OEC 9800C-Arm Service Manual

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OEC

9800 C-Arm

Service Manual

• Front Matter

• Introduction/Safety

• C-Arm Subsystem

• AC Power Distribution

• DC Power Distribution

• Battery Charging

• System Communications

• Interlocks

• Stator Power and Control

• Pre-Charging

• X-Ray On, X-Ray Disable

• kV Generation

• mA Generation

• Automatic Brightness Stabilization

Contents

Installation

Service

• Collimator

• Image Control

• Cooling

• Flip Flop Motion

• Orbital Motion

• Wig Wag Motion

• Horizontal Cross Arm Motion

• L-Arm Motion

• Vertical Column Motion

• Steering and Braking

• Diagnostics

• Calibration

• Replacement

Schematics

Periodic Maintenance

Illustrated Parts

Table of Contents

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Summary of Contents for OEC 9800C-Arm

Page 1 ® 9800 C-Arm Service Manual • Collimator • Front Matter • Introduction/Safety • Image Control • C-Arm Subsystem • Cooling • Flip Flop Motion • AC Power Distribution • DC Power Distribution • Orbital Motion • Wig Wag Motion • Battery Charging •...
Page 2 C-Arm Subsystem C-Arm Subsystem Circuit/Mechanical Descriptions..............................2 Subsystem Description..................................2 Major Assembly and Control Locations............................8 Subystem Functional Breakdown..............................14 Functional Tests.....................................14 Boot Test .....................................14 Fluoro Mode Performance Check ...............................15 Film Mode Performance Check..............................16 Mechanical Movement Check ..............................16 Brakes ....................................16 Wheels/Casters ..................................17 Wig Wag ....................................17 Flip Flop (Standard C-Arms only) ............................17 L-Rotation ....................................17 Orbital .....................................17...
Page 3 C-Arm Subsystem Circuit/Mechanical Descriptions The following paragraphs describe basic electrical and physical features of the 9800 SERIES C-Arm Subsystem (referred to hereafter as the C-Arm). Subsequent chapters in this manual explain subsystem operation in functional concepts, focusing on how subsystem components interact in providing those functions. You can obtain additional information from the C-Arm Interconnect Diagram and Operators Manual, and the Workstation Operators and Service Manuals.
Page 4 C-Arm Subsystem C-Arm Variation Standard C-Arm Super C Options Cardiac Cardiac Non-cardiac Non-cardiac 9-inch Image Intensifier 9-inch Imge Intensifier 12-inch Imge Intensifier Positioning Wig Wag Wig Wag L-Arm L-Rotation Orbital Orbital Flip Flop Horizontal Cross-Arm Horizontal Cross-Arm Vertical Lift Vertical Lift Contents Installation Service...
Page 5 C-Arm Subsystem L-Rotation Control Horizontal Cross-Arm Orbital Assembly L-Arm Radial Assembly Flip Flop Vertical Lift Column Standard C-Arm Mechanical Movement Systems Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 6 C-Arm Subsystem Flip-Flop Horizontal Cross Arm L-Rotation Vertical Lift Wig-Wag Orbital Standard C-Arm Motions Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 7 C-Arm Subsystem Camera Cover Control Panel Housing L-Rotation Assembly Vertical Column Collimator Cover X-Ray Tube Cover Front Leg Cover Right Front Cover (Left Front Cover similar, not shown for clarity) Rear Cover Assembly Cross Beam End Cap Super-C Mechanical Movement Systems Contents Installation Service...
Page 8 C-Arm Subsystem Orbital L-Rotation Horizontal Cross Arm Wig-Wag Vertical Lift Super C Motions Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 9 C-Arm Subsystem Major Assembly and Control Locations The following diagrams indicate the location of the major assemblies and controls of the standard C-Arm and the Super-C, or the covers by which they are accessed. Camera Cover Image Intensifier Control Panel Housing Vertical Column L-Rotation Assembly Collimator Cover...
Page 10 C-Arm Subsystem The following table lists the primary components of the standard C-Arm associated with the major assemblies shown in the previous diagram, for the purpose of indicating physical location. Location Major Assemblies Control Panel Housing Assembly Left and Right Hand Control Panels Control Panel Processor I/O PCB Control Processor Assembly Vacuum Fluorescent Display (VFD) Modules (2)
Page 11 C-Arm Subsystem Location Major Assemblies Rear Cover Assembly Mechanical linkage of rear steering system Battery Packs (2) C-arm Backplane PCB High Voltage Supply Regulator 486 X-ray Controller Assembly Fluoro Functions PCB Assembly Filament Driver PCB Assembly Generator Driver PCB Assembly High Voltage Tank IGBT/Snubber Assembly Power Supply, 24 VDC (PS 3)
Page 12 C-Arm Subsystem Camera Cover Control Panel Housing Image Intensifier L-Rotation Assembly Vertical Column Collimator Cover X-Ray Tube Cover Front Leg Cover Right Front Cover (Left Front Cover similar, not shown for clarity) Rear Cover Assembly Cross Beam End Cap Super-C Subsystem Major Assembly and Control Locations Contents Installation Service...
Page 13 C-Arm Subsystem The following table lists the primary components of the C-Arm, associated with the major assemblies shown in the previous diagram, for the purpose of indicating physical location. Location Major Assemblies Control Panel Housing Assembly Left and Right Hand Control Panels Control Panel Processor I/O PCB Control Processor Assembly Vacuum Fluorescent Display (VFD) Modules (2)
Page 14 C-Arm Subsystem Location Major Assemblies Rear Cover Assembly Mechanical linkage of rear steering system Battery Packs (2) C-arm Backplane PCB High Voltage Supply Regulator 486 X-ray Controller Assembly Fluoro Functions PCB Assembly Filament Driver PCB Assembly Generator Driver PCB Assembly High Voltage Tank IGBT/Snubber Assembly Power Supply, 24 VDC (PS 3)
Page 15 C-Arm Subsystem Subystem Functional Breakdown The operation of the C-Arm has been divided into the functional groups listed below. The functional group name corresponds to the applicable chapter tab in this manual, for easy access to the information indicated. • •...
Page 16 C-Arm Subsystem Turn on the Workstation. You should hear a click. The Workstation should boot without making any beeping sounds. Then turn it off. Plug the interconnect cable into the C-Arm and listen for a click from the internal electronics of the Workstation. This click signifies that the Workstation is properly connected to the C-Arm and the AC voltage from the wall receptacle is at the proper voltage.
Page 17 C-Arm Subsystem Connect the footswitch and hand control and while pressing a footswitch or hand switch X-ray switch. Verify operation of the following: Image orientation keys: rotation and image reversal. Field size selection keys: NORM, MAG1 and MAG2. Motorized collimation controls: leaf rotation, iris collimation, and leaves open and close. The MODE switch (vascular systems only).
Page 18 C-Arm Subsystem Engage the C-Arm Orbital brake and verify that the C-Arm does not move. Engage the Horizontal Cross-Arm brake and verify that the Cross-Arm does not move. Engage the L-Arm brake and verify that the L-Arm does not move. Engage the C-Arm wheel brake and then attempt to push the C-Arm.
Page 19 C-Arm Subsystem Position the C-arm parallel with the floor and lock the L-Arm brake. Rotate the C-arm through its entire range. The C-arm should rotate smoothly without vibration. Position the C-arm on the opposite side and lock the L-Arm brake. Rotate the C-arm through its entire range. The C-arm should rotate smoothly without vibration.
Page 20 C-Arm Subsystem Fault Isolation Boot Test If the C-Arm failed the Boot Test, use the following fault isolation chart: Problem Probable Cause or Remedy No click heard when Interconnect Workstation not plugged into wall receptacle; Receptacle not powered (fuse blown or circuit breaker tripped);...
Page 21 C-Arm Subsystem Problem Probable Cause or Remedy All squares and arrows did not Refer to Interlocks chapter of this manual. come on. Error message Refer to Bootup, in the Diagnostics chapter of this manual. appears. Fluoro Mode If the C-Arm failed the Fluoro Mode Performance Check, use the following fault isolation chart: Note: The sections listed below are suggested starting points for your troubleshooting.
Page 22 C-Arm Subsystem Film Mode If the C-Arm failed the Film Mode Performance Check, use the following fault isolation chart: Note: The sections listed below are suggested starting points for your troubleshooting. It is likely that you will need to review other sections also Problem Probable Cause or Remedy...
Page 23 AC Power Distribution AC Power Distribution Circuit/Mechanical Descriptions..............................2 AC Power to PS1 and PS2 ...............................2 AC Power to PS3..................................4 AC Power to the Battery Charger and Light ..........................5 AC Power to the Stator ................................5 Functional Tests....................................6 Fault Isolation....................................6 Adjustment .......................................8 Miscellaneous....................................8 Contents Installation...
Page 24 AC Power Distribution Circuit/Mechanical Descriptions For purposes of this description, assume the Workstation is connected to facility power correctly, and the Workstation and C-Arm are correctly connected via the Interconnect Cable. Before you turn on the Workstation power switch, 115VAC_PH is present at connector P5 of the C-Arm Power/Signal Interface PCB, and energizes the battery charger light and the battery charger.
Page 25 AC Power Distribution Workstation Interconnect Cables 115 VAC - PH - CH Battery Charger Charger Light 115 VAC - PH (DS2) 115 VAC - PH - IN 115 VAC - PH - SW "Key Power" Diagram 115 VAC - PH - MTR PS 3 See "Stator Power"...
Page 26 AC Power Distribution 115 VAC_PH_IN 115VAC_PH_SW (see "AC Power Distribution") FS_INTLK_B "Interlocks" Key Power TP 9 Workstation Interconnect Backplane Cable Power/Motor Relay PCB Key Power Distribution AC Power to PS3 AC power comes from K10 in the Power/Motor Relay PCB and goes into the Power/Signal Interface PCB as 115VAC_PH_SW, as described above.
Page 27 AC Power Distribution AC Power to the Battery Charger and Light With the Workstation either on or off, 115VAC_PH enters the Power Signal Interface PCB, flows through fuse F5, Line Filter LF1, and the inrush current limiter RT2, then leaves the PCB as 115VAC_PH_CH. This power then connects to the Battery Charger PCB.
Page 28 AC Power Distribution Functional Tests None Fault Isolation Use the following troubleshooting guide to eliminate the AC power components as failure candidates. Failure Possible Cause Remedy With Workstation off, battery Workstation power problem. Check that Workstation power and interconnect charger light is OFF. cables are plugged in.
Page 29 AC Power Distribution Failure Possible Cause Remedy Blown fuse F6 or F10 on Replace fuse. Power/Signal Interface PCB. DC power distribution problem. See DC Power Distribution section in this manual. Defective Relay K10 in See AC Power Distribution diagram in this chapter. Power/Motor Relay PCB Workstation boots but Power Signal Interface...
Page 30 AC Power Distribution Adjustment (None) Miscellaneous None Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 31 Overview Section 2 - Overview This section provides an introductory technical description of the OEC Workstation. It is organized as follows: References ...................................2-4 Major Functions ................................2-4 Major Components................................2-5 Mechanical Details................................2-6 Locking the Workstation Casters ..........................2-7 Workstation Moving Precautions ..........................2-8 Cover Removal.................................2-9 Host Controller................................2-14...
Page 32 Overview Image Subsystem ...............................2-25 Video Controller..............................2-26 Image Processor ..............................2-26 Display Adapter ..............................2-27 User Interfaces ................................2-27 Control Panel Processor............................2-28 Keyboard ................................2-29 Infrared Remote..............................2-30 Touch Screen .................................2-31 X-RAY ON Indicator ...............................2-32 Lighted ON/OFF Pushbutton ..........................2-33 External Interfaces ..............................2-34 External Interface PCB ............................2-34 Rear Panel Connectors ............................2-35 Power Distribution Subsystem ............................2-36 System Software.................................2-36...
Page 33 Overview Configurations................................2-43 Enhanced Surgical Platform ...........................2-43 Enhanced Surgical Platform -- Cine ........................2-44 Vascular..................................2-45 Neurovascular ................................2-45 Cardiac ...................................2-45 Options ..................................2-45 Cine Disk ................................2-45 Measurement Software ............................2-46 Infrared Remote..............................2-46 Video Cassette Recorder............................2-47 SCSI Devices .................................2-48 Hardcopy Camera ..............................2-49 Instant Film/Paper Printer ............................2-50 Laser Camera Interface ............................2-51 Thermal Printer...............................2-52 Contents...
Page 34 Refer to Workstation Interconnect Diagram 00-878981 as you read this section. Major Functions The OEC Workstation provides most of the user interfaces and all of the external data interfaces in an OEC mobile digital imaging system. It also performs the system’s computing and image manipulation functions such as post processing and storage.
Page 35 Overview Rear Panel Connectors Monitors AC Line Cord Interconnect Cable WorkStation Components Major Components Major internal Workstation components include the Host Controller, Display Subsystem, Cine Disk Subsystem, Image Subsystem, User Interface, External Interface, and Power Distribution Subsystem. The following paragraphs first describe the mechanical characteristics of the Workstation, and then discuss each of the major components.
Page 36 Overview Mechanical Details The basic Workstation without any optional equipment weighs about 400 pounds (182 kg) and stands about 64 inches (163 cm) high. Its wheelbase is about 27.5 by 27.5 inches (70 by 70 cm). One person can safely move the Workstation over level flooring or carpet.
Page 37 Overview Locking the Workstation Casters The Workstation brake pedal has three positions: 1. The UP position locks two of the four Workstation casters facing straight ahead, making it easier to push the Workstation longer distances, such as down a hallway. 2.
Page 38 Overview Workstation Moving Precautions WARNING: Never move the Workstation up or down an incline of greater than 10 degrees. It may roll out of control. WARNING: Get another person to help you when moving the Workstation up or down an incline. It may roll out of control.
Page 39 Overview Cover Removal WARNING: Removing any Workstation cover exposes dangerous electrical voltages on several components. When possible, disconnect Workstation from AC line before removing any covers. When it is necessary to leave the power applied, use extreme care to avoid death or injury from electrical shock. Note: Set the brake before attempting to remove Workstation covers.
Page 40 Overview Rear Cover Removal Follow these steps to remove the rear cover: 1. Loosen eight quarter-turn fasteners that secure rear cover to Workstation chassis. 2. Move the bottom of rear cover outward a few inches, and then pull cover downward and outward. Rear Cover Removal 2-10 Contents...
Page 41 Overview Side Cover Removal Note: Rear cover must be removed before side covers or front cover can be removed Note: Left and right side covers fit into slots in Workstation base and under handles on either side of Workstation. Remove both side covers by pulling each of them to the rear of the Workstation. Do not remove these covers Side Covers...
Page 42 Overview Front Cover Removal Note: Rear cover and side covers must be removed before front cover can be removed 1. Using both hands, grasp front cover near bottom of cover. 2. Giving equal pressure with both hands, lift front cover upward to disengage two ball-nut fasteners on bottom edge of cover.
Page 43 Overview Monitor Cover Removal Note: Ball-nut fasteners hold bottom of monitor cover to front of monitor chassis. 1. Remove two torx screws at top of cover. 2. Grasp monitor cover with both hands. 2. Pull monitor cover away from Workstation to free ball-nut fasteners from front of monitor chassis. 2 Screws Monitor Cover Removal 2-13...
Page 44 Overview Host Controller The following is a basic description of Host Controller hardware. Refer to Section 4 - Host Controller for detailed circuit descriptions, troubleshooting information, and component replacement instructions. The Host Controller manages image acquisition, image processing, image display and annotation, image storage, and user communications.
Page 45 Overview Host Pentium CPU Motherboard Nearly all Workstation functions are software controlled. The software executes in a multi-processor environment in the Host Pentium CPU, which communicates over the ARCNet bus to control the other intelligent devices in the Workstation and in the X-ray generator. When the Workstation powers up, the Host Pentium CPU loads system or diagnostic software from a 1.44 Mb floppy disk mounted in the floppy disk drive located at the rear of the Workstation.
Page 46 Overview System Interface PCB The System Interface PCB resides in ISA bus slot 2 of the Host Pentium CPU motherboard. As its name implies, the System Interface PCB helps the Host Pentium Processor communicate with other system devices. Main features of the System Interface PCB include: •...
Page 47 The Workstation normally boots from the 50-megabyte non-DOS partition of this 4.3-Gigabyte drive, which contains the Nucleus® operating system and OEC application software. This drive also has a DOS-readable partition that is available to the user for image and data storage. The IDE hard disk drive is located in the bottom right-hand corner of the Electronics box.
Page 48 Overview Floppy Disk Drive The 3.5-Inch, 1.44-megabyte floppy disk drive, located on the Workstation rear panel at the rear of the Electronics box, serves as an alternate boot drive; it can also store single images on standard 3.5-inch floppy disks. 3.5-Inch, 1.44-Megabyte Floppy Disk Drive on Workstation Rear Panel 2-18 Contents...
Page 49 Overview Display Subsystem The following is a basic description of the Display Subsystem hardware. Refer to Section 5 - High Resolution Displays for detailed circuit descriptions, troubleshooting information, and component replacement instructions. The Display Subsystem consists of two 16-inch, high resolution, high contrast, high brightness, monochrome monitors. Each monitor can display up to 1030 lines per frame with 1320 pixels per line maximum.
Page 50 Overview The following illustration shows a rear view of the two Workstation monitors. Both monitors are electrically identical; each is powered by 120 VAC from TB4, and each receives its video drive signal from the Display Controller PCB. The System Interface PCB supplies control signals from the Host CPU to the monitors. These RS-232 signals control image contrast and brightness, and setup parameters such as vertical size and raster centering.
Page 51 Overview Cine Disk Subsystem The following is a basic description of the Cine Disk hardware. Refer to Section 6 - Cine Disk Subsystem for detailed circuit descriptions, troubleshooting information, and component replacement instructions. The optional Cine Disk Subsystem allows the Workstation to capture digitized X-Ray images from its Image Subsystem at 15 FPS or 30 FPS (12.5 and 25 FPS at 50 Hz).
Page 52 Overview Cine Disk Drives Cine 4-Disk Backplane Power Supply Cine Four-Disk Assembly (Covers Removed) 2-22 Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 53 Overview Cine Bridge PCB The main purpose of the Cine Bridge PCB is to generate another PCI bus (PCI Bus 1) that is separate but linked to the Host Pentium CPU’s PCI Bus (PCI Bus 0). Although the Host Pentium CPU maintains control of PCI Bus 1, it is actually a reserved, high-capacity data path between frame memory on the Cine Bridge PCB and the Cine Disk array.
Page 54 Overview Cine Disk Backplanes Each Cine Disk Backplane performs several functions: • Provides power to each disk drive • Provides looping input and output FC-AL fibre channel connectors • Provides loop resiliency circuits (LRCs) that detect whether drives are plugged in and route the FC-AL signal past missing or inoperative drives Cine Hard Disk Drives The Cine Disk drives are much like standard SCSI drives, except that they contain circuitry that unpacketizes incoming...
