SERVICE MANUAL - Takara Belmont
Contents
1. 1 I Cabinet Frame amp N A Al a X ib 2 7 gt 8 855 5 2 3 2 5 9 D SK TE Y NE amp Y 6 3 16 157 7 15 16 38 5 16 973 226 L 39 3 16 995 2 40 1 4 48 5 16 1243 260 SSD Source to Skin Distance a Regular cone 8 inches 203 mm b Long 12 inches 305mm SSD 195 mm Fig 1 Dimensions 3 TUBE HEAD THERMAL CHARACTERISTICS A Interval between each exposure The temperature inside of the tube head rises when an exposure is made The value of the heat generated is measured in Heat Units HU which is the product of tube potential tube current and exposure time Excessive heat will accumulate inside of the tube head if the x ray is used without a proper cool down interval between each exposure The excessive heat may damage the x ray tube high voltage generator or both B Duty cycle A cool down interval of 50 seconds or more must be allowed between each 1 second exposure a 25 second cool down must be allowed between each 0 5 second exposure This will avoid the accumulation of excess heat and prolong the tube head life C Tube head cooling curve 1 Tube hosung cooling curve 250 200 150 100 Heat Storage kH U 502. eq esau j 0 3 pue zo a 10 2 esneo ajqissod suonnjos y sBumes XH st XX JI siu 10 YAMS Jewod pue 61 1 11 9 4 Dunes senje pue Y92949 JO Jeu amp iu au uey SI JO JO Bunes Howa OJOILU Jo ureBe uonounj eu pue peeu eqn eq Aew peeu eqn usu ejqeo pue HAV H uous euJeju peeu eqni eBeyo 10 YAY yosyo pue ay eq Jemod 82 youued eBeyo pue JO 9eAG p6 pejsnfpe eq YAY pue MO SI 72 e qeo y 108 110 BULIM SIN pue Ajynuguoo 10 uoee yooyo JO pue eu Selge 60 3 JO 105 9 1994 NOILNTOS 903 JO LNIOd O3HO LNIOd 23H92 uBiu YAY asnvo ITAISSOd Bumes
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4. Table 6 Film number and exposure time in film mode at 4mA with long cone Unit Sec e m in the table denotes that a tube current setting is automatically switched and set at the most appropriate time 11 Table 7 Sensor sensitivity number and exposure time in digital mode at 7mA with regular cone ci Le EEE in the table denotes that a tube current setting is automatically switched and set at the most appropriate time Table 8 Sensor sensitivity number and exposure time in digital mode at 4mA with regular cone Unit Sec 12 Table 9 Sensor sensitivity number and exposure time in digital mode at 7mA with long cone Child teeth T1 T2 T3 T4 T5 T1 T2 T3 T4 T5 T1 T2 T3 T4 T5 Unit Sec Table 10 Sensor sensitivity number and exposure time in digital mode at 4mA with long cone Child teeth T1 T2 T3 T4 T5 T1 T2 T3 T4 T5 T1 T2 T3 T4 T5 in the table denotes that a tube current setting is automatically s
5. essen 4 mA 7 mA selectable 5 Maximum rated peak tube potential 70 kVp 6 Rated line voltage 120 V AC 60Hz Single Phase 12 VA Long term rating 0 8 Momentary rating 7 Line Voltage range ee tette nte 108 V 132 V AC 8 Range of line voltage regulation 0 3 9 Rated line 6 5 Aat 70 kVp 7 mA 10 Maximum line current eese 7 2 A at 70 kVp 7 mA 11 Exposure time irte rere si 0 02 3 2 sec ON and OFF zero crossed 12 Inherent filtration tet tete 1 7 mm AI Equivalent 13 Added filtration eerte derent 0 5 mm AI 14 Minimum filtration permanently in useful beam 2 2 mm Al Equivalent at 70 15 Nominal roentgen output 4mA 7 Distal end of regular cone 42 7 1 mGy sec 40 b Distal end of long 1 9 3 3 mGy sec 40 Data obtained by direct measurement in the useful beam 16 Nominal electrical output of V Generator 0 36kW at 70kVp 7mA 17 Cone Source to skin distance Field size Regul r ere ge eer rete 8 inches 204 mm 58 mm dia circular b Long cone 12 inches 305 mm 58 mm dia circular 18 Maximum symmetrical radiation field 60 mm dia at distal end o
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7. 20 40 60 80 100 120 140 Time in Minutes 3 Maximum rating chart 20 18 16 14 12 Tube Current mA 10 0 1 02 03 0507 1 2 3 5 7 Exposure Time S E Heat Storage J 2 Anode thermal characteristics 4500 4000 3500 3000 2500 2000 1500 1000 500 Time S SECTION 2 OPERATION INSTRUCTIONS 1 LAYOUT OF CONTROLLERS Fig 2 Major Components and Control Identification 1 Main Power Switch 2 Ready Light 3 Exposure Time Adjusting Switch Down 4 Exposure Time Adjusting Switch Up 5 Tooth Selection Switch T1 6 Tooth Selection Switch T2 7 Tooth Selection Switch T3 8 Tooth Selection Switch T4 9 Tooth Selection Switch T5 10 Cone Type Selection Switch 11 Film Speed Selection Switch 12 Digital Imaging Switch 13 Selection Switch 14 7mA Selection Switch 15 Patient Size Selection Switch 16 Exposure Time Display Window 17 Exposure Warning Light 18 Exposure Switch 2 FUNCTION OF CONTROLS 1 Main Power Switch Pushing the upper side of this switch to the ON position energizes the x ray unit Ready light and pre select light for cone type film or digital mA
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9. 13 4mA Selection Switch By momentarily depressing this switch the tube current is set at 4mA When Film switch is depressed the tube current setting will be automatically changed to 7mA 14 7mA Selection Switch By momentarily depressing this switch the tube current is set at 7mA When Digital switch is depressed the tube current setting will be automatically changed to 4mA 15 Patient Size Selection Switch This switch alters the selection of patient type size to be radiographed child gt adult Obese child and sets the exposure time automatically NOTE Setting or adjusting the exposure time manually with or Q switch supersedes 5 15 functions 16 Exposure Time Display Window This window displays the selected exposure time If an abnormal condition exists or a malfunction occurs an Error Code is displayed See Section 6 ERROR CODE 17 Exposure Warning Light Illumination of this light indicates the unit is producing x radiation 18 Exposure Switch This switch initiates radiographic exposure When making an exposure depress and hold this switch unit the Exposure Warning Light 17 and the audible warning shut off Failure to keep this switch depressed will result in the premature termination of the exposure and error code E 00 will be displayed in Exposure Time Display Window 16 3 OPERATING PROCEDURES 1 Turn ON the Main Power Switch 1 2 Confirm that Ready Light 2 is illuminated NOT
