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Del Medical EPEX Omniflex IV Service Manual

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EPEX Omniflex IV System
Service Manual
P/N 8000-EPEXOMNISM
Revision: A, August 8, 2005

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Summary of Contents for Del Medical EPEX Omniflex IV

  • Page 1 Direct Ray EPEX Omniflex IV System Service Manual P/N 8000-EPEXOMNISM Revision: A, August 8, 2005...
  • Page 2 Del’s customers solely for the purpose of facilitating the use of Del’s products. No information contained herein may be disclosed to any unauthorized person for any purpose whatsoever without the prior written consent of Del Medical Imaging Corporation. The information in this document is subject to change without notice.

  • Page 3: Table Of Contents

    EPEX/Omniflex IV System Service Manual Contents About This Manual Intended Use ..................... xi Audience ....................xii Organization.................... xiii Conventions Used in This Manual............xiv Chapter 1: Safety Information General....................1-2 Electrical ....................1-2 Mechanical....................1-3 Safety Warnings and Cautions ..............1-3 General Use Warnings ..............
  • Page 4 EPEX/Omniflex IV System Service Manual Authorized EU Representatives............. 1-11 Identification Labels ................1-12 Overhead Tube Crane Labels............1-12 Generator Labels................1-13 DirectRay Console Labels .............. 1-13 Radiographic Table Labels ............. 1-14 Radiation Safety..................1-15 Safety ....................1-15 Manufacturer’s Responsibility............1-16 Monitoring Personnel ..............
  • Page 5 EPEX/Omniflex IV System Service Manual Room Preparation ................3-4 EPEX/Omniflex IV System Installation Checklist ......... 3-6 Unpacking the Equipment ..............3-7 Positioning the Equipment..............3-9 Positioning the Generator ..............3-9 Positioning the DirectRay Console..........3-11 EPEX/Omniflex IV System Wiring Diagrams ........3-11 Installing the DirectRay Console ............
  • Page 6 EPEX/Omniflex IV System Service Manual Final Assembly ................3-35 Chapter 4: Adjustments and Calibration Connecting the Service Laptop............... 4-2 Installing the GenWare Console Program......... 4-2 Starting GenWare Console..............4-2 Setting the Communications Link ............ 4-2 Setting the Generator Utilities ..............4-3 Utility Menu..................
  • Page 7 EPEX/Omniflex IV System Service Manual Checking the Size of the X-ray Field to Collimator Indicated Size Full Field................4-34 Checking the Size of the X-ray Field to Collimator Indicated Size 4-34 Checking the Size of the X-ray Field to Collimator Indicated Size Full Field at 180 cm .............
  • Page 8 EPEX/Omniflex IV System Service Manual Chapter 7: Diagnostics and Troubleshooting Troubleshooting Overview ..............7-2 Troubleshooting Service Tools ............... 7-3 Netscape.................... 7-3 UNIX Toolbar ................... 7-3 Calculator..................7-4 SCSI Error Handling................. 7-4 Error and Warning Reporting............7-5 Accessing Tail Log Files................. 7-7 Accessing Log Files in a Terminal Session ........
  • Page 9 EPEX/Omniflex IV System Service Manual Appendix B: Recommended Tools Hand Tools ....................B-2 Metric Tools .................... B-6 Electrical Tools ..................B-6 Test Equipment ..................B-7 Appendix C: Forms System Installation.................. C-3 System Calibration Forms ..............C-9 Preventive Maintenance Forms ............C-23 Appendix D: Field Replaceable Units Ordering Parts ..................

  • Page 11: About This Manual

    About This Manual This manual contains service information for the Del EPEX/Omniflex IV System. It includes an overall description of how the system operates and provides detailed service support procedures such as repair and replace, troubleshooting, validation, and calibration. This manual is intended to service the EPEX/Omniflex IV System consisting of the following components: •...

  • Page 12: Audience

    EPEX/Omniflex IV System Service Manual Audience This manual is intended for service engineers who have fulfilled the following training prerequisites or have equivalent experience: • EPEX/Omniflex IV System • Radiation safety • Electronics, including troubleshooting skills • X-ray theory • X-ray Generator systems •...

  • Page 13: Organization

    EPEX/Omniflex IV System Service Manual Organization Chapter 1: Safety Information Provides a description of the safety requirements for installing, maintaining, and servicing X-ray equipment. Chapter 2: General Information Provides a description of the EPEX/Omniflex IV System components. Chapter 3: Installing the System Hardware Provides steps for the installation process.

  • Page 14: Conventions Used In This Manual

    EPEX/Omniflex IV System Service Manual Conventions Used in This Manual This manual uses three types of special messages to emphasize information or point out potential risks to personnel or equipment. A sample of each message type follows. Note: Notes provide additional information, such as expanded explanations, hints, or reminders.
  • Page 15 Chapter 1 Safety Information Personnel operating and maintaining the equipment should receive EPEX/Omniflex IV System technical training, and be thoroughly familiar with all aspects of its operation and maintenance. To ensure their safety, all users should read this chapter carefully before using the system. Additionally, to promote safety awareness, Service Engineers should periodically review the basic precautions outlined in this chapter.

  • Page 16: General

    EPEX Omniflex IV System Service Manual General The following are general safety precautions: • Only personnel who have completed a Del training course for EPEX/ Omniflex IV System maintenance are qualified to remove the covers and repair or maintain the equipment.

  • Page 17: Mechanical

    EPEX Omniflex IV System Service Manual Mechanical The following are mechanical safety precautions: • Keep fingers, hands, and tools clear of moving parts. • Unless specifically instructed otherwise, do not operate the equipment with covers or access panels removed. •...

  • Page 18: Electrical And Flammable Warnings

    EPEX Omniflex IV System Service Manual Electrical and Flammable Warnings The DirectRay Console component of the EPEX/Omniflex IV System may not be located in the patient environment. WARNING The EPEX/Omniflex IV System and associated cables must not be operated in the presence of moisture.

  • Page 19: Moving And Using Equipment Warnings

    EPEX Omniflex IV System Service Manual Moving and Using Equipment Warnings Use at least two qualified people when moving equipment in order to prevent injury or strain. WARNING The equipment is fragile and must be handled with care. WARNING Excessive use of the keyboard and mouse or trackball may result in repetitive strain injury.

  • Page 20: Safety Symbols

    EPEX Omniflex IV System Service Manual Safety Symbols The following safety-related symbols are found on the equipment. To avoid injury, learn to recognize them. Radiation Power Off (used with the DirectRay Console UPS) Power On (used with the DirectRay Console UPS)
  • Page 21 EPEX Omniflex IV System Service Manual DirectRay Detector Orientation Identifier (on the Bucky) Protective Earth Ground Hazardous Voltage Power On Indicator Hard Drive Standby Switch (used with CPU) On Line Indicator (used with X-ray Generator switch at DirectRay Console) Off Line Indicator (used with X-ray Generator switch at DirectRay...

  • Page 22: Safety And Compliance

    EPEX Omniflex IV System Service Manual Special Cleaning Instructions Lifting Warning MC20_134.cdr One or more of the following regulatory symbols are found on the equipment. UL Classified Device UL Listed Device UL Recognized Device CSA Listed Device ETL Listed Device Safety and Compliance Exposure to ionizing radiation such as X-rays can be hazardous.

  • Page 23: Radiation Protection

    EPEX Omniflex IV System Service Manual • Medical X-Ray Protection up to Three Million Volts (Handbook No. 76, National Bureau of Standards/National Institute for Standards and Technology) In addition to ionizing radiation, other safety concerns are addressed by various U.S., Canadian, and international standards. The component parts...
  • Page 24 EPEX Omniflex IV System Service Manual Any materials placed in the path of the beam absorb natural as well as manmade radiation, such as the X-rays used in the EPEX/Omniflex IV System. Materials with a high atomic number, such as tungsten, lead, and uranium, absorb X-rays much more effectively than materials with a low atomic number such as hydrogen, aluminum, or beryllium.

  • Page 25: Authorized Eu Representatives

    EPEX Omniflex IV System Service Manual Authorized EU Representatives The manufactures or parts and subsystems in the EPEX-Omniflex Overhead Tube Crane are represented in the European Union by the following: Villa Sistemi Medicali Via delle Azalee 3 20090 Buccinasco (MI)

  • Page 26: Identification Labels

    EPEX Omniflex IV System Service Manual Identification Labels The EPEX/Omniflex IV components have manufacturing and certification information affixed. The manufacturing label contains: • The full name and address of the manufacturer of the component • The place, month, and year of manufacture •...

  • Page 27: Generator Labels

    EPEX Omniflex IV System Service Manual Generator Labels The location of the Generator identification labels are shown in Figure 1-1. Figure 1-1. Location of the Generator Identification SYSTEM CONTAINS FIRMWARE Labels OIL TANK PART NO.: PART NO.: SERIAL NO.: REVISION: MFG.

  • Page 28: Radiographic Table Labels

    EPEX Omniflex IV System Service Manual Radiographic Table Labels The location of the Radiographic Table identification labels are shown in Figure 1-3. Figure 1-3. Location of the Radiographic Table Identification Labels Product Description: Hologic, Inc Model Designation: 35 Crosby Drive...

