Orthopantomograph OP100 Orthoceph OC100
Contents
1. Orthopantomograph OP100 Orthoceph OC100 Electrical Operation amp Wiring INSTRUMENTARIUM 11 2002 63467 4AB Imaging Copyright Manufactured by 2002 by Instrumentarium Imaging Documentation trademark and the software are copyrighted with all rights reserved Under the copyright laws the documentation may not be copied photocopied reproduced translated or reduced to any electronic medium or machine readable form in whole or part without the prior written permission of Instrumentarium Imaging Orthopantomograph and Orthoceph are registered trademarks of Instrumentarium Corporation U S patents 4 641 336 5 016 264 5 425 065 and 5 444 754 German patent 4 344 745 Orthopantomograph OP100 and Orthoceph OC100 comply with UL and C UL File E157261 The original language of this manual is English Instrumentarium Imaging reserves the right to revise this publication from time to time and to make changes in the content of it without obligation to notify any person of such revision or changes Instrumentarium Imaging P O Box 20 FIN 04301 Tuusula FINLAND Tel 358 10 394 6500 Fax 358 10 394 6501 E mail dental fi instrumentarium com Internet http www InstrumentariumImaging com Table of Contents 1 Electrical operation schematics and layouts 1 LL Eleetricaliblock Ga Srainis svi una 1 125 WIEN Qatar Lebe 2 ko Pramarve2. TP4 SOURCE preheat sequence active 0 active 0 MAFB 5V normal exposure active 0 passive 15V MAREF mA reference passive 15V active 0 LINEFB check passive 15V passive 15V stand by mA References and Feedbacks mA Nominal refer Reference tol Feedback tol ence V erances V erances V so TT TT tse fran EEE 10 Instrumentarium Imaging 63467 4AB 63467 4AB 1 Electrical operation schematics and layouts mA References and Feedbacks mA Nominal refer Reference tol Feedback tol ence V erances V erances V The frequency MAFRQ is monitored by the CPU Board During preheat sequence CPU is able to measure the mA value tube current which enables the automatic preheat adjustment During normal exposure the CPU 1s able to calibrate reading of the U F converter ICA4 AD654 since the U F converter converts 5V reference into frequency During mA reference check sequence CPU is able to check the reference that has been written to the D A converter ICA2 7524 During stand by the CPU monitors the LINEFB which indicates the line voltage level If MAFB does not rise signal MAOK does not go active during the exposure Measure test points on the board TP1 GND TP2 mAFB TP4 mAREF 15V VOLTAGE REGULATOR Supply voltages are regulated from unregulated 25V by switching regulator ICA6 L4962 for 15V and linear regulator ICA7 LM337 for 15V Li
3. FUSE RATING FUNCTION SZE O n Si or 16 INCOMING CE 3 x 32 mm 310 VDC List of indicators and test points see Troubleshooting Manual 1 8 3 Tube head assembly CODE 66360 WARNING Voltages inside the tube head assembly are deadly Maintenance of the tube head assembly can only be accomplished at the factory There are no field serviceable parts inside the tube head assembly and opening of the tube head assembly causes non repairable damage and oil leakage Tube head assembly consists of high voltage transformer TF1 voltage multiplier circuit D1 16 and C1 8 feedback resistors and the tube insert TUBE HEAD ASSEMBLY BOARD CODE 66370 Instrumentarium Imaging 13 1 Electrical operation schematics and layouts 1 9 Automatic Exposure Timer AEC Board CODE 60122 AEC Board detects the radiation intensity through the x40 cassette converts the current mode signal from the detectors to voltage mode s gnal and converts the voltage to frequency The frequency AECFRQ is monitored by oo CPU Board AEC board has e oo three adjustment points and all 2 BASE y adjustments must be done after o O OP100 electronics have reached their operational temperatures AMPLIFIERS Incoming current mode signal from the X ray detectors D50 D51 is converted to voltage mode signal and amplified by ICA1 AD546 and ICA3 AD706 OFFSET R3 is used to adjust the offset for operational amplifiers It ha
