Huntleigh BABY DOPPLEX 4000 Service Manual
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Huntleigh BABY DOPPLEX 4000 Service Manual

Huntleigh BABY DOPPLEX 4000 Service Manual

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BABY DOPPLEX 4000 ® , BABY DOPPLEX 4002 ®
CUSTOMER SUPPORT DOCUMENTATION
E-mail: service@huntleigh-diagnostics.co.uk
The information contained in this publication may not be used for any purpose other than that for which it was originally supplied.
The publication may not be reproduced in part or in whole without written consent.
Huntleigh Diagnostics Ltd products are subject to continuous development and consequently may incorporate minor changes from
the information contained in this manual.
The equipment and its accessories must be used strictly in accordance with the procedures detailed in this manual. The
manufacturer and its subsidiaries cannot accept any liability for loss or any indirect or consequential damages resulting from
misuse of, or modification to, the equipment or from operator negligence.
®Dopplex and 'H' logo are registered trade marks of Huntleigh Technology PLC
©Huntleigh Technology PLC 2000
SERVICE MANUAL
Part number 614365
Issue 2, January 2000
Huntleigh Diagnostics Ltd
Service Dept
35 Portmanmoor Road
Cardiff UK. CF24 5HN
Tel: (029)20496793 (24 hrs)
Fax: (029)20492520

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Summary of Contents for Huntleigh BABY DOPPLEX 4000

  • Page 1 The information contained in this publication may not be used for any purpose other than that for which it was originally supplied. The publication may not be reproduced in part or in whole without written consent. Huntleigh Diagnostics Ltd products are subject to continuous development and consequently may incorporate minor changes from the information contained in this manual.

  • Page 2: Table Of Contents

    614365 Table of Contents 1 General Information ......1 1.1 Introduction ......1 1.2 Servicing Policy .
  • Page 3 614365 6.4 BD4000 Printer Section ......21 ..... 22 6.5 BD4000 Rear Panel Section 6.6 BD4000 Front Panel PCB.
  • Page 4 614365 10.17 Mains Inlet Removal ......44 10.18 Mains Inlet Refitting ......44 10.19 Speaker Removal .
  • Page 5 614365 Appendix A 15.1 ......72 15.2 Appendix B ......73 Issue: 2 Draft Rev: a...

  • Page 6: General Information

    Product Description General The Baby Dopplex 4000 and Baby Dopplex 4002 comprise a main unit (which can be either free-standing, trolley or wall-mounted), two transducers (US* and Toco). A patient event marker and a FECG legplate (optional). *BD4002 is supplied with 2 US transducers.

  • Page 7: Antistatic Handling, Electro Static Discharge (Esd)

    614365 Transducers The transducer connectors are colour coded to indicate function: the US/FECG connector is red, the Toco connector is blue. The transducers are held in place by elasticated straps. Patient Event Marker This is a hand-held push-button which is pressed by the patient when she feels fetal or uterine activity.

  • Page 8: Safety Aspects

    614365 Safety Aspects Safety The Baby Dopplex and its transducers are designed to high standards of performance, reliability and safety. Functional and safety checks should always be made after carrying out any repairs or dismantling the equipment. It is recommended that regular inspections are to be made to check the integrity of the unit, and to ensure cables are not showing any signs of wear or noise when flexed.

  • Page 9: Fecg Testing

    Caution Do not apply test voltages to main unit FECG input socket directly If you require any assistance with safety testing your Huntleigh Diagnostics equipment, contact Huntleigh Diagnostics. For the U.K. refer to the Health Equipment Information Document No 95 – Code Of Practice For Acceptance Testing Of Medical Equipment.

  • Page 10: Cleaning

    614365 Cleaning Caution Switch the unit off and disconnect from the mains before cleaning Main Unit If required, this can be wiped with a soft cloth dampened with a mild detergent, avoiding the connectors. Do not allow any fluid to seep into the connectors. Do not allow any fluid to seep into the unit.

  • Page 11: Preventative Maintenance

    614365 Preventative Maintenance The Huntleigh Diagnostics Baby Dopplex 4000 and Baby Dopplex 4002 are designed for a minimum amount of maintenance. To support the high standard of performance and safety, the safety and functional checks should be carried out as part of a regular maintenance routine.