  • Page 29: Radiation Safety

    EPEX Omniflex IV System Service Manual Radiation Safety Safety Everyone associated with X-ray work must be familiar with the recommendations of the Center for Devices and Radiological Health (CDRH), the National Institute for Standards and Technology (NIST), the National Council on Radiation Protection (NCRP), and the International Committee on Radiation Protection (ICRP).

  • Page 30: Manufacturer's Responsibility

    EPEX Omniflex IV System Service Manual Manufacturer’s Responsibility Although this equipment incorporates protection against X-radiation other than the useful beam, practical design does not provide complete protection. Equipment design does not compel the operator or assistants to take the necessary precautions; nor does it prevent the possibility of...

  • Page 31: Radiation Protection Survey

    EPEX Omniflex IV System Service Manual A frequently used, but less accurate, method of determining the amount of exposure is placement of film at strategic locations. After a specified period of time, develop the film to determine the amount of radiation.
  • Page 32 EPEX Omniflex IV System Service Manual Some components of the EPEX/Omniflex IV System have been classified as to acceptable applications of use in accordance with Information Technology Equipment regulations. Observe all safety precautions recommended by the accessory equipment manufacturer in the user documentation provided with the equipment. With a laser bar code reader, observe any laser precautions.
  • Page 33 Chapter 2 General Information This chapter provides general information about the EPEX/Omniflex IV System. Contents Subject Page What Is the EPEX/Omniflex IV System?..........2-2 Major System Components..............2-4 Compatibility Certified Components............ 2-13 Compatible Output Devices..............2-14...

  • Page 34: Chapter 2: General Information

    EPEX Omniflex IV System Service Manual What Is the EPEX/Omniflex IV System? The EPEX/Omniflex IV System is a direct-to-digital, fully integrated, imaging system for general purpose outpatient radiology. The EPEX/Omniflex IV System utilizes a single digital detector to perform most general radiography procedures.
  • Page 35 EPEX Omniflex IV System Service Manual The EPEX/Omniflex IV System consists of the following components: • X-ray Generator • Overhead Tube Crane (OTC) • Collimator • X-ray Tube • Radiographic Table • Automatic Exposure Control • DirectRay Detector • DirectRay Console •...

  • Page 36: Major System Components

    EPEX Omniflex IV System Service Manual Major System Components Overhead Tube Crane (OTC) Components The OTC, the EPEX/Omniflex IV subsystem that hangs from the ceiling, includes the following components: • LONG rails—there are two LONG (longitudinal) rails. These rails are fixed to the ceiling structure (usually I-beams and Unistrut rails).
  • Page 37 EPEX Omniflex IV System Service Manual Overhead Tube Crane Components Figure 2-1. General Information...

  • Page 38: Radiographic Table Components

    EPEX Omniflex IV System Service Manual Radiographic Table Components The table components are: • Patient Support Device—supports up to 450 lb and moves vertically, left and right, and fore and aft. • Table Movement Controls—a three-switch foot pad that moves around...

  • Page 39: Directray Console Components

    EPEX Omniflex IV System Service Manual Figure 2-2. Table Components Tower (encloses Bucky counter weight) Patient Support Device Operator Control Switches Bucky Electro/ pivot point mechanical components I/O interface Horizontal track Tower pivot point Table Movement Controls Bucky PB20_116.CDR Link Joint...
  • Page 40 EPEX Omniflex IV System Service Manual For the locations of the DirectRay Console components, refer to Figure 2-3. Figure 2-3. DirectRay Console Components Image Preview Monitor Bar Code Reader Pointing X-ray Generator Device Power Switches Network Connection Keyboard DirectRay Console...

  • Page 41: Generator Components

    EPEX Omniflex IV System Service Manual Generator Components The Generator provides the power and interfacing to operate X-ray tubes, the Bucky, and digital imaging systems. Refer to Figure 2-4 on page 2-10. The Generator components and functions are: • High frequency Generator •...
  • Page 42 EPEX Omniflex IV System Service Manual • mA range: radiography 25 to 320 mA (30 kW), 630 mA (50 kW), 800 mA (65 kW), and 1000 mA (80 kW). • mAs range: tube dependent, max 1000 mAs. • time range: radiography 2.0 to 6300 ms.

  • Page 43: Input Power

    EPEX Omniflex IV System Service Manual Input Power Power to the Bucky and Collimator is supplied by the line-adjusting transformer in the lower Generator cabinet. Figure 2-5. Input Power … … … System Earth Grounding Map The ground impedance from the central grounding point to any subsystem peripheral must not exceed 0.1 Ohms.

  • Page 44: Collimator

    EPEX Omniflex IV System Service Manual Collimator The Collimator is attached to the OTC. Refer to Figure 2-7. The Collimator control panel is shown in Figure 2-8. For further information on the Collimator, refer to the Collimator and OTC service manuals that came with the system.

  • Page 45: Compatibility Certified Components

    EPEX Omniflex IV System Service Manual Compatibility Certified Components This topic lists the components compatible with the EPEX/Omniflex IV System. Component Model Number DirectRay Console DROC R/E 120 & 230 (Certified Component) Generator various DirectRay Detector DR0033 DirectRay Controller DR0014...

  • Page 46: Compatible Output Devices

    EPEX Omniflex IV System Service Manual Compatible Output Devices If the image is acceptable, the data is stored or printed. For an illustration of sending the images via DICOM format to the printer, refer to the illustration below. The EPEX/Omniflex IV System supports output to DICOM Print Service Class and DICOM Storage Service Class providers.
  • Page 47 EPEX Omniflex IV System Service Manual PACs Devices Table 2-1. Software/ DICOM Platform Conformance Manufacturer Model Type Service Basis Version Comments Agfa Impax 3.5 PACs Store Complete Cannon Wrkst Store Rational Ver. 3.2 Jan 1998 Complete Imaging GE Medical PACs...
  • Page 48 EPEX Omniflex IV System Service Manual Printers Table 2-2. DICOM Conformance Manufacturer Model Type Service Interface Version Comments Agfa 5200 Printer Print MG 3000 PMS Ver. 3.31 Extension Jul 1999 of Drystar Validation Agfa Drystar Printer Print MG 3000 PMS Ver. 3.31...

  • Page 49: Installing The System Hardware

    Chapter 3 Installing the System Hardware This chapter describes the basic installation of the EPEX/Omniflex IV System. Contents Subject Page Overview....................3-2 EPEX/Omniflex IV System Installation Checklist ......... 3-6 Unpacking the Equipment ..............3-7 Positioning the Equipment............... 3-9 EPEX/Omniflex IV System Wiring Diagrams ........3-11 Installing the DirectRay Console ............

  • Page 50: Overview

    EPEX/Omniflex IV System Service Manual Overview This topic details the tasks you must do before installing the EPEX/Omniflex IV System. The topics covered are: • Safety equipment needed • Personnel required • Tools and equipment needed • Room preparation • Checking the ceiling Staging the System Before shipping the system to the site, Del stages the entire system at the...

  • Page 51: Personnel Required

    EPEX/Omniflex IV System Service Manual Personnel Required Do not attempt to install this equipment with less than two people—three people is preferable. Each person should wear the proper safety equipment during the installation. Tools and Other Equipment Before starting the installation, ensure that you have the proper equipment to do the job.

  • Page 52: Parts To Be Returned To Del

    EPEX/Omniflex IV System Service Manual Parts To Be Returned to Del The following parts must be returned to Del: • Caster Bars from the Radiographic Table • Drilling Plate • Leveling Plate Room Preparation The following warnings must be complied with before installation begins. Failure to comply with these warnings may cause serious or fatal bodily injury and degrade the unit’s safety level.
  • Page 53 EPEX/Omniflex IV System Service Manual Typical Site Planning Drawing Figure 3-1. Installing the System Hardware...

  • Page 54: Epex/Omniflex Iv System Installation Checklist

    EPEX/Omniflex IV System Service Manual EPEX/Omniflex IV System Installation Checklist As the installation progresses, use the checklist as a guide. The EPEX/Omniflex IV System Checklist provides a reminder of the critical steps for installation. EPEX Omniflex System Installation Checklist Delivery Completed Installing the Table Equipment Unpacked Place the table...

  • Page 55: Unpacking The Equipment

    EPEX/Omniflex IV System Service Manual Unpacking the Equipment The equipment was carefully inspected and tested prior to shipment. Upon its arrival, inspect each container for damage. Unpack each component as soon as possible and conduct a thorough examination of the components. Do this in the presence of the carrier if at all possible.
  • Page 56 EPEX/Omniflex IV System Service Manual Figure 3-2. Typical EPEX/ Omniflex IV Room Layout Installing the System Hardware...

  • Page 57: Positioning The Equipment

    EPEX/Omniflex IV System Service Manual Positioning the Equipment After the equipment has been moved to the room and unpacked, position the major components as shown on the site planning drawings. Ensure that there is enough room between the components and the walls or other equipment to complete the installation of components and cabling before final placement.
  • Page 58 EPEX/Omniflex IV System Service Manual To position the Generator: Step Action Remove the Generator from the shipping packaging by cutting the bands that secure the cardboard sleeve to the shipping pallet. Lift the shipping sleeve off the shipping pallet and put aside. The generator should be the only thing attached to the shipping pallet.

