OEC 9800C-Arm Service Manual Download Page 301

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Calibration

7. Repeat the previous step with 120 kV @ 125 mA.

KV_SEN_TP and HI_MA_SEN Waveforms

Summary of Contents for 9800C-Arm

Page 1: ...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 Collimator I...

Page 2: ...luoro 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 Vertical L...

Page 3: ...eo signal that is transmitted to the Workstation for display processing and storage There are several options and variations of C Arm see table following Image Intensifiers are available in 9 inch and...

Page 4: ...h Image Intensifier 9 inch Imge Intensifier Options 12 inch Imge Intensifier Wig Wag Wig Wag L Arm L Rotation Orbital Orbital Flip Flop Horizontal Cross Arm Horizontal Cross Arm Positioning Vertical L...

Page 5: ...Lift Column L Arm Radial Assembly Horizontal Cross Arm Orbital Assembly L Rotation Control Flip Flop Standard C Arm Mechanical Movement Systems 4 Service Periodic Maintenance Contents Schematics Illus...

Page 6: ...C Arm Subsystem Horizontal Cross Arm Flip Flop L Rotation Orbital Vertical Lift Wig Wag Standard C Arm Motions 5 Service Periodic Maintenance Contents Schematics Illustrated Parts Installation...

Page 7: ...or Cover Camera Cover Vertical Column L Rotation Assembly X Ray Tube Cover Right Front Cover Left Front Cover similar not shown for clarity Control Panel Housing Super C Mechanical Movement Systems 6...

Page 8: ...C Arm Subsystem Horizontal Cross Arm Orbital L Rotation Vertical Lift Wig Wag Super C Motions 7 Service Periodic Maintenance Contents Schematics Illustrated Parts Installation...

Page 9: ...essed Vertical Column L Rotation Assembly Collimator Cover X Ray Tube Cover Front Top Cover Front Leg Cover Right Front Cover Left Front Cover similar not shown for clarity Cross Beam End Cap Rear Cov...

Page 10: ...Supply Vertical Column Lift Column L Rotational Arm Assembly L Rotation Mechanical Assembly Flip Flop Gas Shock Collimator Cover Primary and secondary Collimator X ray Tube Cover Thermal Switch Temper...

Page 11: ...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...

Page 12: ...er Vertical Column L Rotation Assembly X Ray Tube Cover Right Front Cover Left Front Cover similar not shown for clarity Control Panel Housing Image Intensifier Super C Subsystem Major Assembly and Co...

Page 13: ...tical Column Lift Column L Rotation Assembly L Arm Mechanical Assembly Gas Shock Collimator Cover Primary and secondary Collimator X ray Tube Cover Thermal Switch Temperature Sensor X ray Tube Front T...

Page 14: ...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...

Page 15: ...rm kV Generation Vertical Lift mA Generation Steering and Braking Automatic Brightness Stabilization ABS Functional Tests Use the following tests to verify operational condition of the C Arm If the C...

Page 16: ...technique settings 72kVp and 2 3mA This signifies that the Workstation and C Arm have successfully booted this operation takes from 80 to 120 seconds depending upon configuration No error messages sh...

Page 17: ...d in the Boot Test section above in this manual 2 Select FILM mode and enter the technique 60 kVp 2 5 mAs 3 Install the film cassette holder on the image intensifier and load a film cassette 4 Press t...

Page 18: ...hanics move laterally approximately 10 20 total Flip Flop Standard C Arms only Release the Flip Flop brake and verify that the C arm flip flops through its entire range smoothly without roughness or v...

Page 19: ...rotate smoothly without vibration b Position the C arm on the opposite side and lock the Flip Flop brake Rotate the C arm through its entire range The C arm should rotate smoothly without vibration c...

Page 20: ...outlet CB1 and or CB2 tripped Outlet power is off or breaker tripped Workstation beeps does not boot when switched on Isolation Transformer strapped incorrectly for applied AC voltage Refer to AC Powe...

Page 21: ...image Refer to the kV and mA Generation chapters of this manual Image quality unacceptable Refer to Image Intensifier and Power Supply section in the Image Control chapter of this manual Rotation ima...

Page 22: ...apter of this manual No X RAY ON indicator light Refer to the X Ray ON and X Ray DISABLE chapter of this manual No beeps when footswitch pressed Refer to the kV Generation and the mA Generation chapte...

Page 23: ...ptions 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 1 Service Pe...

Page 24: ...criptions These descriptions are intended only to show you how things work not to go into full details of the entire power system AC Power to PS1 and PS2 Whenever the Workstation power switch is on PS...

Page 25: ...SW 115 VAC PH MTR 115 VAC PH CH F10 K15 K16 Charger Light DS2 115 VAC PH PS1 P O Power Motor Relay PCB 115 VAC PH PS2 115 VAC PH See Key Power Diagram Workstation Interconnect Cables P O Power Signal...

Page 26: ...ove b Rather than pass through F6 as above a separate path loops back out to the Power Motor Relay PCB as 115VAC_PH_MTR c The 115VAC_PH_MTR connects to the K16 relay then in series to the K15 relay Wi...

Page 27: ...that power exists in the C Arm even when the Workstation is not operating c Whenever the Interconnect Cable is disconnected from the C Arm AC power is removed from the pins supplying the C Arm AC inpu...

Page 28: ...tem Replace with proper cord or connect to proper voltage Loose connectors Check Power Signal Interface PCB connectors Power Control PCB in Workstation jumper E1 set to 2800 position Set jumper to 980...

Page 29: ...Fuse on Power Signal Interface PCB Check F10 Workstation boots but nothing on C arm Battery Charger Light OFF Interconnect Cable Check AC power pins at Lemo connector in C Arm also check continuity b...

Page 30: ...AC Power Distribution Adjustment None Miscellaneous None 8 Service Periodic Maintenance Contents Schematics Illustrated Parts Installation...

Page 31: ...Locking the Workstation Casters 2 7 Workstation Moving Precautions 2 8 Cover Removal 2 9 Host Controller 2 14 Host Pentium CPU Motherboard 2 15 Single Board Computer and Passive Backplane 2 15 System...

Page 32: ...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 Boot Sequ...

Page 33: ...ical 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...

Page 34: ...to ensure safe and accurate system operation Physically the Workstation consists of two high resolution video monitors mounted on a moveable cart equipped with a keyboard and other user interfaces Th...

Page 35: ...kStation Components Major Components Major internal Workstation components include the Host Controller Display Subsystem Cine Disk Subsystem Image Subsystem User Interface External Interface and Power...

Page 36: ...cal 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...

Page 37: ...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 The CENTER pedal position permits all caste...

Page 38: ...rkstation up or down an incline It may roll out of control WARNING Never attempt to move the Workstation up or down steps Personal injury or equipment damage may otherwise result WARNING Never lock th...

Page 39: ...to avoid death or injury from electrical shock Note Set the brake before attempting to remove Workstation covers The Workstation s rear side and front covers are removable as is the monitor cover Howe...

Page 40: ...rts Installation 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 outw...

Page 41: ...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 si...

Page 42: ...d 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 bot...

Page 43: ...over 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 f...

Page 44: ...tions Host Controller circuitry consists of a high performance Host Pentium CPU motherboard System Interface PCB SCSI Controller PCB Ethernet DICOM Interface Laser Camera Interface IDE Hard Disk Drive...

Page 45: ...vices and processing user inputs The motherboard has four 16 bit ISA slots three of which are used These slots are usually populated with the System Interface PCB optional Laser Camera Interface and V...

Page 46: ...mmunication chips that enable the Host Pentium Processor to communicate with the modem monitors for setup and automatic contrast brightness control Control Panel PCB and Touch Screen assembly SCSI Con...

Page 47: ...card that may be used for diagnostic purposes IDE Hard Disk Drive The Workstation normally boots from the 50 megabyte non DOS partition of this 4 3 Gigabyte drive which contains the Nucleus operating...

Page 48: ...py 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...

Page 49: ...line maximum The left hand monitor is called the Primary display because it shows newly acquired images The right hand monitor is called the Secondary display it shows acquired images and provides a m...

Page 50: ...rol 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 Mechanically the Primary and Se...

Page 51: ...d 25 FPS at 50 Hz The Cine Disk Subsystem consists of the Cine Bridge PCB which mates with a PCI bus slot on the Host Pentium CPU a Cine Disk array controller that resides on the Cine Bridge PCB or pl...

Page 52: ...Overview 2 22 Service Periodic Maintenance Contents Schematics Illustrated Parts Installation Cine Disk Drives Cine 4 Disk Backplane Power Supply Cine Four Disk Assembly Covers Removed...

Page 53: ...bit per pixel parallel format Cine Disk Array Controller The cine disk array controller is also known as the Fibre Channel Arbitrated Loop FC AL Disk Controller It provides the data interface between...

Page 54: ...put 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...

Page 55: ...the CCD camera to produce enhanced images for the Display system monitors and Cine Disk subsystem The Image Subsystem also produces standard resolution interlaced video for the optional VCR and digit...

Page 56: ...ck control for the Workstation anti aliasing and anti vignetting of the digital X Ray images and creates the VLI window needed for the X Ray Generator to perform Automatic Brightness Stabilization Ima...

Page 57: ...so converts the non interlaced Image Processor video to standard resolution interlaced video that is compatible with PAL or NTSC video cassette recorders and monitors User Interfaces The Workstation s...

Page 58: ...el 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 C...

Page 59: ...m 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 re...

Page 60: ...tes a pulsed waveform and converts it to invisible infrared light much like a standard television remote control The IR receiver assembly in the Workstation detects the IR beam from the transmitter co...

Page 61: ...tion The LEDs and phototransistors are arranged in a rectangular matrix on a touch frame that surrounds the edge of the CRT These devices are ordinarily invisible behind the monitor bezel The touch fr...

Page 62: ...rated Parts Installation 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 LED...

Page 63: ...ts Schematics Illustrated Parts Installation 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 lig...

Page 64: ...x As its name implies the External Interface PCB connects the motherboard to the outside world It provides DC isolation where necessary and adapts system signals to make them compatible with external...

Page 65: ...resent 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 Con...

Page 66: ...ware that controls both the Workstation and the X Ray generator resides on the Workstation s IDE Hard Disk Drive The Workstation Host Controller subsystem normally boots from this drive OEC applicatio...

Page 67: ...0 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 W...

Page 68: ...ware 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 di...

Page 69: ...bove choices displays another unique touch screen that requires further operator input Nearly all system functions are available through the touch screen interface Please refer to the OEC Workstation...

Page 70: ...iod The remote computer resends the packet until it receives an ACK from the Workstation and then sends the next packet An upload from the client the Workstation consists of much the same protocol in...

Page 71: ...can be manual or automatic A fluoro shot terminates and image acquisition ceases when the operator releases the X Ray switch High Level Fluoro During High Level Fluoro HLF fluoroscopic mA increases to...

