Diesse CHORUS TRIO Service Manual
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Diesse CHORUS TRIO Service Manual

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SERVICE MANUAL
FOR CHORUS TRIO (REF. 81200) AND CHORUS TRIO RAS (REF. 81220)
REVISION 1 Issued in April 2021
Software version 7.xx
THIS MANUAL IS TO BE USED FOR CHORUS TRIO INSTRUMENTS STARTING
FROM S/N 4000 OR UPDATED WITH CHORUS EXPANDER UPGRADE KIT
(REF 83600)
FOR IN VITRO DIAGNOSTIC USE ONLY

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  • Page 1 SERVICE MANUAL FOR CHORUS TRIO (REF. 81200) AND CHORUS TRIO RAS (REF. 81220) REVISION 1 Issued in April 2021 Software version 7.xx THIS MANUAL IS TO BE USED FOR CHORUS TRIO INSTRUMENTS STARTING FROM S/N 4000 OR UPDATED WITH CHORUS EXPANDER UPGRADE KIT...
  • Page 2 This page is intentionally left blank...
  • Page 3 CHORUS TRIO models: The present manual refers to the following CHORUS TRIO models with the 7.xx family of software installed: Catalog number Description 81200 CHORUS TRIO 81220 CHORUS TRIO RAS Manual revisions list: Manual revision Description of changes 0 of 03/2021 First issue relative to Chorus TRIO with Expander Correction of paragraph 2.2 following the replacement of the...
  • Page 4 No page in this manual may be reproduced in any form or by any means, electronic, mechanical or otherwise, for any use whatsoever without prior written permission from DIESSE Diagnostica Senese S.p.A. CHORUS TRIO EXPANDER SERVICE MANUAL Rev. 1.0 (04-2021)
  • Page 5 Crush hazard: moving parts can crush and cut; keep hands away Risk of thermal shock due to the warming of the tray for samples Risk of puncture to hands and fingers due to the presence of needles for collection and dispensing Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...
  • Page 6 LIMITATIONS AND WARNINGS Version 7.00, revision 0 of this manual corresponds to the CHORUS TRIO model of the instrument with the 7.xx family of software installed. It was drafted and carefully reviewed and this version is closely related to the (data can be obtained from the instrument’s ID plate)

  • Page 7: Table Of Contents

    Dispensers ....................................33 3.7.3 X-axis movement .................................. 34 3.7.4 Level sensor test ..................................35 3.7.5 Transfer test ....................................35 3.7.6 Strip perforation ..................................37 Optical unit ....................................... 38 4.1 Light source ....................................38 Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...
  • Page 8 6.1.4 Faulty drain pump................................65 6.2 Waste circuit testing procedure ........................... 65 6.2.1 Checking of waste level warning sensor (WS) ....................65 6.2.2 Checking of waste level error sensor (ES) ......................66 CHORUS TRIO EXPANDER SERVICE MANUAL Rev. 1.0 (04-2021)
  • Page 9 Unsuccessful Connection with CPU 2010 board .................. 105 10.1.4 Firmware upload on the CPU 2010 board ....................106 10.1.5 Replacement of the Carrier+IMX8 board ....................108 10.1.6 Methods saving ................................108 10.1.7 Calibrations saving ............................... 109 Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...
  • Page 10 10.3.15 Syringe Unit ..................................128 10.3.16 Rotation ....................................129 10.3.17 Tray synchronization device ..........................129 10.3.18 Led box and filter handler ............................129 10.3.19 Tank probes ..................................129 10.3.20 Tubing ....................................130 CHORUS TRIO EXPANDER SERVICE MANUAL Rev. 1.0 (04-2021)

  • Page 11: Moving The Strips

    The functioning of the system is based on the carrying out of hydraulic, optical and mechanical operations in certain positions called workstations. The workstations are mounted on a base located above the tray called the upper level, shown in the figure below: Fig. 1-1 Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...

  • Page 12: The Tray

    2. relative hole sensor (13) that check the movement of the tray (step check) 3. synchronization device abbreviated TSD that allows the tray to be locked in each of the work positions. CHORUS TRIO EXPANDER SERVICE MANUAL Rev. 1.0 (04-2021)
  • Page 13 Upper surface Column Lower surface Strip tray Tray synchronization device (TSD) Absolute tray sensor Tray shaft with pulley Drive belt Drive shaft with pulley Temporary lock nut Tensioning bracket Hole sensor (relative) Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...