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11. Power on the control box 2 Set the exposure time at 0 5 seconds by the manual adjusting switch next to the exposure time display window 3 Make an exposure and keep the exposure switch depressed even after the exposure is over Press the mA selection switch either 4 mA or 7 mA 4 T1 tooth light comes on and tube current of the first pulse of the exposure is displayed at the exposure time display window while the exposure switch is depressed 5 Keep depressing the exposure switch press the mA selection switch again Then 5 tooth light comes on and tube current of the last pulse of the exposure is displayed at the exposure time display window This value is tube current at the stabilized portion of the exposure 6 If tube current of the first pulse is out of 2 mA from the rated current perform the h XX adjustment If tube current of the last pulse is out of 1 mA from the rated current perform the e XX adjustment 19 c Direct measurement 3 1 Prepare a multimeter capable to measure 5 Vde with 1 accuracy within I second 2 Turn off the main switch 3 Open the front panel of main controller 4 Set to the suitable range of multimeter to measure 5Vdc 5 Connect the positive lead of multimeter to test point TP1 at lower left corner on the power PCB and negative lead to the test point TP6 at upper left corner on the power PCB 6 Turn on the main switch 7 Set the exposure time to 2 seconds 8 Make exposure and r
12. Retaining Bolt M6 35 2 39 IPOICLAO Sub Controller Assembly 1 19 506 0 Brake Plug I 40 IA04JGAO Hook for Side Cover 1 20 Brake Screw M6 X 6 l 41 ee Screw for Hook M4 X 6 1 21 ECLS11B0 Brake Spring 1 231 Not available USA BELMONT EQUIPMENT Division of Takara Belmont USA Inc 101 Belmont Drive Somerset New Jersey 08873 U S A TEL 732 469 5000 800 223 1192 Fax 732 356 1035 800 280 7504 www belmontequip com TAKARA CO CANADA LTD 2076 S Sheridan Way Mississauga Ont L5J2M4 TEL 905 822 2755 905 822 6203 www takarabelmont ca Book 1 06 6 0 Printed in Japan 2011 03
13. XX value displayed to the memory If value 15 stored electronic chime will should twice Turn off the main switch and check the tube current at stabilized portion of exposure again tube current is within 0 5 mA from the selected tube current e XX adjustment is finished If tube current is still out of the range repeat step 2 7 above ADJUSTMENT OF LINE VOLTAGE MEASUREMENT ERROR Line voltage is monitored by micro computer and if it is out of the operable range 90 100 of the rated voltage the ready lamp on front panel becomes off and exposure is inhibited form of line voltage is a sine wave Since the peak voltage of this sine wave is converted to measurable voltage and apply to micro computer there exists a measurement error if the wave form is not perfect sine wave If measured RMS Root Mean Square voltage of power line by a precise multimeter is within the range of 90 10096 of the rated line voltage but the ready lamp on front panel doesn t come up measured voltage by micro computer can be shifted 3 as follows l 2 3 gt x Turn on the main switch Keep depressing T2 T3 and T4 switches until Pc X is displayed on the exposure time window Meaning of Pc value is as follows 0 No compensation is applied initial setting from factory Pc 1 Measured voltage by micro computer is decreased by 3 96 2 Measured voltage by micro computer is increased by 3 9
14. a darker image increase the speed setting and to get a lighter image decrease the speed setting If the speed setting is increased by 1 exposure time becomes 12 longer 1 Keep 4mA selection switch and 7mA selection switch depressed simultaneously for more than 3 seconds Release the switches if the ready light starts to flash 2 Push D switch momentarily until the light above the D switch illuminates and the exposure time display window shows the present speed setting The factory default setting d 06 should be displayed 3 By depressing 3 or switch increase or decrease speed until the desired number is displayed 4 Press T1 switch to store these settings then turn the main power switch off Unit Sec Table 3 Film number and exposure time in film mode at 7mA with regular cone Table 4 Film number and exposure time in film mode at 4mA with regular cone Unit Sec Chil SG in the table denotes that a tube current setting is automatically switched and set at the most appropriate time 10 Table 5 Film number and exposure time in film mode at 7mA with long cone Unit Sec chi pen Tats ae tbe pr pe
15. and patient size illuminate It is recommended to keep this switch OFF when the unit is not in use in order to prevent an accidental exposure 2 Ready Light This light illuminates when the line voltage is within operable range 108 132Vac When this light is not on exposure can not be made 3 4 Exposure Time Adjusting Switches By momentarily pushing the amp 2 switch the exposure time displayed increases or decreases by one increment By keeping the switch depressed more 2 sec the exposure time displayed increases or decreases continuously until the switch is released Model 097 has the following 23 exposure time settings 0 00 0 02 0 03 0 04 0 05 0 06 0 08 0 10 0 13 0 16 0 20 0 25 0 32 0 40 0 50 0 63 0 80 1 00 1 25 1 60 2 00 2 50 3 20 sec 5 9 Tooth Selection Switches T1 T5 Pushing one of these switches sets the exposure time automatically for the following 10 15 5 Incisor of Mandible 6 T2 Incisor of Maxilla Cuspid amp Premolar of Mandible 7 T3 Cuspid amp Premolar of Maxilla Molars of Mandible Bite Wing 8 T4 Molar of Maxilla Bite Wing Molars 9 T5 Occlusal If the TI switch 5 is depressed more than 3 sec unit goes into Lock Mode In lock mode the only functional switch is the power switch To exit from the lock mode depress the switch more than 3 sec again 10 Cone Type Selection Switch Depressing this switch for more than 2 s