Page 55 Overview Image Subsystem The following is a basic description of the Image Subsystem hardware. Refer to Section 7 - Image Subsystem for detailed circuit descriptions, troubleshooting information, and component replacement instructions. The Image Subsystem processes video from the CCD camera to produce enhanced images for the Display system monitors and Cine Disk subsystem.
Page 56 Overview Video Controller The Video Controller accepts analog differential video and pilot tone (sync) signals from the CCD camera. The pilot tone signal contains sync, drive, and pixel clock data. The Video Controller converts the analog video signal to ten bits per pixel parallel data, which it sends to the Image Processor.
Page 57 Overview Display Adapter The Display Adapter PCB translates the 25 or 30 FPS 1024 x 1024 pixel images generated in the Image Processor to 60 or 75 FPS non-interlaced video for output to the high-resolution display monitors. The Display Adapter also converts the non-interlaced Image Processor video to standard resolution interlaced video that is compatible with PAL or NTSC video cassette recorders and monitors.
Page 58 Overview Control Panel Processor The Control Panel Processor (CPP) scans for key closures on the Keyboard and reports these closures to the System Interface PCB in the Host Controller subsystem for further processing. The CPP also responds to commands from the System Interface PCB to light Keyboard LEDs.
Page 59 Overview Keyboard The operator uses the keyboard to enter patient annotation information and control system operation. The keyboard has a standard QWERTY alphanumeric key array, plus several special-purpose keys. It is covered by a flexible membrane designed to resist liquids and other contaminants, and is replaceable (but not repairable) in the field. The keyboard PCB has no active circuitry;...
Page 60 Overview Infrared Remote The optional infrared (IR) remote system consists of a battery-operated, hand-held IR transmitter, and an IR receiver that mounts between the two Workstation monitors behind the bezel. You can use the hand-held transmitter up to 20 feet from the Workstation to access most system functions. When you press a button on the hand-held IR transmitter, the transmitter generates a pulsed waveform and converts it to invisible infrared light, much like a standard television remote control.
Page 61 Overview Touch Screen The Secondary system display (i.e., the right-hand monitor) is equipped with an array of infrared light-emitting diodes and a corresponding array of phototransistors that detects the presence and calculates the location of a finger touched to the CRT. You use this touch screen feature in conjunction with displayed software screens to make mode and function selections during Workstation operation.
Page 62 Overview X-RAY ON Indicator The X-RAY ON indicator lights at any time the system generates X-rays. Located on the top of the left-hand monitor, the indicator contains an array of six LEDs driven by a signal from the System Interface PCB. X-Ray On Indicator 2-32 Contents...
Page 63 Overview Lighted ON/OFF Pushbutton The lighted SPST ON/OFF pushbutton controls application of AC power to the Workstation. The switch’s 12-volt incandescent bulb lights when the Workstation is on. ON/OFF Pushbutton 2-33 Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 64 Overview External Interfaces This paragraph discusses the External Interface PCB and Workstation rear panel. Refer to Section 9 - External Interfaces for detailed circuit descriptions, troubleshooting information, and component replacement instructions. External Interface PCB The External Interface PCB connects via ribbon cable to the System Interface PCB, which connects to ISA slot 2 on the Host Pentium CPU motherboard located in the Electronics box.
Page 65 Overview Rear Panel Connectors The following illustration shows the Workstation rear panel connectors. Not all interfaces present on the Workstation rear panel pass through the External Interface PCB. For example, COM1 and LPT1 connect directly to the Host Pentium CPU, and the video signals come directly from the Display Controller. High-resolution NTSC or Video...
Page 66 Disk Drive. The Workstation Host Controller subsystem normally boots from this drive. OEC application software executes under the Nucleus® operating system. The OEC applications and operating system are both located in the non-DOS formatted 50 Mb portion of the hard drive.
Page 67 Overview Status and Error Codes If an error occurs during the boot-up process, an error message appears on the right-hand display. Refer to Section 10 - Software for a complete description of each status and error code. Run-time Error Reporting Errors that occur during Workstation operation generate a message on the right-hand display and cause the Workstation software to cease operation.
Page 68 Overview Touch Screen Graphical Interface Workstation software includes a comprehensive graphical user interface (GUI) that works with the Touch Screen hardware described above to allow you to select modes and features by touching a finger to the right-hand display screen. The Patient Information screen, shown below, appears automatically after a successful Workstation boot-up.
Page 69 This is a paper document supplied with the Workstation. Setup Utilities The Host CPU motherboard has flash ROM BIOS that is preconfigured by OEC at the factory for the specific equipment and options supplied with each Workstation. When you add or replace Workstation equipment, follow the instructions you receive from the factory to update the BIOS.
Page 70 Service Port The ARCNET connector on the Workstation rear panel is a secure serial port reserved for customer technical personnel or OEC Field Service Engineers. It is used to configure, test and calibrate both the Workstation and X-Ray generator. The service port uses a packet-based handshaking protocol to communicate with a remote computer. Usually the remote computer will be a laptop located a few feet away from the Workstation.
Page 71 Level Fluoro, Digital Spot, Subtract, Roadmap, and Film. Only basic descriptions of these modes will be given here. For a complete description of how to enter and use each mode, refer to the OEC Mobile Workstation Operator’s Guide. This is a paper manual that ships with the Workstation.
Page 72 Overview Subtract Subtraction produces images that are the difference between a fluoroscopic image obtained while contrast media is present in a vessel and a mask image of the same anatomy obtained just prior to the subtraction process before injection of the contrast media. The subtracted image appears on the left-hand monitor. Subtraction is ideal for visualizing vasculature.
Page 73 Overview Configurations The Workstation is available in five basic configurations: Enhanced Surgical Platform (ESP), Enhanced Surgical Platform - Cine, Vascular, Neurovascular, and Cardiac. Enhanced Surgical Platform The Enhanced Surgical Platform (ESP) is the basic Workstation configuration around which the other Workstation configurations are built.
Page 74 Overview • Entry of date and time • A VCR interface that allows images to be recorded to and played back from S-VHS cassette tape • Zoom in and roam a region of interest on recorded images. • Provide edge enhancement on LMON images •...
Page 75 The 30 PPS option is also available in the Cardiac Workstation. Options The following optional equipment is available for the OEC Workstation. Cine Disk The Digital Cine option offers high technique levels for imaging small vessels and other anatomy that is in constant movement.
Page 76 Overview Measurement Software This optional software feature allows a doctor to make linear or angular measurements of vessels, bones, and other anatomy. It is especially useful in orthopaedic and cardiac applications. For additional information the measurement software, refer to Section 10 - Software Infrared Remote The optional handheld infrared remote control is described and illustrated under USER INTERFACES, which appears earlier in this section.
Page 77 Overview Video Cassette Recorder The VCR option includes a remotely-controlled, half-inch S-VHS tape machine and the power, control, and signal cables necessary to install the VCR in the Workstation. The VCR accepts down-scanned video from the Display Controller PCB in NTSC (RS-170) or PAL (CCIR) format. Although the VCR cannot record 1kx1k high resolution images, it offers much greater image storage capacity than a cine disk (two hours or more compared to five minutes maximum).
Page 78 Overview SCSI Devices The SCSI Controller PCB described previously in the HOST CONTROLLER paragraphs supports several optional devices, such as a removable media hard disk drive. The SCSI controller can support up to seven SCSI devices. Removable Dynamic Digital Disk The removable disk drive, located on the Workstation rear panel, is supplied as a standard feature on Cardiac Workstations, and is available as an option on others.
Page 79 Overview Hardcopy Camera The hardcopy camera prints archived images on standard 8 x 10 inch X-Ray sheet film. It accepts IEEE 1284 compliant digital video from the Display Controller on a 25-pin D-type connector. It prints one or two images on each film sheet under program control.
Page 80 Overview Instant Film/Paper Printer The Instant Film/Paper Printer is a hardcopy output device that prints archived images on paper or transparency film at 300 dpi. The printer outputs 256 levels of grey. The printer accepts Centronics-compatible data from the Display controller on a 36-pin connector, and operates under program or front panel control.
Page 81 Overview Laser Camera Interface The laser camera interface is an 8-bit ISA PCB that mounts in ISA slot 3 of the Host Pentium CPU motherboard. Under program control, this PCB transmits digital archived images over a 37-pin D-type connector to a remote laser imaging camera connected to the Workstation rear panel.
Page 82 Overview Thermal Printer The thermal printer is a hardcopy device that accepts composite video (RS-170 or CCIR) from the Display Controller PCB to produce grayscale images on heat-sensitive paper. Image resolution is typically 256 scales of gray, with 1280 dots per line. The thermal printer requires manual control from a footswitch, remote control unit, or front panel controls.
Page 83 DC Power Distribution DC Power Distribution Circuit/Mechanical Descriptions..............................2 PS1 Output....................................2 +5VDC Output ..................................2 +12VDC Output ..................................6 ±15VDC Output ..................................7 PS2 Output....................................8 PS3 Output....................................10 Functional Tests.....................................11 Fault Isolation....................................12 Adjustment .....................................13 Miscellaneous....................................13 Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 84 DC Power Distribution Circuit/Mechanical Descriptions This section applies to the outputs of PS1, PS2, and PS3 power supplies. When you turn on the Workstation, AC operating power and KEY POWER control power combine to energize these power supplies. PS1 Output The J1 connector outputs of PS1 are 3 lines of +5VDC, 1 line of+12VDC, 1 line of –15VDC, and 1 line of +15VDC, as shown in the following subsections.
Page 85 DC Power Distribution TP13 Spare Unused Spare Hand Switch Power/Motor Relay PCB To +5 Output Sheet 2 PS1 +5VDC Output (sheet 1 of 3) Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 86 DC Power Distribution Control Panel Processor I/O PCB See +5 Output Sheet 3 From +5 Output Sheet 1 Backplane TP25 Power/Signal Interface PCB Generator Driver PCB PS1 +5VDC Output (sheet 2 of 3) Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 87 DC Power Distribution Control Panel Processor PCB +5V CPP +5V CPP Left Control Panel (Key/Display) Alarm +5V Alarm +5V Alarm +5V Alarm Alarm +5V Alarm +5V Right Control Panel (Key/Display) Control Panel Processor I/O PCB PS1 +5VDC Output (sheet 3 of 3) Contents Installation Service...
Page 88 DC Power Distribution +12VDC Output For an illustration of the PS1 +12VDC output, refer to the following diagram: TP16 Voltage A3J1 Camera Dropping COOLER_SPLY Cooler Resistor Power Array Fluoro Functions PCB Backplane TP14 +12V IGBT Fan (No Connection) X-Ray Tube Cooling Power/Motor Relay PCB No Connect...
Page 89 DC Power Distribution ±15VDC Output For an illustration of the PS1 ±15VDC output, refer to the following diagram: -12V -15 VDC Power +15 VDC POS_12V POS_12V Conditioning -15 VDC TP20 +12V Generator Driver PCB Filament Driver PCB +15 VDC +15 VDC +15 VDC -15 VDC Backplane...
Page 90 DC Power Distribution The +15VDC and –15 VDC lines exit the board at P11, going to the Backplane. The +15VDC provides operating power. Both are provided through edge connector hookup to the three PCBs that reside on the Backplane. PS2 Output Power Supply PS2 provides operating power for the CCD camera, Image Intensifier power supply, and the Interlocks.
Page 91 DC Power Distribution +6.0V +6.0V +6.0V +6.0V -6.0V -6.0V 115 VAC-PH-PS2 (See AC -6.0V -6.0V Power Distribution) +14V +14V -14V -14V CCD Camera +24V Camera Cover Power/Signal Interface PCB See "Interlock" Power/Motor Relay PCB Power Supply PS2 Outputs Contents Installation Service Schematics Periodic Maintenance...
Page 92 DC Power Distribution The operating power for the Interlock system and the Image Intensifier power supply is further divided as shown in the next diagram. 24V_IN Power Supply 24V_INTERLOCK II_ON (see "Image Intensifier and Power Supply") See "Interlocks" Section Power/Motor Relay PCB DC Operating Power for CCD Camera and Image Intensifier In the Power/Signal Interface PCB, the +24VDC is divided into two separate circuits.
Page 93 DC Power Distribution Functional Tests To functionally test the DC Power Distribution function, perform the following applicable tests PS 1 Testing A. A short or overload on any PS1 output causes that output to drop. Look for obvious problems like shorted or loose connections on P1 and P2.
Page 94 DC Power Distribution Fault Isolation Failure Possible Cause Remedy Hand Switch indicator lights off; Blown fuse F7 on Power/Motor Replace fuse. VFDs OK; bootup OK Relay PCB Loose connectors Check Connectors P8 and P9 on Power/Motor Relay PCB. Also check Hand Switch connector J3/P3.
Page 95 DC Power Distribution Failure Possible Cause Remedy Check connector P7 on the Power/Signal Interface PCB + or –6VDC section of PS2 failed Check test points and indicator lights. No video, but pilot tone OK Blown fuses F15 or F16 Replace fuses Check connector P7 on the Power/Signal Interface PCB + or –14VDC sections of PS@ failed Replace PS2...
Page 96 DC Power Distribution Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 97 Battery Charging Battery Charging Circuit/Mechanical Descriptions..............................2 Functional Tests....................................3 Fault Isolation....................................4 Adjustment .......................................5 Miscellaneous....................................5 Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 98 Battery Charging Circuit/Mechanical Descriptions The battery charging circuitry is illustrated in the following diagram: 115VAC_PH_CH (see AC Power Distribution) Capacitor/ Power CHRG_OUT A2J1 Module LINE_V_SEN Analog to Digital CHG_I_SEN Conversion ARCNET_HI Battery Charger Processor ARCNET_LO CHG_DISAB Output Latching HI_CHG_MOD Battery Charger X-Ray Controller PCB Battery Charging Circuitry...
Page 99 Battery Charging Charger output goes to the battery via the Capacitor/Power Module. The following information about charger operation is not visible in the diagram above, however you should be familiar with how the charger itself operates. • The charger has three modes of operation: high charge, normal charge, and trickle charge. •...
Page 100 Battery Charging Fault Isolation Failure Possible Cause Remedy Battery charger inoperative The Workstation disconnected from AC line Check AC connections to Workstation or the AC line goes down. The Workstation Interconnect Cable Check Interconnect Cable disconnected from the C-Arm. A fuse blows or the Battery Charger fails. Replace fuses (see AC and DC power chapters of this manual.
Page 101 Battery Charging Adjustment Battery charger output voltage under normal charging operation should be adjusted to produce 225.0V at TP1 relative to TP3 using R71. TP3 is not installed. Use meter probe to connect to the exposed hole at this location. The trimpot R71 turns counterclockwise to increase, or clockwise to reduce the output voltage.
Page 102 Battery Charging Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 103 System Communications System Communications ARCNET Communications ................................2 Fluoro Functions PCB ARCNet Node ............................2 Generator Node.....................................3 Frame Sync Circuitry..................................3 Camera - Control Panel Communication (RS422) ........................3 Functional Tests....................................4 Fault Isolation....................................5 ARCNet Waveforms ..................................5 RS422 Serial Communication Failure ............................6 Adjustment .......................................6 Miscellaneous....................................6 Contents Installation Service...
Page 104 System Communications ARCNET Communications Communications within the system between the four system microprocessors is by means of ARCNet, generated by a Universal Local Area Network Controller. The term “node” refers to each microprocessor and its associated support hardware. The ARCNet chip interfaces to other nodes by means of RS485 transceivers. The RS485 standard allows receivers and transmitters to be connected on a single pair of wire for transmitted and received data.
Page 105 System Communications Generator Node The Generator Node on the X-Ray Controller PCB controls the electrical components that determine x-ray technique, pulse rates, etc. Technique and shot data gathered by the X-Ray Controller PCB during and after the exposure are sent to the Workstation Node for display on the monitors as well as being sent to the Fluoro Functions PCB Node for display on the X-Ray Control Panel.
Page 106 System Communications The Fluoro Functions PCB responds to this input by sending data back from RS422 driver U58 through the interconnection cable to RS422 receiver U4 on the Control Panel Processor PCB and Microcontroller U11. Functional Tests None Contents Installation Service Schematics Periodic Maintenance...
Page 107 System Communications Fault Isolation ARCNet Waveforms The ARCNet is the primary control path in the Series 9800 Mobile Digital Imaging system. There are two nodes in the C-Arm: 1. The Fluoro Functions PCB. 2. The X-Ray Controller PCB. The System Interface PCB, which occupies an ISA slot on the Host CPU motherboard in the Workstation, has two independent ARCNet nodes: 3.
Page 108 System Communications RS422 Serial Communication Failure Check PCB seating and cabling. Check the test points for the correct voltage levels. Adjustment None Miscellaneous None Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 109 Interlocks Interlocks Circuit/Mechanical Descriptions..............................2 Functional Tests....................................4 Fault Isolation....................................5 Adjustment .......................................5 Miscellaneous....................................6 Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 110 Interlocks Circuit/Mechanical Descriptions The Interlock system for the 9800 Imaging System consists of circuitry that connects each of the PCBs that are used in generating X-rays. If any of these circuits are broken, the system is prevented from emitting X-rays until the fault is repaired. The interlock loop can be broken by pressing the Fast-Stop buttons, by a wire/connection break, or by software via the X-Ray Controller CPU_Interlock signal.
Page 111 Interlocks Power/Motor FILDVR PWR/SIG 24V INTLK Relay PCB INTLK INTF F11 3.15A 24 VDC To Fast Stop INTLK FS_LINK Switches COMPL Bckpln Fast Stop INTLK Cont Fluoro Battery Functions Packs Field Size 24V_INTERLOCK Relays Pre- Charge CPU_INTLK HVSR GEN DVR X-Ray High INTLK COMPL...
Page 112 Interlocks Functional Tests Perform the following tests to verify that the system is operating satisfactorily. (Refer to the 9800 C-Arm Sub-system chapter of this manual for Functional Tests.) 1. System Boot 2. Make a fluoroscopic exposure 3. Press one of the Fast Stop buttons on the C-arm Control Panel. The message “FAST STOP ACTIVATED. POWER DOWN.