  • Page 59: Positioning The Directray Console

    EPEX/Omniflex IV System Service Manual Step Action Loosen the shipping seismic plates (by the leveling feet), flip them inside, and tighten them. Move the Generator to a location close to the final position, leaving room to enable the cabling and assembly required. Remove the front and side covers of the generator, including the bottom panels.

  • Page 60: Installing The Rails

    EPEX/Omniflex IV System Service Manual Installing the Rails The first step for installing the OTC is to install the OTC rails and OTC bridge, according to the site planning drawing and the OTC service manual that came with the system. Checking the Ceiling Preparation Del hires an independent contractor to install the support beams and the Unistrut rails that hold the OTC.

  • Page 61: Room Layout

    EPEX/Omniflex IV System Service Manual Room Layout For an illustration of a typical room layout, refer to Figure 3-9 on page 3-17. However, for your installation, refer to the final site planning and the Radiographic Table to OTC drawings for specific details regarding the actual placement of equipment, including the floor location of the table.
  • Page 62 EPEX/Omniflex IV System Service Manual Setup Detent B Figure 3-7. “B” SETUP DETENT AND SWITCH CAM POSITIONS TABLE CENTER LATERAL DETENT TABLE CENTER LATERAL SWITCH CAM WALL “B” SETUP BUCKY CENTER SWITCH CAM TABLE C.L. 40”/44” “B” SETUP SID DETENT 40”/44”...
  • Page 63 EPEX/Omniflex IV System Service Manual Setup Detent C Figure 3-8. “C” SETUP DETENT AND SWITCH CAM POSITIONS TABLE CENTER LATERAL SWITCH CAM 40”/44” “B” SETUP SID SWITCH CAM TABLE C.L. 72” “C” SETUP SID SWITCH CAM TABLE CENTER LATERAL DETENT DK20_139.cdr To wire the chest setup A, B, or C detent, refer to the OTC and Collimator...
  • Page 64 EPEX/Omniflex IV System Service Manual Step Action Identify and mark on the floor the table’s longitudinal centerline. Identify and mark a line on the floor perpendicular to the length of the table, 1 ft 2 in. towards the foot end, from the foot end side of the table.
  • Page 65 EPEX/Omniflex IV System Service Manual Radiographic Table to OTC Layout Dimensions Figure 3-9. Radiographic Table to OTC Layout Dimentions 1’-2" Table C.L. ’C’ 11’-0" 5’-0" 4’-8" ’A’ 7’-3" ’B’ 2’-7" MC10_205.eps Installing the System Hardware 3-17...

  • Page 66: Starting The Otc Installation

    EPEX/Omniflex IV System Service Manual Starting the OTC Installation Refer to the OTC service manual that came with the system to begin the installation by installing the OTC on the rails. Starting the Table Installation Installing the table consists of the following procedures: •...

  • Page 67: Finishing The Otc Installation

    EPEX/Omniflex IV System Service Manual Step Action Measure the distance of the marked plumb line to the table center line or table base edge. Ensure the distance is within 1/16 in. for the entire length of the table. To install the table, refer to the EPEX Radiographic Table Service Manual.

  • Page 68: Assembling The Electronics Box On The Generator

    EPEX/Omniflex IV System Service Manual Assembling the Electronics Box on the Generator Figure 3-11. Basic Asssembly Diagram of Electronics Box on the Back of the Generator To assemble the electronics box: Step Action Assemble the frame (see Figure 3-12) on the back of the generator cabinet using the four bolts (P/N SCR-00027), lockwashers and flat washers provided and a 4 mm Allen wrench.
  • Page 69 EPEX/Omniflex IV System Service Manual Figure 3-13. Attaching the Frame Back of Generator Frame Bolts Frame Align the collimator supply on the brackets at the top part of the electronics box bracket (see Figure 3-14). Figure 3-14. Locating the Collimator Power Supply Box Installing the System Hardware 3-21...
  • Page 70 EPEX/Omniflex IV System Service Manual With the 7/16” socket, ratchet, extender, along with the four bolts (P/N 200-0045), flat washers and lockwashers provided, attach the power supply box (Figure 3-15). Figure 3-15. Attaching the Collimator Power Supply Box Attach the key switch (provided with the collimator) to the desired side of the lower back electronics box cover (P/N FAB-00112) with a “...
  • Page 71 EPEX/Omniflex IV System Service Manual Using a Phillips screwdriver and the screws (P/N 200-0029) provided, attach the bottom cover to the generator. Thread the wires from the key switch through the hole in the bottom of the collimator power supply box, as in Figure 3-17. Figure 3-17.
  • Page 72 EPEX/Omniflex IV System Service Manual Attach the two black wires from the keyswitch to the terminals to which the black wires are attached (numbers 4 and 5) along the second row of terminals. Remove the black wires that were previously attached there and tighten the terminal screws. Wrap and tuck the loose wires as necessary to keep them from shorting any of the power supply components or interfering with the operation of the door.

  • Page 73: Cabling The Epex/Omniflex Iv System

    EPEX/Omniflex IV System Service Manual Cabling the EPEX/Omniflex IV System For the electrical wiring connections for the EPEX/Omniflex IV System, refer to the Interconnect Diagram in Appendix E. Use it as a reference during the installation process. Cable routing both inside and outside the Generator cabinet can have a major impact on electrical noise interference.

  • Page 74: Cable Connections

    EPEX/Omniflex IV System Service Manual Step Action Route and connect the HV cables and grounds into the HV transformer in the bottom cabinet, ensuring anode and cathode are properly polarized with the X-ray tube. Note: Cables should be started at the OTC and worked backwards towards the Generator.

  • Page 75: Generator Lockout Switch

    EPEX/Omniflex IV System Service Manual Generator Lockout Switch A safety lockout switch (S3) is provided on the Generator interface board. When this switch is in the LOCKOUT position, the Generator cannot be switched on either from the console or from the adjacent service switch S2 on the Generator interface board.

  • Page 76: Excess Cabling

    EPEX/Omniflex IV System Service Manual To install the power to the warning light: Step Action Verify that the X ray room warning light and its power cable have been installed by the customer. Check the circuit breaker box and ensure that the power is turned OFF.

  • Page 77: Verify Protective Earth Ground

    EPEX/Omniflex IV System Service Manual Verify Protective Earth Ground The protective earth ground test is conducted to confirm the integrity of the protective earth ground (safety ground) connections. This test is conducted pursuant to IEC 601-1 standards, and must be performed at installation. A current of 25 A, 50 or 60 Hz, is applied to any surface accessible to the operator or patient for at least five seconds.

  • Page 78: Checks Before Power Up

    EPEX/Omniflex IV System Service Manual Checks Before Power Up Check the incoming power line at the Generator for proper phase using the Phase Sequence tester. Correct if necessary. Tighten the screws securing incoming power to fuses. Initial Voltage Measurements To perform the initial voltage measurements: Step Action Verify that the mains voltage and current capacity is correct...
  • Page 79 EPEX/Omniflex IV System Service Manual Step Action Verify that voltage at the main line fuses is at least 389 VAC. If it isn’t, then refer to the Three Phase Primary Tap section in your generator service manual for direction. Measure the line voltage across F4 and F6 on the driver/ auxiliary board in the HF power supply.
  • Page 80 Initial Volt Measurement Main Line Fuse Voltage Main Line Fuse Voltage L1 phase to L 2 phase L1 phase to L 2 phase L1 phase to L 3 phase L 2 phase to L 3 phase Driver/Auxiliary Board Voltage F4 to F6 Inital Verify that the voltage is 400 Vac Verify there is no voltage present...

  • Page 81: Checks After Power Up

    EPEX/Omniflex IV System Service Manual Checks After Power Up Turn on the 3-phase 480 Vac to the Generator cabinet at the wall circuit breaker. Verify LED lights on center of Generator I/O board are on. Check with voltmeter for 230 Vac across brown and blue wires on the Power Distribution board.

  • Page 82: Verify Room Warning Light

    EPEX/Omniflex IV System Service Manual Step Action Verify the following mechanical functions: • OTC movement • Bucky arm movement • Bucky movement • Table movement • Tower rotation • Lateral Tower/Bucky movement • Check all locks and brakes Verify portrait/landscape rotation is detected at the DirectRay Console and Collimator.

  • Page 83: Completing The Epex/Omniflex Iv System Installation

    EPEX/Omniflex IV System Service Manual Completing the EPEX/Omniflex IV System Installation After equipment installation is complete, the following actions must be taken: • Adjust and calibrate the system. Refer to Chapter 4. • Configure the system. Refer to Chapter 4 in the DirectRay Console Service Manual.
  • Page 84 EPEX/Omniflex IV System Service Manual 3-36 Installing the System Hardware...
  • Page 85 Chapter 4 Adjustments and Calibration This chapter provides the procedures required to adjust and calibrate the EPEX/Omniflex IV System. Adjustments may be required to fine tune the system after the initial installation or if components have been replaced. The calibration procedures assume that the system configuration setting for the X-ray Generator were factory set so additional adjustments required will be minimal to calibrate the system.