16. voltage by resistor R37 and R38 totally 5000 on power generating PCB The voltage across these resistor becomes 3 5 when tube current is 7 mAdc this method the tube current only at stabilized period of exposure can be measured Auto mode is recommended for post installation confirmation and periodic maintenance a Auto mode Turn on the main power switch 2 Depress the tooth selection switches T1 T4 and TS together until 4mA light blinks 3 Exposure time 0 50 15 displayed and ready light is If not turn off main power switch and repeat step 2 Then release T4 and T5 switches 4 Make an exposure by depressing the exposure switch N WARNING X RADIATION IS GENERATED FOR 0 5 SECONDS 5 If h XX and e XX are displayed alternately after the exposure leave the unit for about 30 seconds until the display returns to 0 50 Then make another exposure again 6 If Fin is displayed at the exposure time display window tube current at the beginning of exposure and tube current at the stabilized period of exposure are within the specifications for both 4mA and 7mA 7 Repeat step 5 until Fin is displayed b Manual mode Model 097 x ray has the function displaying the tube current of the first pulse and the last pulse of the exposure at the exposure time display window By this function the tube current at the beginning and at the stabilized portion of the exposure can be measured
17. yeyo Surjous o qnon S posn oq 9 OG Fesn ur 1501 e dsrp au dunsodxa ur poKv dsip pod JON ONILOOHS WTSnOWL 8 NOLLOYS SECTION 9 REPLACEMENT OF COMPONENT 1 CONTROL BOX 1 POWER GENERATING PCB 1 If one or more results of verification checks are out of specification or trouble shooting chart indicates power generating PCB should be replaced 2 Since power MOS FETs and C MOS micro computer chips are used great care should be paid against electrostatic discharge ESD a Personnel who handle PCB should touch the grounding screw green yellow wire in the control box and discharge the static electricity from his body before working b Replaced PCB should be stored in the anti static bag 2 TIMER PCB 1 If one or more results of verification checks are out of specification or trouble shooting chart indicates timer PCB should be replaced 2 Since micro computer on the timer PCB is C MOS type same care as power generating PCB should be paid against ESD 3 Since screws are used against plastic panel don t over tighten when installing a new PCB 4 After new timer PCB is installed following confirmation adjustment and setting must be per formed If the setting of b d below is not changed from factory setting for the previous timer PCB only a is necessary a is always necessary a Tube current confirmation and adjus
18. 0 0 32 0 50 0 63 0 80 1 25 0 40 0 63 0 80 1 00 1 60 7 0 10 0 20 0 20 0 32 0 40 0 20 0 32 0 40 0 50 0 63 0 20 0 40 0 40 0 63 0 80 F04 4 0 08 0 13 0 16 0 20 0 32 0 13 0 20 0 25 0 32 0 50 0 16 0 25 0 32 0 40 0 63 T 0 05 0 08 0 10 0 13 0 16 0 08 0 13 0 16 0 20 0 32 0 10 0 16 0 20 0 25 0 32 aoe 4 0 06 0 10 0 10 0 16 0 20 0 10 0 16 0 20 0 25 0 40 0 10 0 20 0 25 0 32 0 40 7 0 03 0 05 0 06 0 08 0 13 0 05 0 08 0 10 0 13 0 20 0 06 0 10 0 13 0 16 0 25 TABLE 2 Speed Setting and Exposure Time Long Cone unit sec Speed ik Child Adult Obese Setting 1 2 T4 T5 Ti T2 T3 T4 T5 T2 T3 T4 T5 F09 4 0 40 0 63 0 80 1 00 1 60 0 63 1 25 1 25 2 00 2 50 0 80 1 25 1 60 2 00 3 20 7 0 25 0 40 0 50 0 63 1 00 0 40 0 63 1 80 1 00 1 60 0 50 0 80 1 00 1 25 2 00 F04 4 0 16 0 25 0 32 0 50 0 63 0 25 0 50 0 50 0 80 1 00 0 32 0 50 0 63 1 00 1 25 7 0 10 0 16 0 20 0 25 0 40 0 16 0 25 0 32 0 40 0 63 0 20 0 32 0 40 0 50 0 80 iog 4 0 13 0 20 0 25 0 32 0 50 0 20 0 32 0 40 0 50 0 80 0 25 0 40 0 50 0 63 1 00 1 0 06 0 13 0 13 0 20 0 25 0 10 0 20 0 25 0 32 0 40 0 13 0 25 0 25 0 40 0 50
19. 00 F 15 and any two of them can be programmed for easy selection If the doctor uses a different film speed or prefers darker or lighter radiographs the new speed can be programmed as follows Higher speed settings make films darker If film speed is increased by 1 exposure time becomes 25 longer 1 Keep the 4 selection switch and 7mA selection switch depressed simultaneously for more than 3 seconds Release the switches if the ready light starts to flash 2 Push F switch momentarily until the a light above the F switch illuminates The exposure time display window shows the present film speed for a setting The factory default setting F 09 should be displayed By depressing Q switch increase or decrease film speed number until desired number for a setting is displayed 3 change the b setting from the factory default 05 push F switch momentarily until the b light illuminates By depressing S switch increase or decrease film speed until the desired number for b setting is displayed 4 Press T1 switch to store these settings then turn the main power switch off B SPEED FOR DIGITAL IMAGING BELRAY II MODEL 097 x ray has 16 speeds for digital imaging d 00 d 15 The factory setting is 4 06 and with this setting the exposure time becomes half of F 06 setting As the sensitivity is different according to each manufacturer of digital imaging sensors this setting should be adjusted To get