  • Page 12: Bd4000, Bd4002 Main Unit

    The Baby Dopplex displays will illuminate and you will hear a click from the loudspeaker. The message “Huntleigh Diagnostics” appears for an instant while the unit carries out a self-test. Inspect the transducer cables and plugs for signs of damage and physical condition of the transducers.

  • Page 13: Toco

    614365 The signal quality will vary during this test and can be observed in the top right hand corner of the LCD display. The four bands are illuminated for a good signal and progressively extinguish as the signal deteriorates. Repeat for FHR1 and FHR2 inputs using front panel to select audio channel (BD4002 only).

  • Page 14: Fecg Functional Testing

    614365 Remove the weight after 30 seconds check for return to zero and turn the printer off, the printer should fast feed a blank section. Compare the printout with the examples shown above, checking for print quality, date/time stamp, event markers, ultrasound, toco trace and mode (i.e. US/FECG). FECG Functional Testing Reconnect the FECG legplate.
  • Page 15 614365 150mm paper(normal) 210mm paper(wide) Issue: 2 Draft Rev: a...

  • Page 16: Twins Functional Testing - Bd4002

    614365 Twins Functional Testing - BD4002 Fit both US transducers and toco transducer and test as detailed in section 3.2. Only one FECG transducer can be used at any one time and should be tested as detailed in section 3.4. When full width paper(210mm) is loaded, the unit will print two FHR grids one above the other and one toco trace.
  • Page 17 614365 Specification General Product Name: Baby Dopplex 4000/Baby Dopplex 4002 Model No: BD4000/BD4002 Physical Size - control unit: 93mm x 380mm x 250mm (HxWxD) Weight: 4.5Kg Environmental Operating Temperature: C to +30 Storage Temperature: C to +40 Electrical Power Supply:100-250V a.c. 50/60Hz...
  • Page 18 614365 EN60601-1 Classification: Type of shock protection - Class I Degree of shock protection - Type B Leg Plate & IUP Module Type BF Protection Against Ordinary equipment Water Ingress Degree of Safety in PresenceNot suitable for use in the presence of of Flammable Gases: flammable gases.

  • Page 19: Technical Description

    614365 Technical Description The Doppler Principle The Baby Dopplex uses the Doppler principle for non-invasively monitoring movement within the body. The Doppler principle states that if a signal is transmitted at a fixed frequency and is reflected by a moving body, the frequency of the received signal will be shifted. An increase in frequency results if the reflector is moving towards the transmitter/receiver, and a decrease results if moving away from the transmitter/receiver.

  • Page 20: Heart Rate Processing

    614365 Heart Rate Processing The Doppler audio signal is amplified and filtered. It's amplitude is then regulated after passing through a low-pass anti-aliasing filter. The signal is then sampled by the microcontroller in order to calculate the fetal heart rate. Fetal Movement Detection (FMD) The BD4000 and BD4002 will annotate the fetal heart trace towards the top of the contraction channel when a fetal movement is detected.

  • Page 21: Bd4000 Overview

    614365 BD4000 overview The BD4000 has been split up into several sections as shown below for clarity. Issue: 2 Draft Rev: a...

  • Page 22: Bd4000 Micro Section

    614365 BD4000 Micro Section Real Time Clock, this enables the micro to display and print the date/time on the trace. User setup information is held within the internal memory of the clock. Watchdog Timer, this monitors the micro and checks for any system errors. Upon detecting a system error the micro is reset.
  • Page 23 614365 DSP Bootup, this circuitry loads the DSP program from EPROM to the DSP’s internal RAM when the unit is reset. EEPROM, used for storage of user setup information when the unit is switched off. Twins Detect, a link in the cable sets the monitor to twins mode. Issue: 2 Draft Rev: a...