  • Page 86: Connecting The Service Laptop

    EPEX/Omniflex IV System Service Manual Connecting the Service Laptop Installing the GenWare Console Program The minimum requirements for running the GenWare Console are a 486-based computer capable of running Windows 3.1 or higher with at least 8 MB of RAM and 40 MB of free hard drive space. It should be noted that fulfilling the minimum requirements does not necessarily mean that the program will function at a satisfactory speed.

  • Page 87: Setting The Generator Utilities

    EPEX/Omniflex IV System Service Manual Setting the Generator Utilities Utility Menu The Utility menu displays the following options: • Setting Time and Date • Error Log • Statistics • Console Setting Time and Date To set the time and date: Step Action From the Utility menu, choose Set Time &...

  • Page 88: Error Log

    EPEX/Omniflex IV System Service Manual Error Log The ERROR LOG menu allows you to review the error messages stored in the Generator’s error log. Parameters such as kV, mA, time, receptor, focus, tech selection, field, film screen, and fluoro parameters are displayed simultaneously on the console LED displays.

  • Page 89: Generator Setup Menu

    EPEX/Omniflex IV System Service Manual Generator Setup Menu Receptor 1 Setup The Receptor Setup menus allow each of the image receptors to be Note: Do not use the default settings. programmed as defined in the following table. Receptor Properties Menu Tab Name Receptor 1 Setup Receptor Number...
  • Page 90 EPEX/Omniflex IV System Service Manual The following is an example Receptor 1 Setup screen. Term Definition Tomo Enables or disables tomographic operation Fluoro Enables or disables fluoroscopic operation Serial Allows repeated (serial) X-ray exposures without the need to re-prep after each exposure. Normally used with serial film changers (NO is disabled).
  • Page 91 EPEX/Omniflex IV System Service Manual Term Definition Interface Opts Selects pre-defined interface options: 0 = None 1 = InfiMed digital 2 = ATS ESI digital 3 = Gilardoni digital pulsed RAD 4 = Gilardoni digital HCF 5 = Not assigned at this time Tube Selects the tube assigned to that receptor.

  • Page 92: Aec Setup

    EPEX/Omniflex IV System Service Manual AEC Setup The AEC Setup menu allows you to set the AEC parameters for each AEC channel. The following is an example AEC setup screen. Parameter Definition AEC Channel Defines which AEC channel used by the receptor. This must be set to a valid channel or 0 as noted below.

  • Page 93: Receptor Defaults

    EPEX/Omniflex IV System Service Manual Receptor Defaults This selection is available only if Memory was set to DEF in the Receptor Setup menu 2. Parameter Definition Technique Default Focus Large Default Density Default Film Screen Default Fields Default Voltage (kV) Default Current (mA) Default Time (ms) Adjustments and Calibration...

  • Page 94: I/O Configuration

    EPEX/Omniflex IV System Service Manual I/O Configuration The I/O Configuration menus allow programming of the states of exposure for the inputs and the outputs on the Room Interface board. Input Menu Tab Standby Prep Ready Remote Exposure Remote Prep Rem. Fluoro Exp Console Exposure Console Prep Tomo Exposure...
  • Page 95 EPEX/Omniflex IV System Service Manual The following is an example of the Inputs screen. The set-up outputs are described in the following table. Output Menu Standby Prep Fluoro Ready Bucky 1 Select Bucky 2 Select Bucky 3 Select Tomo/Bucky 4 Select Spare Tomo Bucky...
  • Page 96 EPEX/Omniflex IV System Service Manual The following is an example of the Outputs screen. The grey stripes mean that the function is not enabled/inactive. The red stripes mean that the function is enabled/active. The arrow in the lower middle area points to one of the five states described below.

  • Page 97: Aec Density Calibration

    EPEX/Omniflex IV System Service Manual AEC Density Calibration Verify density settings using the GenWare software. If the values are incorrect, reenter the correct values in the blocks as described in the following table. AEC Density -8 Density -7 Density -6 Density -5 Density -4 Density -3 Density...

  • Page 98: Aec Setup

    EPEX/Omniflex IV System Service Manual AEC Setup The following table defines the AEC setup parameters. Parameter Definition Channel Selects the AEC channel to be programmed. Left Field Enables or disables the left field for the selected AEC channel (NO is disabled). Center Field Enables or disables the center field for the selected AEC channel (NO is disabled).
  • Page 99 EPEX/Omniflex IV System Service Manual Adjust the FS reference values for each kV in Film Screen 1, 2, and 3 according to the table shown below. Value 6.15 5.78 5.15 4.60 4.10 3.75 2.82 2.18 Click on the FS option menu tab and ensure the values are: RLF Compensation at 50 ms: RLF Compensation at 500 ms: RLF Compensation at 1000 ms: 0...

  • Page 100: X-Ray Tube Calibrations

    EPEX/Omniflex IV System Service Manual X-ray Tube Calibrations Prior to beginning tube auto-calibration, the tube used in this installation must be properly selected, and the Generator limits should be programmed. Refer to the procedures in the topic “Generator Setup Menu” on page 4-5. It is recommended that the replacement tube(s) be conditioned (seasoned) before beginning tube auto-calibration, refer to the first procedure in this topic.
  • Page 101 EPEX/Omniflex IV System Service Manual X-ray tubes that have not been used for more than 8 hours may suffer Note: Only low speed exposures are recommended thermal shock if operated at high mA and kV without a warm-up for the seasoning exposures, procedure.

  • Page 102: X-Ray Tube Warm Up

    EPEX/Omniflex IV System Service Manual X-ray Tube Warm Up Before subjecting any X-ray tube to radiographic kVp or mA loading, the Note: This procedure can be skipped if the tube tube must be warmed up to prevent possible arcing. Operating the tube at conditioning or seasoning low mA and gradually increasing the kV seasons the tube and might reveal has taken place within two...
  • Page 103 EPEX/Omniflex IV System Service Manual When auto-calibration is complete, press Close to exit the tube auto-calibration menu. The Generator Utility menu displays. Adjustments and Calibration 4-19...

  • Page 104: Collimator System Calibration

    EPEX/Omniflex IV System Service Manual Collimator System Calibration System Adjustments and Calibration In order to correctly set-up and operate the Collimator, it is necessary to adjust all the potentiometers sensing circuits. Refer to the Collimator, Overhead Tube Crane, and Table service manuals for the following setup and calibration procedures.

  • Page 105: Central Beam And X-Ray To Light Field Adjustments

    EPEX/Omniflex IV System Service Manual To correctly position each potentiometer, the following are the minimum resistance positions: • Tube Vertical Travel: When the tube is in its lower limit stop (close to floor), the resistance must be less than 100 Ω . •...

  • Page 106: Mechanical Checks Before Beam Alignment

    EPEX/Omniflex IV System Service Manual Mechanical Checks Before Beam Alignment To perform the mechanical checks: Step Action Determine which detent position (A, B, or C) setup is going to be used for the system. Refer to Figure 4-1 on page 4-23, Figure 4-2 on page 4-24, and Figure 4-3 on page 4-25.
  • Page 107 EPEX/Omniflex IV System Service Manual Detents for Position A Figure 4-1. “A” SETUP DETENT AND SWITCH CAM POSITIONS TABLE CENTER LATERAL TABLE CENTER LATERAL DETENT SWITCH CAM 72” A SETUP SID SWITCH CAM 40”/44” A SETUP SID SWITCH CAM TABLE C.L. WALL “A”...
  • Page 108 EPEX/Omniflex IV System Service Manual Detents for Position B Figure 4-2. “B” SETUP DETENT AND SWITCH CAM POSITIONS TABLE CENTER LATERAL DETENT TABLE CENTER LATERAL SWITCH CAM WALL “B” SETUP BUCKY CENTER SWITCH CAM TABLE C.L. 40”/44” “B” SETUP SID DETENT 40”/44”...
  • Page 109 EPEX/Omniflex IV System Service Manual Detents for Position C Figure 4-3. “C” SETUP DETENT AND SWITCH CAM POSITIONS TABLE CENTER LATERAL SWITCH CAM 40”/44” “B” SETUP SID SWITCH CAM TABLE C.L. 72” “C” SETUP SID SWITCH CAM TABLE CENTER LATERAL DETENT DK20_139.cdr Adjustments and Calibration 4-25...

  • Page 110: Aligning The Test Tool To The Directray Detector Center

    EPEX/Omniflex IV System Service Manual Aligning the Test Tool to the DirectRay Detector Center To align the test tool to the DirectRay Detector center: Step Action In portrait, position the Bucky to table centerline with the Bucky tower carriage in the home position. Place the Collimator test tool in the approximate center of the Bucky.

  • Page 111: Aligning Vsid Central Beam To The Directray Detector Center

    EPEX/Omniflex IV System Service Manual Aligning VSID Central Beam to the DirectRay Detector Center To align the VSID central beam to the DirectRay Detector center: Step Action Place the beam alignment tool (Plexiglas cylinder) in the center of the Collimator tool. Refer to Figure 4-4. Place a circular level on top of the beam alignment tool and shim the alignment tool until it is level.
  • Page 112 EPEX/Omniflex IV System Service Manual Step Action If the images of the two beads overlap, the central beam is perpendicular to within 0.5°. If the image of the larger bead intercepts the first circle, the beam is about 1.5° away from perpendicular. Refer to Figure 4-5.