4. Inverter Board from connector X 4 pins 22 23 25 and 26 Connected to several optoisolators 3 AEC ground level GND2 from AEC Board from connector X 8 pin 12 Connected only to ICD 14 pins 9 and 15 GND is isolated from GNDI and GND2 in CPU Board by optoisolators to eliminate noise and RF interference problems but connected inside the Tube Head Assembly and in the Power Supply Board Instrumentarium Imaging 7 1 Electrical operation schematics and layouts LIST OF SWITCHES Swith Jumper Signal S1 CPU Reset X 11 Normal or Option X 13 Don t care X 10 User Service EPROM chip select X 14 Program options List of indicators and test points see Troubleshooting Manual 1 7 Interface Board CODE 60166 Interface Board contains driver circuits for stepper motors and DC motors and drives projector and warning lights under the control of CPU Board STEPPER MOTOR DRIVERS Stepper motor drivers ICA s 2 4 6 and 8 L297 convert incoming frequencies to stepper motor control sequences and the half bridge drivers ICA s 3 5 7 and 9 L298 drive the stepper motor windings It is possible to increase power to the cassette holder down drive This is done by removing X 21 jumper Full power is available for down movement This can be used if the cassette holder movement is jammed 1f 2 E on X21 VERSION 1 3 gt POW X21 DC MOTOR DRIVERS The Vertical carriage motor Z motor and the Cassette lift motor rack
5. are input buffers There are 40 inputs in use of which 4 are optoisolated and there are 8 unused inputs of which 5 are optoisolated ICD s 9 to 13 and 19 74HC273 are output drivers There are 34 outputs in use of which 15 are optoisolated and there are 14 unused outputs of which one output is optoisolated two outputs are not connected I O from I O drivers to connectors is buffered and protected according to use Relay drives are buffered by ICD38 2804 Darlington driver Signals to X ray generator Filament Drive Board Inverter Board and Tube Head Assembly are optoisolated by seven quad optoisolators ICD s 1 to 5 14 and 20 Rest of the I O signals are protected by serial resistors 6 Instrumentarium Imaging 63467 4AB 63467 4AB 1 Electrical operation schematics and layouts SERVICE JUMPER A 3 pin connector X 10 under the Ze memory chips has a jumper normally Bee plugged to the right When the jumper ir ana ow SERVICE OPTION JUMPER Jumper X 11 is an option switch normally in off position When switched on the OP100 can be demonstrated normally but the exposure is prevented This feature can be used eg in exhibitions X RAYS NG X RAYS OFF ON OFF ON GROUNDING There are three separate ground levels in the CPU Board 1 The actual processor ground level GND for 5V 2 The generator ground level GND1 from Filament Control Board and
6. carriage Main fuses are located below the vertical carriage y 4 Both Fl and F2 are slow blow type 7 p gt a ee for incoming main voltage 110 or 1111118 me oe un ih 230 Vac MAIN FUSES Rating 230 VAC Rating 110 VAC Size 10 AT 15 AT Note In USA Canada ISAT fuses are used also with 230VAC rating 1 4 Differences between 230 VAC and 110 VAC use 1 4 1 Software version 1 02 07 or higer Fuses 326 Littelfuse slow blow 10A 230 VAC MDA 15 COOPER BUSSMAN time delay 15A 110 VAC DIFFERENCES BETWEEN 110 VAC AND 230 VACSW 1 02 07 110 VAC 230 VAC 85 125 175 250 15 AT 10 AT 2 Instrumentarium Imaging 63467 4AB 63467 4AB 1 Electrical operation schematics and layouts DIFFERENCES BETWEEN 110 VAC AND 230 VACSW 1 02 07 FEATURE 110 VAC 230 VAC POWER BOARD JUMPER ON RIGHT SIDE ON LEFT SIDE SWITCH 57 77 kV max 16mA MANUAL EXPOSURE 57 63 kV max VALUES 16mA PANORAMIC amp SPECIAL 66 85 kV max MODES 12 mA 81 85 kV max 12 mA MANUAL EXPOSURE 60 85 kV 12 mA VALUES CEPHALOSTAT MODE EXPOSURE VALUES and Pr52 CCo READY FOR DIGIPAN AEC VALUES 57 85 kV 3 2 57 77 kV 3 2 12 mA 16 mA 77 85 kV 3 2 12 mA AEC amp MANUAL OFFSET 1 10 Pr 52 CCO density gt ou en a2 288 258 Q x Cnr T9 r gt EA Ky nf Z gae o USER Io g a ul 1 5 Power supply board CODE 60113 Power Supply Board rectif
