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Soredex Cranex Novus e, Service Manual

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44 

         Service 

manual

3. Circuit Boards - L1800, Generator Board 

CRANEX

®

 Novus e

L1800 - Description

The Generator board receives kV and mA reference 

signals from L1200 as PWM modulated signal. Based 

on the kV-reference value, the Generator board gener-

ates the corresponding high voltage between the cath-

ode and anode of the x-ray tube. Based on milliampere 

reference value, the generator board generates pre-

heat current (to warm up the 

fi

 lament before x-rays are 

switched on) and 

fi

 lament current  (during exposure). 

The Generator board receives kV and mA feedback 

signals from the tubehead that are used to monitor and 

adjust the generated values. The Generator board pro-

duces its own supply voltages.

Summary of Contents for Cranex Novus e

Page 1: ...Service Manual for the CRANEX Novus e Dental X ray Unit 208710 rev 1 2013 01...

Page 2: ......

Page 3: ...RANEX Novus e Dental X ray Unit Medical Device Directive 93 42 EEC Number 208710 rev 1 2013 01 Original approved English language version Manufactured by SOREDEX PaloDEx Group Oy Nahkelantie 160 Tuusu...

Page 4: ...n that is ac curate and up to date However our policy of continual product devel opment may result in changes to products that are not reflected in the product documentation Therefore this document sh...

Page 5: ...Mechanical safety 2 Warning Electrical Safety 2 Caution electrostatic discharge 3 Warning Explosion hazard 4 Warning Cleaning the unit 4 1 4 Unauthorized Modifications 4 1 5 Disclaimer 4 1 6 Yearly m...

Page 6: ...Exposure logic 19 Position control 20 A overview of the Imaging Chain 20 2 6 Wiring diagrams overview 22 2 7 Block diagram 25 2 8 Fuse diagram 26 3 Circuit Boards 27 3 1 L900 Display adapter 27 3 2 L1...

Page 7: ...E20 PCF POWERGOOD signal is down 67 Error E22 Button stuck 67 4 3 Problems while preparing the unit for an exposure 68 Image of emergency button appears on main display 68 The side control panel Retur...

Page 8: ...rmware zip file 91 6 2 Upgrading the unit firmware 91 7 Replacing parts 92 7 1 Removing covers 92 7 2 Replacing the tubehead 93 Tools required 93 Replacement parts 93 Replacing the tubehead 93 Calibra...

Page 9: ...e covers 104 8 2 Checking and Aligning the CCD Sensor 104 8 3 Checking and adjusting the position of the collimator 106 8 4 Checking and adjusting the Chin Support 109 8 5 Checking and adjusting the f...

Page 10: ...Servicing precautions Only service personnel trained and approved by the manufacturer of the unit are allowed to service the unit Before attempting to service the unit make sure that you know how to...

Page 11: ...r replacing mechanical parts or installing ac cessories Be careful when operating the unit not to get body parts or clothing trapped between moving parts During operation some surfaces and components...

Page 12: ...ble follow the guidelines below Leave all new or replacement circuit boards and electrical parts in their protective packaging until the boards are needed Before handling circuit boards and electrical...

Page 13: ...iagnostic source assembly will fully meet the United States of America Federal Performance Standards for Diagnostic X Ray Systems and Their Components 21 CFR 1020 30 32 provided no compo nents or part...

Page 14: ...car ried out PROTECT YOURSELF FROM RADIATION 1 Connect the probe of a DMM to test pin TP18 mAfb and the probe to TP17 GND on the L1800 Generator board 2 Select service command exp and an exposure tim...

Page 15: ...ance V 63 2 86 0 1 2 76 2 96 66 3 00 0 1 2 90 3 10 70 3 18 0 1 3 08 3 28 73 3 32 0 1 3 22 3 42 77 3 50 0 1 3 40 3 60 If the values are not within the tolerances recali brate the Generator board see se...

Page 16: ...ey and drive the unit down Make sure that the unit stops moving at its lowermost position Manually rotate the rotating unit to one of its end posi tions and then press the return button and make sure...

Page 17: ...n good condition Also check that all the labels are attached to the unit and that they are all legible Fire risk WARNING Disconnect the unit from the main power supply before carrying out the next tas...