  • Page 113: Verifying Vsid X-Ray Field Centered To The Directray Detector Center

    EPEX/Omniflex IV System Service Manual Verifying VSID X-ray Field Centered to the DirectRay Detector Center To verify VSID X-ray field centered to DirectRay Detector center: Step Action Using the measure function in DRIVEL, measure from the central beam spot on the beam alignment tool to all four edges of the black X-ray field.

  • Page 114: Aligning The Collimator Light Field To The X-Ray Field

    EPEX/Omniflex IV System Service Manual Aligning the Collimator Light Field to the X-ray Field To align the Collimator light field to the X-ray field: Note: If the light field to the X-ray is too small, refer to the Collimator service manual Step Action that came with the system.
  • Page 115 EPEX/Omniflex IV System Service Manual Step Action If the light field is aligned, repeat the entire test for other commonly used distances. For suggested exposures and allowable errors at different distances, refer to Table 4-2. If the light field is not aligned, go to step 7. Alignment at one distance does not guarantee alignment at all other distances.

  • Page 116: Aligning The Collimator Crosshair To The X-Ray Field

    EPEX/Omniflex IV System Service Manual Step Action The misalignment verified in step 5 could be caused by one of the following possibilities: • The light field is not centered in transversal direction. Refer to the Collimator service manual that came with the system for the adjustments.

  • Page 117: Aligning The Hsid Central Beam And X-Ray Field Center To Directray Detector Center

    EPEX/Omniflex IV System Service Manual Aligning the HSID Central Beam and X-ray Field Center to DirectRay Detector Center To align the HSID central beam: Step Action Position the X-ray tube and Bucky to the maximum HISD (A2, B2, or C2). Align the light field to the test tool.

  • Page 118: Checking The Size Of The X-Ray Field To Collimator Indicated Size Full Field

    EPEX/Omniflex IV System Service Manual Checking the Size of the X-ray Field to Collimator Indicated Size Full Field To check the size of the X-ray field to Collimator indicated size full field: Step Action Set the Collimator indicated size to 43 x 35 cm at 100 cm SID using the Auto function.

  • Page 119: Checking The Size Of The X-Ray Field To Collimator Indicated Size Full Field At 180 Cm

    EPEX/Omniflex IV System Service Manual Checking the Size of the X-ray Field to Collimator Indicated Size Full Field at 180 cm To check the size of the X-ray field to Collimator indicated size at 180 cm: Step Action Set the Collimator indicated size to 43 x 35 cm at 180 cm SID using the Auto function on the Collimator face.

  • Page 120: Checking The Size Of The X-Ray Field To Collimator Indicated Size At 180 Cm

    EPEX/Omniflex IV System Service Manual Checking the Size of the X-ray Field to Collimator Indicated Size at 180 cm To check the size of the X-ray field to Collimator indicated size at 180 cm: Step Action Set the Collimator blades to 18 x 14 indicated on the Collimator at 180 cm.

  • Page 121: Testing Calibration

    EPEX/Omniflex IV System Service Manual Testing Calibration To test calibration, use the following form: Testing Calibration Detector Array Centerline LONG error = (A-B)/2 LAT error = (C-D)/2 X-ray Field + [LONG error] Ctr/Ctr error = [LAT error] Indicated size: 25 mm Longitudinal x 20 mm Lateral Light field size: _______ cm LONG x _______ cm LA T X-ray field size:...

  • Page 122: Calibrating The Directray Detector

    EPEX/Omniflex IV System Service Manual Calibrating the DirectRay Detector The DirectRay Detector should be calibrated weekly at the routine chest orientation of 72 in. HSID. In addition, if the daily flat field exposure procedure produces image tones that are not uniform or are otherwise unsatisfactory, the DirectRay Detector should be calibrated.
  • Page 123 EPEX/Omniflex IV System Service Manual Step Action Change the technique settings, as defined in your Calibration Test panel. Remove the grid. Take an exposure. The progress of the calibration displays in the calibration panel. If the calibration is successful, a 1 displays in the calibration panel. If the calibration is not successful, adjust the technique settings and take another exposure.

  • Page 124: Connecting Test Equipment

    EPEX/Omniflex IV System Service Manual Connecting Test Equipment Connecting the kV Meter Figure 4-7 illustrates the over-table HVL setup only for the Keithley Model 10100A Triad Field Service kit. Refer to the over-table HVL setup in the kV meter’s operator manual for detailed instructions. For any other kV meter manufacturers, refer to their operator manual for instructions.

  • Page 125: Connecting The Mas Meter

    EPEX/Omniflex IV System Service Manual To connect the kV meter: Step Action Place the kVp divider and stand on the Bucky. Install the filter pack in the kVp divider. Install the ion chamber in ion chamber holder. Connect the cable to the ion chamber and the kVp divider. Connect the other end of the cable to the dose meter.

  • Page 126: Adjusting Automatic Exposure Control (Aec)

    EPEX/Omniflex IV System Service Manual Adjusting Automatic Exposure Control (AEC) Introduction This topic covers interfacing and calibration of the AEC. AEC Limitations: Minimum Response Time The X-ray Generator (including the AEC pickup chamber) has a minimum response time from the start of the exposure command until there is a kV value sufficient to start producing X-rays.

  • Page 127: Aec Limitations: Maximum Exposure Times

    EPEX/Omniflex IV System Service Manual AEC Limitations: Maximum Exposure Times For diagnostic radiography, the FDA limit I ≥ 600 mAs in AEC. AEC Board The AEC board shown below is compatible with various makes/models of ion chambers (for example, AID, GE, Vacutec, Philips Amplimat). This AEC board is used as the Generator requires short AEC time compensation.

  • Page 128: Precalibration Notes

    EPEX/Omniflex IV System Service Manual Precalibration Notes This topic contains information that must be understood and confirmed prior to and/or during AEC calibration. The procedures in these topics require X-ray exposures. Take all safety precautions to protect personnel from X-radiation. CAUTION Should an improper technique be selected, or an AEC fault occur causing no AEC feedback signal to the Generator, the exposure will terminate if the...

  • Page 129: Aec Preliminary Overall Gain Calibration

    EPEX/Omniflex IV System Service Manual AEC Preliminary Overall Gain Calibration To determine the AEC overall gain: Note: DirectRay Detector calibration must be completed prior to Step Action performing this procedure. From the Generator Toolbox, acquire and accept an image using the technique below: 65 kVp 25 mA...
  • Page 130 EPEX/Omniflex IV System Service Manual AEC kVp Compensation for Film Screen 2 To determine the AEC kVp compensation for Film Screen 2: Step Action Connect the Service Laptop to the Generator. From the GenWare Utility AEC Calibration Points menu screen, choose Film screen 2.
  • Page 131 EPEX/Omniflex IV System Service Manual Step Action After the reference values have been determined for Film Screen 2, change the reference values in Film Screen 1 and 3 to match the reference values in Film Screen 2. Ensure that Film Screen 1, 2, and 3 reference values match. Note: The following screen is an example of the values in Film Screen 1.

  • Page 132: Aec Kvp Compensation For Film Screen 2

    EPEX/Omniflex IV System Service Manual AEC kVp Compensation for Film Screen 2 Delta Phantom 1.5 in. 3 in. 4.5 in. 4.5 in. 6 in. 6 in. 1.5 in. Thickness AEC ms DV (Mean) 4.10 3.75 2.18 Reference 6.15 5.78 5.15 2.82 (requirement: Delta <...

  • Page 133: Adjusting The Final Ion Chamber Preamplifier Gain

    EPEX/Omniflex IV System Service Manual Adjusting the Final Ion Chamber Preamplifier Gain To adjust the Ion Chamber Preamp gain (R26 on the Ion Chamber Preamplifier Board): The X-ray tube housing temperature may become excessive when taking numerous exposures or when the tube rotor runs for an extended period of time. Prevent damage to the X-ray tube by allowing the X-ray tube assembly time to cool during CAUTION testing.
  • Page 134 EPEX/Omniflex IV System Service Manual Step Action Use the following settings: 110 kVp 50 mA 100 ms back up time Acquire exposures and adjust the AEC preamplifier gain to the target calculated mAs ±0.1 mAs. Record the actual mAs for the AEC in the Adjusting the Final Ion Chamber Preamplifier Gain form in Appendix C.

  • Page 135: Ion Chamber Detector Balance-Preamp

    EPEX/Omniflex IV System Service Manual Ion Chamber Detector Balance–PreAmp Whenever the AEC has been replaced, the following procedure must be followed. It is also possible that you may need to make adjustments after performing service, particularly after replacing components or subassemblies. Avoid damage to the X-ray tube by carefully monitoring the tube housing temperature during testing.
  • Page 136 EPEX/Omniflex IV System Service Manual Step Action Record the milliseconds in the Verifying Ion Chamber Preamplifier Balance form in Appendix C. A sample of the form is shown following this procedure. Adjust cell #3’s balance so that it equals cell #2’s ms ±5%. If there are 5 ion chambers: Set the Bucky to Landscape orientation.
  • Page 137 EPEX/Omniflex IV System Service Manual Verifying Ion Chamber Preamplifier Balance Setup: Grid Speed medium Phantom 0 in. Field Size auto Balance Data: Landscape Portrait/Inverted Portrait AEC Detector(s) Detector Selected #Lt. #Ctr #Rt. #Rt. #Rt. Exposure ms Pass: ________ EPEX Ion Chamber Balance.cdr Adjustments and Calibration 4-53...
  • Page 138 EPEX/Omniflex IV System Service Manual 4-54 Adjustments and Calibration...