  • Page 14: Absolute Sensor

    The magnet ensures an absolute mechanical zero position and therefore alignment of the tray. 1.3.2 STEP CHECK Every step that the tray makes during the cycle needs to be checked to ensure that it was done correctly. CHORUS TRIO EXPANDER SERVICE MANUAL Rev. 1.0 (04-2021)

  • Page 15: Synchronization

    (detail B in the Fig. 1-6). At the end of the operation the pin completely enters the hole and locks the tray in the desired position. (detail C in the Fig. 1-6). Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...

  • Page 16: Strip Housing

    There are two holes at the bottom of every slot that allow the optical ray to pass through. The diagram below shows the top view of a plate with 28 strips fully inserted, one strip partially inserted and one position empty. CHORUS TRIO EXPANDER SERVICE MANUAL Rev. 1.0 (04-2021)

  • Page 17: Tray Lock

    Plate alignment is one of the operations for setting the instrument. The aligning of the plate is designed to position the plate in the exact work point where the following conditions have to be checked: Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...
  • Page 18 The operations to align the tray must be done using the service program present on The Chorus Trio equipped with the Expander (IMX8) module. To access the service program, proceed as follow: Chorus / Utility / Service The login Password is “diesse”...

  • Page 19: Strip Recognition Unit

    Power Off Sensors 7. Move manually the plate of one position and come back to the window Strip not present 8. Check at the row that the sensor is on (yellow colour) Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...

  • Page 20: Internal Barcode Reader

    CAB533 connects directly with the 2010 CPU while the LD2 LED represents the power supply LED. Fig. 2-3 2.2.1 Internal barcode reader check and calibration Insert a strip with a valid code in the position n° 25 of the tray Motors 2. Open the window: CHORUS TRIO EXPANDER SERVICE MANUAL Rev. 1.0 (04-2021)
  • Page 21 10. Insert others strips in the tray and open the window: Chorus / Utility / Service / Diagnostics / Test Macros / Identification Test Scan 11. Run the command and check that all the strips are read correctly. Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...

  • Page 22: Transfer Unit

    ▪ water that collect on the outer side of the needle. main waste well Each of these wells has a drain that directs the water to the CHORUS TRIO EXPANDER SERVICE MANUAL Rev. 1.0 (04-2021)

  • Page 23: The Strip, Needles And The Well

    The needle is also used as a level sensor, by connecting it to a piezoelectric circuit through a special screened cable soldered to the needle. Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...
  • Page 24 10. toothed rack 11. pinion 12. motor 13. position sensor 14. fork 15. slider for the drum slide sezione DESTRA FRONTE SINISTRA A - A 16. spring 17. tapering 18. tip Fig. 3-3 CHORUS TRIO EXPANDER SERVICE MANUAL Rev. 1.0 (04-2021)

  • Page 25: X-Axis Movement

    10. wash access area 11. slide 12. access to the strip wells 13. toothed belt 14. idle pulley 15. base plate pulley Fig. 3-4 Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...

  • Page 26: The Syringe Unit

    10. syringe unit 11. syringes 12. clamping bracket 13. fixing bracket 14. solenoid valves 15. position sensor Fig. 3-5 CHORUS TRIO EXPANDER SERVICE MANUAL Rev. 1.0 (04-2021)

  • Page 27: The Transfer Function

    Disp no. 1 is dedicated to the transfer of serum, diluent and substrate ▪ Disp no. 2 is dedicated to the conjugate. ▪ Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...

  • Page 28: Priming Of The Dispensing And Wash Circuit

    For quantities from 21 μl to 100 μl, an extra 5 μl is taken. ▪ For quantities above 100 μl, an extra 20 μl is taken. ▪ When the amount of liquid is destined for mixing, no extra amount is taken. CHORUS TRIO EXPANDER SERVICE MANUAL Rev. 1.0 (04-2021)
  • Page 29 The duration of the needle washing is defined in the Wash mode parameter, which is set whenever a certain transfer procedure is defined. It can have a value from 0 to 5, according to the following table. Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...