Page 113 Interlocks Fault Isolation Failure Possible Cause Remedy Interlocks broken Interlock path is open Check interlock path for open circuit. Check cables and connectors System does not boot – stops at System Interlocks open Check interlock path for arrow on Control Panel open circuit.
Page 114 Interlocks Miscellaneous None Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 115 Stator Power and Control Stator Power and Control Circuit/Mechanical Descriptions..............................2 Stator Power and Control ................................2 Filament Selection..................................4 Functional Tests....................................4 Fault Isolation....................................5 Adjustment .......................................6 Miscellaneous....................................6 Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 116 Stator Power and Control Circuit/Mechanical Descriptions Stator Power and Control An overview of the Stator Power and Control function is shown in the following: 115 VAC_PH_MTR Stator_Cap_1 Stator_Cap_2 T3 Stator Stator_Start ARCNET_HI Xfrmr_40 VAC Transformer (see Sheet 4) X-Ray Power/Motor Stator_Run ARCNET_LO Xfrmr_115 VAC...
Page 117 Stator Power and Control The major components of this functional group consist of X-Ray Controller PCB, Power/Motor Relay PCB, T3 Stator Transformer, and X-Ray Tube. Operation of this group begins when you place the ON/OFF switch on the Workstation in the ON position, starting the boot sequence.
Page 118 Stator Power and Control After about 10 minutes of idle time, the system enters “sleep” mode, and the stator drive is turned off. When reactivated, Steps a and b above are repeated before X-Rays can be made. You should be able to hear the anode whirring, and the successions of relay clicks, indicating that the system came out of sleep mode.
Page 119 Stator Power and Control Fault Isolation Failure Possible Cause Remedy Stator does not start during Stator Start signal fails to Check relay on Power Motor Relay PCB (K2). Check boot-up. STATOR NOT ON activate relay connections to this relay. LED across relay should light error message when activated.
Page 120 Stator Power and Control Adjustment None Miscellaneous Stator Transformer T3 also supplies the precharge circuitry on the Filament Driver PCB. Precharge is initiated after the stator start-run sequence has been completed. See the Precharge chapter of this manual. Contents Installation Service Schematics Periodic Maintenance...
Page 121 Pre-Charging Pre-Charging Circuit/Mechanical Descriptions..............................2 Functional Tests....................................6 Fault Isolation....................................7 Adjustment .......................................7 Miscellaneous....................................7 Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 122 Pre-Charging Circuit/Mechanical Descriptions An explanation of the Pre-charging function is shown in the following diagrams, sheets 1 through 4: Power/ 24V_INTERLOCK Motor Relay PRE_CHRG* CONTACT* AC_CAP X-Ray Controller Generator T3 Stator INV_B_SEN_DIV AC_CAP_RTN INV_B_SEN 40/115 VAC Filament Driver Transformer Driver (see "Stator Power &...
Page 123 Pre-Charging CHG_OUT CAP_POS CAP_POS_F2 (see Sheet 1) Resistor R_DIS Bank Reservoir Capacitor 24V_INTERLOCK CONTACT_RLY* BAT_POS_F4 CB1A CB1B CAP_NEG Capacitor/Power Module Battery Packs Pre-charging (Sheet 2) Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 124 Pre-Charging Contact Lock CAP_POS_F2 CAP_POS_F2 AC_CAP Charge (from Sheet 2) Pump Sheet 4 Filament Regulation, Sheet 4 Drive and 24V_INTERLOCK Selection Circuits (see "mA Generation") Sheet 4 CR23 PRE_CHRG* CR22 CONTACT_RLY* CONTACT* Voltage Sense Relay K2 Sheet 4 CAP_NEG (Gnd) (from Sheet 4) R_DIS R_DIS...
Page 125 Pre-Charging CAP_NEG Resistor K1, K3 Sheet 3 Network R_DIS Sheet 3 Sheet 3 AC_CAP_RTN (Stator Transformer) 24V_INTERLOCK Sheet 3 PRE_CHRG* CAP_NEG (Gnd) 24V_INTERLOCK Sheet 3 Over Voltage Protection CAP_POS_F2 P/O Filament Driver PCB Pre-charging (sheet 4) The PRE-CHRG* signal from the X-Ray Controller PCB turns on relays K1/K3 on the Filament Driver PCB, opening a path of 115VAC output from the secondary of the stator transformer to the Filament Driver PCB.
Page 126 Pre-Charging If the voltage on the pre-charging capacitors reaches about 280V, a relay on the Filament Driver PCB will operate, disconnecting the pre-charge relays, and forcing the voltage to cycle between 280V and about 180V. Eventually, software will fail to boot fully, and the operator will restart the system or call for service.
Page 127 Pre-Charging Fault Isolation Failure Possible Cause Remedy System does not complete pre- CB1 under the C-Arm is not Verify that CB1 is turned on. If not, turn it on. If it charging, PRECHARGE VOLTAGE closed. trips, call service technician. ERROR is displayed F4 in Cap/Power Module is open.
Page 128 Pre-Charging Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 129 X-ray On, X-ray Disable X-Ray On, X-Ray Disable Circuit/Mechanical Descriptions..............................2 Functional Tests....................................5 Fault Isolation....................................6 Adjustments .....................................7 Miscellaneous....................................7 Signal Names and Functions ................................7 X-Ray Controller PCB 00-879625.............................7 Digital Logic Signal Levels................................9 Standard Interface Analog Signal Levels..........................12 Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 130 X-ray On, X-ray Disable Circuit/Mechanical Descriptions The X-ray On Switch located on top of the Cross Arm cover sends an enable signal through the Power/Signal Interface PCB to the X-ray Controller PCB to initiate an x-ray exposure. The X-ray Lamp lights when an exposure occurs. The X-ray Controller PCB is the interface for the Generator subsystem to the ARCNET for control of X-ray generation and also enables the status display on the C-Arm Control Panels and Workstation monitors.
Page 131 X-ray On, X-ray Disable Xray Lamp + 5V Xray Lamp Xray Enable Xray Switch Xray On Power/Signal Security Interface PCB Process S3- A,B I-Source FS-Motor A/B FS-INTLK Loop FS-Motor Loop Footswitch Handswitch Xray Controller PCB Faststop Backplane To Power/Signal Switches Interface Board X-Ray On, X-Ray Disable The Generator does not receive drive signals unless both X-ray Enable and X-ray ON are asserted.
Page 132 X-ray On, X-ray Disable X-Ray On Switch Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 133 X-ray On, X-ray Disable Fast Stop Switches Functional Tests Perform the following tests to verify that the system is operating satisfactorily. (Refer to the 9800 C-Arm Sub-system chapter of this manual for Functional Tests.) 1. System Boot 2. Make a fluoroscopic exposure. 3.
Page 134 X-ray On, X-ray Disable Fault Isolation Failure Possible Cause Remedy X-ray Switch Bad switch Make a fluoro exposure using the Handswitch or Footswitch. If system does not perform properly, Check the X-ray switch. Check Operation of Control Panel. Follow X- ray signal on Schematics.
Page 135 X-ray On, X-ray Disable Adjustments None. Miscellaneous Signal Names and Functions X-Ray Controller PCB 00-879625 CHG_DISAB* Input to Battery Charger, active low, CHGDISAB on Battery Charger PCB schematic, CHG_DISAB on Interconnect Diagram. CHG_I_SEN Analog output from Battery Charger, called CHGISEN. HI_CHG_MOD Input to Battery Charger, HICHGMOD.
Page 136 X-ray On, X-ray Disable SHUTDOWN Logic level signal active high, disables generator ANALOG_RTN Analog direct ground return path for FIL_ERROR etc. FIL_DRV_A* Active low filament optocoupler drive signal (will be active high) FIL_DRV_B* Active low filament optocoupler drive signal (will be active high) FIL_SELECT Logic level selects large filament when high, small when low.
Page 137 X-ray On, X-ray Disable Digital Logic Signal Levels Logic signals that are connected from one PCB assembly to another, for example, will assume TTL logic levels, i.e., logical low is ≤0.8V, and logical high is ≥2.0V (in most cases, ≥4.0V.) Critical logic signals will be transmitted from one board to another using a pull-up resistor on the destination board, and typically none on the originating board, and will be so configured that in the event of an open-circuited connection, the high state input at the destination board will result in a safe condition, e.g., if the FAULT signal originating on the Generator Driver PCB is active...
Page 138 X-ray On, X-ray Disable Signame Source Destinatio Activ Pull- Effect of open fault XRAY_ON* XR Ctrlr HV Sup PWM chip disabled Gen Drvr Stops fault sensing XRAY_ENABLE* XR Ctrlr HV Sup Forces KVP_PULSE low Gen Drvr Disables kVp drivers SHUTDOWN XR Ctrlr HV Sup Disables...
Page 139 X-ray On, X-ray Disable Signame Source Destinatio Activ Pull- Effect of open fault XR Ctrlr Software input FAULT Gen Drvr HV Sup Disables KVP_DRV_RTN Gen Drvr Disables kVp drivers OVER_KVP_FAU Gen Drvr XR Ctrlr Software input GND_INTEG* Fil/Gen HV Sup Disables Drvr KVP_DRV_RTN...
Page 140 X-ray On, X-ray Disable Signame Source Destinatio Activ Pull- Effect of open fault FAST_RAMP* XR Ctrlr HV Sup Cant select this speed MA_HIGH* HV Sup XR Ctrlr False ind. of high mA MOD_READY HV Sup XR Ctrlr Can’t check modulator stat Standard Interface Analog Signal Levels In most cases, analog signals will be transmitted and received differentially, using the following standard interface, as shown in...
Page 141 kV Generation kV Generation Circuit/Mechanical Descriptions..............................2 Functional Tests....................................6 Fault Isolation....................................6 Adjustments .....................................8 kVp Accuracy....................................8 Miscellaneous....................................9 Signal Names and Functions ..............................13 X-Ray Controller PCB................................13 High Voltage Supply Regulator...............................13 Generator Driver PCB................................14 IGBT/Snubber Assembly ................................15 Capacitor/Power Module ................................15 Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 142 kV Generation Circuit/Mechanical Descriptions The kV generation and control for the system is accomplished on four PCB cards and the High Voltage Tank. The kV value is sensed in the tank and fed back to the HV Regulator PCB to modify and stabilize the drive to the section. The battery bank supplies the high current needed by the tank to generate the high voltage for the X-ray tube anode.
Page 143 kV Generation K2 Relay KVP Cntl KVP Cntl Xray On KVP Drv A Top KVP Drv A Top Xray Enable KVP Drv A Btm KVP Drv A Btm IGBTs HF Sync (120Khz) Battery KVP Drv B Top KVP Drv B Top Packs KVP Drv B Btm KVP Drv B Btm...
Page 144 kV Generation X-ray High Voltage Controller Supply Regulator X-Ray Controller PCB Location High Voltage Supply Regulator PCB Location Generator Driver IGBT Snubber Generator Driver PCB Location IGBT Snubber Location PCB locations Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 145 kV Generation Additional circuitry in the HV Tank allows the Filament Driver and Generator Driver to sense the flux in the HV Transformer and confirm that the generator is on (HV_GEN_ON*.) Another circuit confirms that the flux is generating the right kV level (FLUX_SEN) so that possible faults can be detected, including overvoltage (OVER_KVP_FAULT).
Page 146 kV Generation Functional Tests Make a Fluoro exposure and observe the kV readout on the control panel. The readout should remain steady on the desired kV technique. Perform the following tests to verify that the system is operating satisfactorily. (Refer to the 9800 C-Arm Sub-system chapter of this manual for Functional Tests.) 1.
Page 147 kV Generation Failure Possible Cause Remedy No Image and kV tracks to Anything in the kV Check the FLUX_SEN on the Generator Driver or X-Ray 120. generation circuit or Image Controller to see if the flux is unstable and varying from the path.
Page 148 kV Generation Adjustments For details of these adjustments, refer to the Calibration chapter in this manual. Stability Adjustment, HV Supply Regulator PCB, TP48, Pot R83. Dead Time Adjustments, HV Supply Regulator PCB, TP70-71, 41-46, Pots R137, R84. If the condition of the dead time adjustment is not known, turn pots 10 turns clockwise to the safe position.
Page 149 kV Generation Miscellaneous WARNING: High Voltage Hazard: Be sure to short the capacitors of the Capacitor/Power Module to ground through a current-limiting resistance before testing either the capacitors or bleeder resistors. Snubber PCB Fuse F1 (70A @ 250 V) is located under the Snubber PCB. The whole assembly should be replaced, not just the fuse.
Page 150 kV Generation Location of IGBT PCB Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 151 kV Generation IGBT PCB Removed for Clarity A bank of three 6800uF, 300V capacitors (C8-C10) are located in the Capacitor/Power Module. They supply large amounts of current for short periods. These capacitors are connected to four 1K, 25-watt resistors in parallel to bleed dangerous voltages from the high-energy capacitors when the system is shut down because of a fault.
Page 152 kV Generation Cap/Power Module Cap/Power Module Location Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 153 kV Generation Signal Names and Functions X-Ray Controller PCB (See X-Ray On, X-ray Disable section.) High Voltage Supply Regulator KVP_SEN Analog signal represents kVp output from tank voltage divider. KVP_SEN_REF Ground reference for above through resistor. HF_SYNC 120kHz squarewave to synchronize PWM oscillator, via B/P V_SLOW_RAMP Ramp control signal, via backplane.
Page 154 kV Generation 24V_INTERLOCK Positive 24V from Power/Motor Relay PCB A4P7/J7 to Power/Signal Interface PCB A11J8/P8 and from A11P3/J3 to Battery Charger PCB A22J2/P2, then from A22P3/J3 to Backplane A1J4/P4, thence to HV Supply Regulator PCB A1A1. Also from A11P10/J10 to Generator Driver PCB A2J2/P2 and from A2P5/J5 to Filament Driver PCB A21J1/P1.
Page 155 kV Generation IGBT/Snubber Assembly CAP_POS Capacitor C8 positive via wire and ferrite bead to upper collectors of IGBT’s. CAP_NEG Lower emitters of Q1, Q2 via wire and ferrite bead to ground at C8. Q1G1 Upper gate of Q1 to Generator Driver PCB at A2J3/P3. Q1E1 Upper emitter of Q1 to Generator Driver PCB at A2J3/P3.
Page 156 kV Generation Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 157 mA Generation mA Generation Circuit/Mechanical Descriptions..............................2 Functional Tests....................................4 X-ray Tube.....................................4 High Voltage Tank..................................4 mA Accuracy ....................................4 Filament Test....................................5 Fault Isolation....................................6 X-ray Tube.....................................6 High Voltage Tank..................................6 mA Generation ....................................8 Adjustments ....................................13 Miscellaneous....................................13 Signal Names and Functions ..............................13 Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 158 mA Generation Circuit/Mechanical Descriptions mA generation and regulation is accomplished with four printed circuit cards, with feedback from the High Voltage Tank. Prior to X-ray generation, the initial technique is setup, i.e., filament, select, kV, and mA. The correct filament selection is output to a relay on the Filament Driver PCB, and the correct FILAMENT SUPPLY voltage set up.
Page 159 mA Generation ANODE FILDRA FILDRA K4 Relay CATHODE (To X-ray tube) FILDRB FILDRB Large Filament Large Filament Fil_Select Fil_Select Small Filament Small Filament Fil B Cntrl Fil_B_Sens FILDRA Fil_Error Fil_B_Sens_Ref FILDRB LO_MA_SEN_NEG Fil_Drv_Ret Fil Reg Base Fil_Select HI_MA_SEN_NEG Fil_B_Sens_Ref Fil_Drv_OK* Fil_B_Sen_DIV HI_MA_SEN_POS Fil Reg Base...
Page 160 mA Generation The Generator Driver PCB monitors both the filament voltage and filament current from voltages present on the Filament Driver PCB. The. filament selection relay generates another signal to the Generator Driver PCB to control the gain of the measurement circuits, because the two filament transformer ratios are different.
Page 161 mA Generation Note: These tests may heat the X-ray tube up. Observe all temperature warnings and allow to cool when necessary to avoid damage to the X-ray tube. Dangerous voltages are present when covers are removed from the C-Arm. These WARNING: tests generate X-rays.
Page 162 mA Generation Fault Isolation This section provides troubleshooting information about the X-ray Tube, High Voltage Tank, and mA generation. X-ray Tube Failure Possible Cause Remedy System shuts down with no Inappropriate activation of Troubleshoot cooling function (see Cooling chapter in this error messages thermal switch manual).
Page 163 mA Generation Failure Possible Cause Remedy X-Ray Tube Overuse of X-ray The stator voltage is defined by the transformer as 40V and current is sensed by overheats - generation, STATOR_SEN, which software determines to be in the correct range. It is possible to Sensor failure of anode sense a stalled rotor.
Page 164 mA Generation mA Generation Failure Possible Cause Remedy Filament drive With either filament drive A detection circuit on the Generator Driver PCB looks for the presence of filament pulses absent pulse absent, the Filament current above that in sleep mode. If either or both pulses are missing, there’s no Driver PCB produces no filament current and the signal FIL_DRV_OK* goes high, indicating this condition drive and the X-ray tube...
Page 165 mA Generation Failure Possible Cause Remedy No filament Filament voltage at Filament voltage is monitored by a sensing circuit on the Generator Driver PCB, voltage FIL_VOLT on Generator and sends an analog signal to the X-Ray Controller PCB. This signal verifies that Driver PCB is zero.
Page 166 mA Generation Failure Possible Cause Remedy Wrong Filament current may be Filament voltage is monitored by a true rms sensing circuit on the Generator filament wrong, so mA generated Driver PCB which sends an analog signal to the X-Ray Controller PCB. This voltage will be wrong.
Page 167 mA Generation Failure Possible Cause Remedy Wrong If filament current is wrong, Filament current is monitored by a true rms sensing circuit on the Generator filament mA generated may be Driver PCB. The circuit sends an analog signal FIL_CUR to the X-Ray Controller current wrong.
Page 168 mA Generation Failure Possible Cause Remedy Wrong Filament voltage and No mitigation on the Generator Driver PCB. The signal passes through to the filament current will be wrong. Filament Driver PCB. Absence of this signal usually results in a safe condition, as Disconnection of the filament selection relay is in the relaxed position, selecting the small filament.
Page 169 mA Generation Adjustments High Voltage Regulator PCB, Offset, Pot R126, TP42-40; Offset, R138, TP43-39; Differentiator, R63, TP31. For details, refer to the Calibration section of this manual. Miscellaneous Signal Names and Functions HVPRI1 C1 to HV tank primary terminal E1. HVPRI2 C2 to HV tank primary terminal E2.
Page 170 mA Generation Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 171 Automatic Brightness Stabilization Automatic Brightness Stabilization Circuit/Mechanical Descriptions..............................2 Functional Tests....................................4 Fault Isolation....................................5 Adjustments .....................................6 Miscellaneous....................................6 Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 172 Automatic Brightness Stabilization Circuit/Mechanical Descriptions The Auto Brightness Stabilization circuitry adjusts the x-ray exposure parameters and camera gain to optimize the image while managing exposure rates to the subject. The control signals are applied to the CCD camera and generator kVP and mA. The AUTO key on the Workstation keyboard turns the function on.
Page 173 Automatic Brightness Stabilization ARCNET kVp / mA Interconnet Cable X-Ray Controller System I/F CCD Camera HV Supply Regulator Video Controller Host Camera Gain Pentium Computer Workstation Fluoro Function CAM_COMM+ C-Arm Backplane ABS Path Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 174 Automatic Brightness Stabilization Functional Tests Perform the following tests to verify that the system is operating satisfactorily. (Refer to the 9800 C-Arm Sub-system chapter of this manual for Functional Tests.) 1. System Boot 2. Make a fluoroscopic exposure. WARNING: The following procedure generates live x-rays. Take appropriate precautions against undue exposure.
Page 175 Automatic Brightness Stabilization Fault Isolation WARNING: The following procedures generate live x-rays. Take appropriate precautions against undue exposure. Failure Possible Cause Remedy Black image – Loss of video to Image Processor. (Camera, Replace failed component or assembly. Technique servos to Intensifier, Video Cables, Video Control PCB).