Page 72: ...the left hand monitor Subtraction is ideal for visualizing vasculature Roadmap Roadmapping produces a series of subtracted images that are the difference between a fluoroscopic image obtained with a c...

Page 73: ...aled keyboard Touch screen graphical user interface GUI Expanded external interface capabilities DICOM interface When all options are installed the ESP has the following capabilities On line help scre...

Page 74: ...rovide automatic and manual brightness and contrast control Provide mode selection interface to X Ray generator that allows selection of fluoro and digital spot modes Apply noise filter recursive aver...

Page 75: ...h Level fluoro and the 30 PPS option are not available The removable zip disk is an option Cardiac The Cardiac Workstation offers 30 FPS 5 minute Cine Disk capability High Level fluoro and the removab...

Page 76: ...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...

Page 77: ...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...

Page 78: ...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...

Page 79: ...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...

Page 80: ...ages 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...

Page 81: ...tium 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 The laser...

Page 82: ...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 c...

Page 83: ...nical 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 1 Service Periodic Mainte...

Page 84: ...e line outputting on Connector P9 leading to the Hand Switch Three additional outputs from the Power Motor Relay PCB are provided on Connector P8 all three lead to P4 of the Power Signal Interface PCB...

Page 85: ...4 5 6 Power Motor Relay PCB TP13 F6 3 2 1 P3 P9 P11 F7 1 1 2 Spare Spare Unused 5V J3 Hand Switch 5V 5V 5V To 5 Output Sheet 2 PS1 5VDC Output sheet 1 of 3 3 Service Periodic Maintenance Contents Sche...

Page 86: ...rol Panel Processor I O PCB Backplane TP3 F9 5V P5 1 6 P11 P10 4 6 7 P4 P6 TP3 F12 3 2 1 5V 5V 5V 5V 5V 5V FL1 TP25 1 2 3 P3 10 11 15 From 5 Output Sheet 1 See 5 Output Sheet 3 PS1 5VDC Output sheet 2...

Page 87: ...18 19 VCC VCC TP3 TP2 Alarm Alarm 5V Alarm 5V 17 18 19 20 21 Control Panel Processor I O PCB 1 2 3 Control Panel Processor PCB 1 2 3 17 18 19 FL2 VCC TP3 J4 P1 17 18 19 20 21 17 18 19 20 21 Alarm 5V A...

Page 88: ...utput PS1 provides one line of 12VDC to Connector P8 of the Power Motor Relay PCB where it divides into separate circuits protected by Fuse F2 F3 F4 and F5 F2 connects to P12 4 and is not used F3 conn...

Page 89: ...e each line is divided such that there are 3 pairs exiting the board One pair consists of a plus and a minus voltage Another pair consists of two positive lines A third pair consists of two negative l...

Page 90: ...internally direct to the T2 transformer which is a separate FRU in the Stator system see Stator Control later in this manual T2 then provides the true AC inputs to PS2 In the next diagram you can see...

Page 91: ...r F14 F15 F16 T2 1 2 4 6 PS2 1 8 2 9 3 10 11 115 VAC 22 5 VAC 38 VAC 28 VAC 115 VAC PH PS2 See AC Power Distribution 1 8 2 9 3 10 12 J3 6 7 10 11 5 12 1 5 2 6 3 7 F13 P7 J8 P9 CCD Camera 9 8 3 2 10 1...

Page 92: ...ngs connects directly to the Interlock system and also to the K7 relay coil then to the Image Intensifier as II_ON The II_ON becomes a status signal monitored by the X ray Controller PCB The 24V_IN go...

Page 93: ...does not correct the outputs problem replace PS1 2 PS2 Testing A Check the following test points and indicator lights on PS2 Test Point Indicator Light Voltage TP2 DS3 14VDC TP3 DS2 24VDC TP4 DS4 14V...

Page 94: ...anel Processor I O PCB VFDs Handswitch indicator lights OK no bootup Blown fuse F9 on Power Signal Interface PCB Replace fuse Loose connectors Check Connector P11 on Power Signal Interface PCB Check C...

Page 95: ...or 14VDC sections of PS failed Replace PS2 Neither Vertical Lift Column lift button works AC input problem Refer to AC Power Distribution chapter in this manual One lift button works but the other one...

Page 96: ...DC Power Distribution 14 Service Periodic Maintenance Contents Schematics Illustrated Parts Installation...

Page 97: ...Charging Battery Charging Circuit Mechanical Descriptions 2 Functional Tests 3 Fault Isolation 4 Adjustment 5 Miscellaneous 5 1 Service Periodic Maintenance Contents Schematics Illustrated Parts Insta...

Page 98: ...Workstation 115 VAC becomes available at the Battery Charger PCB as previously explained in the AC Power Distribution section of this manual At the same time DC power energizes the X Ray Controller P...

Page 99: ...y shuts off output and the charger goes into trickle charge mode until battery voltage rebuilds This is to protect the charger from high currents caused by low battery voltage such as during heavy use...

Page 100: ...mps causing an Overcurrent shutdown of the Battery Charger Power down or CHG_DISAB will reset the fault latch and allow normal operation Check for shorts at the battery charger output MW Output voltag...

Page 101: ...ole at this location The trimpot R71 turns counterclockwise to increase or clockwise to reduce the output voltage Check that high charge mode is not engaged If the battery charger output voltage is to...

Page 102: ...Battery Charging 6 Service Periodic Maintenance Contents Schematics Illustrated Parts Installation...

Page 103: ...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 Mis...

Page 104: ...ndard allows receivers and transmitters to be connected on a single pair of wire for transmitted and received data Incoming data causes the node ARCNet chip to interrupt the processor Fluoro Functions...

Page 105: ...rame sync signal INT_SYNC is a 190 microsecond active low signal that is buffered by U45 This signal is digitally filtered by U37 to prevent noise spikes from falsely interrupting the microcontroller...

Page 106: ...nput 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 4 Service Period...

Page 107: ...to the C Arm through the Interconnect cable 4 The Remote Diagnostics Gateway or Service node This node provides a data pathway between the system ARCNet and the serial interface to the Remote Utility...

Page 108: ...Serial Communication Failure Check PCB seating and cabling Check the test points for the correct voltage levels Adjustment None Miscellaneous None 6 Service Periodic Maintenance Contents Schematics Il...

Page 109: ...terlocks Interlocks Circuit Mechanical Descriptions 2 Functional Tests 4 Fault Isolation 5 Adjustment 5 Miscellaneous 6 1 Service Periodic Maintenance Contents Schematics Illustrated Parts Installatio...

Page 110: ...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 The system utilizes relays that are not energized...

Page 111: ...Relay PCB PWR SIG INTF F11 3 15A K2 K6 K9 K10 FILDVR PCB Bckpln Cont Rly K2 Pre Charge Fluoro Functions Field Size Relays FS_LINK A B To Fast Stop Switches S1A S2A INTLK COMPL Backplane 24V_INTERLOCK...

Page 112: ...apter 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 WAIT 5...

Page 113: ...path for open circuit Check cables and connectors Check Intlk_Complt line to X Ray Controller PCB for low If high interlock path is open System does not boot stops at 14th arrow Interlocks open Check...

Page 114: ...Interlocks Miscellaneous None 6 Service Periodic Maintenance Contents Schematics Illustrated Parts Installation...

Page 115: ...d Control Circuit Mechanical Descriptions 2 Stator Power and Control 2 Filament Selection 4 Functional Tests 4 Fault Isolation 5 Adjustment 6 Miscellaneous 6 1 Service Periodic Maintenance Contents Sc...

Page 116: ...ator_Run Stator_Sense X Ray Controller PCB see sheet 2 Power Motor Relay PCB see sheet 3 T3 Stator Transformer see Sheet 4 X Ray Tube see Sheet 4 115 VAC_PH_MTR Stator_Cap_1 Stator_Cap_2 Xfrmr_40 VAC...

Page 117: ...de reaches running speed the X Ray Controller causes the 115VAC to the stator and capacitor to turn off by turning off the STATOR_RUN signal on the Power Motor Relay PCB The signal STATOR_START is tur...

Page 118: ...uccessions of relay clicks indicating that the system came out of sleep mode Filament Selection This information is part of the mA Generation chapter Functional Tests To functionally test the Stator P...

Page 119: ...perated Usually with ANODE HOT and or HOUSING HOT message displayed Allow to cool 15 minutes and try again Stator runs at 115V tube overheats Stator Start relay stuck on Check voltage applied to stato...

Page 120: ...er 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 6 Service...

Page 121: ...Charging Pre Charging Circuit Mechanical Descriptions 2 Functional Tests 6 Fault Isolation 7 Adjustment 7 Miscellaneous 7 1 Service Periodic Maintenance Contents Schematics Illustrated Parts Installat...

Page 122: ...see Stator Power Control CHG_OUT see Batteries Charging AC_CAP AC_CAP_RTN INV_B_SEN_DIV INV_B_SEN 24V_INTERLOCK PRE_CHRG CONTACT BAT_POS_F4 CAP_POS_F2 R_DIS CAP_NEG CONTACT_RLY 24V_INTERLOCK To Snubbe...

Page 123: ...HG_OUT see Sheet 1 K2 F4 Reservoir Capacitor Resistor Bank P4 9 1 8 7 3 6 24V_INTERLOCK CONTACT_RLY BAT_POS_F4 CAP_NEG R_DIS F2 CAP_POS_F2 CAP_POS CB1A CB1B Pre charging Sheet 2 3 Service Periodic Mai...

Page 124: ...0 CR23 CR22 R45 R_DIS Voltage Sense Relay K2 Sheet 4 Contact Lock K6 Sheet 4 Filament Regulation Drive and Selection Circuits see mA Generation CAP_POS_F2 CAP_POS_F2 from Sheet 2 from Sheet 4 P4 3 P4...

Page 125: ...le which switches battery power directly across the capacitor bank Completion of Precharge disables software control to prevent a subsequent software failure from turning off the pre charge relays whi...

Page 126: ...lly and the operator will restart the system or call for service Functional Tests To test the Pre charge function perform the functional tests in the C Arm Subsystem chapter Most failures will be mani...

Page 127: ...ure occurred and overvoltage protection is activated Try rebooting If fault persists service technician will need to diagnose Do not leave system turned on as some components will become hot Adjustmen...

Page 128: ...Pre Charging 8 Service Periodic Maintenance Contents Schematics Illustrated Parts Installation...

Page 129: ...nctional 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...

Page 130: ...rface PCB One set of the dual contacts of each switch removes power from the tube stator transformer and software immediately stops x rays The other contact set removes 24VDC power from the vertical c...

Page 131: ...ray Enable and X ray ON are asserted X Ray Enable is generated by a hardware switch closure top button hand or footswitch whereas X Ray ON is generated by software Both must be active to allow X Ray g...

Page 132: ...X ray On X ray Disable X Ray On Switch 4 Service Periodic Maintenance Contents Schematics Illustrated Parts Installation...

