Gymna Pulson 330 Service Manual
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Gymna Pulson 330 Service Manual

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1. Contents

1. Contents ..........................................................1
2. Preface ...........................................................1
3. Introduction ......................................................3
4. Important remarks .................................................4
5. General technical data. ...........................................6
6. Block diagram. ....................................................7
7. Operation panel ...................................................8
8. Right side panel. ................................................10
9. Power supply. ....................................................11
10. Microcontroller circuits. .......................................13
10.1 The microprocessor (µp). ......................................13
10.2 Microprocessor guard components...............................13
10.3 I²C bus.......................................................13
10.4 Relay 4 (RLY4)................................................14
10.5 Microprocessor (µp) pin description. ..........................14
11. Keyboard. .......................................................17
12. US power and output stage. ......................................19
12.1 Measuring and displaying US power.............................19
12.2 Automatic power density limitation............................20
12.3 Switched mode power supply....................................20
12.4 The ADDA convertor............................................20
12.5 Output frequency generation...................................21
12.6 Relay drivers.................................................21
13. US output stage .................................................23
13.1.1 Voltage measurement. ......................................24
13.1.2 Current measurement. ......................................24
13.2 Relay circuits................................................24
13.3 Contact control...............................................25
13.4 Cable fraction detection......................................25
14. The display circuit. ............................................28
14.1 Display circuits..............................................28
14.2 Display warnings..............................................28
15. Error codes. ....................................................30
16. Measuring points. ...............................................31
17. Replacement procedures. .........................................32
17.1 Bottom plate..................................................32
17.2 Main PC board (ELUL 004-L100-V20).............................32
17.4 Display PCB (ELUL 004-L400-V20)...............................32
17.5 Power transformer.............................................33
18. Repairing PC boards. ............................................34
18.1 Which tools are necessary ?...................................34
18.2 Which procedure has to be followed?...........................34
19. Storage and transport. ..........................................35
20. Microprocessor versions and upgrades. ...........................36
20.1 The upgrade routine...........................................36
20.2 Microprocessor software versions..............................36
21. The ultrasound heads. ...........................................37
22. Returning defective parts. ......................................39
22.1 Guarantee claims..............................................39
22.2 Defective parts...............................................39
23. PCB layouts. ....................................................42
24. Spare parts. ....................................................46

2. Preface

As in every field, technology moves fast in the area of electro-
medical equipment.
Both electronically and medically, immense progress has been made over
the last couple of years.
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Summary of Contents for Gymna Pulson 330

  • Page 1: Table Of Contents

    1. Contents 1. Contents ............1 2. Preface ............1 3. Introduction ............3 4. Important remarks ..........4 5. General technical data..........6 6. Block diagram.............7 7. Operation panel ...........8 8. Right side panel..........10 9. Power supply.............11 10. Microcontroller circuits........13 10.1 The microprocessor (µp).
  • Page 2 If you have any questions or if you need additional information about this manual or about the use of the pulson 330, please do not hesitate to contact us. Page 2...

  • Page 3: Introduction

    The Pulson 330 is a modern micro-controlled apparatus, intended for ultrasound therapy. It is a member of the Gymna family, and thus built according to the newest requirements concerning the European security standards. The unit is portable and can therefore be used for in-house treatments as well as for domestic use.

  • Page 4: Important Remarks

    To understand and practice all procedures described in this manual a good technical background is a must. Gymna will not be held responsible for any actions executed on the unit by unauthorized persons, or for executing any procedures not prescribed in this manual.
  • Page 5 Data registration document Information Distributor name Distributor address Customer name Customer address Instrument name: Pulson 330 Serial number: Date of delivery: Service activities Date: Error complaint: Service action Critical spare parts exchange list Critical part name Old serial number New serial number PCB Display.

  • Page 6: General Technical Data

    5. General technical data. • Treatment unit Mains voltage: 115/230 Vac +- 10% Frequency: 50/60 Hz Mains fuses: 1A type L Current consumption: maximum 500 mA Dimensions 100 mm Weight: 5 kg. Labels Hazard warning label Serial number label Type identification label Fuse value label Bauartzulassungs Nr.

  • Page 7: Block Diagram

    6. Block diagram. • Reference list: Microcontroller circuits: page 13 Guard components: page 13 Display: page 27 Keyboard: page 16 ADDA-convertor: page 19 Amplitude generation circuit: page 18 Frequency generation: page 20 Output stage: page 22 Output relays: page 23 Harmonic filter: page 22 Treatment heads:...

  • Page 8: Operation Panel

    7. Operation panel 1. US- power display. The intensity is displayed in W/cm². 2. Treatment time display. Displayed in Min & Sec. Maximum treatment time is 30 minutes. The timer runs only when the contact control is sufficient. 3. Intensity up key. Maximum intensity is 2 W/cm•. 4.
  • Page 9 For a good understanding, some important notes have to be taken into consideration: The right side panel has 2 US-output connections, CON2 and CON3. The pulson 330 is designed in such a way that it always detects which head is connected to which output gate.