Page 176 Automatic Brightness Stabilization Failure Possible Cause Remedy Imaging Parameters may be corrupt. Check Imaging Defaults (histo min & max) and check TV monitor calibration. Kvp values too high or Incorrect CCD camera lens iris stop calibration. Perform Lens Iris Stop calibration (see too low in “copper filter Calibration chapter in this manual).
Page 177 Collimator Collimator Circuit/Mechanical Descriptions..............................2 Functional Tests....................................3 Fault Isolation....................................3 Adjustments .....................................4 Miscellaneous....................................5 Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 178 Collimator Circuit/Mechanical Descriptions The collimator is an electrically actuated mechanism that restricts the x-ray beam to allow the exposure area to only be the size and shape desired by the operator. The unit has a lead iris and shutters and is mounted directly over the x-ray tube beam aperture.
Page 179 Collimator Functional Tests The testing for correct collimation is part of the test procedures in the C-Arm Subsystem chapter of this manual. If the correct response to the collimation controls does not occur, you will receive error messages. If no error messages occur, yet the correct response fails to occur, follow the fault isolation procedures of the following section.
Page 180 Collimator Adjustments Shutter Leaves Motor And Pot Shutter Leaves Rotation Pot Iris Motor Iris Pot Iris Housing Shutter Leaves Rotation Motor Z Axis Adjust 3 Dovetailed Plates X Axis Adjust Collimator Components Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 181 Collimator Three dovetailed mechanical plates accomplish adjustment of the collimator to the image chain. The plates are adjusted in two planes (X-axis and Z-axis) as shown in the above illustration to align the unit with the image chain. Refer to the Calibration chapter of this manual for collimator calibration instructions. Miscellaneous Collimator Cover...
Page 182 Collimator Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 183 Image Control Image Control Circuit/Mechanical Descriptions..............................2 CCD Camera....................................2 Image Intensifier Tube and Power Supply ............................4 Functional Tests....................................5 CCD Camera....................................5 Image Intensifier and Power Supply..............................6 Fault Isolation....................................7 CCD Camera....................................7 Image Intensifier and Power Supply..............................8 Adjustments .....................................8 Miscellaneous....................................8 CCD Camera....................................8 Contents Installation Service Schematics Periodic Maintenance...
Page 184 Image Control Circuit/Mechanical Descriptions CCD Camera The CCD Camera used with the system has a macro-focusing lens and video circuits that pick up images from the output face of the image intensifier tube. The camera sends those images to the Video Controller PCB in the Workstation for processing and storage, along with display on the workstation monitors and possible storage on videotape.
Page 185 Image Control CArm Iris Mot ± Iris Motor CArm Iris Posn CArm Pots Ref ± CArm Rot Mot ± Prism Rotn Motor CArm Rot Posn CArm Pots Ref ± Cam Comm ± CCD Camera Cam Comm Sld Cooler Sply Cam Cooler Pwr Camera Cooler Cam Cooler Rtn Lenzar Optics...
Page 186 Image Control Image Intensifier Tube and Power Supply The Image Intensifier (II) Tube is a cathode ray tube mounted on the end of the C-weldment opposite the X-ray Tube. The II Tube and Power Supply are contained beneath the II cover. The CCD Camera is mounted on the bottom of the II assembly. The II tube receives the x-rays and produces a bright reduced-size image on its bottom phosphor glass plate.
Page 187 Image Control Image Intensifier Power Supply Functional Tests CCD Camera To verify correct operation of the CCD Camera, perform Boot Test and Fluoro Mode performance check in the C-Arm Subsystem chapter of this manual. Verify that the image quality is acceptable. Contents Installation Service...
Page 188 Image Control Image Intensifier and Power Supply Using copper filters, successively add filters onto the II surface. Observe the image and verify that the system compensates for each added filter, boosting the brightness and contrast of the monitor image as the filters are added. WARNING: The following procedure generates X-Rays.
Page 189 Image Control Fault Isolation CCD Camera Failure Possible Cause Remedy In Fluoro Mode: Control Panel Processor PCB Check Control Panel PCB Fluoro Functions PCB. See Check Fluoro Functions PCB Irregularities when Field Size changes Error Messages Collimator movements are jerky or sticky Collimator lubrication Lubricate the Collimator and retest for smooth movement...
Page 190 Image Control Image Intensifier and Power Supply Failure Possible Cause Remedy No Image on Monitor. Bad II or Power Supply, Bad Camera, Bad Monitor. Does kV track to 120? If yes check CCD Camera and output of II. Image out of Focus II Power Supply, II tube problems, CCD Camera Check if II and Camera can be focused.
Page 191 Image Control Camera Cover EMI Shield CCD Camera Image Intensifier CCD Camera Parts Locations The following table lists the test points available on the Fluoro Functions PCB, including those that affect the CCD Camera: Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 192 Image Control Test Description Test Description Point Point 5V_MOTOR_PWR -12VDC CPU DC VR1 OUT CPU RESET CAM_COMM+ 20 MHz CLOCK (ARCNET) CAM_COMM- ARC_INT (ARCNET) +12 vdc ARCNET_LO (ARCNET) POS_15V (Filtered) ARCNET_HI (ARCNET) Y1 ENABLE CPU_RD-WR VCC +5VDC Pin 68-Pin 33 Loop (ARCNET) 16 MHz CLOCK INT_FS 16 MHz CLOCK (U48)
Page 193 Cooling Cooling Circuit/Mechanical Descriptions..............................2 X-ray Tube Cooling ..................................2 CCD Camera Thermoelectric Cooling ............................4 Fault Isolation....................................5 Functional Tests....................................6 Adjustment .......................................6 Miscellaneous....................................6 Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 194 Cooling Circuit/Mechanical Descriptions There are two separate and unrelated cooling functions: for the X-ray tube, and for the CCD camera. X-ray Tube Cooling The X-ray Tube used on the 9800 C-Arm has a rotating anode and two filaments. In operation, the filaments and rotating anode generate heat as X-Rays are produced.
Page 195 Cooling Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 196 Cooling CCD Camera Thermoelectric Cooling A second source of generated heat is the CCD Camera. The CCD chip in the camera generates considerable heat as it helps create video from the visible light images on the Image Intensifier output phosphor. A themoelectric cooler (TEC) heat sinked to the back of the CCD chip helps keep the chip cool enough to perform in its linear region and avoid damage.
Page 197 Cooling Fault Isolation CCD Camera cooling failure can be indicated when the following occurs: • HOUSING OVERHEATED error message (see Diagnostics chapter). • The system shuts down without displaying an error message. If either of these has occurred, perform the cooling system functional test following. Contents Installation Service...
Page 198 Cooling Functional Tests To test the CCD Camera cooling function, proceed as follows: Verify power at the TEC. A. If no power available, go to Step 2. B. If power present, replace cooler assembly. Verify +5VDC at output of Fluoro Functions PCB A.
Page 199 Flip Flop Motion Flip Flop Motion Circuit/Mechanical Descriptions..............................2 Functional Tests....................................3 Fault Isolation....................................3 Adjustment .......................................3 Miscellaneous....................................4 Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 200 Flip Flop Motion Circuit/Mechanical Descriptions The C can pivot on its cradle axis ±180 degrees. A Flip-Flop brake secures the C in whatever position you choose. There is a brake handle on either side of the Flip-Flop assembly. To secure the C and prevent further rotation on the cradle axis, position either brake handle toward the “lock”...
Page 201 Flip Flop Motion Functional Tests Release the Flip Flop brake and verify that the C can rotate freely in both directions. Set the Flip Flop brake and verify that it prevents the C from rotating on its cradle in either direction. Fault Isolation Problem Possible Cause...
Page 202 Flip Flop Motion Remove the Brake Handle and reposition it on the shaft so that the Mechanical Brake stop fits in the Brake Handle’s slot. Secure the Brake Handle with the screw. Adjust the position of the second brake handle so that both handles are uniform. If the brake cannot be adjusted, replace the Flip Flop Brake Shoe.
Page 203 Orbital Motion Orbital Motion Circuit/Mechanical Descriptions..............................2 Functional Tests....................................3 Fault Isolation....................................4 Adjustment .......................................4 Miscellaneous....................................4 Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 204 Orbital Motion Circuit/Mechanical Descriptions The C-Arm can rotate in its cradle through an arc of 115 degrees. The back of the C weldment has a scale that aids in positioning the C as it rotates. Once the position of the C is satisfactory, set either brake handle to the lock icon on the cradle to keep the C from moving.
Page 205 Orbital Motion Friction Clutch Roller Yoke Brake Pad Brake Brake Arm Roller Spring Washers Brake Pivot Brake Shaft Cylinder Bearing Brake Cam Brake Handle Cylinder Bearing Brake Handle Orbital Brake Assembly Functional Tests CAUTION: When you release the orbital movement brake, place your other hand on the C so that you have full control of the its movement.
Page 206 Orbital Motion Fault Isolation Inspect the Orbital Brake Assembly if the orbital brake either fails to engage or release as it should. Replace any worn or broken parts. Refer to the Replacement chapter for disassembly instructions. Adjustment No initial or periodic adjustment of C-Arm orbital movement is required. Miscellaneous Not applicable.
Page 207 Wig Wag Motion Wig Wag Motion Circuit/Mechanical Descriptions..............................2 Functional Tests....................................4 Fault Isolation....................................4 Adjustment .......................................5 Miscellaneous....................................6 Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 208 Wig Wag Motion Circuit/Mechanical Descriptions The entire C-Arm can pivot laterally (wig wag) ±10 degrees as shown in the following illustration. A brake assembly allows you to pivot the C-Arm to a convenient position and then lock it in place. Wig-wag Brake + 10 Degrees Wig Wag Motion and Brake...
Page 209 Wig Wag Motion The following illustration shows the internal parts associated with the Wig Wag feature. The brake operates by compressing the Brake Pad between the floating plate and fixed plate shown below. Bearing Block Cover Cross-arm Brake Handle Fixed Plate Dowel Pin Brake Pad Floating Plate...
Page 210 Wig Wag Motion Functional Tests Loosen the Wig Wag brake and turn the Cross-Arm right or left 10 degrees on its Vertical Column mount. Make sure the Cross Arm turns freely with the brake released. Make sure you can tighten the Wig Wag brake to secure the Cross Arm in any normal lateral position.
Page 211 Wig Wag Motion Adjustment The Wig-Wag pivot mechanism does not require initial or periodic mantenance. The Wig-Wag brake is also adjusted at the factory so that when the brake engages, the brake handle is approximately parallel to the cross-arm. However, after you replace the brake, adjust as needed: Remove Torx screw that retains the brake handle.
Page 212 Wig Wag Motion Miscellaneous Not applicable. Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 213 Horizontal Cross Arm Motion Horizontal Cross Arm Motion Circuit/Mechanical Descriptions..............................2 Functional Tests....................................4 Fault Isolation....................................4 Adjustment .......................................4 Miscellaneous....................................4 Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 214 Horizontal Cross Arm Motion Circuit/Mechanical Descriptions The Horizontal Cross Arm supports the C-Arm in front of the Generator. Roller bearings in the Cross Arm Bearing Block permit you to extend or withdraw the C-Arm to a suitable position. You can then use the Cross Arm brake to secure the C-Arm in position.
Page 215 Horizontal Cross Arm Motion The following illustration shows the Cross Arm brake assembly. Setting the Cross Arm brake engages a brake pad that bears against the Cross Arm. This prevents the Cross Arm from moving. Brake Pad Cam Follower Brake Mount Brake Shaft Brake Handle Cross Arm Brake Assembly...
Page 216 Horizontal Cross Arm Motion Functional Tests Unlock the Horizontal Cross Arm and extend it about eight inches forward from the normal transport position. (The Cross Arm has a calibrated extension scale that aids in precise positioning.) To extend the Cross Arm, move the brake to the UNLOCK position, push the Cross Arm into position, and set the brake handle to the LOCK position.
Page 217 L-Arm Motion L-Arm Motion Circuit/Mechanical Descriptions..............................2 L-Arm Motion....................................2 L-Arm Servicing Hazards ................................4 L-Arm Brake ....................................6 Functional Tests....................................8 Fault Isolation....................................8 Adjustment .......................................8 Miscellaneous....................................9 Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 218 L-Arm Motion Circuit/Mechanical Descriptions The following paragraphs describe normal L-Arm Motion, L-Arm Hazards, and how to check operation of the L-Arm Brake. L-Arm Motion Note: There is no L-Arm on the Super C You can manually rotate the L-Arm on the end of the Cross Arm up to 180 degrees in either direction. Gas-shocked-dampened springs inside the L-Arm hold it in place when you remove your hand.
Page 219 L-Arm Motion Rotation Scale L-arm L-arm Rotation Rotation Brake L-Arm Rotation and Brake Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 220 L-Arm Motion L-Arm Servicing Hazards WARNING: Read the following information carefully before attempting to replace the Image Intensifier or X-ray tube, and before repairing or adjusting the L-Arm brake. Failure to observe these precautions could result in death, personal injury, or equipment damage.
Page 221 L-Arm Motion End Cap Safety Bolt Access Position L-Arm in normal vertical position as shown in the picture above. Do not set L-Arm brake at this time. Position C vertically and set Flip Flop brake. Rotate L-Arm slightly until hole for safety bolt becomes visible. Install and secure safety bolt as shown in the following illustration.
Page 222 L-Arm Motion C-Arm Safety Bolt L-Arm Brake The following illustration is an exploded view of the L-Arm Brake assembly. If the L-Arm brake doesn't work correctly, check the adjustment of the Brake Handle first, and then look for a loose, damaged, or worn out Brake Pad. Contents Installation Service...
Page 223 L-Arm Motion Brake Handle Mechanical Brake Stop L-Arm Brake Assembly Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 224 L-Arm Motion Functional Tests Release L-Arm Brake and verify that L-Arm rotates smoothly in both directions. Set L-Arm brake. Verify that L-Arm Brake locks the L-Arm firmly in position before brake handle contacts mechanical stop. Fault Isolation Problem Possible Cause Solution L-Arm does not rotate freely Brake shoe is loose and...
Page 225 L-Arm Motion Adjust the position of the second brake handle so that both handles have the same angular position. Retest the brake. If brake does not engage even after brake handle position adjustment, replace the L-Arm brake shoe. (Refer to Replacement chapter in this manual for details.) Miscellaneous Not applicable.
Page 226 L-Arm Motion Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 227 Vertical Column Lift Vertical Column Motion Circuit/Mechanical Descriptions..............................2 Vertical Column Lift ..................................2 Vertical Column Power Supply PS3 ..............................3 Power/Motor Relay PCB ................................5 Power/Signal Interface PCB................................7 Vertical Column Lift Buttons ................................8 Fast Stop Switches..................................9 Functional Test....................................10 Fault Isolation....................................11 Adjustment .....................................12 Miscellaneous....................................12 Contents Installation Service...
Page 228 Vertical Column Lift Circuit/Mechanical Descriptions The following paragraphs describe how the Vertical Column Lift, Vertical Column Power Supply PS3, Power/Motor Relay PCB, Power/Signal Interface PCB, and Vertical Column Lift Buttons work together to move the Vertical Column up and down. Vertical Column Lift CAUTION: Be careful when you move the motorized Vertical Column.
Page 229 Vertical Column Lift Cabling Routed Inside Vertical Column Vertical Column Assembly Generator Chassis Vertical Column Lift with Cabling Vertical Column Power Supply PS3 The Vertical Column Power Supply produces 24 VDC at 6 Amps, which powers the DC motor that drives the Vertical Column up and down.
Page 230 Vertical Column Lift • The control connector, which accepts switch closure signals from the Vertical Column Lift Buttons. These buttons apply 36 VDC to the LIFT_UP_SW or the LIFT_DN_SW selector line on PS3. The Vertical Column Lift moves up or down, depending on which selector line receives the 36 VDC.
Page 231 Vertical Column Lift Power/Motor Relay PCB The Power/Motor Relay PCB, located under the generator’s front cover, performs a variety of tasks, some of which are related to movement of the Vertical Column Lift. The Power/Motor Relay PCB is basically a slave to the X-Ray Controller PCB, and consists mostly of relays, LEDs, fuses, MOVs, resistors, capacitors, and other non-programmable devices.
Page 232 Vertical Column Lift Power/Motor Relay PCB Power/Motor Relay PCB Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 233 Vertical Column Lift Power/Signal Interface PCB The Power/Signal Interface PCB routes +24 Volts from PS2 to the Power/Motor Relay PCB. This voltage operates the relays on the Power/Signal Interface PCB. Fuse F11 protects this line. The fuse is rated at 3.15 amps and resides on the Power Signal Interface PCB.
Page 234 Vertical Column Lift Vertical Column Lift Buttons The Vertical Column lift buttons mount on the Cross Arm Bearing cover, shown below. Each Vertical Column lift pushbutton assembly consists of two ganged SPST momentary closure switches. Depressing either pushbutton closes both its switches. One closed switch actuates relays on the Power/Motor Relay PCB that supply 115 VAC to Column Power Supply PS3.
Page 235 Vertical Column Lift Fast Stop Switches Press either Fast Stop switch to immediately halt movement of the Vertical Column and stop the C-Arm from generating X-Rays. There is one Fast Stop switch on each Control Panel assembly near the Horizontal Extension handle. These safety switches have red covers, making them easy to spot in an emergency.
Page 236 Vertical Column Lift Functional Test Power up system and allow it to boot completely. Press and hold the Up Vertical Column button. Verify that Vertical Column extends to its maximum height, and that it stops only when it reaches full extension. Press and hold the Down Vertical Column button.
Page 237 Vertical Column Lift Fault Isolation Problem Possible Cause Possible Solution Vertical Column movement button does Faulty button Inspect button and replace it if not produce column movement or necessary. button's operation is intermittent Faulty wiring between button and Look for loose or broken connectors or Power/Motor Relay PCB.
Page 238 Vertical Column Lift Problem Possible Cause Possible Solution Fast stop button does not halt stop Faulty Fast Stop button Inspect button and replace it if necessary column movement (see Replacement chapter). Faulty wiring or connector between Inspect; repair or replace as necessary button and P4 on Power/Motor Relay (see Replacement chapter)..
