Thermo Scientific STP-120 Service Manual
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Thermo Scientific STP-120 Service Manual

Tissue processor
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TISSUE PROCESSOR
STP-120
SERVICE MANUAL
Version 01/14

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Summary of Contents for Thermo Scientific STP-120

  • Page 1 TISSUE PROCESSOR STP-120 SERVICE MANUAL Version 01/14...

  • Page 2: Table Of Contents

    STP 120 Tissue Processor - Service Manual CONTENTS: CERTIFICATION .......................3 GUARANTEE ......................3 SAFETY ........................4 TECHNICAL DATA ....................5 TOOLS AND MATERIALS REQUIRED ..............7 TROUBLESHOOTING ....................8 THE UNIT DOES NOT START ................8 NO DISPLAY ....................... 12 THE PARAFFIN BATHS DO NOT HEAT UP ............13 WARNING MESSAGES ON THE DISPLAY ............

  • Page 3: Certification

    Modular Inclusion Centre - Technical Information CERTIFICATION The manufacturer certifies that this instrument has been carefully tested and verified and that it complies with all applicable specifications before being shipped from the factory. The instrument complies with all applicable international safety standards. GUARANTEE This product is guaranteed against all defects in material and workmanship for a period of 1 (one) year.

  • Page 4: Safety

    STP 120 Tissue Processor - Service Manual SAFETY ATTENTION: Please, observe the following general safety precautions when operating this instrument. Non-compliance with these instructions means that you are invalidating the standards of safety and use for which this instrument was designed. The manufacturer shall not assume any responsibility for inadequate use of the instrument or for any failure resulting from non-compliance with basic safety requirements.

  • Page 5: Technical Data

    STP 120 Tissue Processor - Service Manual Technical Data Type STP-120 EC Directives Applicable Standards Refer to note on next page Electromagnetic compatibility Sizes Diameter of the carrousel 850 mm Height 500 – 700 mm Diameter of the turning circle...
  • Page 6 STP 120 Tissue Processor - Service Manual Programming Number of programs 10 (selectable) Programmable infiltration time per station from 1 s to 99 h 59 m Rotation stirring selectable Vertical shake selectable Centrifugation selectable Centrifugation time selectable Program start delay selectable without time limit Environmental conditions Humidity max.

  • Page 7: Tools And Materials Required

    STP 120 Tissue Processor - Service Manual Tools and materials required Any maintenance work or adjustments to the STP 120 Tissue Processor requires the use of the following tools and materials: • Tester (Multimeter) • Flat blade and Phillips screwdrivers (small and medium size) •...

  • Page 8: Troubleshooting

    STP 120 Tissue Processor - Service Manual Troubleshooting Problem: THE UNIT DOES NOT START Symptoms: The 'POWER' LED does not light up. 1. Disconnect the unit from the mains power supply 2. Check the mains power supply cable. 3. Make sure that the mains voltage is the same as the voltage indicated in the window beside the mains switch.
  • Page 9 STP 120 Tissue Processor - Service Manual Procedure for placing the 1. Disconnect the unit from the mains power supply. unit in position for 2. Activate the emergency battery: dismantling the base - Turn the key switch located on the rear of the unit one quarter turn to the right and hold it in position for about two seconds.
  • Page 10 STP 120 Tissue Processor - Service Manual 8. Locate the resistance circuit board 1 as shown in the figure below Dismantling the Front keypad lower part and display Ring BASCAR V15 transformer Circuit board MICCAR V30 Resistance Circuit board circuit board Resistance circuit board 9.
  • Page 11 STP 120 Tissue Processor - Service Manual Check whether there is a voltage of 12 V on terminals 17 and 19 of Measure the voltage the BASCAR V15 circuit board (refer to page 10 and the wiring on resistance circuit diagram on page 37) board CON6 TRF Disconnect the power supply cable and replace resistance circuit...

  • Page 12: No Display

    STP 120 Tissue Processor - Service Manual Problem: NO DISPLAY • The display does not light up or only black lines appear on the Symptoms: front panel display • Text or strange symbols appear on the display • The display lights up but no text appears Adjusting the contrast: Adjust the contrast of the display by simultaneously pressing the UP and DOWN keys for a few seconds.

  • Page 13: The Paraffin Baths Do Not Heat Up

    STP 120 Tissue Processor - Service Manual THE PARAFFIN BATHS DO NOT HEAT UP Possible causes If one of the paraffin baths does not heat up this may be due to: • Faulty paraffin bath: - Heater - Thermal circuit breaker •...
  • Page 14 STP 120 Tissue Processor - Service Manual Paraffin bath Output terminals Fuses (6.3AT) Circuit board to the bath input terminals 10 (optional) 9 - 10 11 - 12 5 - 6 7 - 8 1 - 2 3 - 4 The fault is in the paraffin baths or the wiring between the Check the output BASCAR V15 circuit board and the connectors on the rear of...