  • Page 10: Right Side Panel

    8. Output connector 2 (CON 2). Can be connected to a 3/1 Mhz head. 9. Mains entrance. The pulson 330 must be connected to a wall socket with a earth contact. Use only the original cable that is supplied with the apparatus in accessories package.

  • Page 11: Power Supply

    9. Power supply. Main fuses are inserted in the main entrance ( F1 and F2, 1A fast ). The transformer contains a thermic fuse . It will cut off the primary winding, when the inside temperature exceeds 120 °C. To switch on again, transformer temperature has to go below about 60 °C.

  • Page 13: Microcontroller Circuits

    10. Microcontroller circuits. 10.1 The microprocessor (µp). The pulson 330 uses a Z86E21, a One Time Programmable (OTP) microcontroller which controls all sequences necessary for the apparatus to function. It has on board ROM (8K), and RAM. Clock speed is defined by an external crystal, which runs at 12 MHz.

  • Page 14: Relay 4 (Rly4)

    10.4 Relay 4 (RLY4). After the instrument has been switched on , or the 1/3 MHz-key has been pressed, the µp checks the head sizes of all heads connected. RLY4 closes the HEAD_SIZE line, and reads the size of all heads connected to the apparatus.
  • Page 15 • SIZE_DET Output signal, high active. Activates RLY4 during start-up in order to detect head size of all heads connected to the instrument. • US 1/3 Output signal. In case of logic high level, RLY1 activated. At this time, RLY 3 , which is always in opposite position, is inactivated.

  • Page 17: Keyboard

    11. Keyboard. The keyboard consists of only 7 keys, which therefore can be directly coupled to the µp. C8 filters out all HF-noise, and all diodes prevent keyboard discharges from entering the processor inputs. The keyboard is connected to CON4. Another feature of this circuit is the ability to detect the hardware version from the apparatus.

  • Page 19: Power And Output Stage

    12. US power and output stage. 12.1 Measuring and displaying US power When the INT_UP key is pressed, a certain output voltage (1 or 3 MHz) is obtained, and the crystal starts vibrating on resonance frequency. However, not all electrical power is transformed into acoustical vibrations.

  • Page 20: Automatic Power Density Limitation

    12.2 Automatic power density limitation. The equipment automatically reduces the US output density to about 2W/cm•. When the calculated value exceeds 2.2W/cm•, the equipment tries to reduce the output power by reducing US_AMPLITUDE, the output voltage of the ADDA. 12.3 Switched mode power supply. U1 (MC33166), and the circuits around it, define the switched mode power supply.

  • Page 21: Output Frequency Generation

    The info of signals 1 to 4 are sent to the µp which will interprete these signals in order to determine output power, to detect the quality of contact and to see which ;heads are connected. The only information coming from the µp is the wanted US_AMPLITUDE ( see 8).

  • Page 23: Output Stage

    13. US output stage Normally, DRIVE_FREQ is a 1or 3MHz signal. However, when the output stage is switched off, it will be equal to VCC. Working: The 1/3 MHz square wave signals ( DRIVE_FREQ and NOT DRIVE_FREQ ) are fed to the two buffers of U4, which are necessary because on these frequencies, the gates of fets Q2 and Q3 are able to consume about 300 mA.

  • Page 24: Output Voltage And Current Measurement

    13.1 Output voltage and current measurement. In order to display the output power and to monitor whether there is sufficient contact between the head and the treatment surface, an voltage and current measurement are necessary. For all measurements, only peak values are used. 13.1.1 Voltage measurement.

  • Page 25: Contact Control

    HF noise, which may possibly disturb the µp. 13.4 Cable fraction detection. The Pulson 330 is provided with a detector, which constantly monitors the cable of the active US head. In case of a cable fraction, the display shows Cab, and the treatment is ended.
  • Page 26 Each time the pulse is sent, the voltage over this led is measured, and fed to Q12. When the led lights up, the voltage at C28 is about 2.4 V. To conduct, the voltage at the zener must be 2.7 V, so Q12 will stay closed.

  • Page 28: The Display Circuit

    14. The display circuit. The pulson 330 uses 7 segment L.E.D. displays. All display circuits are placed on a separate PCB, which is installed directly under the front panel. 14.1 Display circuits. The display PCB is connected to the main board PCB via CON7.

  • Page 30: Error Codes

    Eeprom. Solution: Change the Eeprom ( IC U10 ). Since every Eeprom contains values specific for one output stage, the US output PCB and the Eeprom have to be returned to GYMNA for recalibration. ERR 3: Eeprom read Solution: same as ERROR 3.

  • Page 31: Measuring Points

    16. Measuring points. Anode D22: 5 V stabilised. Kathode D21: - 5 V stabilised. Following values can only be measured when the US - box is opened. L12: 32 VDC. Pin 1 CON 1/2: + 15 V stabilised. R35: + 15 V +/- 1%. Pin 14 of U15: + 5 V DC.