  • Page 24: Bd4000 Analogue Section

    614365 BD4000 Analogue Section Power Amplifier Gain Volume Control Control Micro- Anti Alias Band Pass Differential US/FECG controller Filter Filter Amplifier Input Low Pass FECG Filter Low Pass Filter FECG Wideband Transducer Type Detect 1.5MHz Serial Ports Amplifier Timing SYNC/Gate Logic SYNC/ Gate...
  • Page 25 614365 Transducer Type Detect, is used to differentiate between ultrasound and FECG modes. A probe code circuit detects the connection of an ultrasound transducer and signals this to the micro. The micro then opens or closes the relevant analogue switches depending on the mode selected, to route the appropriate signals through to the A/D converters.

  • Page 26: Bd4000 Power Supply Section

    614365 BD4000 Power Supply Section Universal Switch Mode PSU, converts standard international mains power down to +5 and +/-12Vdc. Boost Regulator, situated on the main board, this converts the +12V to +26V for use by the print head and stepper motor. Low Noise Regulator, a low noise +/- 10V is also produced to power the ultrasound transducer, anti aliasing filter and automatic gain control circuitry.

  • Page 27: Bd4000 Printer Section

    614365 BD4000 Printer Section Print Head, is a solid state thermal array of heater elements that print onto thermally sensitive paper. Strobe Control, the strobe control varies the strobe width to the print head, which regulates the intensity of the printout. The strobe width is controlled by the microprocessor.

  • Page 28: Bd4000 Rear Panel Section

    614365 BD4000 Rear Panel Section Twins Detect RS232 Carrier In SYNC/Gate In RS232 Carrier Out SYNC/Gate Out DUART, Dual Universal Asynchronous Receive Transmit, controls the data flow to and from the microprocessor and converts it into a protocol accepted by the RS232 IC. Level Converter, this converts the data from the DUART into RS232 voltage levels.
  • Page 29 614365 BD4000 Display PCB Interface Connector, is the connector from the main PCB. LCD Controller, processes the information from the data bus and converts this to a form acceptable to the LCD. LCD Driver, further processes the information from the LCD Controller and data bus for the Display.

  • Page 30: Bd4002 Overview

    614365 BD4002 overview The BD4002 has been split up into several sections as shown below for clarity. Issue: 2 DRAFT Rev: a...

  • Page 31: Bd4002 Micro Section

    614365 BD4002 Micro Section Real Time Clock, this enables the micro to display the date/time on the trace and front panel. User setup information is held within internal memory of the clock. Watchdog Timer, this monitors the micro and checks for any system errors. Upon detecting a system error the micro is reset.

  • Page 32: Bd4002 Analogue Section

    614365 BD4002 Analogue Section Anti Alias Band Pass Differential Filter Filter Amplifier Power FECG Amplifier Low Pass Filter Volume Control Low Pass Filter FECG Wideband Gain Control Micro- controller Anti Alias Band Pass Differential US/FECG Filter Filter Amplifier Inputs FECG Low Pass Filter Low Pass...
  • Page 33 614365 Transducer Type Detect, is used to differentiate between ultrasound and FECG modes. A probe code circuit detects the connection of an ultrasound transducer and signals this to the micro. The micro then opens or closes the relevant analogue switches depending on the mode selected, to route the appropriate signals through to the A/D converters.

  • Page 34: Bd4002 Power Supply Section

    614365 BD4002 Power Supply Section Universal Switch Mode PSU, converts standard international mains power down to +5 and +/-12Vdc. Boost Regulator, situated on the main board, this converts the +12V to +26V for use by the print head and stepper motor. Low Noise Regulator, a low noise +/- 10V is also produced to power the ultrasound transducers.

  • Page 35: Bd4002 Printer Section

    614365 BD4002 Printer Section Print Head, is a solid state thermal array of heater elements that print onto thermally sensitive paper. Strobe Control, the strobe control varies the strobe width to the print head, which regulates the intensity of the printout. The strobe width is controlled by the microprocessor.

  • Page 36: Bd4002 Rear Panel Section

    614365 BD4002 Rear Panel Section RS232 RS232 DUART, Dual Universal Asynchronous Receive Transmit, controls the data flow to and from the microprocessor and converts it into a protocol accepted by the RS232 IC. Level Converter, this converts the data from the DUART into RS232 voltage levels. The RS232 link allows data to be passed from and to an external device via the rear panel D-type connectors.
  • Page 37 614365 BD4002 Display PCB Interface Connector, is the connector from the main PCB. LCD Controller, processes the information from the data bus and converts this to a form acceptable to the LCD. LCD Driver, further processes the information from the LCD Controller and data bus for the Display.