7. is on current is drawn through magnet L2 and the head lock is on Circuit 1s opened by pressing one of the switches S2 or S3 located at the sides of the head support assembly J NoTE CPU does not control the head support lock operation 1 13 Halogen positioning lights For panoramic and TMJ positioning there are three halogen lights Lights are controlled through Interface board They do not operate in QA CEPH nor TOMO operating modes 16 Instrumentarium Imaging 63467 4AB 63467 4AB 1 Electrical operation schematics and layouts 1 14 Laser lights Ortho Trans models have two laser lights one above the mirror and the other under the rotating cover Laser lights are controlled by Interface board OT There are not adjustable parts inside the laser light assembly Lasers are lit when Ortho Trans opton is active Sr 89 COP 7 P11 on and the TOMO collimator is selected and lights on or occlusal correction keys are pressed on positioning panel Laser lights 1 15 Remote exposure control A remote control exposure switch with cable code 69961 can be connected to a junction box located at the rear of the column This switch is normally open and it is directly wired to the CPU Board Signals are logical level voltages REMOTE EXPOSURE ONLY With Sr 89 rEo or Sr 89 COP one can configure OP100 so that exposure Automatic and Manual Exposure control can only be initiated from the rem
8. side boxes of the vertical carriage These lines are wired into separate CPU I O ports When no cephalostat is attached the program 5 cannot be selected from the control panel Connecting cephalostat arm cable CC 2 to either X 110 or X 121 gives CPU the information to orient X ray tube correctly 1 20 List of documents The following OP100 documents should be part of this section Code Document 68951 1S Wiring Diagram from s n 72000 60110 3S Ceph Soft Tissue Display Schematics 60112 3S CPU Board V1 5 Schematics 2 pages 60113 3S Power Supply Board Schematics 60114 3S Filament Control Board Schematics 60115 3S Inverter Board Schematics 60122 3S AEC Board Schematics 60166 3S Interface Board V1 3 Schematics 2 pages 60134 4S Head Support Lock Schematics 60143 4S Ceph Up Down Switch Schematics 66370 3S Tube Head Assembly V1 4 Schematics 60147 4S Cassette Opto Sensors Schematics 60107 3S Control Panel and Display Schematics 60108 4S Patient Positioning Panel Schematics In the case of missing or out of date documents please contact your distributor or Instrumentarium Imaging Technical Service 18 Instrumentarium Imaging 63467 4AB Instrumentarium Imaging P O Box 20 FIN 04301 Tuusula Finland Tel 358 10 394 6500 Fax 358 10 394 6501 dental fi instrumentarium com Instrumentarium Imaging Inc 300 West Edgerton Avenue Milwaukee Wisconsin 53207 USA Tel 1 800 558 6120 1 414 747 1030 Fax
9. 0 is fed to the D A converter via a buffer amplifier ICA1 TLO74 The output reference MAREP is also buffered by ICA MA REGULATOR PWM pulse width modulator ICA3 TL494 regulates the filament heating level by adjusting the duty cycle of the driver transistors so that the feedback voltage at pin is the same as the reference voltage at pin 2 PWM FEEDBACK MULTIPLEXER The feedback voltage to the pin 1 of the PWM circuit ICA3 TL494 comes through the multiplexer ICD2 4052 The feedback source from ICD2 depends on the control signals PREH and PREHREL Instrumentarium Imaging 9 1 Electrical operation schematics and layouts STATUS PREH TP3 PREHEL FEEDBACK TP4 SOURCE preheat active 0 active 0 PREHFB sequence active 0 passive 15V MAFB normal passive 15V active 0 MAFB exposure passive 15V passive 15V MAFB mA reference check stand by FILAMENT TRANSFORMER DRIVE Pulse Width Modulator ICA3 TL494 drives the FET switches T1 and T2 which drive the filament transformer primary Filament voltage is rectified and monitored as signal PREHFB MA FEEDBACK MONITORING CPU is able to check some voltage levels in the Filament Control Board by reading the frequency MAFRQ in different situations The voltage to the U F converter ICA4 AD654 comes through the multiplexer ICD2 4052 The voltage source from ICD2 depends on the control signals PREH and PREHREL STATUS PREH TP3 PREHREL VOLTAGE