  • Page 32: Replacement Procedures

    17. Replacement procedures. 17.1 Bottom plate. Removal: Switch off the unit and remove the mains cable from the mains entrance. Put the unit upside down and remove the screws . The bottom plate can now be removed by putting a small screwdriver under the bottom plate.

  • Page 33: Power Transformer

    and Q3. You can now take out the US board. Installation: Same but in reverse order. 17.5 Power transformer. Removal: Disconnect connectors from CON 3, CON 6 and VLK 5 (earth cable). Unscrew the bolt in the middle if the transformer. Installation: Same but in reverse order.

  • Page 34: Repairing Pc Boards

    This calibration data has to be stored in the Eeprom, which can only be done by Gymna. The same goes for changing the Eeprom. Please send the US board together with the Eeprom to GYMNA. 18.2 Which procedure has to be followed? After repairing always follow the test procedure described in chapter.

  • Page 35: Storage And Transport

    19. Storage and transport. The Pulson 330 unit must always be stored and transported in its original package. This package withstands normal shocks and vibration caused by transport. The same conditions are required for accessories and spare parts. Page 35...

  • Page 36: Microprocessor Versions And Upgrades

    20. Microprocessor versions and upgrades. The Pulson 330 uses a One Time Programmable microprocessor. The actual software version can be checked in following ways: 1. Push one keyboard key while switching on the instrument. The intensity display shows the software version, while the timer display shows the hardware jumper situation.

  • Page 37: The Ultrasound Heads

    21. The ultrasound heads. Page 37...
  • Page 38 Page 38...

  • Page 39: Returning Defective Parts

    You can see that the RAN number has been filled in. Fill out the number and the rest of the data on the ‘ PARTS RETURN TAG’ and tag the defective part. All accepted parts can now be send to the GYMNA service department. Page 39...
  • Page 40 Request Return Defective Parts Service from GYMNA-UNIPHY SERVICE DEPARTMENT Tel: +32 (0)89 510.560 Fax: +32 (0)89 510.561 PART TO BE COMPLETED BY THE CUSTOMER COMPANY NAME AND ADDRESS Treated by: DNV • Fax Number: • Your Reference: • Date: ARTICLE INFORMATION •...
  • Page 41 PARTS RETURN TAG Page 41...

  • Page 42: Pcb Layouts

    24. Spare parts. All spare parts used in the pulson 330 unit are listed in following pages. It gives a separate list for each PCB as well as for the accessories. We marked the spare parts from which we think there are important to keep in stock with an I ( second column ).
  • Page 43 Spare parts list for 1/3 MHz ultrasound heads PCB Article Description Ordering number X-tal 3 MHz (with resistance) 11067 X-tal 1MHz (with resistance) 09492 PCB for X-tal 3 MHz 10856 PCB for X-tal 1 MHz 10848 Upper housing Aluminium (1/3 Mhz) 12424 Under housing aluminium (1/3 Mhz) 12423...
  • Page 44 Spare parts list for PCB: ELUL 004 - L100 - V20 PCB Article Description Ordering number 1. PCB complete 10555 PCB complete ELUL 004-L100-V20 2. Capacitors C1,3,24,26 100nF/100V SS 3589 C2,65,66,67,68 100uF/25 V 7431 10000uF/ 10 V 9057 2200uF/ 35 V 8004 100uF / 35 V 7426...
  • Page 45 PCB Article Description Ordering number L4940 8136 79L05 3663 9. Buzzer SV4/5 3696 10. Connectors CON1 Stripcontact 2p 8430 CON3 Stocko header 4p 8085 CON4 stripcontact 8p 8435 CON5, 6 modu I10p straight print 9726 CON7 BL11-5 CON10 3M-16PDR VLK1 to 4 PCB blade 4.8 x 0.8 3550 header 50p...

  • Page 46: Spare Parts

    Spare parts list for PCB: ELUL 004 - L300 - V20 PCB Article Description Ordering number 1. PCB complete 10558 PCB complete ELUL 004-L300-V20 2. Capacitors C1,10 47 pF/ 100 V DS 3585 C2, 3, 21 3n3 F / 100 V DS 10258 C4, 5, 6, 7, 8, 9 C11, 13, 15, 16,...
  • Page 47 PCB Article Description Ordering number 56 K/ 4W 30 K MRS 25 7458 39 K MRS 25 8024 5K6 / 4W 3. Diodes D1, 2, 3 BAT 85 PH 9239 D4, 5, 6 1N 5822 schotky 8084 D11, 12, 13, 14 1N4148 3600 LM 336 5.0...
  • Page 48 9. Connectors CON 1, 2 stocko header 5P 8007 CON 8 SUBD 15 p male 9728 TP1, 2, 3, 4, 6, 7, 8 header 50p x 5.54 x 12 3549 Page 52...
  • Page 49 Spare parts list for PCB: ELUL 004 - L400 - V20 PCB Article Description Ordering number 1. PCB complete 10578 PCB complete ELUL 004-L400-V20 2. Capacitors C1, 3, 4 15 uF / 6.3 V SMD C2, 8 2n2 F SMD C5, 6, 7 47 nF SMD 3.

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