  • Page 38: Bd4000/Bd4002 Transducers

    614365 BD4000/BD4002 Transducers US1 Ultrasound Transducer Timing Logic, is driven by the control and carrier signals fed from the main unit. This logic controls the transmitter and receiver range gating. 5V Regulator, the 5V regulator is supplied from the +10V line. Range Gate Control, is used to reject any unwanted signal caused by reflections and contact noise.

  • Page 39: Fecg Leg Plate

    614365 FECG Leg Plate ± Patient Connections, these follow the standard three node connection pattern commonly used in FECG monitoring. Instrumentation Amplifier, this is used to amplify the FECG signal. An instrumentation amplifier is used as it is very important that this stage has a very high common mode rejection ratio due to the small FECG signal that is presented with large common mode noise and maternal signals.
  • Page 40 614365 IUP Module Tracking Power Regulator Supply 2.5v Reference Differential Opto- Amplifier Amplifier Driver Outputs Coupler Isolation Power Supply, provides an isolated supply to the ampifier and electronics in the patient connected part of the IUP system for patient safety. 2.5V Reference, is used to power the opto isolator.

  • Page 41: Electrostatic Discharge (Esd) Precautions

    614365 Electrostatic Discharge (ESD) Precautions What is Static Electricity? Static electricity is generated when two materials move against one another. The voltage generated depends on the materials generating the electricity, the speed of movement, humidity and rate of discharge. All man made materials generate static, such as plastic coffee cups, plastic bags, binders and folders, all of which are likely to be within the working area.

  • Page 42: Servicing Procedures - Main Unit

    614365 10 Servicing Procedures - Main Unit Due to the complexity of the product and the use of surface mount technology, the electronic circuitry is not serviceable without specialised training and equipment. The repairs detailed in this manual are therefore limited to replacement of certain parts. Fault finding is limited to checking for the presence or absence of signals around suspect components using an oscilloscope or multimeter.

  • Page 43: Unit Dismantling

    614365 10.2 Unit Dismantling Caution: Ensure that mains supply is removed before opening unit Fig 5 Case Screw Removal Invert unit on a smooth surface and remove 5 case securing screws. Turn unit over and carefully raise the top case half. Unplug front panel ribbon cable and place case half to one side, avoiding strain to the earth wire.

  • Page 44: Display Pcb Metalwork Removal

    614365 Fig 6 Front Panel Removal 10.6 Display PCB Metalwork Removal Remove Display PCBs as detailed in 7.4. Remove nylon washers and spacers from pillars. Remove remaining 4 retaining nuts and metal washers from metalwork. The front panel metalwork can now be pushed through case moulding cut-out and the label removed.

  • Page 45: Main Pcb Removal

    614365 10.8 Main PCB Removal Remove print head connector, taking care not to short pins together. Remove all connectors as shown in fig 12 below. Remove 4 nuts and washers at each corner of PCB. 10.9 Main PCB Refitting Place PCB over pillars, fit washers and nuts as above. Torque retaining nuts to 20cNm and fit shakeproof washer under earthing point nut.

  • Page 46: Print Head Refitting

    614365 10.11Print Head Refitting Fit print head connector, head mounting plate and tighten 6 screws to 35cNm. Ensure that print head is parallel to head mounting plate. Place spacers over pillars and springs over spacers. Place head support plate over head mounting plate ensuring that metal tongue is located under screw head as fig 13.

  • Page 47: Stepper Motor Removal

    614365 Start unit printing at 3cm/minute and slide print head towards case rear until print density is acceptable. Refer to 8.4 for setup test pattern. Remove mains supply and tighten head support plate screws to 35cNm. 10.13Stepper Motor Removal Disconnect stepper motor connector. Remove print head assembly as detailed in 7.10 and cable ties to printhead securing plate.