  • Page 30: Drying Of The Tip

    Pre-boring is done automatically by the procedure, before proceeding with the suction hole. Nevertheless, this is avoided if the well is already perforated. CHORUS TRIO EXPANDER SERVICE MANUAL Rev. 1.0 (04-2021)

  • Page 31: Level Detection

    The sensitivity of the sensor is measured as: minimum detectable amount of liquid (≥ 50 μl) and min 10 μl discrimination, which indicate the minimum level difference that can be detected in cuvettes containing at least 50 μl. Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...

  • Page 32: Mixing

    Mixing is controlled by two transfer function parameters: NumAg Shaking number: number of withdrawals/dispensings to perform ▪ Shaking quantity: the amount that is withdrawn and dispensed to perform the ▪ mixing CHORUS TRIO EXPANDER SERVICE MANUAL Rev. 1.0 (04-2021)

  • Page 33: Simple Transfer

    6. shifting to the home position 7. expulsion of the extra amount and washing of the needle Disp #1 washing of drying of Disp #1 disp #1 carries out a vertical reset Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...
  • Page 34 3. Shifting to well 6 (Cuvette 4. Dispensing of Quantity #1 5. Shifting to the home position 6. expulsion of the extra amount and washing of the needle. CHORUS TRIO EXPANDER SERVICE MANUAL Rev. 1.0 (04-2021)

  • Page 35: Calibrations And Control Parameters

    2. Open the window: Chorus / Utility /Service / Diagnostics / Test Macros / Level Sensor Test Iterations 3. Double click on the line and insert the intended measurements number (ex. 5). Then click Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...

  • Page 36: X-Axis Movement

    The offset of the X-axis is determined by the Carriage offset parameter. This parameter indicates the steps correction necessary to bring the dispensing needles from the home position (determined by the absolute sensor) to the washing position (reset position). CHORUS TRIO EXPANDER SERVICE MANUAL Rev. 1.0 (04-2021)

  • Page 37: Level Sensor Test

    A personalized transfer can be launched through the command Chorus / Utility / Service / Diagnostics / Test Macros / Transfer Test in order to check all the devices involved in the transfer function. Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...
  • Page 38 If, during the test, the instrument finds an error, a report with the difference between the expected values (Ex) and the measured ones (Ms) will be printed: TRASF:Smp# -; Stp# -; Tr# -Ex: 100; Ms:90; diff : -10 ; MaxDiff :50 CHORUS TRIO EXPANDER SERVICE MANUAL Rev. 1.0 (04-2021)

  • Page 39: Strip Perforation

    8. Since two perforations are performed, each well is characterized by two data lines. The maximum Diff must be lower then 15 steps. If during the test the Diff measured is higher then 15 steps, it is necessary to replace the needle. Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...

  • Page 40: Optical Unit

    As shown in the figure, the optical device used to take the measurements, in each of the three positions, is made up of a light transmitter mounted on the upper plate and a light receiver mounted on the lower plate CHORUS TRIO EXPANDER SERVICE MANUAL Rev. 1.0 (04-2021)

  • Page 41: The Optical Channel

    When one of these elements is modified, the characteristics of the optical channel are modified. An interleaver thus combines an odd optical channel (the most external, corresponding to well no. 5) and an even optical channel (the most internal, corresponding to well no. 6). Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...

  • Page 42: Positioning Of Filters

    In the Chorus TRIO, the amount of light received ( ) is initially detected as electrical voltage and then converted with a 12-bit A/D into a number that can range from 0-1023.
  • Page 43 – �� ��20 ������−�������� ������ = ������ (�� − �� �������� ������−�������� the measurement includes two parameters: transmittance in water - voltage off-set value for the dark off-dark These two parameters are determined: Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...

  • Page 44: Alignment Of The Optical Fibres

    To obtain the same optical response from displaced optical fibres, the incident light must be different depending on the optical fibre taken into consideration. This means that the lamp is powered with a different voltage depending on the optical fibre to be controlled. CHORUS TRIO EXPANDER SERVICE MANUAL Rev. 1.0 (04-2021)
  • Page 45 5 to 12 Volts in steps not less than 10 mVolts. This is to ensure that the six optical fibres are adjusted to within  5 of the reference value. Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...