Page 133: ...s 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 Make a Film exposu...

Page 134: ...ications to X Ray Controller PCB and Fluoro Functions PCB Bad Footswitch Mode Switch PCB seating and cable connections Make a mode change using the Handswitch Check cabling and PCB seating X ray Keysw...

Page 135: ...I_ON there and on Interconnect Diagram CPU_INTERLOCK Signal toggles continuously while CPU is running KEY_PWR 12V from Power Control PCB via pushbutton switch STATOR_RUN Signal from X Ray Controller o...

Page 136: ...V_OK Active low logic level signal indicates that filament current is present OVERLD_FAULT Active high latched fault signal indicates overcurrent in HV transformer SAT_FAULT Active high latched logic...

Page 137: ...nal originating on the Generator Driver PCB is active high and is configured to prevent X ray generation at the destination HV Supply Regulator PCB then absence of a connection will cause the destinat...

Page 138: ...p drivers ANALOG_RTN XR Ctrlr Gen Drvr GND N Direct ground return FIL_DRV_A XR Ctrlr Gen Drvr L Y No fil drv FIL_DR_OK hi FIL_DRV_B XR Ctrlr Gen Drvr L Y No fil drv FIL_DR_OK hi FIL_SELECT XR Ctrlr Fi...

Page 139: ...ut Gen Drvr L Y LED off FIL_DRV_OK Gen Drvr HV Sup Reg L Y Disables KVP_DRV_RTN XR Ctrlr L Y Software input OVERLD_FAULT Gen Drvr Gen Drvr H N Sets FAULT high dis kVp XR Ctrlr H Y Software input SAT_F...

Page 140: ...ce Analog Signal Levels In most cases analog signals will be transmitted and received differentially using the following standard interface as shown in the schematic below SENSE OUTPUT ON TX PCB CABLE...

Page 141: ...on 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 Powe...

Page 142: ...r PCB to control the kV voltage required The XRAY_ENABLE signal allows X rays to be generated and the XRAY_ON signal switches a control signal through circuitry on the HV Regulator PCB to adjust the k...

Page 143: ...KVP Drv A Top KVP Drv A Btm KVP Drv B Top KVP Drv B Btm Generator Driver PCB IGBTs Snubber PCB KV Sens Battery Packs HV Tank HV Regulator PCB KVP Cntl KVP Drv A Top KVP Drv A Btm KVP Drv B Top KVP Dr...

Page 144: ...High Voltage Supply Regulator PCB High Voltage Supply Regulator PCB Location Generator Driver PCB Generator Driver PCB Location IGBT Snubber PCB IGBT Snubber Location PCB locations 4 Service Periodic...

Page 145: ...faults SAT_FAULT Excessive current in the series tuning components will generate an overload fault OVERLD_FAULT These fault signals are combined to drive a latch FAULT FAULT_LATCH which can be reset...

Page 146: ...Make a film exposure Fault Isolation WARNING Dangerous voltages are present when covers are removed from the system and when x ray exposures are made Failure Possible Cause Remedy Fluoro exposure tech...

Page 147: ...should give some output Various Errors Peak voltages on IGBT s could exceed ratings and cause early failure Snubber components damaged or defective The capacitors are rated for at least 400V The curr...

Page 148: ...or PCB The mA setting should be 0 2mA 2 Verify the output voltage at TP25 KVP_CNTL_TP to be 6 5596V 2 3 The KVP_PULSE voltage at TP19 should be 6 5577V 2 4 The KVP_SEN_TP voltage at TP21 should be 6 5...

Page 149: ...val and replacement of the Filament Driver PCB cover and PCB and the IGBT Snubber Asm The fuse can be checked from the fuse terminals on the top of the Snubber PCB Dead time adjustments will be necess...

Page 150: ...kV Generation Location of IGBT PCB 10 Service Periodic Maintenance Contents Schematics Illustrated Parts Installation...

Page 151: ...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 t...

Page 152: ...kV Generation Cap Power Module Cap Power Module Location 12 Service Periodic Maintenance Contents Schematics Illustrated Parts Installation...

Page 153: ...s ground at Backplane via cable asm 00 879454 XX XRAY_ON Active low logic level controls X ray pulse envelope XRAY_ENABLE Active low logic level controls X ray production KVP_CNTL Analog level control...

Page 154: ...FIL_ERROR etc FAULT_RST Logic high clears all fault latches on Generator Driver HVSR HV_GEN_ON Logic level signal indicates presence of high voltage drive at tank FAULT Active high logic level signal...

Page 155: ...tor Driver PCB at A2J4 P4 Q2E1 Upper emitter of Q2 to Generator Driver PCB at A2J4 P4 Q2G2 Lower emitter of Q2 to Generator Driver PCB at A2J4 P4 Q1E1_C2_L1 Output of Q1 to L1 Q2E1_C2_L1 Output of Q2...

Page 156: ...kV Generation 16 Service Periodic Maintenance Contents Schematics Illustrated Parts Installation...

Page 157: ...s 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 1 Se...

Page 158: ...transformer output drives a pair of MOSFETs that drive the selected filament transformer in the high voltage tank The amplitude of the filament drive is regulated on the Filament Drive PCB by changin...

Page 159: ...djust the filament voltage controlling the actual tube mA during a shot The pulse width does not change The small feedback loop change provides a safeguard to the x ray tube and guards against imprope...

Page 160: ...s chapter High Voltage Tank If you suspect the tank may be faulty make the tests detailed in the Fault Isolation section and check for internal arcing and carbon trails in the connectors Do not open u...

Page 161: ...ate precautions Depending on the type of failure check any of the following Filament Test To test the small and large filaments perform the following exposures 1 Take a 70 kV 20 mAs film exposure If t...

Page 162: ...High Voltage Tank WARNING Dangerous voltages are present when covers are removed from the C Arm Failure Possible Cause Remedy Low mA messages High Voltage Tank Use the schematic diagram and an ohmmete...

Page 163: ...s detected by observation that its output changes as the housing heats and cools and comparison with a room temperature benchmark at boot up if sufficient time has elapsed since last procedure Excessi...

Page 164: ...t and the signal FIL_DRV_OK goes high indicating this condition to the X Ray Controller PCB The software monitors this signal before enabling X ray production If FIL_DRV_OK is high or is disconnected...

Page 165: ...the Generator Driver Absence of filament voltage at the tube prevents X ray generation Filament Voltage Error If the wrong voltage is applied to the filament the mA will also be wrong Filament B plus...

Page 166: ...lected filament Software also checks the INV_B_SEN and FIL_B_SEN signals to verify correct supply voltages No filament current filament voltage present If the connector is disconnected or a filament d...

Page 167: ...on during the shot If aging results in the wrong filament current mitigation is provided by logging the gradual change in filament characteristics since the last calibration Filament current error If...

Page 168: ...et up by FIL_B_CNTL and FIL_ERROR This is done before generating X rays If the filament supply voltage is high there could be a fault in the output stage on the Filament Driver PCB but software may be...

Page 169: ...used to sense whether a connection is made between A9J1 P1 and A21P3 J3 via cable assy 00 879447 XX KVP_SEN_POS From kVp sense voltage divider in tank A9P2 J2 to Backplane A1P3 J3 Positive going sens...

Page 170: ...mA Generation 14 Service Periodic Maintenance Contents Schematics Illustrated Parts Installation...

Page 171: ...lization Automatic Brightness Stabilization Circuit Mechanical Descriptions 2 Functional Tests 4 Fault Isolation 5 Adjustments 6 Miscellaneous 6 1 Service Periodic Maintenance Contents Schematics Illu...

Page 172: ...PCB At this time the Generator software enables the feature Video from the CCD Camera is also input to the Video Controller PCB in the Workstation The Host Pentium computer looks at a particular sect...

Page 173: ...r PCB System I F PCB HV Supply Regulator PCB kVp mA X Ray Controller PCB Camera Gain Fluoro Function PCB Workstation Host Pentium Computer C Arm Backplane ARCNET Interconnet Cable ABS Path 3 Service P...

Page 174: ...roscopic exposure WARNING The following procedure generates live x rays Take appropriate precautions against undue exposure Take several Fluoro exposures using various filters in each Note the change...

Page 175: ...failed component or assembly White Image Technique servos to minimum 40 kVp Possible loss of X ray control excessive output not controllable Troubleshoot and repair X ray generator Calibration of TV...

Page 176: ...cellaneous Check Test points TP25 and TP26 on the Fluoro Functions PCB for camera gain adjustment data to the CCD Camera Check TP11 on this PCB for a 1 6Mhz clock signal into U48 Check Interconnect pl...

Page 177: ...llimator Collimator Circuit Mechanical Descriptions 2 Functional Tests 3 Fault Isolation 3 Adjustments 4 Miscellaneous 5 1 Service Periodic Maintenance Contents Schematics Illustrated Parts Installati...

Page 178: ...collimator is controlled by software through the Fluoro Functions PCB The Shutter Width Rotation and Iris motors set the size and shape of the x ray beam under control of the operator The associated...

Page 179: ...ch error message refer to the Diagnostics chapter in this manual Fault Isolation Failure Possible Cause Remedy Error messages about the collimator see the Diagnostics chapter in this manual Collimator...

Page 180: ...utter Leaves Rotation Pot Iris Pot Shutter Leaves Rotation Motor 3 Dovetailed Plates Z X Z Axis Adjust X Axis Adjust Shutter Leaves Motor And Pot Collimator Components 4 Service Periodic Maintenance C...

Page 181: ...wo 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 Miscellane...

Page 182: ...Collimator 6 Service Periodic Maintenance Contents Schematics Illustrated Parts Installation...

Page 183: ...ier 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 C...

Page 184: ...o supplies control voltages to the Image Intensifier refer to the Image Intensifier section of this chapter for more details to control field size and transfers data and other signals between the work...

Page 185: ...CArm Rot Mot CArm Rot Posn CArm Pots Ref Cam Comm Cam Comm Sld Cooler Sply Cam Cooler Pwr Cam Cooler Rtn Backplane Fluoro Functions PCB Iris Motor Prism Rotn Motor CCD Camera Camera Cooler Lenzar Opt...

Page 186: ...Edge Focus Overall Focus Size Image Intensifier Tube and Power Supply A power supply attached to the II housing produces the voltages needed for the internal electrostatic focusing and deflection grid...

Page 187: ...a 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 5 Service...

Page 188: ...ollimator Iris Open Close A failure on the Fluoro Functions PCB may result in an array of symptoms Some failures may result in an error message being displayed on the Mobile C Arm s Control Panel WARN...

Page 189: ...eo and image chain Check Fluoro Functions PCB ARCNET Communications failure Symptoms Control Panel button pushes may not cause the intended change on the workstation Fluoro Functions PCB See Error Mes...

Page 190: ...d 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 Check all MAG sizes Adjustm...

Page 191: ...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 9 Service Periodic Maintenance C...