  • Page 15: Warning Messages On The Display

    STP 120 Tissue Processor - Service Manual Warning messages on the display This message appears when the unit does not receive the signal that     the battery is fully charged or when the battery or the charging and control system are defective.
  • Page 16 STP 120 Tissue Processor - Service Manual This alarm condition is produced when the unit detects a drop in the   mains voltage or whenever there is a failure in the power supply to the electronic circuit boards. Refer to point 3 on page 8 and make sure that the voltage shown is correct.
  • Page 17 STP 120 Tissue Processor - Service Manual This message appears on the display when the unit does not detect a      signal from one of the temperature probes (sensors) in the paraffin baths. (In the example, probe 11). Before starting the unit using the switch on the rear, make sure ...
  • Page 18 STP 120 Tissue Processor - Service Manual Replace the Before proceeding to replace the temperature probe make sure that the temperature probe following materials are available: • Electronic temperature sensor, reference STP-059 • Cyanoacrylate adhesive (e.g. Loctite, etc.) • Silicone for semiconductors •...
  • Page 19 STP 120 Tissue Processor - Service Manual Should the error persist, first replace the BASCAR V15 circuit board and test the unit. If the unit continues without correctly identifying the probe(s), replace the MICCAR V30 circuit board. When replacing the circuit boards, refer to the procedure for placing the unit in position for dismantling on page 9 and the procedure for replacing the circuit boards on page 10 and following.
  • Page 20 STP 120 Tissue Processor - Service Manual This alarm will appear in either of the following two cases:     1. If the € key is pressed while the program is running and the basket remains out of the reagent recipients for more than 2 (two) minutes, there is a risk that the samples will dry out.
  • Page 21 STP 120 Tissue Processor - Service Manual This message appears:   • when the unit detects that the drive motor for the rotating movement    (station change) malfunctions, or • if the microswitch for station change is damaged and does not detect that the motor is turning When the carrousel begins to rotate, if the unit does not detect that the microswitch indicating station change has tripped within 1 (one) minute, the...
  • Page 22 STP 120 Tissue Processor - Service Manual This message appears:   • when the unit detects that the drive motor for the vertical movement   (elevation/agitation) malfunctions, or • if the position sensors are damaged and do not detect the vertical movement When the vertical motor starts, if the unit does not detect activation of the corresponding vertical position sensor within 2 (two) minutes, the...
  • Page 23 STP 120 Tissue Processor - Service Manual LEDs for the sensors and microswitches DL7 DL8 DL9 DL10 DL11 DL12 LEDs indicating the status of the sensors / microswitches (off when the sensor / microswitch is activated) Ref. Corresponding to: Microswitch station 12 Microswitch end of station change Reserve (always lit) Reserve (always lit)
  • Page 24 STP 120 Tissue Processor - Service Manual Verification of the Proceed as follows to determine whether the error originates in the status of the detectors BASCAR V15 circuit board, the station change microswitches, station 12, or the vertical position sensors: 1.

  • Page 25: Replacement Of Components

    STP 120 Tissue Processor - Service Manual Replacement of components BATTERY Replacing the battery or the fan 4 screws holding the fan in place Polar connector (battery) 2 screws holding the battery in place Battery 12 V DC Polar connector (fan) Proceed in the same 1.

  • Page 26: Activated Charcoal Filter

    STP 120 Tissue Processor - Service Manual ACTIVATED CHARCOAL FILTER MAINS SWITCH BATH CONNECTOR Replacement of components Bath connectors Activated charcoal filters (2) Mains switch (power supply) Procedure 1. Disconnect the unit from the power supply 2. Remove the screws holding the component in place and replace it with an identical component.

  • Page 27: Dismantling The Upper Part

    STP 120 Tissue Processor - Service Manual DISMANTLING THE UPPER PART • For operations Addition of a second basket • involving: Replacement of limit switches and detectors • Replacement of motors Refer to the procedures on the following pages Cover Belt tensor 6 screws (metal disk)
  • Page 28 STP 120 Tissue Processor - Service Manual General procedure 1. Connect the unit to the mains power supply and turn the Main ON/OFF switch on 2. Once the unit has completed the self-check, press the € key to raise the cover to uppermost position. 3.
  • Page 29 STP 120 Tissue Processor - Service Manual VERTICAL MOTOR MOTOR FOR ROTATING THE BASKET Replacing the motors Horizontal motor (station change) Motor for rotating the basket Vertical motor (raise/lower) HORIZONTAL MOTOR MICROSWITCHES / DETECTORS Detector for the upper position (top). Station change microswitch.