  • Page 46: Calibration Of The Optical Channels

    When the system, for a certain optical filter, measures water, it must read the maximum transmittance value possible. This value must correspond to 1023 digit for the system. CHORUS TRIO EXPANDER SERVICE MANUAL Rev. 1.0 (04-2021)

  • Page 47: The Control Ramp

    To therefore prevent gaps between one characteristic and another, the 8 characteristics are generated so that the adjoining characteristics partially overlap each other (see Fig. 4-10 a): Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...

  • Page 48: Report Of The Virtual Ramp

    This number of points, which is lost in the calculation of the totalramp, is reported as the start index. The first val, on the other hand, indicates the A/D conversion value of the lamp voltage in correspondence with the start index. CHORUS TRIO EXPANDER SERVICE MANUAL Rev. 1.0 (04-2021)
  • Page 49 5 to 40 ▪ Nramp from 700 to 800 ▪ 40015 ▪ <200 ▪ 5100.00 > V- > 5000.00 ▪ 13000.00 > V+ > 12500.00 ▪ Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...

  • Page 50: Control Window

    (Val) The selected range (Ran) The dark value (Dark) Check: performs a complete reading of the optical channels using the selected parameters Print: Prints the calibration report displayed on the screen CHORUS TRIO EXPANDER SERVICE MANUAL Rev. 1.0 (04-2021)

  • Page 51: Optical Unit Testing Procedure

    The system determines, channel by channel, the driving current of the LED to obtain an air reading approximated to 1000 dgt. The calibration has to occur in a range value not higher than 2 for each channel. Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...

  • Page 52: Check Of Absorbance At 650 Nm With Control Solutions

    5. Record the data on the test sheet and check that the ranges are respected. Warning: The values can change if the calibration solutions are changed or if they were improperly stored CHORUS TRIO EXPANDER SERVICE MANUAL Rev. 1.0 (04-2021)

  • Page 53: Check Of Absorbance At 450 Nm With Control Solutions

    4. At the end of the reading cycle, the absorbances are shown on the display and they can be printed or exported through a USB key; 5. Record the data on the test sheet and check that the ranges are respected. Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...
  • Page 54 110-190 8,3% 0,125 SL4459 230-330 5,1% 0,25 SL4458 470-610 2,4% SL4457 1070 1040 1092 1066 1083 1049 1067 950-1150 1,8% SL4456 2035 2035 1990 2036 1992 2035 2021 1800-2200 1,1% Fig. 4-15 CHORUS TRIO EXPANDER SERVICE MANUAL Rev. 1.0 (04-2021)

  • Page 55: Washing Unit

    #2 washer #1 Pp6: aspiration pump from the collection basin of washer #1 Pp7: aspiration pump from the needles of washer #3 aspiration pump from the needles of Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...

  • Page 56: Tank Probes

    75% level sensor hydraulic fitting electric connector band Fig. 5-2 The levels managed by the Chorus TRIO are: tank empty – the instrument stops any ongoing cycle and reports a warning buffer solution tank almost empty – if the drops below this level, a...

  • Page 57: The Washer

    10. position sensor 11. aspiration tube 12. supply tube 13. tube casing 14. spring 15. axial bearing 16. tapering RIGHT FRONT LEFT 17. Teflon covering Fig. 5-3 Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...

  • Page 58: The Drying Station

    The straight needle is used to remove the liquid in the well. The tapered needle is used to dispense washing buffer. The two needles move up and down together and the descent into the bottom of the well is dampened by a spring. CHORUS TRIO EXPANDER SERVICE MANUAL Rev. 1.0 (04-2021)
  • Page 59 , if we are in position 21 or by pump if we are in position 25. For safety purposes, each well is equipped with a pair of sensors that can report any overflowing of liquid. Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...

  • Page 60: Washing Procedure

    6. Spring dampened descent into the well, with simultaneous aspiration of the liquid through pump . At the bottom of the descent, the cuvettes are dry. 7. Return to the resting position. CHORUS TRIO EXPANDER SERVICE MANUAL Rev. 1.0 (04-2021)

  • Page 61: Washing Circuit Testing Procedure

    5.7.4 Washing of the piping for washer #2 Lower washer no. 25 to the end of stroke; Switches 2. Access to the window: Chorus / Utility / Service / Diagnostics / Switches Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...