10. 1 414 481 8665 info usa instrumentarium com Instrumentarium Imaging France S A R L 4 Avenue des Roses 94386 Bonneuil Sur Marne Cedex France Tel 33 1 43 39 51 51 Fax 33 1 43 39 75 75 instrumentarium imaging wanadoo fr Instrumentarium Imaging Italia S R L Via Cassanese 100 20090 Segrate MI Italy Tel 39 02 21 30 28 1 Fax 39 02 21 30 28 60 instrumentarium it instrumentarium com Instrumentarium Imaging is constantly improving its products and reserves the right to change these specifications without notice Pimaging www InstrumentariumImaging com Instrumentarium Imaging Singapore 152 Beach Road 12 03A Gateway East 189721 Singapore Tel 65 6391 8600 Fax 65 6396 3009 singapore sg instrumentarium com Instrumentarium Imaging Dental GmbH P O Box 2044 77680 Kehl am Rhein Germany Tel 49 7851 932 90 Fax 49 7851 932 930 kontakt instrumentarium imaging de Distributor 11 2002 Instrumentarium Imaging 63467 4AB
11. NTS 25VDC 25VDC HEAD SUPPORT LOCK REMOTE EXP SW CPU PANEL EXP SW LOCK SW POS PANEL KEYS CEPH UP DOWN PANEL POS LIGHTS OP COLL SW LASER LIGHT OC COLL SW LASER LIGHT ON Z CARRIAGE SW Z MOTOR LIN MOV SW LIN MOTOR ROT SW INTERFACE ROT LIGHT CEPH SW SCAN MOVEMENT OPL OPR OCL OCR POS PANEL LEDS BEAM ALIGNMENT BOARD OP100D BLOCK DIAGRAM EXPOSURE 110 230VAC POWER SUPPLY INVERTER 12VAC 25VDC 25VDC 34VCC 25VDC 25VDC 34VDC CPU PAN AEC TERMINAL FILAMENT 5V 34VDC 12VAC EXP LIGHTS PANEL EXP SW INTERFACE REMOTE EXP SW CONTROL PANEL CTL PANEL LEDS Instrumentarium Imaging 1 1 Electrical operation schematics and layouts 1 2 Wiring diagram Copies of OP100 Wiring diagrams see section List of Documents 1 3 Primary electronics l phase electric power is fed through a 3 pole cable to the column where the cable goes inside the right side groove to the vertical carriage connectors X 101 and X 122 Line filter is located under the lower shelf Line filter ground is connected to the incoming 3 pole cable ground Flat connectors or fixed screws are used There are two line filter types units without CE marking have type S 093 4 code 21297 Units from s n 72000 with CE marking type S 124 10 or NM 124 10 code 69025 WARNING Main switch with power on Always make sure OP100 has a good protective ground indicator light is located under the vertical
12. aging 5 1 Electrical operation schematics and layouts CPU controls all operations by supplying control signals through it s input output I O and timer circuits CPU The microprocessor and it s memory peripheral circuits are common 8 bit processor design The microprocessor CD31 80C32 has 8 I O lines mainly control signals for control panel by serial link The address decoding is made by PAL circuit CD25 22V 10 OP100 main program is stored in EPROM ICD29 27512 white label and service programs in EPROM ICD 28 yellow label RS 232 RS 232 driver CD37 MAX232 is for two RS 232 serial links one serial link is divided into two links by PAL circuit ICD25 22V 10 RESET CIRCUIT ICA2 TL7705 is a RESET generator In the hardware there is also a watchdog feature If the software does not frequently generate pulses in WDRES signal the voltage at pin 2 of ICA2 falls too low and activates the RESET signal Switch S 1 resets the CPU TIMER CIRCUITS The three timers of ICD27 8254 and timer 2 of ICD25 8254 generate clock frequencies for the stepper motor drivers in Interface Board by dividing the 1 5 MHz clock signal Timers 0 and 1 of ICD25 8254 count the frequencies AECFRQ and MAFRQ from the optoisolators CD36 and ICD34 6N 136 5V VOLTAGE REGULATOR ICA 4962 regulates 5Vdc supply voltage for CPU Board from incoming unregulated 25V PARALLEL INPUTS OUTPUTS ICD s 6 7 15 to 18 4ACT244
13. ies AC voltages and filters the unregulated DC voltages Power Supply Board consists of two main parts low voltage and high voltage parts Instrumentarium Imaging 3 1 Electrical operation schematics and layouts WARNING Voltages in high voltage part of the power supply board can be deadly the peak to peak voltage level normally exceeds 600 V 1 5 1 Line voltage jumper Jumpers S1 or S2 are for setting the unit according to local line voltage Switches the rectifier V4 to the 1500uF capacitors C 1 and C 2 located above the Power Supply Board to be either full wave rectifier 230 Vac or half wave voltage doubler 110 Vac aim Connects the primary of the line E 310 VDC transformer TF2 either parallel 230 Vac or in series 110 Vac Connects the primary of the line transformer TF1 either parallel 230 Vac or in series 110 Vac Connects signal MAINS to GND when X40 VAG 110V line voltage is selected Signal MAINS indicates to the CPU board whether the unit is connected to nominal 110 Vac or 230 Vac line This switch will determine the kV mA table WARNING The line voltage selection jumper must all be at the correct position left for 230 VAC and right for 110 VAC J nore 110 VAC 7 Jumper connectors S1 or S2 from unit s n 71505 4 Instrumentarium Imaging LOW VOLTAGES LOW VOLTAGES 63467 4AB 63467 4AB 1 Electrical operation schematics and la