Page 239 Steering and Braking Steering and Braking Circuit/Mechanical Descriptions..............................2 Front Casters....................................2 Rear Casters, Steering, and Brakes..............................3 Balance Wheel ....................................6 Functional Tests....................................7 Front Casters....................................7 Rear Casters ....................................7 Steering ......................................7 Brakes ......................................8 Balance Wheel ....................................8 Fault Isolation....................................8 Adjustment .....................................10 Miscellaneous....................................12 Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 240 Steering and Braking Circuit/Mechanical Descriptions Four casters support the 9800 C-Arm. The front two casters are offset; the rear two casters are not (An offset caster is one that trails to the rear as the supported device moves forward, much like a wheel on a grocery cart.) There are two smaller casters at the front of the C-Arm and two larger casters at the rear.
Page 241 Steering and Braking Rear Casters, Steering, and Brakes Like the front wheels of a car, the C-Arm's rear casters are manually steerable. A chain drive connected to a steering shaft on a steering handle makes this possible, and ensures that the two rear casters track in the same direction. Rear Caster Contents Installation...
Page 242 Steering and Braking You can steer both rear casters straight ahead when you move the C-Arm forward, or at any angle to move the C-Arm sideways. You can feel a mechanical detent in the steering handle arc that identifies the 90° left, 90° right, and straight ahead steering positions.
Page 243 Steering and Braking Brakes On Brakes Off Brake Pedal Operation Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 244 Steering and Braking Balance Wheel There is a balance wheel at the rear of the C-Arm under the battery tray. The balance wheel is a safety device that normally does not contact the floor unless the generator tips backwards for some reason. This should not happen unless you remove the C from the generator for servicing purposes.
Page 245 Steering and Braking Functional Tests Perform the following tests to verify correct operation of the C-Arm's suspension and steering components. Front Casters Verify that both front casters contact the floor and that they both roll freely. Verify that both casters pivot freely on their vertical axles. Make sure there are no worn or damaged areas on either caster tread.
Page 246 Steering and Braking Brakes Step on either brake pedal, tilting it forward or backwards. Verify that both rear wheels lock. Step on either brake pedal, placing it in a level position. Verify that brakes release and that both rear casters roll and steer freely. Balance Wheel Note: You need to get a clear look at both sides of the Balance Wheel when performing the following tests.
Page 247 Steering and Braking Problem Possible Cause Solution Axle parts require lubrication. Inspect and lubricate as necessary. Worn or damaged front Careless or heavy use; damage from workplace Replace caster and advise customer of caster tread hazard. any workplace hazards you discover. Front caster binds or Worn caster bearing Replace caster.
Page 248 Steering and Braking Problem Possible Cause Solution Balance wheel axle bolt is worn or damaged. Replace axle bolt. Balance wheel is loose on Damaged balance wheel. Replace balance wheel axle bolt or wobbles. Worn or damaged balance wheel axle bolt. Replace axle bolt.
Page 249 Steering and Braking Install end cap and screw you removed in step 3. Remove jack from C-Arm axle and check brakes for proper operation. Adjustment Brake Plunger Brake Plunger Yoke Bearing Housing Compression Spring Cylinder Bearing Set Screw Adjustment Rear Wheel Yoke Brake Plunger Wheel...
Page 250 Steering and Braking Miscellaneous Not applicable. Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 251 Diagnostics Diagnostics Troubleshooting Methods ................................2 Bootup ......................................2 Time Required....................................2 Boot Sequence Display on C-Arm Control Panel ..........................2 Generator Defaults ..................................6 C-Arm Control Panel VFD Messages .............................6 A/D Channel Failure ..................................13 Generator Processing..................................14 Filament Control ..................................14 Stator Control ....................................15 Heat Calculations ..................................15 Management Functions .................................15 Disable X-Rays....................................15 Perform Technique Lock ................................15...
Page 252 Diagnostics Troubleshooting Methods This section is a brief troubleshooting guide for those who must identify and correct failures associated with the 9800 C-Arm. It presents proven troubleshooting methods and provides an overview of the tools available to the Field Service Engineer. It also describes solutions to actual problems experienced with fielded systems.
Page 253 Diagnostics new software because the C-Arm has to boot completely for the Remote Utilities (RUT) to work. It may be necessary to start the system from the boot disk and troubleshoot the system. C-Arm Control Panel Boot Sequence Display (Squares) The bootup squares have the following meaning: Five Squares: Initialization of interrupts, display, and timers is complete.
Page 254 Diagnostics C-Arm Control Panel Boot Sequence Display (Arrows) The bootup arrows have the following meaning: No Arrows: The operating system begins loading. If bootup fails on this arrow, reload the software. One Arrow: ARCNet initializes. Software architecture initializes. System sets C-Arm time. If bootup fails on this arrow, check ARCNet connection on the Fluoro Functions PCB and X-ray Controller PCB.
Page 255 Diagnostics Five Arrows: Generator object tasks initialize. If bootup fails on this arrow, check communications between Workstation and C- Arm. Check the ARCNet. Verify that Workstation completely boots. Six Arrows: All generator objects have been created and relationships formalized. Communications between Workstation and C- Arm have been established.
Page 256 Diagnostics Generator Defaults After normal bootup, the C-Arm defaults to the following conditions: • Alarm Reset is OFF. • Automatic contrast and brightness are ON. • Auto technique is ON. • Camera iris is OPEN. • Collimator leaves are OPEN. •...
Page 257 Diagnostics The following is an alphabetized list of messages that can appear on either C-Arm Control Panel display during initialization or operation of the Series 9800 Mobile Digital Imaging System. These messages advise you of processing being done, notify you of errors, and provide warnings to prevent personal injury or equipment damage.
Page 258 Diagnostics BATTERY CHARGE - XX% /WAIT - The system displays this message alternating with the technique when the C-Arm batteries are below 40% of their required charge. XX is the actual charge percentage, which the system displays in the message. The WAIT message appears in the center of the technique display.
Page 259 Diagnostics any X-ray in progress, and disables future X-rays. First, turn the system off for at least five seconds and restart it. If the problem persists, check the functionality of the system and check the ARCNET communications. Frequent Communication Failed errors may also be indicative of corrupted persistent object files, which may require a software reload.
Page 260 Diagnostics FOOTSWITCH SECURITY ERROR - This message appears when the X-ray security line does not match the X-ray control. This error applies only to the Left or Right X-ray controls. This error condition shuts down the system. HLF OVERTIME - This message appears when a Digital Cine run or High Level Fluoro (HLF) has exceeded the preset time and has been terminated.
Page 261 Diagnostics against either Control Panel. After releasing a stuck key, press any C-Arm control panel key to continue. A malfunctioning control panel key may interfere with operation if you attempt to continue. KEY SWITCH IN STANDBY - X-RAYS AND LIFT DISABLED - This message appears when the X-ray disable keyswitch on the generator is turned on (key handle vertical) , preventing movement of the vertical column and generation of X-rays.
Page 262 Diagnostics PRECHARGE CIRCUIT TIMEOUT - This message indicates the CONTACT relay failed to close during the startup process. This fault causes the system to shut down. PRECHARGE VOLTAGE ERROR - This message appears when the voltage on the generator’s precharge capacitors exceeds 250 Volts.
Page 263 Diagnostics WARNING LOW MA - PRESS ANY KEY - The system generates this message when the actual mA being produced is lower than the amount shown on the C-Arm Control Panel display, and is not within tolerance. Lower mA may result in poor image quality.
Page 264 Diagnostics Channel # Message Signal Name Pin and Reference Housing Temperature HSNG_TEMP P1-85, 86 Stator Sense STATOR_SEN P1-108, 109 Spare; not used None None Filament B FIL_B_SEN P1-50, 51 Flux Sense FLUX_SEN P1-56, 57 Filament Current FIL_CUR P1-52, 53 Filament Voltage FIL_VOLT P1-54, 55 Charge Current...
Page 265 Diagnostics Stator Control The X-ray tube’s anode must rotate whenever the system generates X-rays to prevent damage to the anode. System software rotates the anode by applying start and run voltages to the stator winding on the X-ray tube. It also removes the run voltage from the stator winding when there have been no inputs to the system for five minutes, and places a message in the Generator Events log when this occurs.
Page 266 Diagnostics Accumulate Exposure Time Software maintains an accumulated exposure time for the current patient. This time appears on each C-Arm Control Panel centered between kV and mA when the system is in Manual or Auto Fluoro mode. You can manually reset the exposure time, or let it reset automatically when the system boots or when the current patient changes.
Page 267 Diagnostics Message Type or Code Data Item OFF – WAIT 5 SECONDS 2-None CHARGER FAILED Error 1-Battery Voltage (Inverter B A/D) 2-Charge Current (Charger I Sense A/D) CHARGER FAILED – POWER OFF – WAIT 5 Error 1-Battery Voltage (Inverter B A/D) SECONDS 2-Charge Current (Charger I Sense A/D) BATTERY CHARGE - ##%...
Page 268 Diagnostics Message Type or Code Data Item 2-0 = Flash corrupted 1 = Workstation corrupted 2 = Flash and Workstation corrupted 3 = Workstation new than flash 4 = Flash newer than Workstation 5 = Generator event flash corrupted 6 = ABS flash corrupted 7 = ABS download failed 8 = General Protection Fault (random pointer) 9 = Altered persistent data...
Page 269 Diagnostics Message Type or Code Data Item HOUSING IS HOT - ##% Error 1-Percentage of Capacity 2-Heat Units in kilo-units HOUSING WARM - ##% Error 1-Percentage of Capacity 2-Heat Units in kilo-units HOUSING OVERHEATED Error 1-Percentage of Capacity 2- Heat Units in kilo-units HV GENERATOR ON Error 1-High Voltage Input Register Reading...
Page 270 Diagnostics Message Type or Code Data Item 2- Desired kV KV ON IN ERROR – POWER OFF, WAIT 5 Error 1-Sensed kV SECONDS 2-None LIFT SWITCH STUCK – PRESS ANY KEY Error 1-None 2-None WARNING, HIGH MA – PRESS ANY KEY Error 1-Sensed mA 2-2-Desired mA MA SENSOR FAIL...
Page 271 Diagnostics Message Type or Code Data Item SATURATION FAULT – POWER OFF. WAIT 5 Error 1-High Voltage Input Register Reading SECONDS 2-None STATOR NOT ON – POWER OFF. WAIT 5 Error 1-High Voltage Input Register Reading SECONDS 2-None STATOR STANDBY Operation 1-None 2-None...
Page 272 Diagnostics ARCNet Waveforms Nodes The ARCNet is the primary control path in the Series 9800 Mobile Digital Imaging system. The path consists of four ARCNet nodes, as follows: Two nodes in the C-Arm, located on the following PCBs: Fluoro Functions PCB. X-Ray Controller PCB.
Page 273 Diagnostics Turn the system on and allow it to boot completely. Connect channel 1 of a digital oscilloscope to ARCNET_HI, which is TP6 on the extender PCB. Connect channel 2 of a digital oscilloscope to ARCNET_LO, which is TP7 on the extender PCB. Configure the oscilloscope to sum the two components of the differential signal.
Page 274 Diagnostics All ARCNet Nodes Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 275 Diagnostics X-ray Controller Node Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 276 Diagnostics Fluoro Functions Node Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 277 Diagnostics Workstation Node Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 278 Diagnostics Service Node Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 279 Diagnostics PCB Diagnostic LEDs The following illustrations show LEDs on C-Arm PCBs that can be used for troubleshooting purposes. All of these PCBs reside in the C-Arm card rack. A simplified illustration of the location of these PCBs is shown next, followed by an illustration of the LEDs on each PCB.
Page 280 Diagnostics Events indicated by U1 and U2: CPU registers initialized Program flash memory checksum passed Program initialized data area initialized First program null data initialized Secind program null data initialized FFB application s/w started FFB tasks initialized FFB architecture s/w initialized ArcNet initialized Timers initialized The leds are shown as they appear after boot.
Page 281 Diagnostics CPU_INTERLOCK - Turns on at beginning of +24V interlock stage (13 arrows on display) FLASHING FLASHING The LEDs are shown as they appear after boot These LEDs are connected to the data bus and you should see activity during bootup. They were originally installed for software development purposes.
Page 282 Diagnostics Filament Driver PCB DS1 is lit during bootup (16-18 arrows), is off after bootup, and will light at power off and then decay as the pre-charge caps are discharged. Filament Drive Signals Drive B Low Drive B High Drive A Low Drive A High Over KVP Fault Overload Fault...
Page 283 Diagnostics KVP_DRV_A_TOP These LEDs will be lit only if there KVP_DRV_A_BTM is a problem with the timing KVP_DRV_B_TOP of the KV drive signals. KVP_DRV_B_BTM NORMAL FILAMENT DRIVE OK GROUND INTEGRITY FAULT LATCH INTERLOCK COMPLETE NORMAL SHUTDOWN FAULT X-RAY ON ON DURING X-RAY EXPOSURE X-RAY ENABLE ON DURING X-RAY EXPOSURE NORMAL...
Page 284 Diagnostics FLUORO FUNCTIONS PCB SOFTWARE STATE DISP Checking Flash Initializing processor Clearing Memory (BSS1) Clearing Memory (BSS2) OS initializing Application Initialization beginning Architecture utilities initializing Network Initialization Timers being initialized Tasks Initializing Fatal Error (System halted - Stack overflow, no memory, unhandled interrupt) 0D,FF System halted (Out of Memory) E0,XX,FF ARCNET transmit pipe temporarily full...
Page 285 Calibration Calibration Overview ......................................3 Required Tools and Equipment ..............................3 Power Supply Calibration................................4 DC Power Supply PS1 ..................................4 Multi-Output Power Supply PS2..............................5 Generator Calibration ..................................6 High Voltage Supply Regulator (HVSR) Setup ..........................6 mA Null Adjustments ................................7 PWM Chip Sync Adjustment..............................7 Ramp Peak Voltage Adjustment.............................10 Adjustment of Dead Time Between kV Drive Signals......................11 Differentiator Setup.................................13 Stability Pot (R83) Overshoot Adjustment ..........................15...
Page 286 Calibration Collimator Mechanical Centering ..............................47 Camera Decentration ..................................50 Collimator Alignment Verification ..............................56 Collimator / Camera Calibration ..............................62 Using RUT ....................................62 Using UtilitySuite..................................63 Camera Calibration ..................................64 Camera Cooler Verification .................................64 Camera Iris....................................65 Iris Stop Verification................................65 Iris Stop Calibration ................................66 Lens Focus....................................68 Focus Verification ...................................68 Focus Adjustment ...................................69 Monitor Setup ....................................71...
Page 287 Calibration Overview The Generator Calibration and Beam and Camera alignment procedures described next prepare the system for operation, and should be performed each time you replace a major system component. When possible, run these tests in the same sequence that they appear in this section. Required Tools and Equipment Extender PCB (00-879248) Beam Alignment Fixture Tool (BAFT) (9-inch BAFT is 00-878105-01;...
Page 288 Calibration Power Supply Calibration DC Power Supply PS1 Calibration of Power Supply PS1 consists of checking each output for proper voltage under load, and making adjustments to the high-current +5.1 Volt output, if necessary. Calibrate the supply when you replace it, and semiannually as described in the periodic maintenance procedures.
Page 289 Calibration Check +12 Volt output at J2-8. Output should measure between +11.4 and +13.2 Volts. Output is not adjustable. Replace PS1 if output is not within this range under normal load conditions (<2.5 Amps). Check -15 Volt output at J2-11. Output should measure between -14.55 and -15.45 Volts. Output is not adjustable. Replace PS1 if output is not within this range under normal load conditions (<1.2 Amps).
Page 290 Calibration Check the voltage between TP3 and TP1 (ground). If necessary, adjust trim pot R30 to give a reading of of +24.1 ±1%Volts. Check the voltage between TP6 and TP1 (ground). If necessary, adjust trim pot R7 to give a reading of -6.10 Volts (+.25 Volts ±1%).
Page 291 Calibration mA Null Adjustments Note: When you boot the system for the first time after replacing the High Voltage Supply Regulator, the system may display MA ON IN ERROR. This is a fatal message that shuts the system down. This may happen because the mA Null adjustment described next needs to be done.
Page 292 Calibration HF_SYNC and RAMP Signals Out of Sync Adjust R139 counterclockwise until the two signals come out of sync again. Note the position of the pot. Set R139 midway between the two out-of-sync points. Verify that both signals are synchronized with R139 in this position. Contents Installation Service...
Page 293 Calibration HF_SYNC and RAMP Signals In Sync Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 294 Calibration Ramp Peak Voltage Adjustment CAUTION: Do not make an X-ray exposure at this point in the procedure. While viewing channel 2 of the oscilloscope (TP57 RAMP), adjust R109 for a peak amplitude of 3.8 Volts. The following figure shows the RAMP signal after proper adjustment. Properly Adjusted Ramp Peak Voltage Contents Installation...
Page 295 Calibration Adjustment of Dead Time Between kV Drive Signals CAUTION: To prevent cross-conduction in and destruction of the IGBTs, turn both R137 and R84 on the High Voltage Supply Regulator PCB fully clockwise. This increases the dead time between High Voltage drive pulses to maximum.
Page 296 Calibration Adjust to Slightly Not less than More than 1.5 USEC 1.5 USEC Dead Time Periods 5 Volts Correctly Adjusted kV Drive Signals CAUTION: The dead time is not the same on both sides of the drive pulses. Find the dead time that is smallest, and adjust it for 1.5 microseconds.
Page 297 Calibration CAUTION: There may be some apparent drive signal instability during dead time adjustment. Make sure that the dead time does not become less than 1 microsecond during these unstable periods. Failure to observe this precaution may damage the IGBTs. Connect the oscilloscope to TP66 and TP70 on the Generator Driver PCB, and repeat steps 2 and 3 for the B dead time adjustment.
Page 298 Calibration Properly Adjusted Differentiator Waveforms Note: R63 moves the sloping portion of the form between the dip at left and the hump at right, up and down. R23 moves the trailing slope up and down to the right of the hump. The object is to get a smooth curve, ignoring the dip and hump. Adjust R34 to give a rise time with a small dip at the beginning of the ramp, and the peak of the ramp not higher than the flat portion.
Page 299 Calibration Stability Pot (R83) Overshoot Adjustment CAUTION: Failure to perform this adjustment may cause kV overshoots and X-ray tube arcing. If you are installing a new HVSR PCB, turn R83 on the High Voltage Supply Regulator PCB fully clockwise (10 turns max), and then turn it counterclockwise about one turn.
Page 300 Calibration 400 mV Overshoot Adjustment Re-check mA offset adjustments before doing filament calibration. Note: Before you perform the next step, the Filament calibration must be done. Select a technique of 100 kV @ 100 mA. Monitor TP21 (KV_SEN_TP) on one oscilloscope channel, and monitor TP40 (HI_MA_SEN) on the other oscilloscope channel, using TP49 (HI_MA_SEN_REF) for ground.