Page 192: ...16 MHz CLOCK U48 33 INT_ARC 12 CPU AS 34 CAM_ROT Position Filters 13 LIM_REF Motor Limit 35 CAM_IRIS Position Filters 14 FRAME_SYNC_LO ARCNET 36 CAM_ROT Position Filters 15 INT_FSYNC ARCNET 37 COL_WI...

Page 193: ...hanical Descriptions 2 X ray Tube Cooling 2 CCD Camera Thermoelectric Cooling 4 Fault Isolation 5 Functional Tests 6 Adjustment 6 Miscellaneous 6 1 Service Periodic Maintenance Contents Schematics Ill...

Page 194: ...dissipation because of constant use some means of monitoring and removing the excess heat must be employed The X Ray tube is enclosed in a case that is filled with oil The oil provides rapid removal a...

Page 195: ...Cooling 3 Service Periodic Maintenance Contents Schematics Illustrated Parts Installation...

Page 196: ...t would result in greater fixed paattern defects However white dots may appear due to failure of the offset correction hardware on the Video Control PCB or software The TEC requires 5 Volts at about 2...

Page 197: ...ccurs 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 foll...

Page 198: ...oro Functions PCB and TEC B Check power at input to Fluoro Function PCB If power present replace the Fluoro Functions PCB 3 Verify presence of 12VDC at output of Power Motor Relay PCB A If no voltage...

Page 199: ...p Motion Flip Flop Motion Circuit Mechanical Descriptions 2 Functional Tests 3 Fault Isolation 3 Adjustment 3 Miscellaneous 4 1 Service Periodic Maintenance Contents Schematics Illustrated Parts Insta...

Page 200: ...op assembly To secure the C and prevent further rotation on the cradle axis position either brake handle toward the lock icon CAUTION When you release the Flip Flop brake handle place your other hand...

Page 201: ...hoe for wear Replace brake shoe if necessary Flip Flop brake does not prevent Flip Flop movement of C Arm Brake is out of adjustment Adjust brake in accordance with the following paragraph Adjustment...

Page 202: ...le with the screw 6 Adjust the position of the second brake handle so that both handles are uniform 7 If the brake cannot be adjusted replace the Flip Flop Brake Shoe 8 The Flip Flop Brake Shoe can be...

Page 203: ...l Motion Orbital Motion Circuit Mechanical Descriptions 2 Functional Tests 3 Fault Isolation 4 Adjustment 4 Miscellaneous 4 1 Service Periodic Maintenance Contents Schematics Illustrated Parts Install...

Page 204: ...moving Orbital Motion Orbital Scale Orbital Brake Handles One on either side of cradle Orbital Movement and Brake The following illustration is an exploded view of the C Arm s Orbital Brake Rotating e...

Page 205: ...trol of the its movement Release the orbital brake Verify that the C orbits smoothly in its cradle through an arc of 115 degrees Verify that the entire orbital scale on the back of the C weldment is r...

Page 206: ...r 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...

Page 207: ...g Motion Wig Wag Motion Circuit Mechanical Descriptions 2 Functional Tests 4 Fault Isolation 4 Adjustment 5 Miscellaneous 6 1 Service Periodic Maintenance Contents Schematics Illustrated Parts Install...

Page 208: ...g 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 Br...

Page 209: ...Brake Pad between the floating plate and fixed plate shown below O ring Wig Wag Brake Handle Brake Actuator Floating Plate Brake Pad Dowel Pin Fixed Plate Bearing Block Cover Cross arm Brake Handle Be...

Page 210: ...ION Position Cross Arm housing facing straight ahead and set Wig Wag brake before moving C Arm Equipment damage or personal injury may otherwise result Fault Isolation If the Wig Wag brake does not wo...

Page 211: ...Remove Torx screw that retains the brake handle 2 Remove the handle 3 Adjust the brake acuator screw adjuster in to make the brake engage earlier or out to engage later 4 Reinstall the handle onto the...

Page 212: ...Wig Wag Motion Miscellaneous Not applicable 6 Service Periodic Maintenance Contents Schematics Illustrated Parts Installation...

Page 213: ...m Motion Horizontal Cross Arm Motion Circuit Mechanical Descriptions 2 Functional Tests 4 Fault Isolation 4 Adjustment 4 Miscellaneous 4 1 Service Periodic Maintenance Contents Schematics Illustrated...

Page 214: ...tor 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 Lock Extension...

Page 215: ...etting 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 Cam Brake Mount Brake Shaft Brake Handle Cross Arm Brake...

Page 216: ...its 90 degree lock position will not apply the brake more securely but may instead result in damage to the mechanism CAUTION Make sure Cross Arm is fully retracted and brake is set before moving C Arm...

Page 217: ...it 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 1 Service Periodic Maintenance Contents Schematics...

Page 218: ...degrees in either direction Gas shocked dampened springs inside the L Arm hold it in place when you remove your hand A rotation indicator on the back of the L Arm shows its current angular position S...

Page 219: ...L Arm Motion L arm Rotation Rotation Scale Rotation Brake L arm L Arm Rotation and Brake 3 Service Periodic Maintenance Contents Schematics Illustrated Parts Installation...

Page 220: ...make it easy for you to manually position the L Arm in any convenient position and have the L Arm remain stationary when you remove your hand WARNING Before you remove the X Ray Tube or the Image Inte...

Page 221: ...l and secure safety bolt as shown in the following illustration Secure the L Arm brake 6 Perform required maintenance making sure to reinstall all removed items so that C is once again balanced 7 Remo...

Page 222: ...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 6 Service...

Page 223: ...L Arm Motion Mechanical Brake Stop Brake Handle L Arm Brake Assembly 7 Service Periodic Maintenance Contents Schematics Illustrated Parts Installation...

Page 224: ...with instructions in Replacement chapter and check brake shoe for wear Replace brake shoe if necessary L Arm brake does not secure L Arm Brake is out of adjustment Adjust brake in accordance with the...

Page 225: ...gular position 7 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 Miscellaneou...

Page 226: ...L Arm Motion 10 Service Periodic Maintenance Contents Schematics Illustrated Parts Installation...

Page 227: ...ft 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 Mis...

Page 228: ...y up to 18 inches 46 cm above its normal transport height An internal reversing 24 volt DC motor damped by a gas shock mechanism extends and retracts the Lift The Vertical Column Lift also serves as a...

Page 229: ...3 also produces 36 VDC which it uses to interface with the Vertical Column Lift buttons PS3 mounts on the left hand side of the generator under the Left Side Cover as shown in the following illustrati...

Page 230: ...n 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 PS3 Co...

Page 231: ...orderly way When the C powers up correctly the Power Motor Relay PCB permits movement of the Vertical Column by performing the following tasks Applies 115 VAC to Column Power Supply PS3 in response t...

Page 232: ...Vertical Column Lift Power Motor Relay PCB Power Motor Relay PCB 6 Service Periodic Maintenance Contents Schematics Illustrated Parts Installation...

Page 233: ...Signal Interface PCB Fuse F11 protects this line The fuse is rated at 3 15 amps and resides on the Power Signal Interface PCB The Power Signal Interface PCB resides on the left hand side of the genera...

Page 234: ...n the Power Motor Relay PCB that supply 115 VAC to Column Power Supply PS3 The other closed switch contact connects 36 VDC from the Column Power Supply to its LIFT_UP_SW or LIFT_DN_SW selector line de...

Page 235: ...en you press them Each Fast Stop switch contains two ganged SPST normally closed momentary switches Pressing either Fast Stop switch breaks the CPU Interlock circuit disabling X rays and interrupts th...

Page 236: ...all Vertical Column movement is smooth and quiet 5 Press and hold the Up Vertical Column button While the Vertical Column moves upward press one of the Fast Stop buttons Verify that Vertical Column m...

Page 237: ...Relay PCB Check PS2 for 24 volts on P2 11 Refer to DC Power Distribution chapter for additional details on how to troubleshoot PS2 Vertical Column movement button does not produce column movement or...

Page 238: ...P4 on Power Motor Relay PCB Inspect repair or replace as necessary see Replacement chapter Fast stop button does not halt stop column movement Faulty Power Motor Relay PCB Inspect replace if necessary...

Page 239: ...t 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 1...

Page 240: ...eel at the rear of the C arm is a safety feature that prevents the C arm from tipping backwards on inclines or during maintenance Front Casters The front casters rotate freely about the vertical axis...

Page 241: ...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...

Page 242: ...r caster Use either brake pedal to operate the friction brakes that immobilize both rear casters to keep the generator from rolling Each rear caster has an internal brake mechanism that applies a brak...

Page 243: ...Steering and Braking Brakes On Or Brakes Off Brake Pedal Operation 5 Service Periodic Maintenance Contents Schematics Illustrated Parts Installation...

Page 244: ...uld not happen unless you remove the C from the generator for servicing purposes The balance wheel is a low maintenance item with sealed bearings It requires no periodic maintenance and does not requi...

Page 245: ...ou steer them right or left 2 Make sure there are no worn or damaged areas on either caster tread 3 Verify that there is no wobble or binding associated with either caster Steering 1 Verify that both...

Page 246: ...ontamination and excessive wear 2 Verify that the balance wheel rotates smoothly and does not wobble or bind on the axle Fault Isolation Note Refer to Replacement chapter for instructions on how to re...

Page 247: ...ing sprocket contaminated with debris Inspect and clean as necessary Rear caster does not steer freely Steering chain or steering sprocket requires lubrication Inspect and lubricate as necessary Worn...

Page 248: ...ones as described in the Replacement section of this manual Follow these steps to adjust the brake in either rear caster see next illustration 1 Jack malfunctioning caster slightly so that wheel clea...

Page 249: ...and check brakes for proper operation Adjustment Brake Plunger Brake Plunger Yoke Bearing Housing Compression Spring Cylinder Bearing Rear Wheel Yoke Wheel Set Screw Adjustment Brake Plunger Rear Whe...

Page 250: ...Steering and Braking Miscellaneous Not applicable 12 Service Periodic Maintenance Contents Schematics Illustrated Parts Installation...

Page 251: ...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 Accumulate Exposure Time...

Page 252: ...M in these systems than older systems with 64 Meg of RAM memory If booting the 9800 system takes considerably longer than this try to locate the source of the problem and correct it before releasing t...

Page 253: ...squares have the following meaning Five Squares Initialization of interrupts display and timers is complete Ten Squares EEPROM checksum verification is complete 15 Squares Keyboard initialization is...

Page 254: ...PCB Reload software Two Arrows The system performs a CRC on persistent non volatile data If bootup fails on this arrow reload the software Three Arrows Internal software timers initialize If bootup f...

Page 255: ...m loads duty cycle table into memory If bootup fails on this arrow check communications between the Workstation and C Arm Check flash memory Check GEN_PO bin file on Workstation 14 Arrows System check...