  • Page 62: Aspiration At Drying Station #3

    4. At the end of the test, a report with the expected values (E_lvl) and the measured values (M_lvl) is displayed and printed. The measured values must be between 250 and 280 µl. Extract the strip and check that the measured level CHORUS TRIO EXPANDER SERVICE MANUAL Rev. 1.0 (04-2021)
  • Page 63 #2 Bottom level parameter: Chorus / Utility / Service / Settings / Parameters / Mechanical Calibrations Increase the steps number to lower the volume or decrease the steps number to increase the volume. Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...

  • Page 64: The Drain Circuit

    S3 10. outlet closed return inlet Fig. 6-2 11. wash well drain The waste well is the device that regulates the evacuation of the liquids not needed Chorus TRIO by the CHORUS TRIO EXPANDER SERVICE MANUAL Rev. 1.0 (04-2021)

  • Page 65: Normal Operation

    The liquid flows toward the outlet without entering in the recirculation circuit, as the diameter of the tube for this circuit is much smaller. The intervention of the warning sensor is not reported during normal operation. Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...

  • Page 66: Obstructed Drain

    The instrument stops and a fatal error is generated when the sensor is reached. If the obstructed drain is resolved before the is reached, the liquid is evacuated as normal by pump pp8. 6.1.3 Full waste tank Fig. 6-5 CHORUS TRIO EXPANDER SERVICE MANUAL Rev. 1.0 (04-2021)

  • Page 67: Faulty Drain Pump

    7. Let the water rise up to the level of the warning sensor S4 (Waste well half full); 8. Check that the Warning alarm activates (Waste well half full) and that drains the well. Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...

  • Page 68: Checking Of Waste Level Error Sensor (Es)

    Waste well full alarm must activate; 3. Disconnect the waste line from the RED PATHWAY, then insert it in the tank and wait for the well to empty and to stop. CHORUS TRIO EXPANDER SERVICE MANUAL Rev. 1.0 (04-2021)

  • Page 69: Temperature Control

    The hot air also heats the upper part of the tray for the strips and consequently the strips themselves. temperature sensor The input of hot air is regulated by a system that uses the inside the chamber. Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...

  • Page 70: Heater

    The heater is mounted on the upper plate of the Chorus TRIO by means of the 2 fastening holes support flange in the 7.3.1 Electrical properties of the heater Rated voltage: 24V DC ▪...

  • Page 71: Cycle Temperature

    Switch on the instrument and verify in the window the rise of the strip temperature. With the thermometer, check that the temperature in the strips falls within the range 36÷38 °C within 30 minutes. 7.6.3 Strip temperature correction Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...
  • Page 72 Therefore, before changing the correction value, insert more strips in different positions of the plate and wait 15 minutes. The average between the measured temperatures in the various positions must be between 36° and 37°C. CHORUS TRIO EXPANDER SERVICE MANUAL Rev. 1.0 (04-2021)

  • Page 73: Speaker-Printer Display

    Fig. 8-2 The Chorus TRIO is fitted with a thermal printer that reports the results of the various instrument tests and the results of previous tests onto paper. Thermal paper must be used for this type of printer and is supplied in rolls. As can be...

  • Page 74: Printer Testing

    4. Raise the lever and check that the signals bolow are in the following state: Printer paper Ok sensor must be switch on (yellow color); ▪ Printer carriage open sensor must be switch on (yellow color). ▪ CHORUS TRIO EXPANDER SERVICE MANUAL Rev. 1.0 (04-2021)

  • Page 75: Electronic Parts

    9 ELECTRONIC PARTS The main electronic boards of the Chorus Trio Expander are described in this chapter. 9.1 GENERAL MAP Fig. 9-1 shows the overall diagram of the instrument with the electronic boards and all the devices that are connected to it.
  • Page 76 Fig. 9-1 CHORUS TRIO EXPANDER SERVICE MANUAL Rev. 1.0 (04-2021)

  • Page 77: Carrier+Imx8 Board

    Carrier+IMX8 Board Fig. 9-2 9.2.1 Power supply and connections The Carrier+IMX8 board is powered directly from the Power Supply Unit, precisely Chorus Expander External Connection Board from the through the connector J4 (+12V). Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...