  • Page 48: Power Supply Removal

    614365 10.15Power Supply Removal Caution: Ensure that mains supply is disconnected before removing Power Supply Board Remove power supply connectors noting orientation and connector types. Remove 4 retaining nuts and washers. Lift Power Supply Unit clear from assembly. 10.16Power Supply Refitting Refitting is reversal of removal, ensure that the PSU base insulator is fitted with largest hole at the rear left hand side of the power supply.

  • Page 49: Speaker Removal

    614365 10.19Speaker Removal Remove speaker connector from rear panel PCB. Remove 2 Speaker bracket securing screws, lift speaker assembly and earth wire clear of unit. Remove 4 speaker securing screws nuts and clamp plates. 10.20 Speaker Refitting Refitting is reversal of removal, tighten screws and nuts to 35cNm. 10.21Rear Panel Connector PCB Removal Remove rear panel ribbon cable from main PCB.

  • Page 50: Paper Tray Open Microswitch Removal

    614365 10.23Paper Tray Open Microswitch Removal Remove microswitch connector and power supply as detailed in 7.15. Remove microswich and plate securing screws. Removing one screw at a time will prevent the securing plate from dropping under the chassis. Lift microswitch clear of assembly and clean chassis of sealant. 10.24 Paper Tray Open Microswitch Refitting Place microswitch over securing plate and fit screws loosely.

  • Page 51: Paper Tray Refitting

    614365 Lift print head assembly and chassis from inside paper tray. Pull paper tray forward clear of assembly. 10.26Paper Tray Refitting Lift print head assembly and chassis. Insert paper tray ensuring that the paper tray is located within the base tray guide. Carefully refit chassis screws and tighten to 60cNm, seal with M-Coat-D.

  • Page 52: Front Panel Connector Assembly Refitting

    Fit transducer top and tighten screws to 20 cNm. Replace label. Water resistance of US transducers can only be ensured if the units are returned to Huntleigh Diagnostics for refurbishment. 10.33Strain Gauge Assembly Removal Remove case top as detailed in 10.31 and desolder grey cable from termination PCB.

  • Page 53: Toco Transducer Alignment

    614365 10.35Toco Transducer Alignment Equipment required Power Supply b) Digital Volt Meter Weight - 1 x 100gm Remove case top as detailed in 10.31. Set up power supply voltage to 5.00Vd.c. +/-0.05V. Pin No Connection 5V Supply +Ve O/P -Ve O/p View from rear of socket Connect transducer to power supply and DVM as shown in table above.
  • Page 54 614365 Apply power to strain gauge and allow 1 minute to settle. Use a toco socket connected as shown above to supply strain gauge and read values. DVM should read zero +13 to +23mV. If offset positive, check that link `A' is cut and link `B' intact. Replace `Zero' resistor with new value as required to bring the offset within specification.

  • Page 55: Replacing Transducer Cable

    Apply threadlock to plug body and tighten assembly. Water resistance of US transducers can only be ensured if the units are returned to Huntleigh Diagnostics for refurbishment. Solder wires to PCB as per Fig 17/18. Assemble the transducer as detailed in 10.32.

  • Page 56: Fecg Transducer Servicing

    There are no serviceable parts within the US transducer and repairs are limited to the replacement of the cable. 10.37FECG Transducer Servicing Contact Huntleigh Diagnostics Service Department for further information on servicing the FECG transducer. Issue: 2 DRAFT Rev: a...
  • Page 57 614365 11 Fault Finding In the event of the BD4000/BD4002 developing a fault, the following checklist should be followed. Symptom Possible Cause - check Unit dead Fuses in mains inlet blown or PSU Fault codes on printout - see section 11.1 No outputs from PSU No Audio Volume level low...

  • Page 58: Error Codes

    614365 11.1 Error Codes Under certain fault conditions the BD4000 will print error codes relating to faults within certain sections of the circuitry. When an error is detected and is first switched on, a printout will automatically be generated as shown below. The unit will then ‘shut down.’ Line Description Comment...

  • Page 59: Service Notes

    614365 11.2 Service Notes References to servicing information can be stored within the BD4000's memory. This can be changed as shown below: Front Panel Button Layout 11.3 Displaying Status Turn unit on and press menu key, then button 1. b) Press the printer button. The setup information shown on previous page is then printed.