Page 256: ...Messages There are five kinds of messages that appear on the C Arm Control Panel Vacuum Fluorescent Displays 1 A Timed message appears for a set time and then disappears 2 An Alternating message appe...

Page 257: ...reboot the system leaving power off for five seconds If the failure reappears refer to A D Channel Failure in this section for detailed troubleshooting information ANODE IS HOT XX This error message...

Page 258: ...cannot maintain position tolerance usually because it s jittery You may continue to use the system although the iris instability may degrade the image at the edges of the X ray field COLLIMATOR CAL RE...

Page 259: ...appears when the Interlocks are open This is typically the result of pressing either FAST STOP switch on the front of the C Arm Control Panel This condition disables X ray generation and most system f...

Page 260: ...s HOUSING OVERHEATED This message appears when the X ray tube is at 100 or more of its rated capacity The thermal cutoff switch activates shutting down the system immediately Let the housing cool befo...

Page 261: ...LOADING STANDARD ABS This message appears when you select the Standard ABS table as the current ABS table in the generator MA ON IN ERROR The system displays this message when mA Sense is on and no X...

Page 262: ...rrent in the IGBTs and check the HV drive circuitry STATOR NOT ON The system generates this message when it determines that the X ray tube anode is not powered This error causes the system to shut dow...

Page 263: ...h and or footswitch and restart the system If the system restarts without failure the disconnected device may require service If message persists with handswitch and or footswitch disconnected there i...

Page 264: ...A_SEN P1 68 69 12 Inverter B INV_B_SEN P1 48 49 13 kVp Feedback KVP_CTL P1 24 25 14 Filament B Feedback FIL_B_CNTL P1 37 38 15 Test DA Sense TEST_DA U34 7 Generator Processing The generator performs a...

Page 265: ...ermistor on the X ray tube housing Since anode temperature cannot be measured directly and must be calculated it is possible to fool the software under certain circumstances by removing and reapplying...

Page 266: ...cess the Generator Events Log and review the messages there Refer to the program help file for information on RUS RUT program operation Besides listing the generator event each message includes one or...

Page 267: ...ttery Voltage Inverter B A D COLLIMATOR CAL REQUIRED PRESS ANY KEY Error 0 Leaves 1 Iris 2 Leaves and Iris 2 None COLL IRIS UNSTABLE Error 1 Pot reading 2 None COLL IRIS POTENTIOMETER ERROR PRESS ANY...

Page 268: ...is missing or corrupt 11 CMOS and flash is not initialized 12 CMOS data out of range Offset 13 No error message file HLF OVERTIME digital cine Operation 1 None 2 None FILAMENT REGULATOR FAILED Error 1...

Page 269: ...Register Address 2 Register Reading INTERLOCK FAILURE Error 1 0 Interlock failed to close 1 Interlock already closed 3 Interlock IO_ILK task missing 2 None FAST STOP ACTIVATED POWER OFF WAIT 5 SECOND...

Page 270: ...MA SENSOR FAILE Error 1 Sensed mA 2 Desired mA MA ON IN ERROR POWER OFF WAIT 5 SECONDS Error 1 Sensed mA 2 None OVERLOAD FAULT Error 1 High Voltage Input Register reading 2 None OVERVOLTAGE FAULT Erro...

Page 271: ...n 1 None 2 None TEMP SENSOR FAIL Error 1 Thermistor reading 2 None 4 HOUR WARM UP REQUIRED PRESS ANY KEY Operation 1 None 2 None XRAY OVERTIME PRESS ANY KEY Error 1 Inverter B Battery Voltage 2 Filame...

Page 272: ...hat may be connected to the Workstation rear panel The second junction provides ARCNet communication to the C Arm through the Interconnect cable b Remote Diagnostics Gateway or Service node This node...

Page 273: ...al and that these nodes are in proper sequence You can identify them as follows Node 1 Fluoro Functions PCB hex code 40 Node 2 X Ray Controller PCB hex code 20 Node 3 Service node hex code 50 Node 4 W...

Page 274: ...Diagnostics All ARCNet Nodes 24 Service Periodic Maintenance Contents Schematics Illustrated Parts Installation...

Page 275: ...Diagnostics X ray Controller Node 25 Service Periodic Maintenance Contents Schematics Illustrated Parts Installation...

Page 276: ...Diagnostics Fluoro Functions Node 26 Service Periodic Maintenance Contents Schematics Illustrated Parts Installation...

Page 277: ...Diagnostics Workstation Node 27 Service Periodic Maintenance Contents Schematics Illustrated Parts Installation...

Page 278: ...Diagnostics Service Node 28 Service Periodic Maintenance Contents Schematics Illustrated Parts Installation...

Page 279: ...llowed by an illustration of the LEDs on each PCB Some of the LEDs don t change state during system operation Others turn on and off with normal system activity Other LEDs come on only when the circui...

Page 280: ...d U2 01 CPU registers initialized 02 Program flash memory checksum passed 03 Program initialized data area initialized 04 First program null data initialized 05 Secind program null data initialized 06...

Page 281: ...ON ON ON ON FLASHING ON ON ON ON ON ON FLASHING These LEDs are connected to the data bus and you should see activity during bootup They were originally installed for software development purposes The...

Page 282: ...V_GEN_ON Shutdown On during X Ray exposures X Ray Enable On during X Ray exposures X Ray On Disable_HV DS1 is lit during bootup 16 18 arrows is off after bootup and will light at power off and then de...

Page 283: ...URING X RAY EXPOSURE SHUTDOWN FAULT X RAY ON X RAY ENABLE NORMAL ON ON OFF ON FILAMENT DRIVE OK GROUND INTEGRITY FAULT LATCH INTERLOCK COMPLETE NORMAL ON OFF These LEDs will be lit only if there is a...

Page 284: ...ed 0A Tasks Initializing FE 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 E4 Stack Memory dang...

Page 285: ...bration 18 Using RUT 18 Using UtilitySuite 19 Fluorographic Pulsed mA Accuracy Test 20 Entrance Exposure Rate Limits Verification 21 Enter mA Limit Values Using RUT 21 Enter mA Limit Values Using Util...

Page 286: ...Setup 71 Monitor Size 71 Verification Using RUT 71 Verification Using Utility Suite 71 Calibration Using RUT 72 Calibration Using Utility Suite 72 Monitor Light Settings 73 Using the RUT Utility CD 73...

Page 287: ...AFT is 00 878867 Boresite Alignment Tool 00 879599 Converging line pair tool 00 900860 Bristol six flute spline tool 048 00 900920 Wisconsin mesh tool 00 900040 Serial cable 00 901559 Three 1 mm sheet...

Page 288: ...ds connected before performing the following calibration procedure Calibrate DC Power Supply PS1 as follows 1 Remove Left Side Cover 2 Loosen and remove two torx screws and lockwashers that secure swi...

Page 289: ...checking each output for proper voltage under load and making adjustments when necessary Calibrate the supply when you replace it and semiannually as described in the periodic maintenance procedures W...

Page 290: ...ications replace PS2 Generator Calibration WARNING The following procedures require you to take X rays Take appropriate precautions to protect yourself and others CAUTION The following procedure is cr...

Page 291: ...tages at TP39 and TP40 as closely as possible to 0 00 VDC Any error greater than 5 millivolts is a failure that necessitates replacement of the High Voltage Supply Regulator PCB 1 Configure the C Arm...

Page 292: ...until the two signals come out of sync again Note the position of the pot 4 Set R139 midway between the two out of sync points Verify that both signals are synchronized with R139 in this position 8 S...

Page 293: ...Calibration HF_SYNC and RAMP Signals In Sync 9 Service Periodic Maintenance Contents Schematics Illustrated Parts Installation...

Page 294: ...e 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 Ram...

Page 295: ...TP67 on the Generator Driver PCB and oscilloscope channel 2 to TP68 3 Turn system on and allow Workstation and C Arm to boot completely 4 Select a technique of 40 kVp 0 2 mA 5 Align the two channels o...

Page 296: ...AUTION 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 Failure to do this may cause the dead time on one side of...

Page 297: ...peat steps 2 and 3 for the B dead time adjustment Use R84 on the High Voltage Supply Regulator PCB Differentiator Setup 1 Move channel 1 of the oscilloscope to TP21 KV_SEN_TP on the HVSR Connect chann...

Page 298: ...d 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...

Page 299: ...ge Supply Regulator PCB and channel 2 to TP40 HI_MA_SEN 3 Select 15 or 30 fps and 15 or 30 pps on the Workstation While taking an HLF X ray set the kVp for 40 and adjust mA to 11 Observe the kVp signa...

Page 300: ...done 6 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 The two w...

Page 301: ...Calibration 7 Repeat the previous step with 120 kV 125 mA KV_SEN_TP and HI_MA_SEN Waveforms 17 Service Periodic Maintenance Contents Schematics Illustrated Parts Installation...

Page 302: ...own X Ray on switch on the Mainframe or hold down the Fluoro Switch on the Foot Pedal with a weight of some kind then click OK At that time you will notice that on the Control Panel of the Mainframe R...

Page 303: ...and double click on the tool Icon and go to RUT 2 In Main Menu Window click on Connect System 3 In the left hand column click on Filament Calibration 4 When the Filament Calibration Window appears cl...

Page 304: ...amplitude of the pulses you see on TP21 Verify that the result is 60 kVp 4 kVp 3 67 to 4 29 VDC 7 Set the C Arm to 90 kVp 40 mA Step on the HLF foot pedal to make a pulsed HLF exposure Record the pea...

Page 305: ...message appears wait before making the next test Note For pre OPIS system software use the RUT utility CD 1 Launch RUT proceed as follows a In the upper left hand corner click on Tools b In the windo...

Page 306: ...e rate of 20 R minute minus 10 5 for setup errors and 5 for dosimeter errors 11 Record the breakpoint at the corresponding kVp listing in the mA Limit File Editor window For example if you reached 18...

Page 307: ...w 5 Increase kVp to the next nearest setting that is evenly divisible by 5 kVp Decrease mA to prevent the exposure rate from exceeding 9 26 R minute Record the mA value in the mA Limit File Editor at...

Page 308: ...ainframe 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 Verify mA Limi...

Page 309: ...toggle hold down the CTRL ALT M keys Then the X key on the DOS keyboard will toggle DAP On and Off Note The DOS keyboard is the peripheral keyboard connected to the Workstation typically used in conj...

Page 310: ...t the technique to 80 kVp and 3 mA While taking an X ray for approximately 10 seconds read the dosimeter and record the Dose Rate in mR sec 14 Divide the Dose Rate you recorded in step 13 by 3 and ent...

Page 311: ...nstall the DAP Fixture Tool P N 00 882027 01 with the Kiethley 150 cc ion chamber inserted in it onto the collimator cover DAP Fixture Tool 23 On the Generator s Control Panel manually close the Colli...

Page 312: ...on 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 250 For 12 inch System 130 Point and click on the DRIVE IRIS TO...