  • Page 78: Cpu 2010 Board And Driver 2010 Board

    The CPU 2010 and the Driver 2010 are the boards that deal with the execution of all the commands coming from the Carrier+IMX8 board. All the functions of the Chorus TRIO refer to them, from the moving of the motors, to the management of the hydraulics, to the acquiring of analogue signals coming from the optical sensors, etc.

  • Page 79: Power Supply

    CN11 (+5V, +12V, -12V) and cable CAB 536. The voltages are reported by means of 4 LEDs (+5V - DL5, +12V - DL6, -12V - DL7, +24V - DL8). The DRIVER 2010 board is powered through connector CN11 (+24V). Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...
  • Page 80 Fig. 9-6 Layout and connections – Complete view CHORUS TRIO EXPANDER SERVICE MANUAL Rev. 1.0 (04-2021)
  • Page 81 Fig. 9-7 Layout and connections – Sheet 1 Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...
  • Page 82 Fig. 9-8 Layout and connections - Sheet 2 CHORUS TRIO EXPANDER SERVICE MANUAL Rev. 1.0 (04-2021)
  • Page 83 Fig. 9-9 Layout and connections - Sheet 3 Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...
  • Page 84 Fig. 9-10 Layout and connections - Sheet 4 CHORUS TRIO EXPANDER SERVICE MANUAL Rev. 1.0 (04-2021)
  • Page 85 Fig. 9-11 Test Points and Settings (complete view) Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...
  • Page 86 Fig. 9-12 Test Points and Settings Sheet 1 CHORUS TRIO EXPANDER SERVICE MANUAL Rev. 1.0 (04-2021)
  • Page 87 Fig. 9-13 Test Points and Settings Sheet 2 Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...

  • Page 88: Description Of The Test Points And Cpu 2010 Board Jumpers

    Closed (default). Programming signal FPGA IC3, IC6 Open (default). Programming signal FPGA IC3, IC6 Open (default). Programming signal FPGA IC3, IC6 Open (default). Programming signal FPGA IC3, IC6 Open (default). Programming signal FPGA IC3, IC6 CHORUS TRIO EXPANDER SERVICE MANUAL Rev. 1.0 (04-2021)

  • Page 89: Description Of The Test Points And The Driver 2010 Board Jumpers

    +24V). There are also two fuses on the socket (F3 at 5V and F4 at +24V) to protect the board and the instrument. All these components can be seen in Fig. 9-17. Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...
  • Page 90 Fig. 9-14 Layout of the Low Power board in the instrument CHORUS TRIO EXPANDER SERVICE MANUAL Rev. 1.0 (04-2021)
  • Page 91 Fig. 9-15 Layout and connections - Sheet 1 Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...
  • Page 92 Fig. 9-16 Layout and connections - Sheet 2 of 2 CHORUS TRIO EXPANDER SERVICE MANUAL Rev. 1.0 (04-2021)
  • Page 93 Fig. 9-17 Test Points and Settings Sheet 1 of 2 Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...
  • Page 94 Fig. 9-18 Test Points and Settings Sheet 2 of 2 CHORUS TRIO EXPANDER SERVICE MANUAL Rev. 1.0 (04-2021)
  • Page 95 Fig. 9-19 Low Power board upgraded with Kit Expander Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...

  • Page 96: Troubleshooting

    (various wells, tanks) 9.5 POWER SUPPLY The power supply unit is located in the lower left part of the Chorus TRIO (see Fig. 9-20) and can be accessed from the rear. Its main function is to transform the line voltage into low voltage direct current needed to power the instrument.

  • Page 97: Description

    Fig. 9-22 shows the positioning of the board in the case of the power supply unit. Fig. 9-24 and 78 are shown the connections that go in and out of the power supply unit. Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...
  • Page 98 Power Supply Board Fig. 9-22 Location of the Power Supply Board CHORUS TRIO EXPANDER SERVICE MANUAL Rev. 1.0 (04-2021)
  • Page 99 Fig. 9-23 Power Supply Board connections Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...
  • Page 100 Fig. 9-24 Layout and connections - Sheet 1 of 2 CHORUS TRIO EXPANDER SERVICE MANUAL Rev. 1.0 (04-2021)
  • Page 101 Fig. 9-25 Layout and connections - Sheet 2 of 2 Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...