14. ircuit amp flip flop ICD2 4013 kV regulator regulates kV by adjusting the operating frequency of the high voltage FET bridge PULSE TRANSFORMER DRIVE Drivers ICA4 and ICA5 SG3635 drive the pulse transformers TF3 and TF4 which in turn drive the FET switches of the H bridge KV FEEDBACK MONITORING If kVfb does not rise signal KVOK does not go active during the exposure kV references and feedbacks kV Nominal refer Reference tol Feedbacktoler ence V erances V ances V 290 310 Besas C an TT Tamam TT sana Measure test points on the board TP17 GND TP18 KVFB TP19 KVREF BACK UP TIMER Back up timer ICA2 LM339 disables the pulses if the EXPENA signal is active for too long period approximately 22 s 12 Instrumentarium Imaging 63467 4AB 63467 4AB 1 Electrical operation schematics and layouts TEST SWITCH When testing the unit without x rays or without kV TEST switch S from board version 1 3 jumper X35 allows the activation of the exposure sequence and imaging movements regardless of the KVOK feedback 15V 25V SUPPLY VOLTAGES Supply voltages to Inverter Board are connected via the Filament Control Board 25V is only present during exposure when PREHREL signal is active in Filament Control Board FUSE High voltage fuse in the Inverter Board to protect the printed circuit board in case of short circuits Fuse rating is 16 AFF or 10 AT from August 1994 INVERTER BOARD FUSE
15. is decoded to drive the 7 segment displays through ICD1 and ICD2 MC14489 KEY SWITCH DATA OUT s ond operating instructions ore observed ORTHOPANTOMOGRAPH p OP100 Key switches S1 S2 S3 S4 and S6 up left down right OK are buffered by ICD6 40106 decoded and multiplexed by circuits ICD2 74HC165 and ICD4 74HC138 and driven to the CPU Board through the serial link Exposure switch S5 is wired directly to the CPU Board It is possible to disable S5 function with Automatic and Manual mode operation In this case the exposure with radiation is acticaed via remote control only See Sr 89 rEo or Sr 89 COP options for details VOLTAGE REGULATOR Supply voltage 5V is regulated by ICA5 L4963 1 11 Patient positioning panel CODE 60108 Patient Positioning Panel includes all the key switches lt gt required when positioning the B i a patient in OP100 The occlusal oo corrections according to the EZ ats biting of the patient are Zul Dur indicated by three LED indicators The three LED indicators Hl H3 are driven from the CPU Board and key switches S1 S9 are wired to the CPU Board Pressing any key will ground the CPU input line Pressing any key except OK at power up causes Er 45 InP message The Patient Positioning Panel is usually installed to the left hand o
16. lectronies waere 2 1 4 Differences between 230 VAC and 110 VAC use 20 eee kek n 2 13 Power supply board CODES Dr 3 Los kine VOMA CE JUMPER anne ea ee lei 4 1 32 H sh voltage SECHION susanne 3 L3 SOW voltage section een 3 1 6 CPU Board CODE SIT DB u ee a a drkan n 5 Lr Intertace Board C ODE G0 NOG sen aaa 3 LS A Tay ena NO enna ee DD r A ee ee rene 9 1 8 1 Filament Control Board CODE 60114 cceccceseceeeseeseceenseeeeeeeneees 9 1 82 veter Board CODE GOLLY sn na 11 138 5 Tube head assembly CODE 66360 En oo et eee an ka E ees 13 1 9 Automatic Exposure Timer AEC Board CODE 60122 14 LAO Control panel COBERL ID a as kaka W xal e S en lek a ek R AN 15 1 11 Patient positioning panel CODE 6010 kek kek 15 1 41 2 Head SUDO ORE NOC nee I S A De Ke n eaten 16 1 158 Halogen Positt ones en 16 EW E Hechter te een ee Nie ae 17 1 19 Remote posure Contour 17 1 16 C eph Solt tissue Aspl yasni 17 DIFC PRNO STU DDOL sa aa ae ee 18 1 18 Cephup down SWIICH sense ua kai ebd k na k 18 Le 92 Cephalostat ER COUO xy y r a T 18 1 20 AIST OT Io IES N De e rererrrrrrrrrerrd r 18 63467 4AB Instrumentarium Imaging i il Instrumentarium Imaging 63467 4AB 1 Electrical operation schematics and layouts Electrical operation schematics and layouts 63467 4AB 1 1 Electrical block diagrams OP100D BLOCK DIAGRAM POSITIONINGS amp MOVEME