Page 313: ...0 2 For 9 inch Systems the Iris report is 32 2 For 12 inch Systems the Iris report is 27 2 43 On the DOS Keyboard press the X Key 44 Take a Normal Fluoro X ray for at least 10 seconds read and record...

Page 314: ...ose Area Product Calibration Window 53 Manually adjust the Collimator Rotation fully 4 CCW 54 Take a Fluoro X ray then on the DOS Keyboard press the X Key On the DOS Monitor on the DAP_CMP Report line...

Page 315: ...nch Systems the Iris report is 61 2 For 12 inch Systems the Iris report is 53 2 63 On the DOS Keyboard press the X Key 64 Take a Normal Fluoro X ray for at least 10 seconds read and record the Dose Ra...

Page 316: ...the box provided next to the Drive Iris To Button click on the box containing the following iris position For 9 inch System 470 For 12 inch System 450 Point and click on the Drive Iris To Button 74 T...

Page 317: ...2 For 9 inch Systems the Iris report is 90 2 For 12 inch Systems the Iris report is 90 2 83 On the DOS Keyboard press the X Key 84 Take a Normal Fluoro X ray for at least 10 seconds read and record th...

Page 318: ...t 70 kVp and 2 mA Convert the Keithley reading as follows 9 inch II Keithley reading times 0 372 12 inch II Keithley reading times 0 640 The result should be within 10 of the DAP displayed on the Left...

Page 319: ...anually adjust the technique to 50 kVp and 5 mA While taking an X ray for approximately 10 seconds read the dosimeter and record the Dose Rate in mR sec 10 Record the Dose Rate in mR second and mA in...

Page 320: ...he correct range using the manual controls on the Mainframe s Control Panel The utility s job is just to get the parameter in the ball park for the convenience of the technician 22 Install the DAP Fix...

Page 321: ...nch Systems the Iris report is 2 For 12 inch Systems the Iris report is 2 31 On the DOS Keyboard press the X Key 32 Take a Normal Fluoro X ray for at least 10 seconds read and record the Dose Rate in...

Page 322: ...the box provided next to the DRIVE IRIS TO Button click on the box containing the following iris position For 9 inch System 300 For 12 inch System 195 Point and click on the DRIVE IRIS TO Button 42 T...

Page 323: ...2 For 9 inch Systems the Iris report is 46 2 For 12 inch Systems the Iris report is 40 2 51 On the DOS Keyboard press the X Key 52 Take a Normal Fluoro X ray for at least 10 seconds read and record th...

Page 324: ...he DOSE AREA PRODUCT CALIBRATION Window 61 Manually adjust the Collimator Rotation to 180 2 62 Take a Fluoro X ray then on the DOS Keyboard press the X Key On the DOS Monitor on the DAP_CMP Report lin...

Page 325: ...inch Systems the Iris report is 73 2 For 12 inch Systems the Iris report is 67 2 71 On the DOS Keyboard press the X Key 72 Take a Normal Fluoro X ray for at least 10 seconds read and record the Dose R...

Page 326: ...box provided next to the DRIVE IRIS TO Button click on the box containing the following iris position For 9 inch System 500 For 12 inch System 500 Point and click on the DRIVE IRIS TO Button 82 Take...

Page 327: ...rkstation File 91 In the SAVE dialog 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 92 When the OVE...

Page 328: ...echanical Centering Central Imaging Axis Collimator Mechanical Centering Beam Alignment tool to Image Tube Centering Components Affecting Beam Alignment 44 Service Periodic Maintenance Contents Schema...

Page 329: ...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 1 2 3 4 Orient the tool so that the rulers...

Page 330: ...116 124 MM diameter 147 154 MM diameter 112 118 MM diameter 3 When measuring the image diameters verify no collimator iris or leaves are seen inside of the circular blanking 4 If the image diameters a...

Page 331: ...gnment tool attached to the image tube make a MAG2 exposure and mark the center of the alignment tool with a small dot using a marker 2 Change to the Normal MAG size and make an exposure Verify that i...

Page 332: ...Mechanically center collimator as follows a With the bore site tool attached to the bottom of the collimator loosen the collimator set screws see following picture 48 Service Periodic Maintenance Cont...

Page 333: ...tor Centering 3 Center the collimator in reference to the beam alignment tool using the collimator adjusting screws 4 When the collimator is centered properly tighten the collimator set screws 5 Remov...

Page 334: ...gnment tool see following picture 2 Calibrate Camera Decentration as follows a Select the MAG1 mode b Rotate the CCD Camera to the full Counter clockwise position c X ray through the beam alignment to...

Page 335: ...tion 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 51 Service Periodic Maint...

Page 336: ...gram Full CCW Mark Rotational Center of the camera 270 CW Mark 180 CW Mark 90 CW Mark Calibrating Camera Decentration g Draw two lines intersecting the 4 marks made on the monitor the point where the...

Page 337: ...ring 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 th...

Page 338: ...ering mechanism Screws securing the TEC cooling bar Loosen But Do Not Remove These Screws j While making a Fluoro exposure adjust the camera decentration screws to align the rotational center of the c...

Page 339: ...ove l 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 Calib...

Page 340: ...ible Diameter 9 Inch Normal Mode 216 MM 208 MM 9 Inch Mag1 144 MM 136 MM 9 Inch Mag2 124 MM 116 MM 12 Inch Normal Mode 290 MM 283 MM 12 Inch Mag1 207 MM 199 MM 12 Inch Mag2 154 MM 147 MM 9 Normal Mode...

Page 341: ...If using UtilitySuite a Select the View Pull down menu and select RUT b Select the File Pull down menu and select New then 9800 c Select the Connect Pull down menu and System When asked if you want th...

Page 342: ...ag1 field Mag2 field Minimum iris position mm 100 2 3 4 1 50 Use the ruler marks that intersect the center of the flat portion of the collimator iris leaves to determine the X Y film diameters Collima...

Page 343: ...on 2 3 4 1 50 Collimator Iris may only be partially visible 1 or 2 leaves Mag 1 Field Size Circular Blanking Mag 1 Field Size 59 Service Periodic Maintenance Contents Schematics Illustrated Parts Inst...

Page 344: ...le 1 or 2 leaves Circular Blanking 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...

Page 345: ...e diameters in a copy of the table below 23 Subtract the Image and Film diameters for each X Y axis and enter it as the difference Typically about 10 MM must be less than 28 MM to be within tolerance...

Page 346: ...that appear on the laptop 9 Click on the Calibrate Camera Stops button and follow the instructions that appear on the laptop 10 Click on the Enable Camera Adjustment button and follow the instruction...

Page 347: ...de selection on the form allows you to see the X ray images with or without the circular blanking applied to the image 9 Click on the Calibrate Stops button It takes about two minutes to complete this...

Page 348: ...k on Camera Calibration Camera Cooler Verification 1 Attach a DMM to the two solder pads on the TEC board on the camera see following diagram 2 Measure the voltage between the solder pads on the TEC c...

Page 349: ...the focus grid on the image tube 5 Verify that the following image tube input doses are produced while making NORMAL Magnification mode Auto Fluoro exposures through the copper filters Dose corrected...

Page 350: ...emporarily change them to verify or calibrate the Camera Iris 3 Place 2 millimeters of copper on the collimator cover so that the entire X ray beam passes through it 4 Attach a suitable dosimeter ion...

Page 351: ...ed iris stop set screw using a 6 flute Bristol Spline tool see next picture 12 While making an exposure in the Auto Fluoro exposure in the Normal Magnification mode move the iris gears to obtain the f...

Page 352: ...f the focus grid near the center at a 45 angle see drawing Beam Alignment section previously in this chapter 2 Turn off Auto Histo Use brightness and contrast adjustments to view resolutions 3 Verify...

Page 353: ...face of the focus grid near the center at a 45 angle 2 Carefully loosen the Lens Focus Set Screw 3 Adjust the focus using the Lens Iris Focus Lever Note On some systems you may have to slightly loose...

Page 354: ...Calibration Lens Focus Set Screw Lens Iris Focus Lever Lens Focus Set Screw and Iris Focus Lever 70 Service Periodic Maintenance Contents Schematics Illustrated Parts Installation...

Page 355: ...the laptop 3 Select the Workstation Calibration form 4 Click on the Monitor pull down button select the left monitor 5 Click on the Test Patterns pull down button and select Monitor Camera Alignment T...

Page 356: ...n measure 10 by 10 2 If the pattern centering needs adjustment use the X and Y Position Sliders to center the pattern on the monitor 3 Click on the Monitor pull down button and select the right monito...

Page 357: ...y CD 1 Connect the RUT cable to the laptop and the back of the workstation 2 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...

Page 358: ...n select the Right monitor 10 Repeat the Minimum and Maximum light setting adjustment for the right monitor 11 When both monitors produce the correct light levels select the File pull down menu and se...

Page 359: ...lider This will help prevent inadvertently changing the setting when you select it When a slider is selected it will have a dotted box around it allowing you to use the right and left arrows on the la...

Page 360: ...Both The message YOU MUST REBOOT THE SYSTEM IN ORDER FOR THE SAVED DATA TO BE APPLIED TO THE SYSTEM will be displayed Click on Ok 16 Turn the 9800 system OFF wait for about 10 seconds then turn the sy...

Page 361: ...nnector labeled NOT RS232 at the rear of the Fostec Light Source 2 On the Fostec light source front panel turn the aperture control to the number 5 position 3 Turn the brightness control knob to the r...

Page 362: ...amberts 0 1 should be produced by the light source 8 Move the switch on the light source control PCB to the HIGH position down A reading of 21 Foot Lamberts 0 5 should be produced by the light source...

Page 363: ...Calibration Fostec Light Source Control PCB connector and mounting screws 79 Service Periodic Maintenance Contents Schematics Illustrated Parts Installation...

Page 364: ...Calibration Brightness Control Aperture Control 80 Service Periodic Maintenance Contents Schematics Illustrated Parts Installation...

Page 365: ...reading of 1 7 Foot Lamberts 0 1 on the light meter 4 Move the switch on the light source control PCB to the HIGH position up and let it stabilize for about 10 seconds 5 Adjust R2 on the light source...

Page 366: ...librate and verify the light sensor Light meter Fostec light source and head with mounting bracket Fostec light source control PCB Light Sensor Verification 1 Verify that the light source is producing...

Page 367: ...ver the workstation light sensor 3 Connect the RUT cable to the laptop and the back of the workstation 4 Run the RUT program From the Tools pull down menu select Connect then Upload and Save to save a...

Page 368: ...eved 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 8 Select the Monitor Calibration form 9 Click on the...

Page 369: ...12 Turn the 9800 system OFF wait for about 10 seconds then turn the system back ON 13 Perform the light sensor verification test 85 Service Periodic Maintenance Contents Schematics Illustrated Parts I...

Page 370: ...Calibration 86 Service Periodic Maintenance Contents Schematics Illustrated Parts Installation...