  • Page 102: Troubleshooting

    Fig. 9-26 shows the layout of the board inside the chassis. CHORUS TRIO EXPANDER SERVICE MANUAL Rev. 1.0 (04-2021)
  • Page 103 Chorus External Connection Board Fig. 9-26 Location of the Connectors 2010 Board Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...
  • Page 104 Fig. 9-27 Layout and connections CHORUS TRIO EXPANDER SERVICE MANUAL Rev. 1.0 (04-2021)

  • Page 105: Troubleshooting

    USB CABLE 2.0 A-B M/M 1,5 Mt 30147082 CPU CHORUS SERIAL & HOST RS232 CABLE 9.7.2 Troubleshooting The board was realized using SMD technology, therefore the board cannot be repaired in the field. Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...

  • Page 106: Service Procedures

    Diesse logo or from the main window by observing if the firmware release present in the CPU is displayed. The two boards are normally connected to each other via a serial connection;...

  • Page 107: Unsuccessful Connection With Cpu 2010 Board

    Check in the bar at the top that the proposed path is correct (run/media/sda1). Confirm with Ok if you want to save the file on the USB key with the name proposed by the software or modify it by double clicking on the file name (ex. Chorus Trio followed by serial number).

  • Page 108: Firmware Upload On The Cpu 2010 Board

    In the first case, when the instrument is turned on, the following message will appear: Fig. 10-6 Press on the button and wait for the firmware upgrade. If instead you want to force the update, it is possible to access the service from the following path: CHORUS TRIO EXPANDER SERVICE MANUAL Rev. 1.0 (04-2021)
  • Page 109 Chorus / Utility / Service / Diagnostics / Optical System / Optical Calibration Fig. 10-9 V.Ramp Dark Light Run in sequence: then Filter 450, Filter 650 Double click on select the then repeat the above-mentioned sequence. Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...

  • Page 110: Replacement Of The Carrier+Imx8 Board

    Carrier board. Anyway, if the instrument allows it, before carrying out any operation, it is advisable to retrieve the methods file (if it is not possible to download the updated file from the Diesse website) and the calibrations of the tests processed up to that moment.

  • Page 111: Calibrations Saving

    If the Carrier+IMX8 board has been replaced and it was not possible to recover the microSD card, you must check that the installed software is updated. To view the information about the software, follow the path: Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...
  • Page 112 Chorus / Utility / About If it is not updated to the latest version, go to Diesse website and download the latest version on a USB key. Software Update Then insert the USB key into the port near the printer and open the...

  • Page 113: Methods And Calibrations Upload On The Carrier+Imx8 Board

    To upload the methods and calibrations files, insert the USB key and follow the paths depicted at 10.1.6 and 10.1.7, then select the files to be uploaded and click on the Import button. Fig. 10-17 Fig. 10-18 Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...

  • Page 114: Programming Barcode Reader Zebex Z 3080

    Chorus TRIO labelled Barcode (Fig. 10-21). Warning: since the serial port also supplies the power, it is best to connect the reader with the instrument off.

  • Page 115: Programming Parameters

    DEFAULT VALUES OF RS-232C SERIAL COMMUNICATION PARAMETERS Function Default Values Handshaking protocol None ACK/NAK response time setting 300 msec Baud rate 9600 Data bit Stop bit Parity Mark Message terminator selection CR/LF Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...
  • Page 116 Transmit UPC-A check digit Transmit UPC-E leading digit Transmit UPC-E check digit Transmit Type Standard Coda bar Start/stop characters A, B, C, D Length 6~32 digits Code 128 FNC 2 append Disable CHORUS TRIO EXPANDER SERVICE MANUAL Rev. 1.0 (04-2021)
  • Page 117 MATRIX 25 Length Fix 10 digits Check digit Disable Note: The configuration of the items with asterisk (*) is effective when being appointed in advance. PROGRAM PROCEDURE USING BARCODE MENUS Fig. 10-23 Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...
  • Page 118 RS-232C ⚫ The reading of the “SHOW VERSION” label will be show firmware version. PC/AT WAND EMULATION SHOW VERSION End of Configuration CHORUS TRIO EXPANDER SERVICE MANUAL Rev. 1.0 (04-2021)
  • Page 119 QUICK SETTIN 1. Quick Settings for Keyboard Wedge Mode Program Reset PC/AT 2. Quick Settings for RS 232 Mode Program Reset RS-232C 3. Quick Settings for German Language Keyboard Program German Keyboard Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...