17. motor are driven accordingly by circuits around pulse width modulators ICA10 and ICA11 TL494 PROJECTORS WARNING LIGHTS Positioning projectors are controlled by relay K1 The X ray warning lights L1 and L2 are controlled by relay K2 Interface board OT Laser lights are used in Ortho Trans units Lasers are controlled by transistor T7 15V VOLTAGE REGULATOR 15V operating voltages for PWM circuits ICA10 and ICA11 are regulated from unregulated 25V by ICAI LM317 8 Instrumentarium Imaging 63467 4AB 63467 4AB 1 Electrical operation schematics and layouts List of indicators and test points see Troubleshooting Manual 18 X ray generator mAOK Freh Filament control Frehr e Digital EYZ reference 2 OYREL Expena Yaltage maltiplier Power Inverter 9 Hj transformer RG oe r aS 238VAC e Power supply I rE nn ae a gn pag a DD oe U u J Rect f ter and Filer 1 8 1 Filament Control Board CODE 60114 Filament Control Board regulates filament heating level prior to the exposure preheat control and during the exposure mA control according to the digital references controlled by CPU Board MA REFERENCE Digital mA preheat reference signals KVMAO KVMA7 is latched to D A converter ICA2 7524 at 20 ms intervals by the negative edge of signal KVMACLK while signal KVMASEL is being low at the same time The 5V input reference from D 17 LM336 5
18. ote exposure button However Test mode can always be demonstrated from Control Panel while Sr 89 rEo or Sr 89 COP 1 rE is set on This option is not available with some of the early CPU board versions 1 16 Ceph soft tissue display The movement of the nose support changes the trimmer R 30 resistance This board will show the nose support travel on two 7 segment displays with values 0 60 where value represents the distance from the center of the ear holders to nose support The actual distance is value 60 mm 25 VDC Power is received from Power Supply board ADJUSTMENTS There are trimmers R6 and R7 to adjust offset for 0 and gain for 60 1 Nore This board has no feedback to CPU board Instrumentarium Imaging 17 1 Electrical operation schematics and layouts 1 17 Ceph nose support Part of the nose support assembly is a trimmer R30 whose resistance value changes when the nose support is moved This value is used as an input to Ceph Soft Tissue Display Board 1 18 Ceph up down switch Behind the ceph cassette holder there is a up down switch for the vertical carriage This key is wired to CPU board These keys together with Patient positioning panel keys have the same function but they are wired to different I O ports 1 19 Cephalostat L R coding The coding for the cephalostat and x ray tube orientation is controlled with X 110 pin 4 and X 121 pin4 located in the
19. peration For the right hand operation connect the panel to the right side of the lower shelf and use the connectors on the right side Cable C 10 has double connectors X 47 L X 47 R and X 48 L X 48 R specially coded to inform CPU about the panel location Ortho Trans models have two panels 63467 4AB Instrumentarium Imaging 15 1 Electrical operation schematics and layouts CPU Board detects whether the panel is installed to the right side by monitoring signal HOMESIDE in the CPU board The operation is automatically switched to right handed configuration right handed unit lifts the cassette rack from right and makes the exposure during counterclockwise rotation 1 NOTE Technically it is possible to have two Patient positioning panels option code 61248 installed on both sides at the same time In this case the operation is left handed unless User Program Pr 57 Hon for bi directional operation is selected 1 12 Head support lock Head Support Lock consists of the magnet lock and the lock switches There are three models for head support vertical movement manual fixed and fixed with Ortho Trans e Manual movement is with friction It is used in OP OC100 models outside USA Canada e Fixed model is used in OP OC100 models in USA Canada e All Ortho Trans models including upgrades use a fixed model where the head support 1s removable 25 VDC Power is received from Power Supply board When the OP100 power