Page 371: ...r Fuses 18 Capacitor Power Module 19 Circuit Breaker CB1 19 Fuses F1 F2 and F4 22 Stator Capacitor Transformer Assembly 22 Power Motor Relay PCB 24 Power Signal Interface PCB 27 Power Supply PS1 31 Po...

Page 372: ...Keyswitch 74 Power Motor Relay PCB 75 Power Signal Interface PCB 76 Power Supply PS1 78 Power Supply PS2 80 Power Supply PS3 82 Stator Capacitor Transformer Assembly 84 Vertical Column Lift Switches 8...

Page 373: ...ital Brake 111 Power Panel Assembly 112 Rear Wheels and Brakes 113 Roller Bearing Assembly 115 Vertical Column 116 Wig Wag Brake 119 3 Service Periodic Maintenance Contents Schematics Illustrated Part...

Page 374: ...jure on contact Charges can remain at lethal levels days or months after you unplug system from AC line WARNING Never allow anyone to use the system when any C Arm cover is removed Failure to heed thi...

Page 375: ...Cover WARNING Removing the front cover exposes dangerous AC line voltages on the Power Motor Relay PCB Disconnect Workstation from AC line before touching this PCB You must remove the front cover befo...

Page 376: ...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 6 Ser...

Page 377: ...Voltage Cable toward the C Move cover far enough forward to give unrestricted access to component you wish to service 5 Using great care to avoid electric shock use a VOM to check across capacitor bu...

Page 378: ...can remove the left side cover or front leg cover Follow these steps P3B High Energy Capacitor Bus Bars Front Cover Three Mounting Screws Right Side Cover Right Side Cover Details 1 Make certain Work...

Page 379: ...rge 5 Loosen coupler that connects steering handle and shaft to C Arm steering mechanism You may need to rotate steering handle to gain access to screws in coupler 6 Remove and retain two screws from...

Page 380: ...plug is disconnected from AC outlet 2 Turn off battery breaker 3 If hand control or footswitch are connected unplug them and set them aside 4 Remove Front cover Right Side cover and Rear cover as des...

Page 381: ...ns 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 Col...

Page 382: ...X ray tube You must remove this cover before replacing the X ray tube or removing the Collimator cover Follow these steps 1 Disconnect Workstation s AC power plug from AC outlet 2 Remove and retain t...

Page 383: ...kstation s AC power plug is disconnected from AC outlet 2 Remove X ray tube connector cover as described in previous screen 3 Remove and retain two torx screws that secure Collimator cover 4 Slide Col...

Page 384: ...lace see CCD Camera and Cover section later in this chapter The location of these screws varies depending on image intensifier size Refer to the following illustration to locate the screws on a 9 inch...

Page 385: ...the mounting screws for the two Control Panel assemblies 1 Disconnect Workstation power cord from AC outlet 2 Make sure Horizontal Extension brake is set 3 Remove and retain cap and screw from Horizon...

Page 386: ...traight Up Cross Arm Bearing Cover Removal Control Panels There are two identical Control Panels on the Vertical Column Each Control Panel holds a Key Display assembly and a Vacuum Fluorescent Display...

Page 387: ...akers and Fuses This section describes how to access and replace field serviceable circuit breakers and fuses in the C Arm Replacement procedures are not provided for fuses that mount in familiar snap...

Page 388: ...0391 or 880430 High Voltage Tank 900987 Column Lift 901166 IGBT Fan 881200 Column Lift Power Supply 901177 Image Intensifier 901226 or 901083 Control Panel Processor PCB 878488 Image Intensifier Power...

Page 389: ...es are always present at ALL these points EVEN WHEN THE SYSTEM IS POWERED DOWN Failure to read and follow all directions may result in death or serious injury from electric shock There are three cartr...

Page 390: ...lose the breaker by moving the handle toward the front of the C Arm The breaker handle goes to the middle position when the breaker trips Reset CB1 by moving the handle to the open position and then t...

Page 391: ...capacitors inside Capacitor Power module Refer to Capacitor Power module replacement procedure in this chapter for details 6 Remove Capacitor Power module from C Arm chassis Follow procedure described...

Page 392: ...same type capacity and physical size If a fuse checks OK with a meter but still looks burned or otherwise damaged replace it anyway F1 protects the output of the Battery Charger F1 is rated at 3 Amps...

Page 393: ...e that secures CB2 to Stator Capacitor Transformer module Retain attaching hardware for reuse 4 Withdraw CB2 from its mounting spot 5 Disconnect and tag wires from CB2 6 Connect wires you removed in s...

Page 394: ...eakers and fuses on the Power Motor Relay PCB which is located under the C Arm s front cover WARNING Do not replace any device on the Power Motor Relay PCB without first powering down the system Failu...

Page 395: ...Replacement Power Motor Relay PCB 25 Service Periodic Maintenance Contents Schematics Illustrated Parts Installation...

Page 396: ...s 12 Volt line to IGBT fan B1 F4 1A 67 135410 00 Protects 12 Volt lines at P11 pins 3 and 4 Pin 3 supplies power to cooling fan for the X ray tube F5 2A 67 135420 00 Protects the CCD camera cooler pow...

Page 397: ...NG Don t replace any fuse on the Power Signal Interface PCB without first powering down the system Failure to observe this precaution may result in potentially fatal electric shock or burns and may al...

Page 398: ...gnal Interface PCB Note All fuses listed in the following table are 250 Volt 5 x 20mm x1 inch tubular Slo Blo unless otherwise indicated 28 Service Periodic Maintenance Contents Schematics Illustrated...

Page 399: ...PCB P8 1 and 2 F5 6 3A 55 500351 00 Protects the 115VAC_PH line from the Workstation P5 4 that supplies AC power through LF1 to the Battery Charger P3 4 F6 3 15A 55 500345 00 Protects the 115VAC_PH_SW...

Page 400: ...ower Supply PS1 to the Control Panel Processor I O PCB P6 1 2 3 F13 2 0A 55 500344 00 Protects the 6 0_PS2 line P9 1 8 that supplies 6 0 Volts from Power Supply PS2 to the CCD Camera P7 1 5 F14 1 0A 5...

Page 401: ...ppears 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 overl...

Page 402: ...placeable 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 32 Service Periodic...

Page 403: ...condition of the L Arm and the attached C and you must exercise special care to avoid inadvertent movement of the L Arm due to the unbalanced condition It is possible for the unbalanced L Arm to rotat...

Page 404: ...nsifier or X ray tube 7 Install the replacement Image Intensifier or X ray tube 8 Remove and stow the safety bolt 9 Check the C Arm for proper operation and return it to service 34 Service Periodic Ma...

Page 405: ...rack where it provides an edge connector for the Fluoro Functions PCB X ray Controller PCB and High Voltage Supply Regulator PCB As the following illustration shows there are number of connectors on t...

Page 406: ...assembly 6 Remove torx screws that secure Backplane assembly to card rack Retain screws 7 Remove Backplane assembly from card rack 8 Install Backplane assembly to card rack assembly Secure with screws...

Page 407: ...Charger Battery Charger PCB 1 Turn off Workstation and remove Workstation s AC plug from facility outlet 2 Remove Rear cover from C Arm 3 Remove Component Tray cover from C Arm 4 Remove connectors fr...

Page 408: ...0 Install nuts removed in step 6 on mounting studs Finger tighten only 11 Install torx screws removed in step 5 through mounting holes at bottom of Battery Charger PCB 12 Secure all mounting hardware...

Page 409: ...e AC power is applied to the C Arm through the Interconnect Cable Battery Charger Indicator Lamp Use the following procedure to replace the lamp 1 Turn off Workstation and remove Workstation s AC powe...

Page 410: ...ewdriver to gently pry off metal ring that secures lamp assembly to Power Panel Refer to the following illustration for additional details Indicator Lamp Mounting Details 7 Remove the indicator lamp f...

Page 411: ...red Battery Pack wire terminal from P3B on the Capacitor Power module 4 Near the Capacitor Power module you will notice a red and black wire connected together and secured by a plastic strap Notice al...

Page 412: ...11 While pulling on the fish tape gently push the left Battery Pack into place in its battery compartment Do the same thing with the right Battery Pack 12 Connect the red wire with the blue terminal...

Page 413: ...er 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 43 Service Periodic Maintenance...

Page 414: ...Remove Right Side cover from C Arm 5 USING GREAT CARE TO AVOID ELECTRIC SHOCK disconnect battery cables from P1A and P3B on Capacitor Power Module 6 Locate two battery cables just above P1A and P3B T...

Page 415: ...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 po...

Page 416: ...Replacement Capacitor Power Module Connectors 46 Service Periodic Maintenance Contents Schematics Illustrated Parts Installation...

Page 417: ...n in the following illustrations Follow these steps to replace the CCD Camera assembly 1 Turn off Workstation and disconnect it from the AC outlet 2 Place the C Am in a horizontal position so CCD came...

Page 418: ...Replacement Camera Cover EMI Shield CCD Camera Image Intensifier CCD Camera Location 48 Service Periodic Maintenance Contents Schematics Illustrated Parts Installation...

Page 419: ...up and disconnect the wires that run from the EMI Shield to the Camera 7 Remove four screws that secure Thermoelectric Cooler to camera Screws appear in next illustration 49 Service Periodic Maintenan...

Page 420: ...the following illustration Follow these steps to replace the Collimator 1 Turn off Workstation power switch in the OFF position 2 Place the C arm in a horizontal position so the Collimator is easy to...

Page 421: ...remove the Collimator 7 Reassemble in reverse order 8 Check the beam alignment and adjust Z and X axis of the Collimator if necessary Collimator Collimator Cover Collimator Location 51 Service Periodi...

Page 422: ...ection of this chapter 3 Disconnect and tag wiring from the CPP I O PCB 4 Remove two screws that secure the CPP IO PCB to the chassis 5 Remove the CPP I O PCB from its connection to the CPP PCB 6 Remo...

Page 423: ...Replacement Control Panel Processor PCB 53 Service Periodic Maintenance Contents Schematics Illustrated Parts Installation...

Page 424: ...Follow these steps to replace the Control Panel Processor I O PCB 1 Turn off Workstation and disconnect its power plug from the AC outlet 2 Remove Cross Arm Bearing cover as described in the Equipmen...

Page 425: ...g from the AC outlet 2 Remove Cross Arm Bearing cover as described in the Equipment Covers section of this chapter 5 Remove three screws from each end of the Control Panel that houses the suspect Fast...

Page 426: ...r PCB 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 1 Turn Workstation off and remove...

Page 427: ...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 Please r...

Page 428: ...disconnect the steering linkage 3 Remove four screws that secure metal cover to the Electronic Card Rack 4 Remove the Fluoro Functions PCB from the slot located to the far left in the Electronic Card...

Page 429: ...the Generator Driver PCB High Voltage and Control Cable Assembly WARNING The High Voltage and Control Cable Assembly carries highly lethal DC voltage even when the system is powered down and disconnec...