20. 6 If multimeter indicates 107 110 of rated line voltage and ready lamp doesn t comes on set to Pc 1 by depressing switch next to the exposure time display window If multimeter indicates 90 93 of the rated line voltage and ready lamp doesn t comes on set to Pc 2 by depressing switch next to the exposure time display window After the display becomes suitable value press the patient switch to store the value in the memory on timer PCB Ifthe setting is stored electronic chime will sound twice Turn off the main switch and wait for a while and turn on again If the ready lamp is still off although the multimeter indicates 90 110 of the rated line voltage the wave form of line voltage is far from sine wave more than 396 or transformer on the power generating PCB or timer PCB might be defective 21 SECTION 5 PERIODIC INSPECTION AND ADJUSTMENT Following inspections and adjustments should be performed after installation when parts are changed and once every 6 months by a trained service technician to ensure that the x ray unit is functioning with the manufacturer s specifications and remains in compliance with the standard 1 ELECTRICAL INSPECTION AND ADJUSTMENT 1 POWER SUPPLY VOLTAGE Power supply voltage must be within the operable range 90 11096 of rated line voltage Confirm the power supply voltage before turning the unit on 1 Open the front panel of control box by loosening two screw
21. BELRAY II MODEL 097 DENTAL X RAY SERVIGE MANUAL for USA amp CANADA exeat INDEX SECTION 1 TECHNICAL DATA page 1 ELECTRICAL AND RADIATION DATA 2 2 PHYSICAL DIMENSIONS 8 5 3 3 TUBE HEAD THERMAL CHARACTERISTICS 4 SECTION 2 OPERATION INSTRUCTION 1 LAYOUT OF CONTROL BOX 5 2 FUNCTION OF CONTROLS n HII 6 3 OPERATING PROCEDURES Hh 8 4 OPTIONAL HAND EXPOSURE SWITCH 8 5 ALTERATION OF SETTING 9 SECTION 3 DESCRIPTION FOR FUNCTIONS 1 GENERAL 2 2 14 2 AUTOMATIC VOLTAGE REGULATOR 15 3 PRIMARY CIRCUIT OF HIGH VOLTAGE TRANSFORMER 15 4 PRIMARY CIRCUIT OF FILAMENT TRANSFORMER 16 5 AUTOMATIC TUBE CURRENT CONTROL 16 SECTION 4 ADJUSTMENT 1 AVR VOLTAGE 17 2 INSPECTION OF TUBE CURRENT HII 19 3 ADJUSTMENT OF TUBE CURRENT HII 20 4 ADJUSTMENT OF LINE VOLTAGE MEASUREMENT ERROR 21 SECTION 5 PERIODIC INSPECTION AND ADJUSTMENT 1 E
22. CE DIVIDING H SINE WAVE RESISTOR POWER PCB R89 OUTPUT OF AVR COMPUTER SQUARE 94 53 0 5Vac 1 ON WAVE POWER PCB RELAY RELAY DROPPER DROPPER RESISTOR RESISTOR FIGURE 3 Block diagram of AVR circuit 3 PRIMARY CIRCUIT OF HIGH VOLTAGE TRANSFORMER 1 Back reducer parallel circuit of resistor and diode to reduce the reverse voltage of x ray tube and switching device Triac are added to AVR output and applied to the primary winding of high voltage transformer 2 Both power lines to the primary winding of high voltage transformer are on and off by Triac and relay Relay activates soon after the exposure switch is depressed and Triac turns on after the pre heating period is finished and at zero crossing timing of line voltage 15 4 PRIMARY CIRCUIT OF FILAMENT TRANSFORMER 1 CIRCUIT AND OPERATIONAL TIMING 1 Parallel circuit of resistor and transistor is added in series to the AVR circuit and applied to the primary circuit of filament transformer 2 As Triac is not inserted in this circuit voltage is applied to the filament transformer if the relay mentioned above turns on 3 Triac in the primary circuit of high voltage transformer turns on at zero crossing point after the pre heating period 2 ADJUSTMENT OF OUTPUT 1 The length of time period during the transistor makes the voltage across the resistor be shortened or opened decides the power to the filament of x ray tu
23. E The ready light will not illuminate unless the incoming line voltage is correct and within the x ray s operable range 108 132VAC 3 Select the appropriate tooth type 5 9 and confirm the pre selected conditions cone type film or digital mA and patient size are suitable for exposure NOTE To manually set the exposure time depress either of the manual Exposure Time Adjust Switches or until the desired exposure time appears in the Exposure Time Display Window 16 While the unit is in manual mode other selection switches 5 15 do not affect exposure time of the tooth selection lights are off To return to the automatic exposure time selection mode depress any one of Tooth Selection Switches 5 9 4 Depress the Exposure Switch 8 When the Exposure Switch is depressed the Exposure Warning Light 17 illuminates and the audible warning sounds Do not release the Exposure Switch until the Exposure Warning Light and audible warning automatically shut off Failure to keep the switch depressed will result in exposure being terminated prematurely 5 To continue to radiograph other teeth just select appropriate Tooth Selection Switches 5 9 IMPORTANT To protect x ray tubehead from heat accumulation wait for a time interval that is equal to 50 times the selected exposure time before making additional exposures Example a 25 sec wait is necessary between exposures that are 0 5 sec in dur
24. LECTRICAL INSPECTION AND ADJUSTMENT 22 2 MECHANICAL INSPECTION 8 23 SECTION 6 ERROR CODE 24 SECTION 7 TROUBLE SHOOTING ee 27 SECTION 8 REPLACEMENT OF COMPONENT 1 CONTROL BOX 0606000600000000000000000009090000000000000090909090909000000000009 28 2 TUBE HEAD 2 8 SECTION 9 CIRCUIT DIAGRAM 29 SECTION 10 PARTS IDENTIFICATION 1 ARM AND HEAD ASSEMBLY 30 2 CONTROLLER ASSEMBLY 31 SECTION 1 TECHNICAL DATA 1 ELECTRICAL AND RADIATION DATA T X ray tube desee e ern e e ep Toshiba D 0712 Stationary Anode Eocalspot 2 352 eee etie 0 7 mm b Target material sseni roino aa iner orn E ia EES Tungsten Target angle 16 d Maximum anode heat 4 3 6 2 Maximum x ray tube assembly heat content 150kJ 210kHU 3 Rated peak tube potential 0400422 70 4 Rated tube current