20. s been adjusted at the factory for 0 VDC measured from TP1 U F CONVERTER The amplified voltage is converted to frequency signal by the voltage to frequency converter ICA4 AD654 and the frequency AECFRQ is wired to the CPU Board BASE FREQUENCY R27 is used for base frequency adjustment of 5 kHz 0 25 kHz at 0 kV 0 mA The value is measured from TP2 or by using the Sr 78 Fre service program and reading the frequency from the display GAIN R6 1s the gain adjustment It 1s adjusted by exposing through a special service tool code 60441 Gain will be adjusted for as follows 230 VAC 73 kV 12 mA 144 kHz 3 kHz 110 VAC 73 kV 10 mA 122 kHz 3 kHz List of indicators and test points see Troubleshooting Manual 14 Instrumentarium Imaging 63467 4AB 1 Electrical operation schematics and layouts 1 10 Control panel CODE 61160 Control Panel operates as a link between the operator and the CPU Board It allows the operator to control OP100 and displays the status of the equipment to the operator Control panel is monitored and controlled from CPU Board by a serial link DISPLAY DATA IN Serial mode input signals from the CPU Board are buffered by ICD7 40106 and wired to decoder circuit ICD4 74HC138 Incoming data is decoded to drive the LED indicators L1 L25 through ICD3 M5450V The 7 segment display drive is in a separate piggy back pcb The incoming data
21. st of indicators and test points see Troubleshooting Manual 1 8 2 Inverter board CODE 60115 Inverter Board regulates kV during the exposure according to the digital reference controlled by CPU Board Inverter Board consists of two main parts High voltage section containing the FET bridge and low voltage section containing the regulating reference and pulsing circuits WARNING Voltages in high voltage part of the inverter board can be deadly The peak to peak voltage level normally exceeds 600 V FET BRIDGE HIGH VOLTAGE The FET transistors in the H bridge switch power to the high voltage transformer in the tubehead assembly The higher the frequency in the FET bridge is the lower the power level kV mA in the tubehead assembly In general FET s T1 2 7 and 8 conduct at the same time and FET s 3 4 5 and 6 accordingly at the opposite phase Instrumentarium Imaging 11 1 Electrical operation schematics and layouts KV REFERENCE Digital kV reference signals KVMAO KVMA7 is latched to D A converter ICA3 7524 at 20 ms intervals by the negative edge of signal KVMACLK when signal KVMASEL is high at the same time The 5V input reference D21 LM336 5 0 of the D A converter is buffered by ICA1 LM324 The output reference K VREF is also buffered by ICA KV REGULATOR kV regulator consists of KVFB buffer amp error amplifier ICAI LM324 frequency modulator amp comparator ICA2 LM339 and pulse shaping c
22. youts 110V 230V Plug in 51 right Plug in S2 left Adaptateur S1 a droite Adaptateur S2 gauche 1 5 2 High voltage section In high voltage section upper half of the PC board there is a rectifier D 4 for line voltage and loading circuitry K1 K2 R6 for two capacitors C1 and C2 which are connected to the PC board through connector X 22 1 5 3 Low voltage section In low voltage section lower half of the PC board there are fuses rectifiers and filter capacitors for low operating voltages e 24 Vac from transformer TF1 is fused by F2 rectified by D5 to 34 V and filtered by C3 C4 C5 18 Vac from transformer TF2 is fused by F3 rectified by D6 to 25 V and by D7 to 25 V and filtered by C7 C8 12 Vac from transformer TF2 is fused by F1 POWER SUPPLY BOARD FUSES FUSE RATING FUNCTION SIZE 6 3 AT or 10 12 VAC 63x32 mm AT 6 3 AT 34 VAC TPE 1 NOTE F1 with 10 AT rating is needed if the OP100 has with 5 projectors for double side patient positioning List of indicators and test points see Service Manual Vol V Trouble Shooting 1 6 CPU Board CODE 60112 OP100 is a microprocessor controlled equipment CPU Board monitors and controls all movements and other operations in OP100 except the Head support lock operation and Ceph soft tissue display All key inputs microswitches and optocouplers are read by the CPU Board Accordingly the Instrumentarium Im
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