Page 430: ...le is field replaceable It is not possible to replace only a wire or two in the cable Assembly You can however repair or replace broken wires or connectors at either end of the cable The following tab...

Page 431: ...e Stator Run Voltages J3 Camera P1 Interconnect Cable Connector J1 Video to Workstation J4 Camera P1 Interconnect Cable Connector Pilot Tone sync signal to Workstation ANODE HV Tank ANODE X ray Tube H...

Page 432: ...ting resistance before proceeding 4 Peel back the rubber cable cover where the cable assembly enters the C and loosen the three setscrews that hold it in place 5 Carefully disconnect and pull all cont...

Page 433: ...he High Voltage Supply Regulator PCB is located in the Electronic Card Rack as shown in the following illustration Follow these steps to replace the High Voltage Supply Regulator PCB 1 Place the Works...

Page 434: ...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 voltage...

Page 435: ...ng linkage 4 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 det...

Page 436: ...on tank and disconnect J2 from P2 on tank 11 Follow procedure provided elsewhere in this chapter to remove Filament Driver PCB 12 Follow procedure provided elsewhere in this chapter to remove IGBT Sn...

Page 437: ...ex socket screws and associated washers that secure right hand side of High Voltage tank to C Arm chassis High Voltage Tank Fasteners Right Side 67 Service Periodic Maintenance Contents Schematics Ill...

Page 438: ...ct 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 68 Service Periodic Maintenance Contents...

Page 439: ...wn in the following illustration Its heat sink attaches to the High Voltage Tank IGBT Snubber PCB IGBT Snubber Location Use the following procedure to replace the IGBT Snubber WARNING Dangerous voltag...

Page 440: ...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 Refer to Capacitor Power...

Page 441: ...t 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 71 Service Periodic Maintenance Con...

Page 442: ...be 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 1 Turn the Workst...

Page 443: ...L Arm end cap and install the C Arm safety bolt as described in the L Arm replacement procedure provided elsewhere in this chapter 5 Remove the CCD Camera as described elsewhere in this chapter 6 Remo...

Page 444: ...tor Footswitch Connector Keyswitch Follow these steps to replace the Keyswitch 1 Remove the Front Cover 2 Remove the Right Side Cover 3 Remove the Rear Cover and disconnect the steering linkage 4 Remo...

Page 445: ...e 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 Power Motor Relay PCB The...

Page 446: ...5 Install replacement Power Motor Relay PCB 6 Reassemble C Arm and check it for proper operation Power Signal Interface PCB The Power Signal Interface PCB is located under the Left Side Cover as show...

Page 447: ...se 4 Disconnect and tag connectors from J1 and P2 through P11 5 Inspect replacement Power Signal Interface PCB for any obvious damage or missing components 6 Attach connectors to J1 and P2 through P11...

Page 448: ...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 78 Service Periodic Maintenance Conten...

Page 449: ...nd retain four torx screws and lockwashers that secure PS1 to swing out panel 8 Lift PS1 out of C Arm 9 Inspect replacement power supply assembly for any obvious damage or missing components 10 Mount...

Page 450: ...ement Power Supply PS2 PS2 mounts under the Left Side Cover as shown in the next illustration Multi Output Power Supply PS2 80 Service Periodic Maintenance Contents Schematics Illustrated Parts Instal...

Page 451: ...d its heat sink to C Arm chassis 6 Lift PS2 and heat sink out of C Arm 7 Inspect replacement power supply and heat sink for any obvious damage or missing components 8 Mount replacement power supply as...

Page 452: ...d retain four torx screws and washers that secure PS3 to C Arm chassis 5 Disconnect POWER CONTROL and OUTPUT connectors from PS3 6 Lift PS3 out of C Arm 7 Inspect replacement power supply for any obvi...

Page 453: ...Replacement Power Supply PS3 83 Service Periodic Maintenance Contents Schematics Illustrated Parts Installation...

Page 454: ...e of the assembly and supplies AC power to multi output power supply PS2 Stator Capacitor Transformer Assembly Follow these steps to replace the Stator Capacitor Transformer Assembly 1 Turn off Workst...

Page 455: ...wer plug from facility s AC outlet 2 Remove Cross Arm Bearing Cover as described elsewhere in this chapter 3 Loosen suspect switch by removing its locking ring and pushing the switch upward through Cr...

Page 456: ...Replacement Cross Arm Bearing Cover Verticle Column Lift Switches Vertical Column Lift Switches 86 Service Periodic Maintenance Contents Schematics Illustrated Parts Installation...

Page 457: ...tation and remove its power plug from facility s AC outlet 2 Remove the Rear Cover and disconnect the steering linkage 3 Remove the Electronic Card Rack Cover 4 Remove suspect X ray Controller PCB 5 I...

Page 458: ...Replacement X ray Controller PCB X ray Controller PCB Location 88 Service Periodic Maintenance Contents Schematics Illustrated Parts Installation...

Page 459: ...tlet 2 Remove Cross Arm Bearing Cover as described elsewhere in this chapter 3 Loosen suspect switch by removing its locking ring and pushing the switch upward through Cross Arm Bearing cover 4 Discon...

Page 460: ...Replacement Cross Arm Bearing Cover X ray On Switch X ray On Pushbutton 90 Service Periodic Maintenance Contents Schematics Illustrated Parts Installation...

Page 461: ...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 Tub...

Page 462: ...om facility s AC outlet 2 If your system is not a Super C install C Arm Safety Bolt Follow the procedure provided elsewhere in this chapter 3 Remove the Collimator Follow the procedure provided elsewh...

Page 463: ...all freely from the C arm The X ray tube is heavy about 40 pounds and expensive Get somebody to help you hold the X ray tube steady in the following step and prevent it from falling to the floor 10 Ge...

Page 464: ...m each side of the Wheel assembly and retain the plugs 4 Remove the Allen Screw from each hole plug 5 Remove four screws two each side from the Wheel Covers located where the decals were 6 Remove the...

Page 465: ...Replacement Brake Pedal Actuator Shaft Wheel Brake Cam Rear Caster Wheel Cable Pusher Cable Pusher Assembly 95 Service Periodic Maintenance Contents Schematics Illustrated Parts Installation...

Page 466: ...llow the procedure provided in this chapter under Electrical and Electronic Assemblies to remove the Image Intensifier from the C THIS INCLUDES INSTALLING THE C ARM SAFETY BOLT 3 Remove the four hex k...

Page 467: ...he Flip Flop assembly as described elsewhere in this chapter 3 Remove the mechanical stop hex bolt from the Cross Arm as shown next Cross Arm Mechanical Stop Removal 4 Use a pin punch and hammer to pu...

Page 468: ...when you remove the Cross Arm in the following step This is normal 6 Grasp L Arm handle and pull Cross Arm out of the Cross Arm Bearing Block assembly as shown below Cross Arm Removal 98 Service Peri...

Page 469: ...d in this chapter 4 Remove Cross Arm from Cross Arm Bearing Block by following procedure in this chapter 5 Remove six screws that secure the Control Panel Processor and Control Panel I O PCBs to beari...

Page 470: ...oting wire locations and routing Tagging the wires and connectors will be helpful in reassembly 10 Remove four hex keyed bolts that secure Bearing Block assembly to the Lift Column Bearing Block Assem...

Page 471: ...rew 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 be...

Page 472: ...Shaft Brake Handle Cross Arm Brake Assembly Follow these steps to replace the Cross Arm brake pad 1 Remove the hole plug in the Cross Arm Brake Handle 2 Remove the torx screw that secures the Cross A...

Page 473: ...e 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 ax...

Page 474: ...y to loosen the axle 4 Remove the axle and the damaged wheel 5 Install replacement wheel and secure the axle 6 Reinstall adhesive axle cover over axle screw To replace a cable pusher 1 Jack mounting p...

Page 475: ...a new Front Caster assembly Refer to the Illustrated parts manual for the current part number Generator Tray The following paragraphs describe how to replace the Generator Tray 1 Remove five screws th...

Page 476: ...le the L Arm may result in the gas spring spinning the L Arm or Cross Arm This could result in serious personal injury 1 Pull back the Cross Arm decals from the end of the Cross Arm nearest the L Arm...

Page 477: ...Handle Insert Handle Cap Spherical Adjustment Handle Lower handle assembly is the same as upper handles L Arm Handle Insert Handle Retaining Ring Actuator Standard C arm sheet 1 107 Service Periodic M...

Page 478: ...haft Ring Cover Brake Shoe Lock Nut Lock Washer Brake Drum Bearing Brake Shoe Dowel Pin Bearing Bearing Bearing Bearing Bearing Spring Pin Spring Pin Label Standard C arm sheet 2 108 Service Periodic...

Page 479: ...acement Handle Retaining Ring Handle Insert Actuator Brake Shaft O Ring Drag Adjustment Screw Dowel Pin Super C sheet 1 109 Service Periodic Maintenance Contents Schematics Illustrated Parts Installat...

Page 480: ...Bearing Bearing Brake Shoe Cross Arm Spring Pin Dowel Pin Stop Plate Spacer Bearing Bearing Lock Washer Lock Nut Cap Label Super C sheet 2 110 Service Periodic Maintenance Contents Schematics Illustr...

Page 481: ...dle Brake Pivot Brake Shaft Brake Cam Cylinder Bearing Brake Handle Friction Clutch Roller Yoke Cylinder Bearing Orbital Brake Assembly If the Orbital brake does not prevent C Arm orbital rotation you...

Page 482: ...wer Panel Interface PCB and the Generator Tray 6 Disconnect and route cables from Power Panel Door 7 Disconnect cables from Power Motor Relay PCB and pull the cables through This is done so major asse...

Page 483: ...embly perform the following 1 Remove two screws from the End Cap Cover and remove the End Cap 2 Jack up the Wheel Axle approximately 2 2 5 inches 3 Loosen one of the turnbuckles on the steering chain...

Page 484: ...Turnbuckles View from Underneath Axle 4 Remove the chain from around the Wheel s sprocket 5 Remove the Allen screw that secures caster to axle 114 Service Periodic Maintenance Contents Schematics Illu...

Page 485: ...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: ...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 1 Stand the Mobile C...

Page 487: ...lacement C Arm Frame Stood on End 2 Remove the four hex keyed bolts that secure the Vertical Column to the C Arm Frame 117 Service Periodic Maintenance Contents Schematics Illustrated Parts Installati...

Page 488: ...Mounting Bolts 3 Separate the Vertical Column from the Frame and lay the Vertical Column on the floor Lay the Frame down also Vertical Column Assembly 118 Service Periodic Maintenance Contents Schema...

Page 489: ...g Block Cover Cross arm 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 Perform the following steps Note...

Page 490: ...ing spinning the L Arm or Cross Arm This could result in serious personal injury 2 Following the procedures remove the Bearing Block Cover Control Panel ASM CPP and CPP I O PCBs Cross Arm and Bearing...

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