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26. ation 6 Turn OFF the Main Power Switch 1 in order to prevent accidental exposure when the unit is not in use NOTE If the unit is left over 8 min without being operated and Main Power Switch 1 is kept on figure 1 runs through the Exposure Time Display Window 16 This does not mean that malfunction of the unit has occurred this is an energy saving feature The unit returns to ready condition by pressing any one of the switches except the Exposure Switch 18 4 OPTIONAL HAND EXPOSURE SWITCH An optional hand exposure switch can be connected to the sub controller Since this exposure switch has a coiled cord operators can stand in the most suitable position for operation As controller has separate connector for this exposure switch both exposure switch 18 on the front panel of sub controller and this hand exposure switch can be used If local code prohibits use of both ask installer to disconnect the connector of either switch 5 ALTERATION OF SETTINGS 1 SPEED SETTING FOR FILM AND DIGITAL IMAGING A FILM SPEED Prior to shipment of the x ray from the factory the following two film speeds are programmed to be selected by the Film Speed Selection Switch Film speed F 09 equivalent to ISO speed group D or Kodak Ultra speed Film b Film speed F 04 equivalent to ISO speed group F E or Kodak InSight Film In addition to these two speeds BELRAY II MODEL 097 x ray can provide 16 different film speeds F
27. be To protect the filament off period of the transistor is adjusted around the peak point of sine wave of line voltage 2 Longer the off period of the transistor becomes the primary voltage becomes lower and tube current decreases 3 Although off period of the transistor during pre heating is adjusted by h XX value off period during exposure cannot be adjusted manually as the micro computer adjusts it automatically for each pulse according to the tube current at that time this system tube current during exposure can not be adjusted improve this changing e XX value makes the reference value for tube current increased or decreased 4 After all tube current at the beginning of exposure can be adjusted by h XX setting and tube current at stabilized period of exposure is adjusted by e XX setting Both h XX and e XX have 32 stages 00 1F 10 F 15 Higher setting makes tube current increased 3 OVER CURRENT PROTECTION 1 Over current protection in the AVR circuit works with relatively high current As the rated current for primary circuit of filament transformer is approx 0 2 Aac this over current protection circuit will not work when the abnormal condition occurs in the filament circuit 2 Current sensing resistor is inserted in the primary circuit of filament transformer When the voltage across this resistor makes LED of photo coupler ON E 04 is displayed and output voltages to the high voltage transformer and filament
28. changed by same procedures NOTE For digital imaging 4 mA is recommended to get good contrast and precise exposure time control SECTION 3 DESCRIPTION FOR FUNCTIONS 1 GENERAL The Belmont Belray II model 097 is advanced 70 intra oral x ray machine consisting of four major components tube head balance arm main controller and sub controller Because of its modular design sub controller can be readily remotely located to accommodate room design and radiation control requirements The main controller consists of power generator timing and control circuits Since Belray II model 097 utilize the AVR automatic voltage regulator circuit instead of step up down transformer to compensate line voltage fluctuation and also tube current is controlled by feed back system quality of x radiation is quit stable over whole range of exposure time from 1 pulse to 3 2 seconds Precise and short exposure time enables Belray II model 097 to use with the digital image receptor The tube head is a vacuum sealed oil cooled unit with the high voltage transformer and x ray tube self contained No high voltage lines run outside of the head Except for mechanical repairs yoke bearings etc or external wiring problems tube head must be replaced as a unit It can not be opened in the field The counterbalanced arms provide a precisely balanced long reach support for the x ray head These arms contain highly tensioned springs which can cause serious injur
29. e Cover 2 6 1A04JAO0 Yoke Side Cap 22 ECQR30C0 Spring Adjuster Cover 1 Yoke Side Screw 3 X 8 23 60 0 Arm Cover No 2 1 8 1A037RA0 Lock Nut for Cone 24 Balance Arm No 2 1 9 IPOIKHAO Regular Cone 25 ECPJ64C0 Cover for Joint No 2 1 10 IPOIKJAO Long Cone Option 26 58 0 Joint No 2 1 11 1POICDAO Balance Arm Assembly 27 59 0 Arm Cover No 1 12 62 0 Head Key 28 0 Balance Arm No 1 1 13 ECQR24A0 Stopper Ring 2 29 6 Left Cover for Joint No 1 2 147 Sele Arm Collar Screw M4 8 2 30 ECPJ62FO Right Cover for Joint No 1 2 15 ECQR31A0 Arm Collar 31 15 0 Joint No 1 1 16 1A04DZAO0 Wire Harness in Balance Arm 4 32 ECLJ82A0 Balance Arm Wrench 4 30 2 CONTROLLER ASSEMBLY 87 OPTION 82 ID No Parts No Description QTY ID No Parts No Description QTY 1 1A04BYAO Wall Plate 1 22 Stopper Screw M6 1 2 ECPE34A0 Arm Mounting Bracket 1 23 Screw for Chassis M4 X 10 4 3 1A0389A0 Chassis I 24 ECNR24A0 Hole plug for End Cap 2 4 1A03Z6A0 Power PC Board 1 25 Screw for Chassis M4 X 6 2 5 End Sc
30. ead the multimeter during exposure NWARNING X RADIATION IS GENERATED FOR 2 SECONDS 9 Multiply the voltage reading by 2 becomes tube current If reading is 3 45 Vdc then tube current is 3 45 X2 6 9 mA This value is the tube current at the stabilized portion of the exposure By this method tube current at the beginning of exposure cannot be measured ADJUSTMENT OF TUBE CURRENT Tube current at beginning of exposure can be adjusted by h XX setting and tube current at stabilized portion of exposure can be adjusted by e XX setting If tube current is checked by auto mode as mentioned on page 16 and if tube current is out of range successive exposure sets h XX and e XX to adequate value automatically If tube current is checked by manual mode as mentioned on page 16 h XX and e XX should be adjusted manually as follows 1 MANUAL SETTING METHOD FOR h XX Q N ar Check tube current at beginning of exposure by manual mode as page 16 If tube current is out of the range of 0 5 mA from the rated current perform following adjustment Turn on the main switch Keep depressing P patient C cone film button until h XX is displayed on the exposure time window Select the tube current that should be adjusted If tube current is lower than 0 5 mA at step 1 press switch next to the exposure time display window and h XX value displayed will be increased If tube current is higher than 0 5