  • Page 139: Preventive Maintenance

    Chapter 5 Preventive Maintenance Service procedures must be performed by trained personnel only. This chapter contains system preventive maintenance schedules and checklists Serviceability and Repairability All provided products and associated components are designed for replacement or service in a hospital environment. Repair of the DirectRay Detector, the DirectRay Controller, and the DirectRay Console is to be done only by Del authorized representatives.

  • Page 140: In-Service Observation

    EPEX/Omniflex IV System Service Manual In-Service Observation Observe the operation of the locking mechanisms as the Tower and Bucky are prepared for use. If the mechanism fails to lock or release, the unit should immediately be removed from service and the failure repaired. Observe the operation of the DirectRay Detector rotation mechanism each time orientation is changed.

  • Page 141: Semi-Annual Preventive Maintenance

    EPEX/Omniflex IV System Service Manual Semi–Annual Preventive Maintenance Semi-Annual Preventive Maintenance Checklist Inspection Date: Site: System: Inspection Comments Clean and re-grease all HV connections using vapor proof compound. Clean the main cabinet as needed. Refer to the Generator service manual. Perform the X-ray tube auto calibration routine.
  • Page 142 EPEX/Omniflex IV System Service Manual Semi-Annual Preventive Maintenance Checklist System (cont.): Inspection Comments Check for dust in DirectRay Console. Check DirectRay Console fan. Check all connections and make sure they are secure. Check the UPS. Page 2 of 2 EPEX Omniflex Semi-Annual 2.cdr Preventive Maintenance...

  • Page 143: Annual Preventive Maintenance

    EPEX/Omniflex IV System Service Manual Annual Preventive Maintenance Annual Preventive Maintenance Checklist System: Inspection Comments Open the Generator cabinet and examine the unit for any visible damage: missing or loose ground connections, oil leaks, damaged cables, and so on. Ensure that there are no obstructions blocking any of the ventilation holes or louvers on the Generator cabinet.

  • Page 144: System Preventive Maintenance

    EPEX/Omniflex IV System Service Manual System Preventive Maintenance For preventive maintenance for the Collimator, refer to the manufacturer’s service manual. For preventive maintenance for the X-ray tube, refer to the manufacturer’s service manual. For preventive maintenance for the Overhead Tube Crane, refer to the manufacturer’s service manual.

  • Page 145: Repair And Replacement

    Chapter 6 Repair and Replacement This chapter provides information on the location of instructions for the repair and replacement of EPEX/Omniflex IV System components. For the Generator, refer to the manufacturer’s documentation. For the Overhead Tube Crane, refer to the manufacturer’s documentation.
  • Page 147 Chapter 7 Diagnostics and Troubleshooting This chapter describes the diagnostic and troubleshooting procedures for the EPEX/Omniflex IV System. Contents Subject Page Troubleshooting Overview ..............7-2 Troubleshooting Service Tools ............... 7-3 Accessing Tail Log Files................. 7-7 Responding to Error Messages ............. 7-10 Troubleshooting System Problems ............

  • Page 148: Diagnostics And Troubleshooting

    EPEX/Omniflex IV System Service Manual Troubleshooting Overview The System Controller initiates service diagnostics via the SCSI-2 interface. Service diagnostics involves initiating power-on tests and component self-tests. Errors are reported to a log file. This chapter provides: • General information on error logs •...

  • Page 149: Troubleshooting Service Tools

    EPEX/Omniflex IV System Service Manual Troubleshooting Service Tools When Service logs in (locally), the DirectRay Console Task Launcher is opened, but no functions are automatically started. There are also additional minimized windows. Figure 7-1. DirectRay Console Task Launcher Netscape The top layer Netscape page is the default screen to service menus and files.

  • Page 150: Calculator

    EPEX/Omniflex IV System Service Manual From the UNIX Toolbar, the terminal popup menu is used to telnet to other network devices or to enter UNIX command lines. Service can telnet to the DirectRay Console to obtain command lines remotely and to upload/ download files to the DirectRay Console using the FTP protocol.

  • Page 151: Error And Warning Reporting

    EPEX/Omniflex IV System Service Manual Error and Warning Reporting Errors in the DirectRay Controller are reported over the SCSI system control interface. Errors reported over the system control interface are classified into two types: • Command Errors–are errors related to commands sent over the system control interface.
  • Page 152 EPEX/Omniflex IV System Service Manual The error and warning reporting system is illustrated in the following figure. Figure 7-3. Error and Warning System Diagnostics and Troubleshooting...

  • Page 153: Accessing Tail Log Files

    EPEX/Omniflex IV System Service Manual Accessing Tail Log Files Error log files are accessed using the DROC Task Launcher. Error log files are organized by module. To access the end of the log, use the Start Tail Log. To access the entire log file, use the Start More Log. For example, the end of the list of errors concerning DICOM printing are accessed through the Start Tail Log.
  • Page 154 EPEX/Omniflex IV System Service Manual Error Log Module Table 7-1. Status Bar Meaning 1. RMS Server Lists, adds, deletes the resources. 2. prestart_001 Cleanup utility (creates, then completes). 3. msgserver_001 Holds, adds, deletes the alarms. 4. rados_001 The database for patient demographics. 5.

  • Page 155: Accessing Log Files In A Terminal Session

    EPEX/Omniflex IV System Service Manual Accessing Log Files in a Terminal Session Typically, you will access log files using the Task Launcher window. However, you may need to view the ASCII logs in a terminal session window. For example, if you have logged in as apps and are running or have run Netscape, you will not be able to view the logs using Task Launcher.

  • Page 156: Responding To Error Messages

    EPEX/Omniflex IV System Service Manual Responding to Error Messages Error codes at the system level, possible causes, and recommended action to remedy the problem are detailed in Table 7-2. System-Level Error Codes Table 7-2. Error Error Type Possible Cause Recommended Action Undetermined mAs •...
  • Page 157 EPEX/Omniflex IV System Service Manual System-Level Error Codes Table 7-2. Error Error Type Possible Cause Recommended Action Bucky Fault Drive motor not moving 1. Verify U-arm J1 connector has power. 2. Deselect Bucky and press RESET (located in the radiography control group).
  • Page 158 EPEX/Omniflex IV System Service Manual System-Level Error Codes Table 7-2. Error Error Type Possible Cause Recommended Action Generator Lost 1. Verify that the HF Logic Board is Communication with X–ray properly seated. Control 2. Verify the baud rate between the HF Logic Board and the CPU Board.
  • Page 159 EPEX/Omniflex IV System Service Manual System-Level Error Codes Table 7-2. Error Error Type Possible Cause Recommended Action Sync Pulse Error Press RESET (located in the radiography control group) and try the exposure again. No Digital Input • Exposure request timed out 1.

  • Page 160: Troubleshooting System Problems

    EPEX/Omniflex IV System Service Manual Troubleshooting System Problems Symptoms of system problems, probable causes, and recommended actions are detailed in Table 7-3. Troubleshooting System Problems Table 7-3. Symptom Possible Cause(s) Recommended Action X-ray Generator Start Up • Check DS1 light on Generator Transformer. Failure •...
  • Page 161 EPEX/Omniflex IV System Service Manual Troubleshooting System Problems Table 7-3. Symptom Possible Cause(s) Recommended Action Status Bar Indicates • Sleep condition, press B to wake up the DirectRay Problem Controller. • Error condition is blocked, call Service. DirectRay Detector Will •...
  • Page 162 EPEX/Omniflex IV System Service Manual Troubleshooting System Problems Table 7-3. Symptom Possible Cause(s) Recommended Action Filament Failure Failure to satisfy logic • Check WAMI connections. requests. • Replace X-ray tube. • Check System Controller Board. • Check Remote ON/OFF Board. •...
  • Page 163 Appendix A EPEX/Omniflex IV Specifications This appendix details the EPEX/Omniflex IV System specifications. Contents Subject Page Subsystem Specifications ..............A-2 Environment..................A-12 Installation Requirements ..............A-12...

  • Page 164: Epex/Omniflex Iv Specifications

    EPEX/Omniflex IV System Service Manual Subsystem Specifications This topic contains specifications for the following EPEX/Omniflex IV subsystems: • DirectRay Image Capture system (DirectRay Detector and DirectRay Controller) • Overhead Tube Crane • DirectRay Console • X-ray Generator • X-ray Tube •...
  • Page 165 EPEX/Omniflex IV System Service Manual Overhead Tube Crane Telescopic Carriage Weight 170 kg (374 lb) Rails Weight 170 kg (374 lb) Telescopic Carriage Size Width: 70 cm (28 in.) Depth: 95 cm (38 in.) Height: 105 cm (42 in.) Rail Size Width: 85 cm (34 in.) Depth: 455 cm (182 in.) Height: 50 cm (20 in.)
  • Page 166 EPEX/Omniflex IV System Service Manual Maximum Effort for Lateral < 5 kg (starting effort) Movement Longitudinal Movement Brake Type Negative–24 Vdc Lateral Movement Brake Type Negative–24 Vdc Vertical Movement Brake Type Negative–24 Vdc Tube Arm Rotation Brake Type Negative–24 Vdc Tube Angulation Brake Type Negative–24 Vdc FFD Indication Type...