Page 301 Calibration Repeat the previous step with 120 kV @ 125 mA. KV_SEN_TP and HI_MA_SEN Waveforms Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 302 Calibration Filament/Duty Cycle Calibration Note: For pre-OPIS system software, use the RUT utility CD. Using RUT Attach the Serial Com Port of the Laptop to the ARCNET Connection (J4) of the Workstation. On the Laptop, launch RUT. In the upper left hand corner of the Main Menu Window click on Tools. Then highlight and click on Connect. When the Login Succeeded Message comes up point and click on the OK Button.
Page 303 Calibration 14. Highlight and click on Save Filament Calibration Data File As. 15. When the new window appears, type in XXXXXXXX.fcl (Mainframe’s Barcode Number) then click on Save. Verify Calibration Data File was saved. 16. Click on File located in the upper left-hand corner. 17.
Page 304 Calibration Fluorographic Pulsed mA Accuracy Test Power up the Workstation and allow the Workstation and C-Arm to boot completely. Use the oscilloscope to monitor TP40 (HI_MA_SENSE) on the HVSR PCB. You will be converting voltages displayed on the scope to tube current values: A.
Page 305 Calibration Entrance Exposure Rate Limits Verification Install Collimator cover over the Collimator assembly. Position the 15cc Dosimeter Ion Chamber 30 cm above the Image Intensifier input grid. (Measure from the grid surface to the center of the Ion Chamber.) Measure the current atmospheric pressure in mm of mercury. Measure the current room temperature in °C.
Page 306 Calibration Record the breakpoint at the corresponding kVp listing in the mA Limit File Editor Window. Increase kVp to the next setting that is evenly divisible by 5 (in this case, 90 kVp). Reduce mA until the entrance exposure rate does not exceed 9.26 R/minute. In the mA Limit File Editor, record the mA value by the corresponding kVp entry. Repeat and record measurements, increasing kVp by five kVp each time, for the remaining kVp settings.
Page 307 Calibration 20. In the new window that appeared, highlight and click on Download Ma Limit Data To 9800 . Verify that the mA Limit File was downloaded to the 9800. Note: The Mainframe will display Please Wait on the Control Panel while the files are being downloaded to the Mainframe. When downloading is completed the Mainframe’s displays will return to normal.
Page 308 Calibration 11. Increase kVp to the next nearest setting that is evenly divisible by 5 kVp. Decrease mA to prevent the exposure rate from exceeding 18 R/minute. Record in the mA Limit File Editor at the corresponding kVp the mA value. 12.
Page 309 Calibration When the new window appears, highlight and click on Download mA Limit Data to 9800. Note: The C-Arm control panel displays PLEASE WAIT while files download to the Workstation. When downloading is complete, the control panel displays return to normal. Click Tools and Disconnect to disconnect RUT.
Page 310 Calibration 6. At the top of the Dap Calibration Window, ensure that the proper Image Intensifier Size, and the proper number of Collimator Leafs, for the system under test, are set. Manually adjust the technique to 40 kVp and 5 mA. While taking an X-ray, for approximately 10 seconds, read the dosimeter and record the Dose Rate in mR/sec.
Page 311 Calibration 21. Point, highlight and click on Save As Dap Calibration File. In the Save Configuration As Window, ensure that the Generator’s Barcode followed by file extension.dap is displayed in the FILE NAME Box. Then point and click on the SAVE Button. For dual-leaf collimators only: skip steps 22-95, do step 96.
Page 312 Calibration 27. On the DOS Keyboard, press the X Key. 28. Take a Normal Fluoro X-ray for at least 10 seconds, read and record the Dose Rate in mR/sec. Enter this value in the correct corresponding box in the Dose Area Product Calibration Window. 29.
Page 313 Calibration For 9-inch Systems, the Iris report is 17 ± 2 For 12-inch Systems, the Iris report is 14 ± 2 39. On the DOS Keyboard, press the X Key. 40. Take a Normal Fluoro X-ray for at least 10 seconds, read and record the Dose Rate in mR/sec. Enter this value in the correct corresponding box in the Dose Area Product Calibration Window.
Page 314 Calibration 49. In the Dose Area Product Calibration Window, in the box provided next to the Drive Iris To Button, click on the box containing the following iris position: For 9-inch System For 12-inch System 260 Point and click on the DRIVE IRIS TO Button. 50.
Page 315 Calibration 58. Take a Fluoro X-ray, then on the DOS Keyboard press the X Key. On the DOS Monitor, on the DAP_CMP Report line, ensure that the Shutter report is ≥ 97.5, the Rotation report is 0 ± 2. For 9-inch Systems, the Iris report is 61 ± 2 For 12-inch Systems, the Iris report is 53 ±...
Page 316 Calibration 68. Take a Normal Fluoro X-ray for at least 10 seconds, read and record the Dose Rate in mR/sec. Enter this value in the correct corresponding box in the Dose Area Product Calibration Window. 69. Manually adjust the Collimator Rotation fully CCW.
Page 317 Calibration For 9-inch Systems, the Iris report is 82 ± 2 For 12-inch Systems, the Iris report is 78 ± 2 79. On the DOS Keyboard, press the X Key. 80. Take a Normal Fluoro X-ray for at least 10 seconds, read and record the Dose Rate in mR/sec. Enter this value in the correct corresponding box in the Dose Area Product Calibration Window.
Page 318 Calibration 89. Point and click on the CALCULATE CONSTANTS Button. All constants except for the last two Iris Reports should be non- zero. 90. In the upper left-hand corner of the RUT Main Menu, point and click on FILE. 92. the SAVE CONFIGURATION AS Window, ensure that the Generator’s Barcode followed by file extension .dap is displayed in the FILE NAME Box.
Page 319 Calibration Position the 150/180cc dosimeter ion chamber in the center of the Image Intensifier. See the instructions just above about which brand dosimeter may be used. On the Generator’s Control Panel, select Manual Fluoro Mode and open the Collimator and Iris Leafs completely. Take a Fluoro X-ray, then on the DOS Keyboard press the X Key.
Page 320 Calibration 18. Record the Dose Rate in mR/second and mA in the DAP Tube Calibration Grid. 19. Point and click on the CALCULATE COEFFICIENTS Button. 20. Click on FILE->Save As->Workstation File . 21. In the SAVE dialog Window, ensure that the Generator’s Barcode followed by file extension.dap is displayed in the FILE NAME Box.
Page 321 Calibration 26. Take a Fluoro X-ray, then on the DOS Keyboard press the X Key. On the DOS Monitor, on the DAP_CMP Report line, ensure that the Shutter report is ≥ 97.5, the Rotation report is 0 ± 2. For 9-inch Systems, the Iris report is ≤ 2 For 12-inch Systems, the Iris report is ≤...
Page 322 Calibration 36. Take a Normal Fluoro X-ray for at least 10 seconds, read and record the Dose Rate in mR/sec. Enter this value in the correct corresponding box in the DOSE AREA PRODUCT CALIBRATION Window. 37. Manually adjust the Collimator Rotation fully CCW.
Page 323 Calibration For 9-inch Systems, the Iris report is 32 ± 2 For 12-inch Systems, the Iris report is 27 ± 2 47. On the DOS Keyboard, press the X Key. 48. Take a Normal Fluoro X-ray for at least 10 seconds, read and record the Dose Rate in mR/sec. Enter this value in the correct corresponding box in the DOSE AREA PRODUCT CALIBRATION Window.
Page 324 Calibration 57. In the DOSE AREA PRODUCT CALIBRATION Window, in the box provided next to the DRIVE IRIS TO Button, click on the box containing the following iris position: For 9-inch System For 12-inch System 325 Point and click on the DRIVE IRIS TO Button. 58.
Page 325 Calibration 66. Take a Fluoro X-ray, then on the DOS Keyboard press the X Key. On the DOS Monitor, on the DAP_CMP Report line, ensure that the Shutter report is ≥ 97.5, Rotation report is 180 ± 2. For 9-inch Systems, the Iris report is 73 ± 2 For 12-inch Systems, the Iris report is 67 ±...
Page 326 Calibration 76. Take a Normal Fluoro X-ray for at least 10 seconds, read and record the Dose Rate in mR/sec. Enter this value in the correct corresponding box in the DOSE AREA PRODUCT CALIBRATION Window. 77. Manually adjust the Collimator Rotation to 180 ± 2. 78.
Page 327 Calibration For 9-inch Systems, the Iris report is 90 ± 2 For 12-inch Systems, the Iris report is 90 ± 2 87. On the DOS Keyboard, press the X Key. 88. Take a Normal Fluoro X-ray for at least 10 seconds, read and record the Dose Rate in mR/sec. Enter this value in the correct corresponding box in the DOSE AREA PRODUCT CALIBRATION Window.
Page 328 Calibration Beam Alignment Central Imaging Axis Collimator Mechanical Centering Beam Alignment tool to Image Tube Centering Camera Mechanical Centering Components Affecting Beam Alignment Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 329 Calibration Beam Alignment Tool to Image Tube Centering Attach the beam alignment tool to the face of the image tube. Align the beam alignment tool to the center of the image tube, so that when the collimator iris is closed partially, the ruller marks on the tool intersect the flat portions of the collimator iris (see the following diagram).
Page 330 Calibration Image Tube Calibration Image Tube Sizing Verification Fluoro through the beam alignment tool in Normal, Mag1, Mag2 modes and verify the following diameter measurements on the monitor. (These measurements are made with circular blanking turned on). Use the ruler marks that intersect the center of the flat portion of the collimator iris leaves to determine the X & Y image diameters.
Page 331 Calibration When the image sizing adjustments are complete, set switch SW1 to the ON position on the Image Intensifier Power Supply, as shown in the following: C = Edge Focus B = Overall Focus A = Size Image Tube Power Supply 00-901180 9 or 12-inch Image Tube Power Supply Access...
Page 332 Calibration Collimator Mechanical Centering Mechanically center collimator as follows: With the bore site tool attached to the bottom of the collimator, loosen the collimator set screws (see following picture). Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 333 Calibration Collimator Set Screws Bore Sight Tool Collimator Adjusting Screws Adjustment of Collimator Centering Center the collimator in reference to the beam alignment tool using the collimator adjusting screws. When the collimator is centered properly, tighten the collimator set screws. Remove bore site tool.
Page 334 Calibration Camera Decentration Verify camera decentration as follows: Select the MAG1 mode. Rotate the CCD Camera to the full Counter clockwise position. X-ray through the beam alignment tool and mark the center of the alignment tool on the monitor with a small dot using an erasable marker.
Page 335 Calibration Mark made with the camera in the full CCW position. Verify that the center of the alignment tool does not deviate outside of the largest ring while rotating the camera to the full CW position. Verifying Camera Decentration Contents Installation Service Schematics...
Page 336 Calibration Rotate the camera another 90º clockwise (270ºfrom full counter clockwise) and make another exposure, mark the center of the beam alignment tool on the monitor as indicated on the following diagram. +90° CW +180° CW Mark Mark Rotational Center of the camera Full CCW Mark...
Page 337 Calibration Loosen but do not remove the following screws in the camera assembly: • 4 screws securing the Thermal Electric Cooling bar. • 3 screws securing the camera centering mechanism. • 1 screw securing the camera heat sink strap. Note: Do not loosen the 3 screws securing the camera to the back of the image tube.
Page 338 Calibration Screws securing the TEC cooling bar Screw securing the camera centering mechanism Screws securing the camera centering mechanism Screw securing the camera heat sink strap Screws securing the TEC cooling bar Loosen But Do Not Remove These Screws While making a Fluoro exposure adjust the camera decentration screws to align the rotational center of the camera to the center of the beam alignment tool as indicated in the following picture.
Page 339 Calibration Camera decentration adjusting screws Aligning the Camera Rotational Center Tighten the screws of step (i) above. Check the accuracy of the decentration adjustment by repeating above step 1, (a) through (d). Note: For adjustment of the camera centering relative to the circular mask, refer to Collimator/Camera Calibration section, later in this chapter.
Page 340 Calibration Collimator Alignment Verification 1. Attach the beam alignment tool to the image tube. 2. Fluoro in the Normal field, no collimator iris or leaves should be visible in the image. 3. Fluoro in Mag1 & Mag2, verify that no collimator iris or leaves are seen in the image 4.
Page 341 Calibration within .5 inches of each other. (If the preview circles and lines are not seen, or are more than .5 inches out of position, re- calibration of the collimator is required). Rotate the camera and verify that the camera rotation symbols appear and move properly during camera rotation. The image on the left monitor should automatically change to the new rotational setting when the camera rotation button is released.
Page 342 Calibration 14. Check the Show Circular Mask box on the form and disconnect the laptop. 17. Insert a film envelope into the Beam Alignment Tool. 18. Expose the film in the following collimator iris positions (see the following diagrams): • Normal field •...
Page 343 Calibration Collimator Iris may only be partially visible. Circular (1 or 2 leaves) Blanking Mag 1 Field Size Mag 1 Field Size Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 344 Calibration Collimator Iris may only Circular be partially visible. Blanking (1 or 2 leaves) Mag 2 Field Size Mag 2 Field Size 19. Develop the film. 20. Use the ruler marks that intersect the center of the flat portion of the collimator iris to determine the X & Y film diameters. Contents Installation Service...
Page 345 Calibration 21. Verify that the field diameters on the film are within the following tolerances: Mag Size 9 Image Intensifier Film 12 Image Intensifier Film Normal 222 MM diameter +/- 4 MM 296 MM diameter +0 MM -4 MM Mag1 150 MM diameter +0 MM -4 MM 222 MM diameter +0 MM -4 MM Mag2...
Page 346 Calibration Collimator / Camera Calibration Note: For pre-OPIS system software, use the RUT utility CD. Using RUT Attach the beam alignment tool to the image tube. Connect the RUT cable to the laptop and the back of the workstation. Run the RUT program. From the Tools pull down menu select Connect, then Upload and Save to save all data from the 9800 to the laptop.
Page 347 Calibration Using UtilitySuite Attach the beam alignment tool to the image tube Orient the tool on the image tube so that when the collimator iris is closed partially, the ruler marks on the tool intersect the flat portions of the collimator iris. Connect the utility cable to the laptop and the back of the workstation.
Page 348 Calibration 16. Select the File pull down menu, select Save, To System, and Both. The message YOU MUST REBOOT THE SYSTEM IN ORDER FOR THE SAVED DATA TO BE APPLIED TO THE SYSTEM will be displayed. 17. Click on Ok. Turn the 9800 system off, wait for about 10 seconds then turn the system back on. Camera Calibration Camera Cooler Verification Attach a DMM to the two solder pads on the TEC board on the camera (see following diagram).
Page 349 Calibration Camera Iris Note: For pre-OPIS system software, use the RUT utility CD. Iris Stop Verification Before verifying the camera iris setup, ensure that the collimator cover and image tube focus grid are in place on the system. Using RUT (or open UTILITY SUITE, go to RUT and connect), verify that the Generator Sync rate is to 30 Hz. and the Domestic ABS table is selected.
Page 350 Calibration Iris Stop Calibration Before verifying the camera iris setup, ensure that the collimator cover and image tube focus grid are in place on the system. Using RUT (or open UtilitySuite, go to RUT and connect), verify that the Generator Sync rate is to 30 Hz. and the Domestic ABS table is selected.
Page 351 Calibration While making an Auto Fluoro exposure in the Normal Magnification mode, move the iris gears to obtain image tube input doses according to the preceeding section. Without moving the position of the iris gears, swing the open iris stop up against the iris stop and tighten the set screw to 10 ounce-inches.
Page 352 Calibration Closed Iris stop set screw Iris Stop Closed Iris Stop Set Screw Lens Focus Focus Verification Attach a resolution tool to the face of the focus grid near the center at a 45º angle (see drawing, Beam Alignment section, previously in this chapter).
Page 353 Calibration II Size Minimum Resolution 9 Normal Field 2.3 LP/MM 9 Mag 1 3.2 LP/MM 9 Mag 2 3.8 LP/MM 12 Normal Field 1.7 LP/MM 12 Mag 1 2.3 LP/MM 12 Mag 2 3.0 LP/MM Focus Adjustment Attach a resolution tool to the face of the focus grid near the center at a 45º angle. Carefully loosen the Lens Focus Set Screw.
Page 354 Calibration Lens Focus Set Screw Lens Iris Focus Lever Lens Focus Set Screw and Iris Focus Lever Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 355 Calibration Monitor Setup Note: All adjustments to the monitors and light sensor should be performed only after the monitors have reached normal operating temperature. Usually a minimum of 1 hour is required. Monitor Size Note: For pre-OPIS system software, use the RUT utility CD. Verification Using RUT Connect the utility cable to the laptop and the back of the workstation.
Page 356 Calibration Select the File Pull down menu and select New then 9800. Select the Connect Pull down menu and System. When asked if you want the forms updated with data retrieved from the system, select Yes. As data is retrieved from the system, you will see the serial and barcode numbers for the system appear on the form.
Page 357 Calibration If the pattern centering needs adjustment use the X and Y Position Sliders to center the pattern on the monitor. To check the alignment of the right monitor. Click on the Right tab on the form and repeat the steps for the left monitor alignment.
Page 358 Calibration Minimum Light Settings Black Panel light level White Panel light level 0.70 to .085 Foot Lamberts 145 to 155 Foot Lamberts Carefully (see Note of step 5) select maximum light settings by clicking on one of the maximum brightness or contrast sliders. Using a light meter, verify that the black and white panels on the center of the monitor produce the following maximum light levels: Maximum Light Settings...
Page 359 Calibration Select the View Pull down menu and select RUT. Select the File Pull down menu and select New then 9800. Select the Connect pull down menu, and click on System. When asked if you want the forms updated with data retrieved from the system, select Yes.
Page 360 Calibration 14. To check the alignment of the right monitor Click on the Right tab on the form and repeat the steps for the left monitor alignment. 15. If changes are made in monitor brightness and contrast settings, save the changes to the system by selecting the File pull down menu, Save, then To System ,then Both.
Page 361 Calibration Light Source Control PCB Mounting Bracket Light Source Setup Light Source Verification Mount the Fostec Light Source Control PCB onto the connector labeled NOT RS232 at the rear of the Fostec Light Source. On the Fostec light source front panel, turn the aperture control to the number 5 position. Turn the brightness control knob to the remote (R) position, (CCW).
Page 362 Calibration Use the light meter to calibrate the output of the light source. Place the light meter sensor over the hole in the mounting bracket. (The light meter sensor must completely cover the hole in the bracket to prevent any additional light from leaking into the meter).
Page 363 Calibration Fostec Light Source Control PCB connector and mounting screws Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 364 Calibration Aperture Control Brightness Control Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 365 Calibration Light Source Calibration Move the switch on the light source control PCB to the LOW position (down). Turn on the light source and let it stabilize for about 10 seconds. Adjust R1 on the light source control PCB to obtain a reading of 1.7 Foot Lamberts +/-0.1 on the light meter. Move the switch on the light source control PCB to the HIGH position (up) and let it stabilize for about 10 seconds.
Page 366 Calibration Light Sensor Verification / Calibration Note: All adjustments to the monitors and light sensor should be performed only after the monitors have reached normal operating temperature. Usually a minimum of 1 hour is required. The following equipment is required to calibrate and verify the light sensor. •...
Page 367 Calibration Using the photometer, verify that the black and white areas on the left monitor are producing the following illumination levels. Simulated Minimum Light Settings Black Panel light level White Panel light level 0.70 to 0.85 Foot Lamberts 145 to 155 Foot Lamberts Simulated Maximum Light Settings Black Panel light level White Panel light level...