Page 18: ...environmentally friendly or hazardous These parts must be disposed of in accordance with all lo cal national and international regulations regarding the disposal of non environmentally friendly or ha...

Page 19: ...ray exposures of any other part of the human anatomy The unit can be used to take adult panoramic full width child panoramic reduced width TMJ and bitew ing images The unit can operate using voltages...

Page 20: ...rts and assemblies 1 Motorized carriage 2 Emergency stop button Press to stop rotate to release 3 Exposure switch 4 On Off switch rear of the column 5 Column 6 CCD sensor 7 Tubehead Tubehead 7 CCD sen...

Page 21: ...ption CRANEX Novus e 9 Patient positioning mirror 10 Frankfort light 11 Midsaggital light 12 Focal through light 13 Head support 14 Patient handles 15 Chin support A Chin rest and bite block B Chin re...

Page 22: ...e patient positioning lights on and off B Up down keys C Return key drives rotating unit to the patient in out position PIO 17 Main control panel D Program keys adult pan child pan TMJ bitewing option...

Page 23: ...14 Service Manual 2 Unit Description CRANEX Novus e 2 3 Unit dimensions...

Page 24: ...The unit can also be used free standing but it must be attached to the show stand part no 9802666 The motorized carriage is attached to the column and can slide up and down the column Z movement for...

Page 25: ...ched to the bot tom of the vertical carriage It comprises handgrips for the patient to hold and the patient support The chin rest supports the patients lower jaw and the two temple supports on the hea...

Page 26: ...power to L1800 Generator Board and L1500 Power Supply board which supplies low voltages to all the other circuit boards The power for the AC motor Z Motor comes from an autotransformer that is automa...

Page 27: ...ontrols unit PC communications The necessary unit settings and parameters for all the imaging programs are stored in the memory which is also on L1200 Motors and motor control There is one stepper mot...

Page 28: ...osure button is pressed and held down The Generator board receives the correct kV and mA references from the CPU A few milliseconds after the exposure button is pressed Expsw preheat is enabled Preh A...

Page 29: ...assumes that the unit is ready to take an exposure Image acquisition is controlled by the DSD software component which is installed in the PC connected to the unit When an exposure is taken L1200 the...

Page 30: ...he output voltage of the CCD is fed to a 14 bit A D converter The CCD sensor board sends the image data now 12 bits to the CPU board where they are saved on the SDRAM The image information is transfer...

Page 31: ...6 7 02725 029 0 17 0 52 6 7 0 52 6 7 326 287 6723B 9 6 5 6 5 0 16 6 7 32685 6 7 7 51 76 83 2 1 7 51 7 0 16 7 5 1 1 1 9 9 B B B B 326 287 6723B 9 6 5 51 1 B 7 9 9 51 1 B 7 03 02 8 0 9 7 5 7 5 5 21 26...

Page 32: ...02 78 7 78 7 0 0 1 93 0 3 1 78 78 3 1 93 0 1 1 1 35 35 0 3 0 0 3 0 1 5 725 2 5 78 66 0 DVFDGH RDUG 5D 7XEH 0 16 7 5 1 1 3 7XEHKHDG LQWHUIDFH ERDUG 02 1 9 9B 9 1 9 1 02 9 9B 9 1 9 1 02 9 1 9B 9 1 03 02...

Page 33: ...QRW XVHG 63 5 B B 1 63 5 67 57 QRW XVHG 352 0 7 QRW XVHG 728 6 5 1 1 6 96 1 5 5 5 5 5 5 1 1 1 1 9 9 5 8 1 RSWUH 9 9 9 B 1 B 1 B 1 2 5 9 9 1 1 6 53B B 1 6 53B B 1 6 53B B 1 6 53B B 1 VKDUS 352 0 7 QRW...

Page 34: ...CRANEX Novus e 2 Unit Description Service manual 25 2 7 Block diagram...

Page 35: ...26 Service manual 2 Unit Description CRANEX Novus e 2 8 Fuse diagram...

Page 36: ...ay adapter Service manual 27 3 Circuit Boards NOTE An asterisk after a signal name indicates an active low level signal 3 1 L900 Display adapter L900 Location In the rotating unit on the CCD sensor si...