  • Page 30: Location Of Components And Reference Numbers

    STP 120 Tissue Processor - Service Manual - Appendix Location of components and reference numbers STP-002 STP-025 STP-012 STP-024 STP-020 STP-018 STP-019 STP-022 STP-009 STP-021 STP-010 STP-061 STP-047 STP-060 STP-048 STP-017 Page 30...
  • Page 31 STP 120 Tissue Processor - Service Manual - Appendix STP-045 STP-044 STP-042 STP-050 STP-008 STP-049 STP-040 Page 31...
  • Page 32 STP 120 Tissue Processor - Service Manual - Appendix STP-035 STP-037 STP-041 STP-094 STP-036 STP-006 STP-015 STP-016 Page 32...
  • Page 33 STP 120 Tissue Processor - Service Manual - Appendix STP-034 STP-033 STP-028 STP-030 STP-032 STP-031 Page 33...

  • Page 34: Spare Parts List

    STP 120 Tissue Processor - Service Manual - Appendix Spare parts list CODE DESCRIPTION STP-001 CARROUSEL PROCESSOR BASIS STP-002 CARROUSEL PROCESSOR COVER STP-003 CORCOM MAINS CONNECTOR PLATE STP-004 PARAFFIN CONNECTOR PLATE STP-005 LOWER BACK COVER STP-006 LOWER FRONT COVER No 104 STP-007 ACTIVATED CHARCOAL FILTER HOLD PLATE STP-008...
  • Page 35 STP 120 Tissue Processor - Service Manual - Appendix CODE DESCRIPTION STP-049 ACTIVATED CHARCOAL FILTER FAN 115V STP-050 ACTIVATED CHARCOAL FILTER STP-051 GREASE STP-052 METAL CHASSIS PARAFFIN VESSEL STP-053 METAL LOWER LID PARAFFIN VESSEL STP-054 PARAFFIN VESSEL LEGS STP-055 WALL CHISEL CABLE PARAFFIN VESSEL STP-056 ALUMINIUM TANK PARAFFIN VESSEL STP-057...

  • Page 36: Appendix

    STP 120 Tissue Processor - Service Manual - Appendix Appendix Wiring diagrams Wiring diagram ..................37 BASCAR V15 circuit board ..............38 List of components ................39 MICCAR V30 circuit board..............47 List of components ................48 Page 36...
  • Page 37 STP 120 Tissue Processor - Service Manual - Appendix Wiring diagram Page 37...
  • Page 38 STP 120 Tissue Processor - Service Manual - Appendix BASCAR V15 Board Page 38...
  • Page 39 STP 120 Tissue Processor - Service Manual - Appendix Components list BASCAR V15 Board Quantity Type Reference 11,12 0.4A-ST 1/35-T C4, C15 R11, R36, R38, R40, R44, R47 R15, R16, R17 1N4007 D2, D3, D4 1R-3W R24, R25, R33, R34 2A-ST 2.2NF-MKT C13, C14...
  • Page 40 STP 120 Tissue Processor - Service Manual - Appendix Quantity Type Reference BZW33B D2SE-MIL2 RELE1 J26B J50B JMP2G JUMP3 K814P KBPC2500 L6203 IC8, IC9, IC12, IC13 L6506 IC10, IC14 LED ROJO DL1, DL2, DL3, DL4, DL5, DL6, DL7, DL8, DL9, DL10, DL11, DL12 LM193 IC15...
  • Page 41 STP 120 Tissue Processor - Service Manual - Appendix MICCAR V30 Board Components list MICCAR V30 Board Quantity Type Reference 470 uF/35 C1,C3,C5 10 uF/35-T C2,C4,C6,C58,C59 1uF/35T C7,C14 100 nF-C C8,C15,C16,C17,C21,C27,C28,C37,C38,C39,C40,C43,C52, C53,C54,C55 1 nF-C C9,C10,C11,C12,C13,C26,C29,C30,C31,C32,C33,C34,C35, C36,C44,C45,C46,C47,C48,C49,C50,C51,C56,C57 15 pF-C C18,C19 N.C. J6,IC20,D37,C60,R76 BZX5V8 D8,D1...
  • Page 42 STP 120 Tissue Processor - Service Manual - Appendix Quantity Type Reference DS2430 M48T18 80C32 74HC373D IC4,IC12,IC13,IC14 MAX691CWE 27C512 74HC138 74HC00 74HC374D IC10,IC11,IC15,IC16,IC17 ICL7660 CSA IC18 DS1669S-10K IC19 K817P IC21,IC22 BP26V-LP J7,J1 BP50V-LP JMP3 J3,J9 PONT SMD SOLDAR PONT BP20V-LP VERMELL CHOQUE L2,L3,L4,L5...

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