................................4-50
7.7 7.5 cm Spot Contact Aperture Alignment (LG FS) ...........................................................4-51
7.8 7.5 cm Spot Magnification Aperture Alignment (SM FS) .................................................4-51
7.9 X-ray Field Alignment Verification .................................................................................4-51
7.10 Light Field Alignment Check and Adjustment ...............................................................4-51
7.11 Light Field Edge Contrast Check ...................................................................................4-53
7.12 Light Field Illuminance Check ......................................................................................4-55
8.0 Mechanical Adjustments ......................................................................................................4-56
8.1 Compression Chain Tension Adjustment ........................................................................4-56
8.2 Compression Display Potentiometer Adjustment ............................................................4-57
8.3 Compression Force Load Cell Setting .............................................................................4-57
8.4 C-arm Safety Microprocessor Board Calibration/Vertical Drive Force Load Cell Setting ..4-58
9.0 Maintenance Procedures ......................................................................................................4-59
9.1 kV Control Offset Calibration .........................................................................................4-59
Chapter 5: Maintenance—General .................................................................... 5-1
1.0 Introduction ............................................................................................................................5-1
2.0 Preventive Maintenance .........................................................................................................5-1
3.0 Troubleshooting .....................................................................................................................5-2
3.1 Theory of Operation Overview ........................................................................................5-2
3.1.1 Operator Control Panel .............................................................................................5-2
3.1.2 Power Distribution ....................................................................................................5-3
3.1.3 System Control ..........................................................................................................5-3
3.1.4 Tubehead Functions ..................................................................................................5-4
3.1.5 X-ray Tube Control ....................................................................................................5-4
3.1.6 Mechanical Functions ...............................................................................................5-5
3.1.7 Exposure Control .......................................................................................................5-6
3.1.8 Automatic Exposure Control ......................................................................................5-7
3.2 Alert Codes Log ................................................................................................................5-8
3.3 System Data Retrieval ....................................................................................................5-10
3.3.1 Downloading Alert Codes Log ................................................................................5-11
3.3.2 Downloading Calibration Data ...............................................................................5-11
3.3.3 Uploading Calibration Data ....................................................................................5-12