Page 37: ...display touch screen interface L900 reads touch screen data and sends it to L1200 CPU board via the SPI interface L1200 CPU board drives the display data throught the L900 board L900 board produces s...

Page 38: ...ircuit Boards L1200 CPU Board Service manual 29 3 2 L1200 CPU Board L1200 Location In rotating unit on the CCD sensor side To access re move the sensor external cover see section 7 1 L1200 Field repla...

Page 39: ...er for PC connection I O buffers and a 14 bit A D converter The image data are saved in an SDRAM L1200 Indicator LEDs LED Colour Indicates D6 green 5V on D8 green Ethernet signal activity D9 green 10...

Page 40: ...CRANEX Novus e 3 Circuit Boards L1200 CPU Board Service manual 31 L1200 Block Diagram...

Page 41: ...3 Circuit Boards L1500 CCD Power Supply CRANEX Novus e 3 3 L1500 CCD Power Supply L1500 Location In the rotating unit on the the CCD sensor side To access remove sensor external cover L1500 Field repl...

Page 42: ...roduce the other voltages that the unit requires The CCD sensor require 3 3V 3 3V 3V 15V 9 4V 5V L900 and the 3 phase stepper motor require 24V L1200 and peripheral electronics require a regulated 5VD...

Page 43: ...34 Service manual 3 Circuit Boards L1500 CCD Power Supply CRANEX Novus e L1500 Block diagram...

Page 44: ...green 3 3V_CCD on D12 green 5V on D13 green 5 0V_CCD on D14 green 9 4V_CCD on D16 green 24V on D17 green 3 3V on L1500 Test Points Number Description Value TP1 24V 24V TP5 CCDENA 5V on 0V off TP7 5 0V...

Page 45: ...36 Service manual 3 Circuit Board L1600 Z Motor Driver CRANEX Novus e 3 4 L1600 Z Motor Driver L1600 Location On the upper shelf To access remove shelf upper cover see section 7 1...

Page 46: ...of the vertical carriage are used to activate the AC motor Micro switches at the top and bottom of the column monitor the upper and lower positions of the Z move ment Based on the logic on the circuit...

Page 47: ...38 Service manual 3 Circuit Board L1600 Z Motor Driver CRANEX Novus e L1600 Block diagram...

Page 48: ...on D4 red ESTOP on Emergency stop button is on D5 green SET 100V autotransformer tapping enabled D6 green SET 115V autotransformer tapping enabled D7 green SET 230V autotransformer tapping enabled L16...

Page 49: ...40 Service manual 3 Circuit Boards L1700 Connector Board CRANEX Novus e 3 5 L1700 Connector Board L1700 Location In the rotating unit on the the CCD sensor side To access remove sensor external cover...

Page 50: ...signals from the tubehead kVfb mafb and tubeheat and scales the voltage swing 0 5V linearly to 1 25V 3 75 V which is the input for the A D converter on the CPU board L1700 also includes external warni...

Page 51: ...42 Service manual 3 Circuit Boards L1700 Connector Board CRANEX Novus e L1700 Block Diagram...

Page 52: ...h the Generator Board until the capaci tors have discharged After switching the unit off wait 10 minutes for the capacitors to discharge When LED H1 goes out the capacitors are dis charged L1800 Locat...

Page 53: ...es the corresponding high voltage between the cath ode and anode of the x ray tube Based on milliampere reference value the generator board generates pre heat current to warm up the filament before x...

Page 54: ...CRANEX Novus e 3 Circuit Boards L1800 Generator Board Service manual 45 L1800 Block diagram...

Page 55: ...27V5 TP2 5V FILTERED MAPWM TP3 GND 0V TP4 15V TP5 NOT USED TP6 NOT USED TP7 HVGND 0V TP8 17V TP9 VDD 15V_HVGND TP10 FILTERED KVPWM TP11 mAref Calibrated by the CPU TP12 kVref Counted from values 1V 22...

Page 56: ...t touch this board when the unit is switched on There is high voltage on the large heat sink on this board when the unit is switched on Do not touch this board until the capacitors have discharged Aft...

Page 57: ...60Hz The board produces the 380Vdc for the generator board The board also has auxiliary flyback converter that produces the lower raw voltages for the L1500 power supply board The major features of t...

