Transcription
Service Manualfor theCranex NovusDental X-ray Unit200569 rev. 4 (2011-09)
Cranex NovusContentsService Manual for theCranex NovusDental X-ray UnitMedical Device Directive93/42/EECNumber 200569 rev. 4 (201109)Manufactured by SOREDEXNahkelantie 160,TuusulaP.O. BOX 148FI-04301 TuusulaFinlandTel. 358 45 7582 2000Fax. 358 9 701 5261Service manual 200569III
ContentsCranex NovusSoredex endeavours to produce product documentation that is accurateand up to date. However, our policy of continual product developmentmay result in changes to products that are not reflected in the productdocumentation. Therefore, this document should not be regarded as aninfallible guide to current product specifications.Soredex maintains the right to make changes and alterations withoutprior notice.IVService manual 200569
Cranex NovusContentsContents1. General Information . 11.1 Introduction . 11.1 Associated documentation . 11.2 Service precautions and warnings . 1Servicing precautions . 1Warning - Radiation Safety . 1Warning - Mechanical safety . 2Warning - Electrical Safety . 2Caution - electrostatic discharge . 3Warning - Explosion hazard . 4Warning - Cleaning the unit . 41.3 Unauthorized Modifications . 41.4 Disclaimer . 41.5 Yearly maintenance . 51.6 Disposal . 92. Unit description . 102.1 The Cranex Novus . 102.2 The main parts and assemblies .112.3 Unit dimensions . 132.4 Mechanical description . 142.5 Electrical description . 16Circuit boards . 16Power supply. 16Main fuses . 16Unit control . 17Motors and motor control . 17Exposure logic. 18Position control. 19A overview of the Imaging Chain. 192.6 Wiring diagram - overview . 212.7 Block diagram . 222.8 Fuse diagram . 23Service manual 200569V
ContentsCranex Novus3. Circuit Boards . 253.1 L100, Z-Motor Driver (Pt. no. 200395) . 253.2 L200, CCD Power Supply (Pt. no. 200396) . 353.3 L300, 3-Phase Microstepper Driver (Pt. no. 200397) . 443.4 L400 CPU Board (Pt. no. 200398) . 483.5 L500 Connector Board (Pt. no. 200399) . 633.6 L600 Control Panel (Pt. no. 200400) . 733.7 L700 Interface Board (Pt. no. 200401) . 793.8 N2500 Rotation Position Sensor Board (Pt. no. 4801143) . 843.9 Generator Board (Pt. no. 200404) . 883.10 CCD Sensor (Pt. no. 200412) . 964. Troubleshooting . 994.1 Initial checks . 99Restarting the unit . 99Error Codes . 99Checking circuit boards . 99Checking cables and connectors . 100Power supply problems . 1004.2 Problems during start up . 101Nothing happens when the unit is switched on . 101The on/off switch light does not come on. . 101The on/off switch light comes on but the control panel does not light up. . 101Error E 5 (Line voltage tolerance) . 103Error E 16 (Exposure switch or control panel) . 103Error E 20 (Flash check error). 1034.3 Problems while preparing the unit for an exposure . 104None of the control panel indicator nor alphanumericLEDs come on (Error E 18 on service assistant) . 104The control panel indicator and alphanumericLEDs do not come on when they should . 104The control panel Return key does not work. 104Error E 7 (Positioning error) . 105Error E 9 (Rotating motor timeout) . 105Rotating unit stop rotating, no error code . 105Patient positioning light(s) do not come on . 106One of lights does not come on. . 106None of the lights come on. . 106Up/down (Z-motor) keys do not work . 107Error E 8 (Z-motor timeout) . 108VIService manual 200569
Cranex NovusContents4.4 Problems during exposure . 109Nothing happens when the exposure button is pressed . 109Error code H1 (Exposure interupted) . 109Error codes E0, E1 and E2 .110Error E 6 (Exposure timeout) .112Error E 10 (CCD initialization/configuration failure).112Error E 11 (CCD error) .112Error E 12 (CCD error) .113Error E 13 (CCD error) .1134.5 Problems after exposure .113Error E 4 (Tubehead temperature) .113Vertical white stripes on the image.114Horizontal white stripes on the image .1144.6 Bad quality images .115Incorrect patient positioning .115A badly aligned unit .115The CCD sensor .1155. Service Assistant and service functions .1165.1 Using the Service assistant .1165.2 The Service comands.1186. Updating the unit firmware and the core. 1276.1 The unit firmware. 1276.2 Updating the core . 1307. Replacing parts. 1317.1 Removing covers . 1317.2 Replacing the tubehead . 132Appendix A. Technical Information.A-1Service manual 200569VII
ContentsVIIICranex NovusService manual 200569
Cranex Novus1. General information1. General Information1.1 IntroductionThis manual describes how to service all versions of theCranex Novus and OEM versions of the Cranex Novus.1.1 Associated documentationThe Cranex Novus User's manual.The Cranex Novus Installation manual.The Cranex Novus Spare-parts manual.1.2 Service precautions and warningsServicing precautionsOnly service personnel trained and approved bySoredex are allowed to service the Cranex Novus.Before attempting to service the device make sure thatyou know how to operate it. Read the Cranex NovusUser's Manual.Read and familiarize yourself with the warnings andprecautions listed in the Cranex Novus User'sManual.Only use original Soredex spare parts when repairingthe device or replacing parts.The device is factory set to operate using either a230VAC power supply or a 115VAC power supply.Never connect the device to a power supply different tothe voltage marked on the device.Warning - Radiation SafetyBefore servicing the device familiarize yourself withlocal and national radiation safety standards andrequirements relating to dental x-ray equipment.When taking test exposures take adequate precautionsto protect yourself from radiation. Stand behind asuitable radiation shield positioned at least two metres(six feet) from the unit.Service manual 2005691
1. General InformationCranex NovusWarning - Mechanical safetyDisconnect the device from the main power supply before removing any covers.Disconnect the device from the main power supply before repairing or replacing mechanical parts or installingaccessories.Be careful when operating the device not to get bodyparts or clothing trapped between moving parts.During operation some surfaces and components maybecome hot. Take precautions to avoid burning yourself.The aperture plate in the collimator is made of lead (Pb)which is toxic. Do not touch it with your bare hands.Do not open the tubehead. There are no serviceableparts, mechanical or electrical, inside the tubehead.Warning - Electrical SafetyDisconnect the device from the main power supplybefore replacing circuit boards or other electrical components.If there are capacitors on a circuit board or electricalcomponent wait ten (10) minutes, after disconnectingthe device from the power supply, before handling theboard or component.If you have to leave the device unattended during servicing or maintenance, disconnect the unit from mainpower supply to protect people, who may touch the unit,from electric shock.This device should be used only in areas that are provided with a protective earth connection to ensure anequipotential ground connection.2Service manual 200569
Cranex Novus1. General informationCaution - electrostatic dischargeElectrostatic Discharge (ESD) can damage or destroyelectronic components.When servicing the
Contents Cranex Novus Soredex endeavours to produce product documentation that is accurate and up to date. However, our policy of continual product development may result in changes to products that are not refl ected in the product documentation. Therefore, this document should not be regarded as an infallible guide to current product specifi cations. Soredex maintains the right to make .