31. ec selects the cone type 8 standard cone or 12 optional long cone If the optional rectangular cone is to be used select the 8 standard cone setting 11 Film Speed Selection Switch a BELRAY II has 16 film speed settings 00 15 Two speed settings are pre set at the factory a amp b and can be selected with 11 Film speed No 09 equivalent to ISO speed group D or Kodak Ultra Speed film b Film speed No F 04 equivalent to ISO speed group or Kodak InSight film b Pushing this switch momentarily displays the selected film speed setting in the Exposure Time Display Window 16 Depressing this switch for more than 2 sec changes the film type being selected c If the Digital Imaging Switch 12 is depressed both of the film speed indicating light a amp b are turned off 12 Digital Imaging Switch If a digital imaging system is used shorter exposure time is often required BELRAY II has 16 speeds for digital imaging d 00 d 15 Pushing this switch momentarily displays the speed being selected in the Exposure Time Display Window 16 With the factory speed setting d 06 the exposure time becomes half of E 06 setting 6 TABLE 1 Speed Setting and Exposure Time Regular Cone unit sec Speed T Child Adult Obese Setting 1 2 T4 T5 Ti T2 T3 T4 T5 T2 T3 T4 T5 09 4 0 20 0 32 0 40 0 50 0 8
32. endencies to drift can be corrected by tightening brake screw in horizontal arm Balance Arm Do not tighten beyond what is required to Wrench prevent drift Loosen 2 BALANCE ARM TENSION ADJUSTMENT 1 Place the balance arm assembly into position 2 If either balance arm drifts higher or lower Arm Tighten the set position remove the spring adjuster cover Spring Adjuster and adjust the balance arm spring tension with Cover FIGURE 6 the balance arm wrench FIGURE 6 3 HEAD POSITIONING A Place head into position B If head drifts from the set position adjust the brake screws according to the following procedures FIGURE 7 1 Loosen the yoke side cap screw 03 x 8mm tapping screw and remove the yoke side cap 2 Adjust the six brake screws using a screw driver Y lt Side Loosen 3 After adjustment reattach the yoke side cap and screw Cap Screw FIGURE 7 4 MECHANICAL SAFETY Heec 1 The wall plate if used should be checked to confirm its secure attachment to the wall 2 The arm mounting bracket should be checked to confirm its secure attachment to the wall mounting plate or to the wall 3 Check to insure the horizontal arm is not raising up and out of the arm mounting bracket This should be observed routinely by treatment room personnel 23 Dunes X Od JO Jewod pue VLE LZL X Od 198 01 sse
33. f cone 19 Leakage technique factor 70 kVp 0 14 mA 0 14 mA 15 maximum rated continuous current for 7 mA with a duty cycle 1 50 20 Duty tee pe eoe re ete tet 1 50 0 5 sec exposure with 25 sec interval 21 Maximum deviation of tube potential tube current and exposure time a Below 0 15 setting 2 10 kVp 2 mA Ipulse b 0 15 setting 8 kVp 1 mA Ipulse 22 Measurement base of technique factors peak tube potential 0 04400 Peak tube potential of conducting half cycle De ti bes Currents eer respete tert de none reete Average of tube current during one cycle of line frequency C eXDOSUTE Ime s ioo obere br PEERS Impulses of power line frequency 23 1 5 mm AI over 24 Source to the base of cone distance 81 mm 25 Environmental condition for storage 20 70 C 10 100 500 1060hPa 26 Environmental condition for operation 10 40 30 70 700 1060hPa 2 PHYSICAL DIMENSIONS 2 1 4 3 3 16 58 31 1 2 800 ___ 46 7 8 1190 80 _ Stroke 43 5716 1100 1 SG 1 E un 45 1 2 1156 MAX 73 1 8 1857 34 1 2 19 1 16 62 3 16
34. je uey Jo Bunes je vuug uey SI ainsodxe SNINV3IN s xx e pue xxu 1 0 Jo si juauno eqn ji siu Jo 9 oj ajay eqn y 09490 00 JO UBIY 00 SI jueuno eqn 79 uonipuoo BuisseooJd y 108102 peeds Buisseooud JO uonnjos eui Y29049 ejenbepe SI uonipuoo peeds eyenbepe jes ed pejoejes eq pjnous euoo pue juened ujoo ejenbepe ed pue euoo juened yoo y yous 00 JO Buoj euin einsodxy 1461 Jo 00 si eunsodxe 10 uojws fumes JO 00 e e dsip eunsodxe au 2949 0070 Bunes euin einsodx3 Uoyws eunsodxe SI 5 seunsodxe eq ued j YDNMS eunsodxe y jo ZNO JO pue poys pue Od ZNO JP8UU0ISIJ eAnoejep SI e pessaudep SI ainsodxe USYM HEIS JOU seop eunsodx3 god Jeu pejsnipe eq INS eDeyo YAY JI pue 154 god Jewod eAnoejep eq god W
35. mA press W switch and decrease the h XX value displayed has 32 kinds of values 00 1F Next to 915 and consequently F equals to 15 Press the patient switch to memorize the h XX value displayed to the memory If value is stored electronic chime will should twice Turn off the main switch and check the tube current at beginning of exposure again If tube current is within 0 5 mA from the selected current PH adjustment is finished If tube current is still out of the range repeat step 2 6 above 2 MANUAL SETTING METHOD FOR e XX l 2 Check tube current at stabilized portion of exposure by the manual mode page 16 or by the direct measurement page 17 If tube current is out of the range of 0 5 mA from the rated tube current perform following adjustment Turn the main power switch 20 Duns 4 Keep depressing P patient C cone F film button until e XX is displayed on the exposure time window Select the tube current that should be adjusted Press T2 switch then display changes to e XX is the value presently memorized If tube current is lower than 0 5 mA from the rated tube current at step 1 press switch next to the exposure time display window and e XX value displayed will be increased If tube current is higher than 0 5 mA press W switch and e XX value displayed will be decreased has 32 kinds of values Press the patient switch to memorize the e