Page 58: ...CRANEX Novus e 3 Circuit Boards P1910 PFC Board Service manual 49 P1910 Block diagram...

Page 59: ...Service manual 3 Circuit Boards P1910 PFC Board CRANEX Novus e P1910 Indicator LEDs LED Colour Indicates A5 green 380V A8 green 27V5 A9 green 20V A10 green 17V_HVGND A15 green 15V P1910 Test Points No...

Page 60: ...L1300 Interface Board L1300 Location At the rear of the column near the base L1300 Field replaceable parts None L1300 Description L1300 serves as an external interface to the outside environment The...

Page 61: ...52 Service manual 3 Circuit Boards L1300 Interface Board CRANEX Novus e L1300 Indicator LEDs None L1300 Test Points None...

Page 62: ...L2100 Field replaceable parts None L2100 Description L2100 is used to detect the position of the rotating unit L2100 has two optical switches that generate sensor signals ROTSW1 and ROTSW2 according t...

Page 63: ...54 Service manual 3 Circuit Boards L2100 Rot pos sen CRANEX Novus e L2100 Indicator LEDs None L2100 Test Points None...

Page 64: ...tating unit above the head support To ac cess remove the head support lower protective cover see section 7 1 R5100 Field replaceable parts None R5100 Description R5100 controls the 3 phase stepper mot...

Page 65: ...Indicates D1 green 5V on D2 green 24V on R5100 Test Points Number Description Value TP1 GND 0V TP2 VREF 0 97V 0 1V when HICUR 1 1 95V 0 1V when HICUR 0 default value TP3 CLK 5V freq 15kHz TP4 ENA 5V...

Page 66: ...ver see section 7 1 CCD Field replaceable parts None Inside the CCD Sensor there is the CCD Sensor board The board cannot be accessed CCD Description CCD sensor converts X ray radiation to visible lig...

Page 67: ...ailable Off TDI frequency is between 0 50Hz On TDI frequency is between 100 Hz 1kHz Flashing TDI frequency is between 50 100Hz or above 1kHz Power Supply Indicate the different voltages required by th...

Page 68: ...sensor CCD TxD will also be off NOTE If CCD TxD is off CCD RxD is on and the CCD status LED flashes during and after image capture it indicates that the CCD sensor tried to receive the image but the...

Page 69: ...lter CRANEX Novus e Filter Field replaceable parts None Filter Description Sensor filter board is a low pass type RF filter board which filters electromagnetic interference EMI from all CCD signal and...

Page 70: ...egories of error code H user errors and E system errors When an error code appears on the display the unit will stop working The unit cannot be operated while the er ror code is on the display To clea...

Page 71: ...alue Make sure that all cables are correctly and securely at tached to their respective connectors Connectors must not be loose or misaligned If the connector has a lock ing mechanism make sure that i...

Page 72: ...r supply cable from the unit and then replace the main fuses 2 They are located below the main power supply cable at the rear of the column The fuse ratings are stated in chapter 2 5 Electrical descri...

Page 73: ...e on D13 5V on when CCDENA is active D14 9 9V on when CCDENA is active D16 24V must be on D17 3 3V must be on Test jumper J23 can be used to set on CCDENA Open default closed CCDENA enabled If the LED...

Page 74: ...ice command calib line voltage calibration set the serial number If the error message reappears after recalibration L1200 is faulty Replace see 7 5 Replacing circuit boards Error E5 Line voltage out o...

Page 75: ...Error E18 Display not connected Check Service Assistant for information about this error code CAUSE A Cable from L1500 to L900 faulty SOLUTION A Replace cable CAUSE B L1500 faulty SOLUTION B Replace L...

Page 76: ...faulty replace Error E20 PCF POWERGOOD signal is down CAUSE No power signal SOLUTION Check to see if the signal is present on L1500 If the signal is not present replace P1910 If signal is present the...

Page 77: ...tepper motor is faulty The rotating unit cannot position itself correctly and keeps on rotating until the timeout E 9 stops move ment because L2100 is faulty The rotating unit does not move when the R...

Page 78: ...to the installation manual If the cable is okay replace the L1600 Z motor driver None of the lights come on CAUSE A The emergency stop button has been pressed down The emergency stop icon appears on m...