  • Page 120: Maintenance

    7. Washer needle 8. Sleeve DBL 408 or LBBR4 9. Novoprene tube 2.5 x 1 for Sr 10/30 10. Novoprene tube 4.1 x 1.6 for Sr 10/50 11. Tuva tube 1.5 x 3 CHORUS TRIO EXPANDER SERVICE MANUAL Rev. 1.0 (04-2021)

  • Page 121: Wash Well For The Dispenser Needles

    The maintenance for each device will be described in the following paragraphs. 10.3.3 Wash well for the dispenser needles Dirt accumulates in the flat area around the slit from which the well is accessed, above and inside the well itself (see Fig. 10-24) Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...
  • Page 122 Fig. 10-24 Dry and reassemble all the parts of the well, making sure that the teflon gaskets have been replaced. Before remounting it on the platform, clean it. Fig. 10-25 CHORUS TRIO EXPANDER SERVICE MANUAL Rev. 1.0 (04-2021)

  • Page 123: Dispensers #1 And #2

    Disassemble the plate guide, being careful that the carriage does not come off, ▪ then clean and lubricate it; Check that the belt is not worn, otherwise replace it; ▪ Clean the platform before remounting everything. ▪ Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...

  • Page 124: Washers 21 - 25 - 28

    Check the spherical slide couplings of the needles. Replace if worn or ▪ encrusted. After the platform has been cleaned, the units can be remounted. Fig. 10-29 Washer dirtiness Fig. 10-30 Washers #1 and #2 CHORUS TRIO EXPANDER SERVICE MANUAL Rev. 1.0 (04-2021)

  • Page 125: Optical Unit

    Using a cloth, delicately clean the lenses, being careful not to scratch them. Warning: when the lenses are remounted, their convexity direction must be respected. Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...
  • Page 126 Light emitter Fig. 10-32 Positioning of the Receivers As mentioned previously, the receivers are mounted below the lower platform. The figure below shows their layout Fig. 10-33 CHORUS TRIO EXPANDER SERVICE MANUAL Rev. 1.0 (04-2021)

  • Page 127: Washer Wells

    Clean the sensor contacts, removing any incrustations on the contacts and in ▪ the body of the well; Check the conductivity of the sensors; ▪ Make sure that the platform is clean before repositioning them. ▪ Fig. 10-35 Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...

  • Page 128: Upper Plate

    Disassemble the heads, leaving the pump in its place; ▪ Remove and clean the plastic residues on the rollers and on the internal walls ▪ of the head; Replace the tube; ▪ Remount the head. ▪ CHORUS TRIO EXPANDER SERVICE MANUAL Rev. 1.0 (04-2021)

  • Page 129: Diaphragm Pump

    Disassemble the waste well unit by removing the two screws holding it to the ▪ instrument’s frame; Remove the syringe unit (Fig. 10-41Fig. 10-39) from the bracket. ▪ Fig. 10-39 Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...

  • Page 130: Hydraulic Unit

    Clean the syringe feed screw with WD40 and lubricate with silicone oil; ▪ Check the tightness of the screws, especially those for the joint; ▪ Reposition the syringe on the cross beam (Fig. 10-41) and remount everything ▪ on the instrument’s frame. CHORUS TRIO EXPANDER SERVICE MANUAL Rev. 1.0 (04-2021)

  • Page 131: Rotation

    (i.e. incrustations and rust). For incrustations on the sensors, clean them with disinfecting/cleaning liquid. In case of rust, clean with WD40 and disinfecting/cleaning liquid and/or replace the probe. Check the conductivity of the sensors. Rev. 1.0 (04-2021) CHORUS TRIO EXPANDER SERVICE MANUAL...

  • Page 132: Tubing

    Check the hydraulic piping. 10.3.20 Tubing This check pertains to all the tubes in the instrument. Replace any tube that has mould or other residues. CHORUS TRIO EXPANDER SERVICE MANUAL Rev. 1.0 (04-2021)

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