Page 368 Calibration Turn the 9800 system off, wait for about 10 seconds then turn the system back on. 10. Perform the light sensor verification test. Light Sensor Calibration Using Rut Note: For the following procedure, use the Utility Suite CD. Verify that the Fostec Light Source is properly adjusted. Place the light source holding bracket over the workstation light sensor.
Page 369 Calibration 12. Turn the 9800 system OFF, wait for about 10 seconds then turn the system back ON. 13. Perform the light sensor verification test. Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 370 Calibration Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 371: Table Of Contents
Replacement Replacement Equipment Covers ...................................4 Front Cover ....................................5 Right Side Cover ...................................6 Rear Cover ....................................7 Left Side Cover....................................10 Front Leg Cover ..................................11 X-ray Tube Connector Cover ..............................12 Collimator Cover..................................13 CCD Camera Cover ..................................14 Cross Arm Bearing Cover ................................15 Control Panels.....................................16 Circuit Breakers and Fuses................................17 Assemblies With No Breakers or Fuses ............................18 Capacitor/Power Module ................................19...
Page 372 Replacement Collimator ....................................50 Control Panel Processor PCB ..............................52 Control Panel Processor I/O PCB ...............................54 Fast Stop Switches..................................55 Filament Driver PCB..................................56 Fluoro Functions PCB .................................57 Generator Driver PCB .................................58 High Voltage and Control Cable Assembly ..........................59 High Voltage Supply Regulator PCB............................63 High Voltage Tank..................................64 IGBT Snubber PCB ..................................69 Image Intensifier and Power Supply............................72...
Page 373 Replacement Orbital Brake .....................................111 Power Panel Assembly ................................112 Rear Wheels and Brakes ................................113 Roller Bearing Assembly ................................115 Vertical Column ..................................116 Wig Wag Brake ..................................119 Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 374: Equipment Covers
Replacement WARNING: Please read each replacement procedure completely and make sure you understand all associated safety messages before attempting to do the work. Failure to observe safety precautions may result in death, personal injury, or equipment damage. Note: Refer to the C-arm Subsystem chapter of this manual if you need help locating a C-Arm component. Equipment Covers WARNING: Exposed C-Arm circuitry is extremely dangerous EVEN WHEN SYSTEM IS NOT CONNECTED TO AN AC OUTLET.
Page 375: Front Cover
Replacement You must remove generator covers in the following sequence: Front cover Right side cover Rear cover Left side cover Front leg cover You can remove the Cross Arm Bearing cover, X-ray Tube connector cover, and CCD Camera cover in any order. You cannot remove the Collimator cover until the X-ray Tube Connector cover is off.
Page 376: Right Side Cover
Replacement Front Cover Right Side Cover WARNING: Disconnect Workstation from AC line and disconnect battery pack from C-Arm before discharging high energy electrolytic capacitors. Failure to heed this message may result in death, personal injury, or severe equipment damage. Contents Installation Service Schematics...
Page 377: Rear Cover
Replacement WARNING: Removing right side cover exposes extremely dangerous voltages on Capacitor/Power module. Charges on capacitors can remain at lethal levels long after you unplug system from AC line. Unplug Workstation from AC line, and discharge capacitors in accordance with following instructions before touching any circuitry. You must remove the right side cover before you can remove the rear cover, left side cover, or front leg cover.
Page 378 Replacement The rear cover protects most of the C-Arm electronics, so it will probably be the cover you remove most often. You must remove the rear cover before you can remove the left side cover or front leg cover. Follow these steps: Front Cover Three Mounting Screws Right Side Cover...
Page 379 Replacement Remove Front cover and Right Side cover. Using great care to avoid electric shock, make certain there is no residual charge on high energy electrolytic capacitors. If you have not already done so, use a VOM to check voltage on capacitor bus bars. If any charge is present, connect a 300k, half-watt resistor across capacitor bus bars and let capacitors discharge.
Page 380: Left Side Cover
Replacement Left Side Cover WARNING: Removing the left side cover exposes dangerous AC line voltages on the Power/Signal Interface PCB, Power Supply PS1, Power Supply PS2, Column Power Supply PS3, power transformers T2 and T3, and motor start capacitor C5 and motor phase-shifting capacitor C13.
Page 381: Front Leg Cover
Replacement Left Side Cover Front Leg Cover The front leg cover does not protect any exposed circuitry and does not block access to any mechanical assemblies. However, it does protect wiring that runs between the Vertical Column Lift and other C-Arm circuitry. It is unlikely you will ever have to remove the cover unless it is physically damaged, or you must replace the Front Casters orVertical Column Lift.
Page 382: X-Ray Tube Connector Cover
Replacement Remove front cover, right side cover, rear cover, and left side cover as described in previous screens. Remove and retain eight screws that secure front leg cover to generator. Lift front leg cover away from generator. Front Leg Cover Details X-ray Tube Connector Cover The X-ray tube connector cover protects the high voltage, stator, temperature sensor and thermal cutout cables, and other terminals on the X-ray tube.
Page 383: Collimator Cover
Replacement X-ray Tube Connector Cover Collimator Cover The Collimator cover is easy to remove. Follow these steps: Make certain Workstation’s AC power plug is disconnected from AC outlet. Remove X-ray tube connector cover as described in previous screen. Remove and retain two torx screws that secure Collimator cover. Slide Collimator cover forward and lift it off Collimator.
Page 384: Ccd Camera Cover
Replacement Collimator Cover Details CCD Camera Cover CAUTION: Don’t touch the CCD camera unless you’re wearing a grounded wrist strap. Damage to camera circuitry from electrostatic discharge may otherwise occur. Two screws hold the CCD camera cover in place (see CCD Camera and Cover section, later in this chapter). The location of these screws varies depending on image intensifier size.
Page 385: Cross Arm Bearing Cover
Replacement Cross Arm Bearing Cover Note: If you decide to completely remove the Cross Arm Bearing cover from the Cross Arm assembly, tag each connector and wire harness to help you reinstall the cover later. This procedure describes how to loosen the Cross Arm bearing cover to gain access to the Control Panel Processor PCB, Control Panel Processor I/O PCB, the Cross Arm Bearing assembly, and the mounting screws for the two Control Panel assemblies.
Page 386: Control Panels
Replacement Being careful not to damage any switch or indicator terminals, set bearing cover across Cross Arm with switches and indicators facing up. To completely remove Cross Arm Bearing cover, loosen it as described above, then tag and disconnect each cable harness. Lift Cover Straight Up Remove...
Page 387: Circuit Breakers And Fuses
Replacement Carefully pull Control Panel away from Vertical Column. Disconnect and tag all wires. Note: Display and Keypad in Control Panel are held in place by screws and are both field replaceable Use Loctite 454 and accelerator when reassembling. Remove six screws (Three on each side of panel) Control Panel Cover Circuit Breakers and Fuses...
Page 388: Assemblies With No Breakers Or Fuses
Replacement Assemblies With No Breakers or Fuses There are no field replaceable circuit breakers or fuses in the following assemblies: C-Arm Assemblies That Contain No Field Replaceable Fuses or Circuit Breakers Backplane (879364) Generator Driver PCB (878908) Battery Charger (880306) Handswitch (901144) Battery Packs (900589) Heat Pipe (879557 or 880717)
Page 389: Capacitor/Power Module
Replacement Capacitor/Power Module WARNING: Touching the Capacitor/Power Module is very dangerous because of the high voltages present on the battery cables and high voltages on the capacitor bus bars. The Capacitor/Power Module is also dangerously close to the High Voltage Tank and High Voltage cables.
Page 390 Replacement Remove Capacitor/Power Module to Access Circuit Breaker CB1 You cannot normally see CB1 without using a mirror because it is located on the bottom of the Capacitor/Power Module an inch or so off the floor. You can locate and operate CB1 by feeling underneath the Capacitor/Power Module. Open the breaker by positioning the handle toward the rear of the C-Arm.
Page 391 Replacement CB1 protects the battery packs from overload conditions such as a shorted high-energy capacitor or a short across the capacitor bus bars. Replace CB1 if it continually trips without identifiable cause, or if it cannot be reset. Follow these steps to replace CB1: Disconnect Workstation power plug from AC outlet.
Page 392: Fuses F1, F2, And F4
Replacement Fuses F1, F2, and F4 The three Capacitor/Power Module fuses F1, F2, and F3 are 250-Volt, 1/4 by 1-1/4 inch, fast blow glass cartridge types. You can examine any of these fuses by unscrewing the appropriate fuse cap and withdrawing the suspect fuse. Fuses F1, F2, and F4 Always use an ohmmeter to check a fuse for continuity.
Page 393 Replacement Circuit Breaker CB2 CB2 is a 1-Amp breaker that protects the XFMR_115VAC line to Stator Transformer T3. Use the following procedure to replace CB2: Disconnect Workstation power plug from AC source. Remove C-Arm's Left Side cover. Remove attaching hardware that secures CB2 to Stator Capacitor/Transformer module. Retain attaching hardware for reuse.
Page 394: Power Motor Relay Pcb
Replacement Connect Workstation power cord to AC outlet. Power up system and check for proper operation. Power Motor Relay PCB Refer to the following illustration and table for information on circuit breakers and fuses on the Power Motor Relay PCB, which is located under the C-Arm's front cover.
Page 395 Replacement Power Motor Relay PCB Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 396 Replacement Note: All fuses listed in the following table are field replaceable 250-Volt, 1/4 x 1-1/4-inch, tubular Slo Blo unless otherwise indicated. Power Motor Relay PCB Fuses Ref Des Capacity Part Number Purpose 55-700463-00 SPST 250 VAC PC-mounted breaker. NOT FIELD REPLACEABLE. Trips if stator circuit sticks in 120 VAC (start) mode longer than 15 seconds.
Page 397: Power Signal Interface Pcb
Replacement Power Signal Interface PCB Many of the field replaceable fuses associated with C-Arm circuitry reside on the Power Signal Interface PCB. Refer to the following illustration and table for details. WARNING: Don't replace any fuse on the Power Signal Interface PCB without first powering down the system.
Page 398 Replacement Power Signal Interface PCB Note: All fuses listed in the following table are 250-Volt 5 x 20mm (¼ x1¼ inch) tubular Slo Blo unless otherwise indicated. Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 399 Replacement Power Signal Interface PCB Fuses Ref Des Capacity Part Number Purpose 3.15A 55-500345-00 Protects the 115VAC_RTN_MTR line from F2 to Power Supply PS1 (P4-11). This fuse also protects the 115VAC_RTN_MTR line that goes to Power Supply PS2 (P9-14). 55-500346-00 Protects the 115VAC_RTN line (P5-1) that supplies AC power from the Workstation (P5-1) to the Power/Motor Relay PCB (P8-4, 5, 12, and 13).
Page 400 Replacement Power Signal Interface PCB Fuses Ref Des Capacity Part Number Purpose 2.0A 55-500344-00 Protects the 115VAC_PH_PS2 line (P9-7) that supplies AC power from fuse F6 to Power Supply PS2. 3.15A 55-500345-00 Protects the +24V_PS2 line (P9-12) from Power Supply PS2. This line supplies +24 Volts to the Power/Motor Relay PCB (P8-8).
Page 401: Power Supply Ps1
Replacement Power Supply PS1 Power Supply PS1 has only one field replaceable fuse, which appears in the following illustration. Fuse F1 on Power Supply PS1 Fuse F1 is a 3.15 Amp fast blow fuse that protects PS1’s internal circuitry only. F1 does not blow if PS1’s outputs are shorted or overloaded.
Page 402: Power Supply Ps2
Replacement Power Supply PS2 Power Supply PS2 has one field replaceable fuse as shown in the following illustration. Fuse F1 on Power Supply PS2 F1 is a 1.0 Amp fuse that protects the primary winding on externally mounted power transformer T2. Contents Installation Service...
Page 403: Important Safety Message
Replacement Important Safety Message DANGER: Read the following information carefully. Failure to do so could result in death, personal injury, or equipment damage. Note: The following information does not apply to the Super C, which does not have an L-Arm. A gas-shock-dampened spring regulates L-Arm rotational movement in a Standard nine-inch or 12-inch system.
Page 404 Replacement C-Arm Safety Bolt Remove the suspect Image Intensifier or X-ray tube. Install the replacement Image Intensifier or X-ray tube. Remove and stow the safety bolt. Check the C-Arm for proper operation and return it to service. Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 405: Electrical And Electronic Assemblies
Replacement Electrical and Electronic Assemblies This section provides replacement procedures for most electrical and electronic assemblies in the C-Arm. Backplane The Backplane mounts at the rear of the C-Arm card rack, where it provides an edge connector for the Fluoro Functions PCB, X- ray Controller PCB, and High Voltage Supply Regulator PCB.
Page 406 Replacement Follow these steps to replace the Backplane: Turn off Workstation power and disconnect Workstation’s AC plug from facility’s AC outlet. Remove C-Arm’s Rear Cover. Remove card rack’s rear metal cover to expose PCBs inside rack. Retain screws. Remove all three circuit card assemblies from card rack. Note position of each PCB. Tag and unplug all connectors and ground wires from Backplane assembly.
Page 407: Battery Charger
Replacement Battery Charger The Battery Charger PCB mounts at the rear of the C-Arm under the Rear Cover and Component Tray Cover as shown in the following illustration. The following procedure explains how to replace the Battery Charger. Battery Charger PCB Turn off Workstation and remove Workstation’s AC plug from facility outlet.
Page 408 Replacement Remove three nuts that secure Battery Charger heat sink to C-Arm chassis. Retain nuts. Carefully lift Battery Charger PCB from studs that support heatsink. Inspect replacement Battery Charger PCB for missing components or obvious damage. Install replacement Battery Charger PCB onto mounting studs. 10.
Page 409: Battery Charger Indicator Lamp
Replacement Battery Charger Indicator Lamp The Battery Charger Indicator Lamp shown below is located on the C-Arm Power Panel near the Keyswitch. This is a 120 VAC neon lamp that glows any time AC power is applied to the C-Arm through the Interconnect Cable. Battery Charger Indicator Lamp Use the following procedure to replace the lamp.
Page 410 Replacement Open Power Panel Open cover to access Power Panel Interior. Disconnect the two spade connectors from the neon lamp assembly. Use flat-bladed screwdriver to gently pry off metal ring that secures lamp assembly to Power Panel. Refer to the following illustration for additional details.
Page 411: Battery Packs
Replacement Battery Packs The two identical Battery Packs mount in cavities at the base of the C-Arm as shown below: Battery Packs Follow this procedure to replace the Battery Packs: Power down the system and remove the Workstation’s power plug from the facility’s AC outlet. Disconnect black Battery Pack wire terminal from P1A on the Capacitor/Power module.
Page 412 Replacement Lifting it slightly, withdraw the left Battery Pack from its battery compartment. Remove the right Battery Pack in a similar manner. Inspect each replacement Battery Pack for missing components or obvious damage. Connect a temporary four-foot length of non-conductive fish tape to the wires on each replacement Battery Pack. 10.
Page 413: Capacitor/Power Module
Replacement Capacitor/Power Module The Capacitor/Power Module mounts in the front of and above the battery tray next to the High Voltage Tank as shown in the following illustration. Cap/Power Module Capacitor/Power Module Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 414 Replacement Use the following procedure to replace the Capacitor/Power Module: WARNING: Touching the Capacitor/Power Module is very dangerous because of the high voltages present on the battery cables and high voltages on the capacitor bus bars. The Capacitor/Power Module is also dangerously close to the High Voltage Tank and High Voltage cables, which are also a source of high voltage.
Page 415 Replacement Busbars on Capacitor/Power Module Disconnect multi-pin plug P4 from J4. Free all wiring from cable restraints on the Capacitor/Power module and move the wiring out of the way. 10. Disconnect busbar wiring from connectors on IGBT Snubber PCB. Be careful not to damage heat shrink on positive busbar. Contents Installation Service...
Page 416 Replacement Capacitor/Power Module Connectors Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 417: Ccd Camera And Cooler
Replacement 11. Remove the single screw at the top of the Capacitor/Power module that secures it to the Vertical Column. Capacitor/Power Module Mounting Screw 12. Remove the Capacitor/Power Module from the C-Arm. CCD Camera and Cooler The CCD camera mounts on the output phosphor end of the Image Intensifier as shown in the following illustrations. Follow these steps to replace the CCD Camera assembly: Turn off Workstation and disconnect it from the AC outlet.
Page 418 Replacement Camera Cover EMI Shield CCD Camera Image Intensifier CCD Camera Location Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 419 Replacement EMI Shield Removal Lift the EMI Shield up and disconnect the wires that run from the EMI Shield to the Camera. Remove four screws that secure Thermoelectric Cooler to camera. Screws appear in next illustration. Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 420: Collimator
Replacement Thermoelectric Cooler Mounting Screws Remove three screws (black mount) that secure CCD Camera. Reassemble in reverse order and check Camera alignment. Collimator The Collimator mounts over the X-ray tube aperture as shown in the following illustration. Follow these steps to replace the Collimator: Turn off Workstation power switch in the OFF position.
Page 421 Replacement Remove four screws that secure the Collimator and remove the Collimator. Reassemble in reverse order. Check the beam alignment and adjust Z and X axis of the Collimator if necessary. Collimator Cover Collimator Collimator Location Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 422: Control Panel Processor Pcb
Replacement Control Panel Processor PCB The Control Panel Processor resides under the Cross Arm Bearing cover as shown next. Follow these steps to remove the Control Panel Processor PCB: Turn off the Workstation and unplug it from the AC outlet. Remove Cross Arm Bearing cover as described in the Equipment Covers section of this chapter.
Page 423 Replacement Control Panel Processor PCB Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 424: Control Panel Processor I/O Pcb
Replacement Control Panel Processor I/O PCB +12V CONTROL PANEL PROCESSOR I/O OEC MEDICAL SYSTEMS INC. ASSY 00-878491 Control Panel Processor I/O PCB Follow these steps to replace the Control Panel Processor I/O PCB: Turn off Workstation and disconnect its power plug from the AC outlet.
Page 425: Fast Stop Switches
Replacement Fast Stop Switches Cross Arm Cross Arm Side Cover Bearing Cover Fast Stop Switches (1 each side) Fast Stop Switches Follow these steps to replace a suspect Fast Stop switch. Turn Workstation off and disconnect its AC power plug from the AC outlet. Remove Cross Arm Bearing cover as described in the Equipment Covers section of this chapter.
Page 426: Filament Driver Pcb
Replacement Filament Driver PCB The Filament Driver PCB mounts on top of the IGBT Snubber PCB next to the Generator Driver PCB as shown in the following illustration. Filament Driver Filament Driver PCB Location Follow these steps to replace the Filament Driver PCB: WARNING: Dangerous voltages are present when covers are removed from the C-Arm.
Page 427: Fluoro Functions Pcb