Page 79: ...s F1 and F2 Replace if blown If after replacing fuse F2 lamp LA1 comes on but LED D1 still does not come on check cables between L1600 and L1700 If the cables are OK check if D12 is on on L1500 If it...

Page 80: ...D Check to see if D3 on L1600 is on If on it indicates that the top or bottom Z movement end microswitch has not been activated CAUSE E The autotransformer internal thermal switch has opened The therm...

Page 81: ...and L1600 Z motor driver or between L1600 and L1700 Connector board or between L1700 and L1200 CPU board or between L1700 and L1800 Generator board SOLUTION C Replace faulty cable s Error code H1 Exp...

Page 82: ...and kV feedback signals from the tubehead to see if the tube voltage and current are correct Software Check See S2terminal and service functions If the feedback values are not correct use the exp ser...

Page 83: ...work correctly check the hardware Hardware check Remove the cables from the tubehead side of the rotat ing unit Check the cables between the Tubehead and the L1800 Generator board Replace them if they...

Page 84: ...he CCD sensor could not configure itself SOLUTION Check the condition of all the cables and connectors to from the CCD sensor as well as the cables from CPU to L1700 and cables between L1700 and L1500...

Page 85: ...he CCD sensor to L1200 was interrupted during the exposure SOLUTION Refer to the trouble shooting information given in error code E11 Error E13 CCD configuration checksum failure CAUSE L1200 CPU faile...

Page 86: ...has cooled to the correct tem perature If the error message appears even if the unit has not been used a lot switch the unit off and then on again CAUSE B The tube heat signal is missing SOLUTION B If...

Page 87: ...oducing bad quality images first make sure that the user is positioning the patients correctly For information on how to position the patient refer to the User s Manual A badly aligned unit If patient...

Page 88: ...ommand prompt key in cd space and then the path where the s2terminal files are installed e g c s2terminal _________________________________________________________________ cd c s2terminal ____________...

Page 89: ...lear option to clear it help display info on command help cmd or h cmd imagecalib takes a calibration image for calibrating the DSD ip configure ip address kVcheck test kV mA combinations log service...

Page 90: ..._______________ Information about the selected function will ap pear at the bottom of the list of functions 10 To display information about an individual command key in help cmd where cmd is the comma...

Page 91: ...a tion of the procedure which will last up to three min utes During the calibration procedure you will hear the exposure warning signal and calibration values current at the start and calibrated at th...

Page 92: ...oduct calibration value value Displays the dose area product DAP calibration value Use values 8mA 70kV and 1sec FACTORY USE ONLY dc takes dark current image dc dark current Is used to check if the CCD...

Page 93: ...beam alignment during unit installation refer to the Installation manual for more information and to trouble shoot the tubehead and generator board CAUTION Protect yourself from radiation when using t...

Page 94: ...otal number of exposures taken with the tubehead To zero the exposure counter enter clear ____________________________________________ expcnt clear ____________________________________________ and the...

Page 95: ...configured Refer to section 3 5 Configuring the communication link to the PC in the installation manual NOTE The IP address can also be reset using the driver tools kVcheck test kV mA combinations Dis...

Page 96: ...ge Recalibrates the mains voltage if L1200 CPU board is replaced Use a RMS multimeter to measure the actual supply voltage from the mains plug L1910 or L1500 and then enter this value ________________...

Page 97: ...values should change ____________________________________________ sector 0 sector 1 sector 2 sector 3 ____________________________________________ which indicates that the optosensors on the L2100 bo...

Page 98: ...configuration ____________________________________________ restore configuration ____________________________________________ and then press Enter setserno configure serial number and MAC accordingly...

Page 99: ...n carrying out this procedure Press and hold the exposure switch to take a still image exposure NOTE The exp command described earlier generates x rays but does not activate the sensor or move the rot...

Page 100: ...ELEOcore_r36 rbf Graphics file ImagesPO_r1 bin Upgrade manifest file ELEO r1 txt 6 2 Upgrading the unit firmware 1 Extract the zip files into a suitable path on your PC 2 Open the terminal connection...

Page 101: ...92 Service manual 7 Replacing parts CRANEX Novus e 7 Replacing parts 7 1 Removing covers Instruction on how to remove the ss cover are in section 7 6 Replacing the z carriage motor...