36. ont panel of the main controller and place one lead of multimeter to JP3 2 on the power PCB and other lead of multimeter to TP2 a wire ring test terminal on the power PCB Refer to FIGURE 4 4 Turn on the main switch on the main controller 5 Depress the T2 T3 and P patient switches on the sub controller simultaneously until the letters Adj appears in the exposure time display window 6 Sellect 7mA and press the exposure switch to geta reading It should be 94 5Vac 0 5Vac NOTE TO PREVENT OVERHEATING OF THE FILAMENT RELEASE THE EXPOSURE SWITCH AS SOON AS POSSIBLE AFTER THE VOLTAGE VALUE IS OBTAINED 7 If the AVR voltage is higher than this range adjust pot at center of counterclockwise very slightly and repeat step 6 to get reading Repeat until an AVR voltage setting becomes within the range of 94 5 0 5Vac NCAUTION MAKE SURE 7 mA IS SELECTED IF 4 mA IS SELECTED VOLTAGE IN STEP 6 IS TOO HIGH AND HEAD WILL BE DAMAGED FIGURE 4A JP3 2 and on Power PCB 17 Alternative method to adjust AVR voltage Adjusting method of AVR voltage on page requires the tube head to be connected If by any reason AVR voltage should be adjusted without head following method can be used In this method the reference voltage for AVR circuit is adjusted 1 Prepare a digital multimeter capable to measure 10 Vac within 3 0 01 Vac accuracy 2 Set the range of digital multimeter at 10Vac 3 Tu
37. rew M6 X 15 2 26 Screw for Cover M3 X 8 2 6 1 0387 0 Restriction Plate I 27 1A037WAO Chassis for Sub Controller 1 7 1A0386A0 Front Panel 1 28 1 037 0 Front Panel for Sub Controller 1 mr Screw for Front 3 6 1 29 ECQRS8AO Protector for Timer PC Board 1 9 1 0178 0 Main Power Switch 1 30 IAO3LAAO Timer PC Board 1 10 1A0385A0 Front Cover 1 31 68 0 for Hand Exposure Switch Option 1 1 1A04JFAO Side Cover 1 32 Hand Exposure Switch Assembly Option 1 12 1 04 0 Horizontal Arm Frame 1 Tapping Screw Option 1 13 ECLJ36A0 Arm End 2 34 Front Cover screw for Sub Controller M3 8 2 14 70 0 Arm Bottom Cover 2 35 Wood Screw 4 1 x 20 2 15 IPOICXAO Wire Harness in Horizontal Arm 800mm 1 36 1A03CKAO Switch sheet 1 POICZAO Wire Harness in Horizontal Arm 300mm 1 37 POICEAO Horizontal Arm Assmbly 800mm 1 1 01 0 0 Wire Harness in Horizontal Arm 500mm 1 1P01B7A0 Horizontal Arm Assmbly 300mm 1 Wire Harness in Horizontal Arm 650mm 1 POICGAO Horizontal Arm Assmbly 500mm 1 1 01 Wire Harness in Horizontal Arm 1000mm 1 Horizontal Arm Assmbly 650mm 1 16 Lag Screw 9 75 4 IPOICFAO Horizontal Arm Assmbly 1000mm 1 17 Machine Bolt M8 20 3 38 1PO1CJAO Main Controller Assembly 1 18 4
38. rn off the main switch Open the front panel of the main controller and connect one lead of multimeter to TP3 a wire ring test terminal on the power generating PCB Connect the other lead of multimeter to P2 test terminal on the power generating PCB Refer to FIGURE 4B 4 Turn on the main switch and select 7mA CAUTION MAKE SURE 7 mA IS SELECTED IF 4 mA IS SELECTED VOLTAGE IN STEP 5 IS TOO HIGH AND HEAD WILL BE DAMAGED 5 Voltage reading should be within the range of 7 36 7 40 Vac 6 If the voltage is out of this range then adjust pot near the TP3 test terminal very slightly to make the voltage reading within 7 36 7 40 Vac FIGURE 4B TP2 and the Power Generating PCB 2 INSPECTION OF TUBE CURRENT Model 097 has two types of self measuring function for tube current i e auto mode and manual mode Tube current can also be measured directly by multimeter In auto mode both tube current at the beginning and stabilized period of exposure are checked and adjusted automatically although the values of tube current are not displayed In manual mode the value of tube current is displayed at the exposure time display window but additional operations are necessary to adjust the tube current In case of two methods mentioned above tube current is measured by the micro computer on the power generating PCB Last method is direct measurement of voltage Tube current is converted into
39. s on top of control box 2 Set the range of digital multimeter at 300Vac connect probes of multimeter to L and N terminals of terminal block in the control box 3 Confirm that the reading is rated line voltage 10 2 CONFIRMATION OF TUBE CURRENT Confirm the tube current at beginning and at stabilized portion of exposure by auto mode as page 16 3 EXPOSURE WARNING BUZZER AND LAMP a Exposure warning buzzer Make an exposure and confirm that the exposure warning buzzer located within the control box is activated during the entire exposure b Exposure warning lamp Make an exposure and confirm that the exposure warning lamp illuminates during the exposure Exposure warning lamp is located on the front panel of the control box 4 LINE VOLTAGE REGULATION Make sure that a main power switch is OFF 2 Open the front panel of control box by loosening two screws on top of the control box 3 Set the range of digital multimeter at 300 Vac connect probes of multimeter to L and terminals of terminal block in the control box 4 Turn the main power switch on and select 7mA and set the exposure time at 2 00 seconds by switch next to the exposure time display window Record the no load line voltage VN indicated by the multimeter before the exposure 6 Make an exposure and record the load voltage VL indicated by the multimeter during the exposure WARNING X RADIATION IS GENERATED FOR 2 SECONDS NOTE Read the m
40. tment b Film speed setting c Priority setting for patient cone and film speed d Electronic chime on off setting 2 TUBE HEAD 1 If one or more results of verification checks are out of specification or trouble shooting chart indicates tube head should be replaced 2 When dismounting the head from arm be careful of the arm A WARNING AS BALANCE ARM IS HIGHLY TENSIONED IT IS NECESSARY TO PLACE THE HEAD AT MAXIMUM HEIGHT BEFORE REMOVING HEAD 3 After new head is mounted adjustment of tube current is always necessary Perform h XX and e XX adjustment according to the steps described at auto mode on page 16 28 CIRCUIT DIAGRAM SECTION 10 9 9 Eel seal enig sued Wdy p4eog 1 1 29 SECTION 11 PARTS IDENTIFICATION 1 ARM AND HEAD ASSEMBLY 40 OPTION ID No Parts No Description QTY ID No Parts No Description QTY 1 X RAY Head Assembly 17 19 0 Left Cover for Joint No 3 1 2 ECPE24CO Yoke 18 ECPE18FO Right Cover for Joint No 3 1 3 1A037UA0 Yoke Inside Cover 19 17 Joint No 3 1 4 Yoke Inside Cover Screw M4 15 20 ECQR33A0 Cushion Absorber 1 Gras Head Housing Cover Set 2 21 27 0 Crevic