Replacement Remove the seven screws that secure the Generator Driver Cover and remove the cover. Disconnect the cabling from the Filament Driver PCB. Remove two screws from the Filament Driver heat sink. Remove the Filament Driver PCB. Fluoro Functions PCB The Fluoro Functions PCB is the left-most PCB in the card rack assembly, which is located in the upper left-hand corner of the C- Arm chassis.
Page 428: Generator Driver Pcb
Replacement Follow these steps to replace the Fluoro Functions PCB: Place the Workstation power switch in the OFF position and disconnect the Workstation's AC power cord from the AC outlet. Remove the Rear Cover and disconnect the steering linkage. Remove four screws that secure metal cover to the Electronic Card Rack. Remove the Fluoro Functions PCB from the slot located to the far left in the Electronic Card Rack.
Page 429: High Voltage And Control Cable Assembly
Replacement Follow the steps below to replace the Generator Driver PCB WARNING: Dangerous voltages are present when covers are removed from the C-Arm. Place the Workstation power switch in the OFF position and disconnect Workstation's AC power plug from AC outlet. Remove the Rear Cover and disconnect the steering linkage.
Page 430 High Voltage and Control Cable Assembly The High Voltage and Control Cable (GE OEC Part Number 901141) is a complex wiring assembly that contains many conductors, including the thick, highly insulated positive and negative cables that carry high voltage from the High Voltage tank to the X-ray tube.
Page 431 Replacement High Voltage and Control Cable Signals Runs Purpose From Assembly Connector Assembly Connector A1P8 Backplane Camera Communications Camera (Manchester serial) A11J7 Power/Signal Power to Camera Interface Camera A4J5 Power/Motor X-ray Tube Stator Run Voltages Relay PCB Camera Interconnect Video to Workstation Cable Connector Camera...
Page 432 Replacement Runs Purpose From Assembly Connector Assembly Connector A4J11 Power/Motor Fan B3 12 VDC power to fan in C-Arm. Relay PCB A1P8 Backplane A14J7 Image Field size selection signal to II. Intensifier A1P8 Backplane TEC power; camera position and Camera movement signals Use the above table to thoroughly troubleshoot the High Voltage and Control Cable assembly before replacing it.
Page 433: High Voltage Supply Regulator Pcb
Replacement Insert the replacement cable's strain relief into the Generator chassis and tighten the setscrews. 10. Install all connectors on the Generator end of the cable and inspect your work. Be especially careful that the high voltage cables connect properly to the High Voltage Tank. 11.
Page 434: High Voltage Tank
Replacement High Voltage Supply Regulator High Voltage Supply Regulator PCB Location High Voltage Tank The High Voltage Tank mounts above the batteries and is surrounded by electronic components as shown in the following illustration. Use the following procedure to replace the High Voltage Tank: WARNING: Dangerous voltages are present at many points on the C-Arm.
Page 435 Replacement Turn off Workstation and disconnect its plug from the AC outlet. Remove all C-Arm covers. Disconnect steering linkage. USING GREAT CARE TO AVOID ELECTRIC SHOCK, disconnect battery cables from P1A and P3B on Capacitor/Power module. (Refer to Capacitor/Power module replacement procedure in this chapter for details.) High Voltage Tank...
Page 436 Replacement Locate two battery cables just above P1A and P3B. These two cables have blue connectors that connect to each other. USING GREAT CARE TO AVOID ELECTRIC SHOCK, disconnect the cables from each other. USING GREAT CARE TO AVOID ELECTRIC SHOCK, connect a current-limiting resistor (300k or so) across Capacitor/Power module busbars to discharge high energy capacitors inside Capacitor/Power module.
Page 437 Replacement 16. Remove two hex socket screws and associated washers that secure right-hand side of High Voltage tank to C-Arm chassis. High Voltage Tank Fasteners - Right Side Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 438 Replacement 17 Taking care not to disconnect or damage transformer oil expansion tank or hose, move High Voltage Tank to the right and lift it carefully from the C-Arm chassis. High Voltage Tank Removal Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 439: Igbt Snubber Pcb
Replacement IGBT Snubber PCB The IGBT Snubber PCB is located on top of the High VoltageTank and underneath the Filament Driver PCB as shown in the following illustration. Its heat sink attaches to the High Voltage Tank. IGBT Snubber IGBT Snubber Location Use the following procedure to replace the IGBT Snubber: WARNING: Dangerous voltages are present when covers are removed from the C-Arm.
Page 440 Replacement Turn the Workstation off and remove its power plug from the AC outlet. Remove the C-Arm's Rear Cover and disconnect the steering linkage. USING GREAT CARE TO AVOID ELECTRIC SHOCK, disconnect battery cables from P1A and P3B on Capacitor/Power module.
Page 441 Replacement Note: When connecting the replacement snubber assembly to the tuned circuit, ensure that the lead wires exiting the snubber face each other LIKE THIS: To Tuned Circuit AND NOT LIKE THIS: To Tuned Circuit Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 442: Image Intensifier And Power Supply
Replacement Image Intensifier and Power Supply The Image Intensifier and its DC power supply mount on the C weldment opposite the X-ray tube as shown in the following illustration. Camera Cover EMI Shield CCD Camera Image Intensifier Image Intensifier Location Follow these steps to replace the Image Intensifier assembly.
Page 443 Replacement Position the C in a horizontal position with the Image Intensifier furthest from the C-Arm chassis. Lock the C-Arm brake. WARNING: Failure to install the C-Arm Safety Bolt may allow the gas spring to rotate the L-Arm very quickly and very forcefully when you remove the Image Intensifier. This could result in serious injury or equipment damage.
Page 444: Keyswitch
Replacement Keyswitch The Keyswitch is located on the C-Arm's Power Panel as shown below. It is readily accessible for testing or replacement. Keyswitch Battery Charger Indicator Lamp Handswitch Connector Footswitch Connector Keyswitch Follow these steps to replace the Keyswitch: Remove the Front Cover. Remove the Right Side Cover.
Page 445: Power Motor Relay Pcb
Replacement Access the Power Panel Interior. Trace the Keyswitch cable from the Keyswitch to the connector and disconnect the cable plug. Remove the retaining nut from the Keyswitch. 10. Remove the Keyswitch from the front of the Power Panel. 11. Reassemble in reverse order mounting the Keyswitch so that the key’s teeth face down when the key is in the Standby position.
Page 446: Power Signal Interface Pcb
Replacement Follow these steps to replace the Power/Motor Relay PCB: Turn the Workstation off and disconnect its power plug from the AC outlet. Remove the Front Cover by lifting the rubber gasket that surrounds the Vertical Column and removing two screws from each side.
Page 447 Replacement Use the following procedure to replace the Power/Signal Interface PCB: Turn off Workstation and disconnect its AC power plug from facility’s AC outlet. Remove Left Side Cover from C-Arm. Remove four screws and associated hardware that attach Power/Signal Interface PCB to C-Arm chassis. Retain hardware for reuse.
Page 448: Power Supply Ps1
Replacement Power Supply PS1 Power Supply PS1 mounts under the Left Side Cover as shown in the next illustration. For detailed access information, refer to the Overview section of this manual. Power Supply PS1 Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 449 Replacement WARNING Heat sinks on PS1 are at AC line potential. WARNING: Dangerous AC line voltage is present on J1/P1. Follow these steps to replace PS1: Turn off Workstation and disconnect Workstation’s AC power plug from AC outlet. Remove Left Side Cover. Remove and retain two torx screws that secure swing-out panel to left-hand side of C-Arm chassis.
Page 450: Power Supply Ps2
Replacement Power Supply PS2 PS2 mounts under the Left Side Cover as shown in the next illustration. Multi-Output Power Supply PS2 Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 451 Replacement Follow these steps to replace PS2: WARNING: Dangerous AC line voltage is present on J2/P2 and J3/P3. Turn off Workstation and disconnect Workstation’s AC power plug from AC outlet. Remove Left Side Cover. Remove Component Tray Cover. On PS2, disconnect J1 from P1, J2 from P2, and J3 from P3. Remove and retain two torx screws that secure PS2 and its heat sink to C-Arm chassis.
Page 452: Power Supply Ps3
Replacement Power Supply PS3 PS3 mounts on the left-hand side of the C-Arm chassis under the Left Side Cover and Component Tray Cover. It has no external controls and only three connectors. Follow these steps to replace PS3: WARNING: Dangerous AC line voltage is present on PS3’s POWER connector. Turn off Workstation and disconnect its AC power plug from AC outlet.
Page 453 Replacement Power Supply PS3 Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 454: Stator Capacitor/Transformer Assembly
Replacement Stator Capacitor/Transformer Assembly The Stator Capacitor/Transformer Assembly mounts on the left-hand side of the C-Arm, where it serves as a mounting point for the Stator start and run capacitors, the Stator/precharge transformer (T3, located on top of the assembly), CB2, which protects T3, and T2, which mounts out of sight on the bottom side of the assembly and supplies AC power to multi-output power supply PS2.
Page 455: Vertical Column Lift Switches
Replacement Vertical Column Lift Switches The two Verical Column Lift switches are each part of a replaceable cable assembly. Each cable assembly mounts in the Cross Arm Bearing cover as shown next. The following procedure describes how to replace either Vertical Column movement switch assembly. Turn off Workstation and remove its power plug from facility's AC outlet.
Page 456 Replacement Verticle Column Lift Switches Cross Arm Bearing Cover Vertical Column Lift Switches Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 457: X-Ray Controller Pcb
Replacement X-ray Controller PCB The X-ray Controller PCB mounts in the Electronic Card Rack as shown next. WARNING: Dangerous voltages are present when covers are removed from the C-Arm. Follow these steps to replace the X-ray Controller PCB: Turn off Workstation and remove its power plug from facility's AC outlet. Remove the Rear Cover and disconnect the steering linkage.
Page 458 Replacement X-ray Controller X-ray Controller PCB Location Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 459: X-Ray On Pushbutton
Replacement X-ray On Pushbutton The X-ray On pushbutton is part of a replaceable cable assembly that mounts in the Cross Arm Bearing cover as shown next. The following procedure describes how to replace the X-ray On Pushbutton.assembly. Turn off Workstation and remove its power plug from facility's AC outlet. Remove Cross Arm Bearing Cover as described elsewhere in this chapter.
Page 460 Replacement X-ray On Switch Cross Arm Bearing Cover X-ray On Pushbutton Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 461: X-Ray Tube
Replacement X-ray Tube The X-ray tube mounts on the C-Arm opposite the Image Intensifier. The following illustration shows a view of the tube and High Voltage cables. X-ray Tube Assembly WARNING: Failure to install the C-Arm Safety Bolt may allow the gas spring to rotate the L-Arm very quickly and very forcefully when you remove the X-ray Tube.
Page 462 Replacement WARNING Lethal high voltage is present on the X-ray tube and high voltage cables, even when system is turned off. Be sure to turn system off and carefully discharge high voltage from cables before working near X-ray tube or cables. Follow these steps to remove the X-ray tube: Turn off Workstation and remove its power plug from facility's AC outlet.
Page 463 Replacement USING GREAT CARE TO AVOID ELECTRIC SHOCK, use spanner wrench to disconnect Anode cable from X-ray tube and immediately discharge cable to ground through an appropriate current-limiting resistance. USING GREAT CARE TO AVOID ELECTRIC SHOCK, use spanner wrench to disconnect Cathode cable from X-ray tube and immediately discharge cable to ground through an appropriate current-limiting resistance.
Page 464: Mechanical Assemblies
Replacement Mechanical Assemblies The following paragraphs describe field replacement of certain C-Arm mechanical assemblies. Cable Pushers The following illustration shows one rear caster Cable Pusher: Follow these steps to remove a Cable Pusher or Wheel: Remove two screws from the End Cap cover and remove the End Cap. Remove the decals from each side of the Wheel assembly.
Page 465 Replacement Brake Pedal Actuator Shaft Wheel Brake Cam Rear Caster & Wheel Cable Pusher Cable Pusher Assembly Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 466: C Removal
Replacement C Removal The "C" is the C-shaped weldment that supports the X-ray tube and Collimator on one end and the Image Intensifier and CCD camera on the other end. Removing the C is a simple task but some heavy lifting is involved. Follow these steps: WARNING: Failure to install the C-Arm Safety Bolt may allow the gas spring to rotate the L-Arm very quickly and very forcefully when you remove the C from the end of the L-Arm.
Page 467: Cross-Arm
Replacement Cross-Arm Note: The following procedure does not separate the Flip Flop assembly or L-arm assembly from the Cross Arm. Turn off Workstation and disconnect its power plug from facility's AC outlet. Remove the "C" from the Flip Flop assembly as described elsewhere in this chapter. Remove the mechanical stop (hex bolt ) from the Cross-Arm as shown next.
Page 468 Replacement Note: The C-arm will tip backwards onto the balance wheel when you remove the Cross Arm in the following step. This is normal. Grasp L-Arm handle and pull Cross-Arm out of the Cross-Arm Bearing Block assembly as shown below. Cross Arm Removal Contents Installation...
Page 469: Cross-Arm Bearing Block
Replacement Cross-Arm Bearing Block Turn off Workstation and disconnect its power plug from the AC outlet. Remove C from Flip Flop assembly. Follow procedure provided in this chapter. Remove Cross Arm Bearing cover. Follower procedure provided in this chapter. Remove Cross Arm from Cross Arm Bearing Block by following procedure in this chapter. Remove six screws that secure the Control Panel Processor and Control Panel I/O PCBs to bearing block and remove both PCBs as an assembly.
Page 470 Replacement Remove four screws that secure bottom half of Control Panel Bearing Block cover to bearing block.. Lower the bottom half of the Control Panel Bearing Block Cover. Cut all wiring tie wraps, noting wire locations and routing. Tagging the wires and connectors will be helpful in reassembly. 10.
Page 471 Replacement Lifting Bearing Block from Vertical Column Note: To remove a bearing from the Bearing Block: (a) Loosen the corresponding set screw that secures the shaft. The set screw is recessed into the Bearing Block and secures the shaft in place. Each bearing assembly has 1 set screw. (b) Remove the retaining rings from both sides of each bearing and pull the shaft out.
Page 472: Cross Arm Brake
Replacement Cross Arm Brake The following illustration shows the Cross Arm brake assembly. Setting the Cross Arm brake engages a brake pad that restricts the movement of a bearing in the Cross Arm housing. This prevents the Cross Arm from moving. Brake Pad Cam Follower Brake Mount...
Page 473: Flip Flop
Replacement Remove the Cross-Arm Brake Pad. Flip Flop For disassembly of the Flip Flop rotation assembly and brake, refer to the L-arm section of this chapter. Front Casters The following procedure explains how to replace the Front Casters. The two Front Caster wheels mount on a plate that is located under the Front Leg cover. The following illustration shows the casters with the cover removed and the decals off the axle screws.
Page 474 Replacement Front Caster To replace a caster wheel: Jack the mounting plate edge nearest the damaged wheel. Get the wheel about half an inch off floor. Carefully remove the adhesive cover that conceals the axle screw. Retain the cover for reuse. Use a hex key to loosen the axle.
Page 475: Generator Tray
Replacement To replace caster parts other than wheels or cable pushers, you must replace the entire Front Caster assembly. Remove the four hex keyed bolts shown in the above illustration and install a new Front Caster assembly. Refer to the Illustrated parts manual for the current part number.
Page 476: L-Arm And L-Rotation Assembly
Replacement L-Arm and L-rotation Assembly To separate the L-Arm from the Cross Arm, perform the following (see applicable pictures following): WARNING: Verify that the L-Arm Gas Spring locking bolt is inserted. Failure to disable the L-Arm may result in the gas spring spinning the L-Arm or Cross-Arm. This could result in serious personal injury.
Page 477 Replacement Handle Handle Insert O-Ring Handle Retaining Ring Actuator Actuator O-Ring Handle Insert L-Arm Brake Shaft Retaining Ring Handle (Lower handle assembly is Spherical the same as upper handles) Adjustment Standard C-arm (sheet 1) Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 478 Replacement Label Cross-Arm Slider Stop Bearing Ring Bearing Cover Lock Bearing Washer Brake Drum Bearing Lock Brake Shoe Spring Label Cross-Arm Shaft Spring Spring Dowel Pin Brake Bearing Shoe Bearing Standard C-arm (sheet 2) Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 479 Replacement Brake Shaft O-Ring Handle Actuator Insert Dowel Drag Adjustment Retaining Screw Ring Handle Super-C (sheet 1) Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 480 Replacement Cross Arm Label Dowel Pin Stop Plate Spacer Spring Pin Lock Nut Brake Shoe Lock Washer Bearing Bearing Bearing Bearing Pivot Shaft Super-C (sheet 2) Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 481: Orbital Brake
Replacement Orbital Brake This section describes the replaceable components associated with the Orbital Brake. The following illustration is an exploded view of the C-Arm’s Orbital Brake assembly. Friction Clutch Roller Yoke Brake Pad Brake Brake Arm Roller Spring Washers Brake Pivot Brake Shaft Cylinder Bearing Brake Cam...
Page 482: Power Panel Assembly
Replacement Replace the Brake Pad. Power Panel Assembly Remove eigh screws that secure the L-shaped Generator Tray cover. Disconnect all wires, plugs, twist-on connectors, sub-D, etc. Disconnect E1 and E2 terminals from the H.V. Tank. Disconnect wire terminals from the H.V. Capacitors. Separate the cables between the Power Panel Interface PCB and the Generator Tray.
Page 483: Rear Wheels And Brakes
Replacement Power Panel Removal Rear Wheels and Brakes To remove the Rear Wheel Assembly perform the following: Remove two screws from the End Cap Cover and remove the End Cap. Jack up the Wheel Axle approximately 2 - 2.5 inches. Loosen one of the turnbuckles on the steering chain.
Page 484 Replacement Steering Chain Turnbuckles (View from Underneath Axle) Remove the chain from around the Wheel’s sprocket. Remove the Allen screw that secures caster to axle. Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 485: Roller Bearing Assembly
Replacement Allen Screw Removal Remove the caster from the axle. Roller Bearing Assembly The following paragraphs describe how to remove a Roller Bearing Assembly, which is part of the Flip Flop Assembly. The Axial or Radial Roller Bearings are replaced as a part of the Roller Bearing Assembly. The assembly can be replaced after the C-arm has been separated from the Flip-Flop Assembly.
Page 486: Vertical Column
Replacement Remove the Roller Bearing Assembly. Roller Bearing Assembly Toggle Arm Pivot Shaft Roller Bearing Assembly Removal Vertical Column Note: You must remove all assemblies that surround the Vertical Column and all assemblies that mount on top of the Vertical Column before you can remove the Vertical Column itself.
Page 487 Replacement C-Arm Frame Stood on End Remove the four hex keyed bolts that secure the Vertical Column to the C-Arm Frame. Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 488 Replacement Removing Vertical Column Mounting Bolts Separate the Vertical Column from the Frame and lay the Vertical Column on the floor. Lay the Frame down also. Vertical Column Assembly Contents Installation Service Schematics Periodic Maintenance Illustrated Parts...
Page 489: Wig Wag Brake
Replacement Wig Wag Brake The following illustration shows the Wig Wag brake assembly. Bearing Block Cover Cross-arm Brake Handle Fixed Plate Dowel Pin Brake Pad Floating Plate O-ring Brake Actuator Wig Wag Brake Handle Bearing Block Lower Cover Wig Wag Brake Assembly To replace the Wig Wag Brake pad it will be necessary to remove the Bearing Block.
Page 490 Replacement Go to the point in this document that describes how to remove the Control Panel Assemblies. WARNING: Verify that the L-Arm Gas Spring locking bolt is inserted. Failure to disable the L-Arm may result in the gas spring spinning the L-Arm or Cross Arm. This could result in serious personal injury.

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