  • Page 167: Overhead Tube Crane Physical Specifications

    EPEX/Omniflex IV System Service Manual Overhead Tube Crane Physical Specifications The outline of the Overhead Tube Crane is detailed in the following illustration. Overhead Tube Crane Outline Figure A-1. EPEX/Omniflex IV Specifications...
  • Page 168 EPEX/Omniflex IV System Service Manual The tube coverage area is illustrated in the following drawing. Tube Coverage Area Figure A-2. EPEX/Omniflex IV Specifications...

  • Page 169: Directray Console

    EPEX/Omniflex IV System Service Manual DirectRay Console Weight 159 kg (350 lb) Base Width: 71 cm (28 in.) Depth: 49 cm (19 in.) Height: 100 cm (39 in.) with monitor 150 cm (59 in.) without monitor Top Surface Width: 84 cm (33 in.) Depth: 56 cm (22 in.) Clearance 30 cm (12 in.) minimum on both sides...

  • Page 170: X-Ray Generator

    EPEX/Omniflex IV System Service Manual X-ray Generator Cabinet Weight 159 kg (350 lb) Cabinet Width: 46 cm (18 in.) Dimensions Depth: 41 cm (16 in.) Height: 145 cm (57 in.) Output 80 kV high frequency 100 mA @ 80 kVP 800 mA @ 100 kVP 500 mA @ 150 kVP 40 to 150 kVP...

  • Page 171: X-Ray Generator Physical Specifications

    EPEX/Omniflex IV System Service Manual X-ray Generator Physical Specifications The outline of the X-ray Generator is detailed in the following illustration. Generator Outline Figure A-3. EPEX/Omniflex IV Specifications...

  • Page 172: X-Ray Tube

    EPEX/Omniflex IV System Service Manual X-ray Tube Nominal Voltage 150 kVp Anode Speed 3000/9000 rpm Anode Heat Storage Capacity 400 kHu Focal Spots 6 and 1/2 Anode Material Target Diameter 101.6 mm Maximum Anode Cooling Rate 2 kHu/sec Target Angle 13.5°...

  • Page 173: Radiographic Table

    EPEX/Omniflex IV System Service Manual Radiographic Table Table Weight 403 kg (895 lb) Table Dimensions Length: 213 cm (84 in.) Width: 94 cm (37 in.) Height: Variable Table Capacity 203 kg (450 lb) weight capacity Table Top Travel ±50 cm (20 in.) longitudinal ±13 cm (5 in.) transverse 26 cm (10 in.) vertical top travel Rotation...

  • Page 174: Environment

    EPEX/Omniflex IV System Service Manual Environment Transit/Storage Temperature: -20° to +45°C (-4° to +113°F), assuming the DirectRay Detector is shipped in a Del insulated shipping container Maximum gradient: 15°C (27°F) per hour, assuming the unit is stored in a shipping container approved by Del. Relative humidity: 30% to 80% (allow condensation dry time before installing)
  • Page 175 Appendix B Recommended Tools The following tools and equipment are recommended for installation and/ or service of the EPEX/Omniflex IV equipment. Ensure that these items are available and in good condition before beginning any procedures. Contents Subject Page Hand Tools ....................B-2 Metric Tools ....................

  • Page 176: Appendix B: Recommended Tools

    EPEX/Omniflex IV System Service Manual Hand Tools The following is a list of the hand tools required: • Calipers, Precision • Crowbar • Grease, Insulating, Silicone • Hammer, Claw • Hammer, Rawhide • Hand Files, Assorted Sizes • Heat Gun •...
  • Page 177 EPEX/Omniflex IV System Service Manual • Blade, Screwdriver, Torx, No. T10 • Blade, Screwdriver, Torx, No. T15 • Blade, Screwdriver, Torx, No. T20 • Blade Extension, 4-in. • Blade Extension, 7-in. • Cable, Patch, and Coupler, RJ-11 • Cable, Patch, and Coupler, RJ-45 •...
  • Page 178 EPEX/Omniflex IV System Service Manual • Pliers with Cutter, Long Nose, 6-in. • Scale, Metal, 6-in. • Scissors, Electrician’s • Screwdriver, Phillips, Large, No. 3 • Screwdriver, Jeweler’s • Screwdriver, Pocket, Combination • Screwdriver, Reversible, Stubby • Screwdriver, Screwholding, Phillips-type •...
  • Page 179 EPEX/Omniflex IV System Service Manual • Wire Labels • 10 to 12 Gauge • 10 to 16 Gauge • 6 to 10 Gauge • 10 to 16 Gauge • Wrench Set Standard And Metric • Socket Set Standard And Metric •...

  • Page 180: Metric Tools

    EPEX/Omniflex IV System Service Manual Metric Tools The following is a list of the metric tools required: • Wrench set, combination, 12 pt fractional/ metric, 18 pcs • Wrench set, 10 pc midget metric combination wrench combo set • Balldriver set, 1.5 to 10 mm L-wrench, 9 pcs •...

  • Page 181: Test Equipment

    EPEX/Omniflex IV System Service Manual Test Equipment The following is a list of the test equipment required: • Antistatic Wrist Strap and Grounding Cord (Sterling Static Protective Field Service Kit [PN 662191-501]) • Cable, Coaxial • Cable, Triaxial • Computer, Laptop, DOS-compatible •...

  • Page 183: Appendix C Forms

    Appendix C Forms This appendix provides the required forms for the installation, calibration, and preventive maintenance of the EPEX/Omniflex IV System. Contents Subject Page System Installation.................. C-3 System Calibration Forms ..............C-9 Preventive Maintenance Forms ............C-23...

  • Page 185: System Installation

    EPEX/Omniflex IV System Service Manual System Installation On the following page is the form required when installing the system using the procedures in Chapter 3. Forms...