Page 102: ...ed The normal installation and alignment tools Replacement parts New tubehead Tubehead label Replacing the tubehead 1 Switch the unit off and disconnect it from the main power supply 2 Remove the tube...

Page 103: ...manual 7 Replacing parts CRANEX Novus e 3 Remove the EMC cover 4 screws and then the clear plastic PFC and generator protec tion insulator 3 screws 4 Disconnect all cables and the ground cable from th...

Page 104: ...the tube head and checking the alignment 1 Reconnect the unit to the power supply and then switch the unit on 2 Open the service assistant Carry out the calib procedure Also set the exposure counter t...

Page 105: ...ess the circuit board you wish to re place 3 Disconnect all the cables from the circuit board remove the board and install the new one L900 Display adaptor additional instructions After replacing L900...

Page 106: ...ructions After replacing the board use the Service Assistant to recalibrate the unit and the power supply limits and reset the serial number calib mainscalib change the IP address if required update t...

Page 107: ...nd then the unit removed from the wall and placed on the floor before the z motor is replaced 1 Switch the unit off and disconnect it from the power supply 2 Remove the covers from the bottom of the c...

Page 108: ...the cables that connect the rotating unit to the L1600 Z motor board Also disconnect the Ethernet cable and the ground leads 4 CAUTION HEAVY OBJECT THE FOLLOW ING TASK REQUIRES TWO PEOPLE Place some s...

Page 109: ...E FOLLOW ING TASK REQUIRES TWO PEOPLE Remove the unit from the wall or exhibition stand and lay it on the floor For information on how to do this refer to the installation instructions and follow in r...

Page 110: ...CRANEX Novus e 7 Replacing parts Service manual 101 7 Carefully slide the column upper front plate off of the column Be careful not to damage the surface finish...

Page 111: ...safety nut to the bottom of the z carriage assembly and then slide the z carriage upwards away from the safety nut 9 Remove the terminal plate from the column assemble 2 screws and then disconnect th...

Page 112: ...ottom of the column assembly and remove the motor 11 Install a new z motor connect all the cables and then replace all part and covers 12 Reattach the unit to the wall or exhibition stand and then rei...

Page 113: ...ital imaging software you are using and open a patient card where the align ment images can be stored 3 PC Enable image capture 4 PC Make sure that the stillmode in the serv ice assistant is still sel...

Page 114: ...the right or left If the CCD aperture gray area is not vertical the CCD sensor must be rotated slightly until it is vertical 7 Loosen the nuts 4 that hold the CCD sensor in place and then adjust its p...

Page 115: ...Panel from the Upper Shelf and then remove the screws 2 that hold the Top Cover Plate in position and slide it off 2 Drive the unit up until you are able to see the beam alignment tool from beneath th...

Page 116: ...e 7 Remove the hexagon socket wrench from the locking hole and then manually rotate the Rotating Unit 180 so that it is parallel to the front of the upper shelf and the tubehead is on the right Reinse...

Page 117: ...Collimator 2 Loosen the nuts 2 that hold the Collimator Assembly in position and the adjust the left right position of the collimator with the screw 1 on the right hand side 3 Recheck the position of...

Page 118: ...to see the beam alignment tool from beneath the tubehead 2 Make sure that exp exposure no rotation CCD sensor not active function has been se lected CRANEX Novus e service terminal 3 Place the alignm...

Page 119: ...osure switch Check how far the radiation beam is away from middle line of the alignment plate If the beam does not strikes the middle line of the alignment plate the position of the Chin Support must...

Page 120: ...Support again Remove the parts and readjust if necessary Replace all the parts and tighen them when the adjustment is complete 8 5 Checking and adjusting the focal trough 1 Press the RETURN button to...

Page 121: ...the the Rotating Unit Counter clockwise will move the Rotating Unit towards the column and clockwise away from it If the middle ball in the image is too wide turn the adjusting screw clockwise If the...

Page 122: ...f the unit needs realigning adjust accordingly 8 7 Calibrating the CCD sensor 1 PC Enable image capture 2 PC Select the imagecalib refer to the instal lation manual for information on how to do this 3...

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