41. transformer are terminated instantly 5 AUTOMATIC TUBE CURRENT CONTROL 1 CIRCUIT 1 Tube current fed back from tube head is converted into voltage by the resistor totally 5000 on power generating PCB 2 This voltage is integrated for each pulses of line frequency by the operational amplifier and applied to the micro computer 2 STABILIZING METHOD OF TUBE CURRENT 1 If the tube current of certain pulse measured by micro computer is lower than the rated value 4mA or 7mA the off period of the transistor of next pulse is decreased Shorter off period makes the output voltage for filament increased and as the result tube current is increased 2 If measured tube current 15 higher than the rated value off period of next pulse is increased Longer off period makes the output voltage for filament decreased and as the result tube current is decreased 3 This feed back control for filament is used during the exposure only During pre heating period output for filament transformer is constant because no tube current is fed back 16 SECTION 4 ADJUSTMENT 1 AVR VOLTAGE Output voltage of Automatic Voltage Regulator circuit can be measured and adjusted as follows If AVR voltage has been adjusted tube current must be adjusted after that 1 Prepare a digital multimeter capable to measure 100 Vac with 1 or more accuracy 2 Turn off the main switch Set the suitable range of digital multimeter to measure 100 Vac 3 Open the fr
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43. ultimeter after the value is stabilized about one second after the exposure starts 7 Calculate line voltage regulation R 96 in the formula below R VN VL VL X100 R must not exceed the range of 0 396 If it is greater than 3 the size of the power supply wires must increased Refer to the power supply requirements of the model 097 installation instructions to determine the correct wire size necessary 22 2 MECHANICAL INSPECTION 1 ARM ASSEMBLY 1 Incorrect leveling of the wall plate and wall bracket can cause arm drift First check leveling with horizontal arm in position 1 FIGURE 5 If not correct bracket must be adjusted by placing shims behind the wall plate IMPORTANT If the end of the horizontal arm shown in position 1 is pitched below level then the tube head will drift away from the wall If the end of the horizontal arm in position 1 is pitched above level then the arm will require only minimum adjustment of the brake screw 2 Check leveling in position 2 if not correct adjust ee Level Horizontal Arm as follows FIGURE 5 Arm a Slightly loosen two top mounting bolts for arm mounting bracket b Shift the bracket left or right until the arms are accurately leveled c Move horizontal arm to positon 1 E J 2 gt 10 d Fully fenon two top bolts Tod Bottom Mounting e Fully tighten bottom mounting bolt Bolt FIGURE 5 NOTE Slight t
44. witched and set at the most appropriate time 2 ELECTRONIC CHIME ON OFF An electronic chime sounds when switches are depressed If preferred this sound can be deactivated as follows 1 Keep T1 and 12 switches depressed together for more than 3 seconds Release the switches if the ready light starts to flash 2 bu 2 will be displayed in exposure time display window 3 By depressing either or W switch display changes to bu 0 4 Press P switch Patient type Switch to store this setting and turn off the main power switch NOTE Exposure Warning Buzzer and alarm sound of error code can not be eliminated 243 3 PRIORITY OF SELECTIONS Factory default setting Cone Regular cone Film Speed Digital Imaging off mA selection 7 mA Patient Type Adult If necessary these settings can be changed For example if digital imaging is used for pedodontistry digital imaging and child patient type should be selected 1 Keep 4mA selection switch and 7mA selection switch depressed simultaneously for more than 3 seconds Release the switches if the ready light starts to flash 2 Press D switch momentarily Light above D switch illuminates and speed setting for digital imaging is displayed on exposure time display window 3 Select the patient type child by depressing P switch momentarily 4 Press T1 switch to store these settings then turn the main power switch off 5 Cone type mA selection can be
45. y if accidentally released CAUTION DO NOT ATTEMPT TO DISASSEMBLE THESE ARMS IN THE FIELD 4 2 AUTOMATIC VOLTAGE REGULATOR 1 Model 097 is equipped with the automatic voltage regulator AVR in the control box Purpose for this function is as follows a As the line voltage fluctuation including voltage drop during exposure is absorbed stabilized voltage is supplied to the high voltage transformer and filament transformer As a result output x radiation is highly stabilized b If auto transformer is used to compensate the voltage fluctuation there always exists some voltage error because of stepping adjustment AVR in Model 097 is using Field Effect Transistor to adjust the voltage so no voltage error exists principally c When line voltage fluctuates in case of auto transformer operator must adjust the voltage by changing the tap of transformer AVR circuit adjusts the voltage automatically and requires no operation to user d The outer dimension and weight of control box can be reduced by eliminating a heavy auto transformer 2 Block diagram of AVR circuit is described in FIGURE 3 3 Power FET field effect transistor controls the AVR voltage as the voltage of reference sine wave and the voltage divided from AVR output becomes the same value and the same wave form 4 Output voltage of AVR is 94 5 0 5 POWER MOS FET FIELD EFFECT TRANS S TOR DEVIDING RESISTOR 2 R76 COMPARATOR REFEREN
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