  • Page 187: System Calibration Forms

    EPEX Omniflex System Installation Checklist Delivery Completed Installing the Table Equipment Unpacked Place the table Return the Detector Array TempTale® Drill the Holes Positioning the Equipment Secure the Table Operator Console Installation: Assemble the Tower UPS Charged and Grounded Install the Detector Array CPU Connected Cable to the Generator Array Controller...
  • Page 189 Initial Volt Measurement Main Line Fuse Voltage Main Line Fuse Voltage L1 phase to L 2 phase L1 phase to L 2 phase L1 phase to L 3 phase L 2 phase to L 3 phase Driver/Auxiliary Board Voltage F4 to F6 Inital Verify that the voltage is 400 Vac Verify there is no voltage present...
  • Page 191 EPEX/Omniflex IV System Service Manual System Calibration Forms On the following pages are the forms required when calibrating the system using the procedures in Chapter 4. Forms...
  • Page 193 Testing Calibration Detector Array Centerline LONG error = (A-B)/2 LAT error = (C-D)/2 X-ray Field + [LONG error] Ctr/Ctr error = [LAT error] Indicated size: 25 mm Longitudinal x 20 mm Lateral Light field size: _______ cm LONG x _______ cm LA T X-ray field size: _______ cm LONG x _______ cm LA T Light to X-ray center/center error:...
  • Page 195 AEC Preliminary Overall Gain Calibration AEC Preliminary Overall Gain Measured DV for Image Center (ROI) Cell #2 ________________ Pass: ________ EPEX Preliminary Overall Gain.cdr...
  • Page 197 AEC kVp Compensation for Film Screen 2 Delta Phantom 1.5 in. 3 in. 4.5 in. 4.5 in. 6 in. 6 in. 1.5 in. Thickness AEC ms DV (Mean) 2.18 5.15 4.10 3.75 Reference 6.15 5.78 2.82 (requirement: Delta < 200 to the acquired DV (Mean) at 65 kVp.) Pass: ________ EPEX Omniflex kVp Compensation for Film 2.cdr...
  • Page 199 2nd Iteration AEC kVp Compensation for Film Screen 2 Delta Phantom 3 in. 1.5 in. 1.5 in. 4.5 in. 4.5 in. 6 in. 6 in. Thickness AEC ms DV (Mean) 5.15 Reference (requirement: Delta < 200 to the acquired DV (Mean) at 65 kVp.) Pass: ________ EPEX Omniflex kVp Compensation for Film 2A.cdr...
  • Page 201 Adjusting the Final Ion Chamber Preamplifier Gain mR/mAs AEC Target mAs DV (Mean) Pass: ________ EPEX Preamplifier Gain.cdr...
  • Page 203 Verifying Ion Chamber Preamplifier Balance Setup: Grid Speed medium Phantom 0 in. Field Size auto Balance Data: Landscape Portrait/Inverted Portrait AEC Detector(s) Detector Selected #Lt. #Ctr #Rt. #Rt. #Rt. Exposure ms Pass: ________ EPEX Ion Chamber Balance.cdr...
  • Page 205 EPEX/Omniflex IV System Service Manual Preventive Maintenance Forms On the following pages are the forms required when performing system preventive maintenance, including: • Semi-Annual • Annual For preventive maintenance forms for system components, refer to service manuals that came with the system. Forms C-23...
  • Page 207 Semi-Annual Preventive Maintenance Checklist Inspection Date: Site: System: Inspection Comments Clean and re-grease all HV connections using vapor proof compound. Clean the main cabinet as needed. Refer to the Generator service manual. Perform the X-ray tube auto calibration routine. Refer to Chapter 4. V erify the calibration of the Generator.
  • Page 209 Semi-Annual Preventive Maintenance Checklist System (cont.): Inspection Comments Check for dust in DirectRay Console. Check DirectRay Console fan. Check all connections and make sure they are secure. Check the UPS. Page 2 of 2 EPEX Omniflex Semi-Annual 2.cdr...
  • Page 211 Annual Preventive Maintenance Checklist System: Inspection Comments Open the Generator cabinet and examine the unit for any visible damage: missing or loose ground connections, oil leaks, damaged cables, and so on. Ensure that there are no obstructions blocking any of the ventilation holes or louvers on the Generator cabinet.
  • Page 213 Appendix D Field Replaceable Units This appendix lists the names and part numbers for the most commonly field-replaced EPEX/Omniflex IV System components. Contents Subject Page Ordering Parts ..................D-2...
  • Page 214 EPEX Omniflex System Service Manual Ordering Parts Parts can be ordered from: Del Medical Systems 11550 West King Streer Franklin Park, IL USA Service: 1-800-800-6006 Part Units per Component Number Description Assembly DirectRay Console 100-0042 WAMI Power Supply, 12 Vdc...
  • Page 215 EPEX Omniflex System Service Manual Part Units per Component Number Description Assembly DirectRay Console (cont.) 010-1154 Service Kit (Cable & Keyboard) 180-0459 Cable Video BNC (5) to VGA 330-0013 Fans 110 V 180-0456 Cord Power Supply (UPS) 100-0044 115 V UPS Oneac 120-0180 120 V Modem US Robotics 33kbs 00839-0 120-0196...
  • Page 216 EPEX Omniflex System Service Manual Part Units per Component Number Description Assembly Collimator (cont.) 590-0516 Lamp Switch Pushbutton Assy 590-0517 Lamp Light Dze 24Vac, 150W 590-0518 Socket Lamp 590-0519 Current Limit Resistor 590-0520 TRIAC 15 A Light Timer 590-0521 Prism Centering Line 590-0522 Tilt Switch 590-0523...
  • Page 217 EPEX Omniflex System Service Manual Part Units per Component Number Description Assembly Bucky (cont.) 590-0034 Bucky Grid Present Sensor 590-0035 Bucky Fan Assembly 590-0036 Bucky Grid Slide Block W/Harness 590-0037 Bucky Flag, Grid Position 590-0038 Bucky Top Cover Plate 590-0039 Bucky Spring Plunger 590-0040 Bucky Drive Assembly...
  • Page 218 EPEX Omniflex System Service Manual Part Units per Component Number Description Assembly 590-0052 Fuse, 60A, 600 V, OTS60 590-0053 Fuse, 2A, 500 V, Time Delay, FNQ2 590-0057 Fuse, 1.6A, 250 V, Slow Acting, GDA1.6 590-0058 Fuse, 2A, 250 V, Slow Acting, GDA2 590-0059 Fuse, 2.5A, 250 V, Slow Acting, GDA2.5 590-0060...
  • Page 219 EPEX Omniflex System Service Manual Part Units per Component Number Description Assembly Overhead Tube Crane 590-0483 Display PCB with S-9906 S/w (OTC) (cont.) 590-0484 Display PCB with S-9907 S/w 590-0468 CAM Follower, 1/2 Inch Dia 590-0469 Limit Switch 590-0470 Rotational Potentiometer Assy 590-0471 Rotational Potentiometer Cable 590-0472...
  • Page 220 EPEX Omniflex System Service Manual Part Units per Component Number Description Assembly Radiographic Table (cont.) 030-2580 Cover, Outer Pivot, Front 030-2643 Actuator, Bucky Switch 030-2646 Cover, Tower Side, Middle 030-2647 Cover, C” Weight Cable, Left 030-2648 Cover, C” Weight Cable, Right 030-2651 Cover, Tower Vertical Carriage 030-2652...
  • Page 221 EPEX Omniflex System Service Manual Part Units per Component Number Description Assembly Radiographic Table (cont.) 295-0233 Cover, Right Side 295-0234 Assembly, Cam Follower 295-0235 Brake Assembly, Long 295-0236 Bearing, Cross-Travel 295-0237 Brake Assembly, Short 295-0238 Assembly, Thrust Nut 295-0239 Cam Follower 295-0240 Bearing, Ball 295-0241...
  • Page 222 EPEX Omniflex System Service Manual Part Units per Component Number Description Assembly Interconnect Cables (cont.) 180-0473 Cable, Bucky Handle & Arm 180-0474 Cable, Bucky Rotation 180-0475 Cable, Vert Brks Rotation Joint 180-0476 Cable, Car/Arm & Bucky Pos. 180-0477 Cable, Panel, Handle Arm-A & B 180-0478 Cable, Rotation Sensor &...
  • Page 223 EPEX Omniflex System Service Manual Field Replaceable Units D-11...
  • Page 225 Appendix E EPEX/Omniflex IV System Wiring Diagrams This appendix includes the schematics for the EPEX/Omniflex IV System.
  • Page 227 Glossary The glossary contains general terms that are used in the service manual. Accession Number In DICOM, a term to uniquely identify a visit to a site by a patient. The meaning and use of accession numbers is not consistent in medical information.
  • Page 228 EPEX/Omniflex IV System Service Manual Artifact(s) Foreign or artificial marks on a radiograph that may be caused by static, dirty or damaged screens, loose foreign bodies in the cassette, and so on. Attenuation The reduction of the intensity of the X-ray beam as it traverses matter by either the absorption or deflection of photons from the beam.
  • Page 229 EPEX/Omniflex IV System Service Manual Collimator Regulates the size and shape of the X-ray beam to accurately localize the area of interest on the patient, while reducing overall patient irradiation exposure. Compton Scattering Name for almost all of the scatter radiation encountered in diagnostic radiology.
  • Page 230 Digital Signal A signal whose units are represented by either one of only two states, on or off, yes or no, 1 or 0. Since no gradations in between are permitted, digital signals are precise, unambiguous, and quite immune to noise. Refer to Analog.
  • Page 231 EPEX/Omniflex IV System Service Manual Dynamic Range Shades of gray. Edge Enhancement Image processing treatment to sharpen the appearance of edges. EPEX Del digital radiography system designed to optimize the DirectRay technology. Exam Specific Algorithm. Ethernet A communications protocol that runs on different types of cable at a data signaling rate of 10 million bits per second.
  • Page 232 EPEX/Omniflex IV System Service Manual Goniometer Device on the Rotating Arm that measures its position. Grid Antiscatter Grid. Grid Ratio The ratio between the height of the lead strips and the distance between them. Graphical User Interface Hardcopy Images Printed representations of images or text. Health Level 7 (HL-7) Standard that defines the format for interchange of text files between health care databases.
  • Page 233 EPEX/Omniflex IV System Service Manual Latent Image Image stored in the silver halide emulsion made manifest by chemical processing. Lateral Possible view position for X-ray exposure so that the X-ray beam passes from one side to the other. Pertains to the side away from the midline. Latitude Range of X-ray exposure over which a radiograph is acceptable.
  • Page 234 EPEX/Omniflex IV System Service Manual Moving Grid Grid that moves according to a preset time of exposure, or reciprocates continuously. Noise Noise destroys image quality. Nyquist Frequency The highest frequency that can be accurately reproduced by the detector. Oblique Possible view position for X-ray exposure. Opaque Impenetrable by light or X-rays in the diagnostic quality range.
  • Page 235 EPEX/Omniflex IV System Service Manual RADEX Del digital radiography system designed to optimize the DirectRay technology. Radiation Absorbed Dose A unit that measures radiation in terms of the absorbed dose. For (RAD) radiologic procedures it is equivalent to the REM. Radiation Oncology A branch of radiology that deals with the therapeutic applications of radiant energy.
  • Page 236 EPEX/Omniflex IV System Service Manual RISC Reduced Instruction Set Computer. Roentgen The unit of radiographic exposure dose designed by the symbol R. One R of exposure will produce in tissue an absorbed dose of approximately one rad. Named after Wilhelm Conrad Roentgen, the scientist that discovered X-rays in 1895.
  • Page 237 EPEX/Omniflex IV System Service Manual Staging Area The area where the Del representative unpacks and assembles the components of the system. Sterotactic Technique of viewing objects from two slightly different angles to give a perception of depth. Study A specific instance of a procedure consisting of a set of X-ray images. Supine Lying face up.
  • Page 238 EPEX/Omniflex IV System Service Manual View Prescription for the technique factors and geometric arrangement of the X-ray source, patient, and image sensor that yields and image of organs of interest seen on a specific orientation. Visit A set of studies identified in a locally unique manner and performed on a particular patient at a particular site for a particular reason.

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