  • Page 60: Print Head Test

    A series of narrow stripes can be printed, this can be used as an aid to print head alignment, this can be accessed as detailed in 8.3 steps a-f above. 11.5 Bed number During normal operation the bed number is printed alongside the Huntleigh Diagnostics footnote. This can be changed as detailed in 8.3.

  • Page 61: Spare Parts List

    614365 12 Spare Parts List The following spare parts can be ordered from your dealer, or direct from Huntleigh Diagnostics using the part numbers shown overleaf: 12.1 Recommended Spare Parts Recommended spare parts are marked with a bold part number.
  • Page 62 614365 Ref. BD4000 Part BD4002 Part Description 614384 DISPLAY PCB 614385 614385 TOP COVER MOULDING M3-NUT M3-NUT M3 NUT M3-WASHER M3-WASHER M3 WASHER M3-WASHER-N M3-WASHER-N M3 WASHER - NYLON 614386 DISPLAY PANEL LABEL 614387 REAR PANEL LABEL 614389 DISPLAY PANEL METALWORK BS-7.5-32 BS-7.5-32...
  • Page 63 Tel +44 (0)1222 485885 0088 Fax +44 (0)1222 492520 geprufte sicherheit MADE IN UK Huntleigh Diagnostics Ltd - A Huntleigh Technology PLC Company Dopplex, Huntleigh and `H" logo are registered trademarks of Huntleigh Technology PLC. Ref. BD4000 Part BD4002 Part Description 614390 614390...
  • Page 64 614365 Ref. Part Number Description 614392 PAPER TRAY ASSY 614390 BASE MOULDING 614393 CHASSIS ASSEMBLY 614394 PRINTER MOTOR ASSY 614395 END OF PAPER ASSY WN1412-KB30-8 SELF TAPPING SCREW M3-WASHER-S M3 WASHER SHAKEPROOF M3X8-POZI-PAN M3X8 SCREW M3-WASHER-S M3 WASHER SHAKEPROOF BP190 FOAM PAD Issue: 2 DRAFT Rev: a...
  • Page 65 614365 Ref. BD4000 Part BD4002 Part Description 614396 REAR CONNECTOR PCB ASSY 614397 CONNECTOR PANEL ASSY 614419 614419 PRINT HEAD ASSY 100 614420 614420 PAPER WIDTH MICROSWITCH ASSY 105 614421 614421 SPEAKER ASSY 130 WN1412-KB30-10 WN1412-KB30-10 SELF TAPPING SCREW 160 M3X8-POZI-PAN M3X8-POZI-PAN M3X8 POZIPAN 165 M3-WASHER-S...
  • Page 66 614365 Ref. BD4000 Part BD4002 Description 614425 MAIN PCB ASSY 110 614433 614433 SWITCH MODE PSU 165 M3-WASHER-S M3-WASHER-S M3 WASHER SHAKEPROOF 175 M3-NYLOC M3-NYLOC M3 NUT 180 BS-06-32 BS-06-32 BRASS SPACER 181 NS-06-32 NS-06-32 NYLON SPACER 185 M3-WASHER-N M3-WASHER-N M3 WASHER 195 BS-04-32 BS-04-32...
  • Page 67 614365 Ref. Part Number Description WN1412-KB30-8 POZI PAN SCREW M3-WASHER-S M3 WASHER SHAKEPROOF M3-NYLOC M3 NUT 543-428 CABLE TIE MB2A CABLE TIE BASE 13X13 MB3A CABLE TIE BASE 19X19 504-978 EARTH LABEL Issue: 2 Draft Rev: a...
  • Page 68 614365 Ref. Part Number Description 614427 MOTOR MOUNTING PLATE M3X6-POZI-PAN M3 SCREW M3-WASHER-S M3 WASHER SHAKEPROOF 614432 STEPPER MOTOR 614428 MOTOR SUPPORT PLATE M3X8-POZI-PAN M3 SCREW Issue: 2 DRAFT Rev: a...
  • Page 69 614365 BD4000 Part BD4002 Part Description FK20 FK20 EVENT MARKER SOCKET 614429 CONNECTOR PANEL EARTH KIT 10 614430 CONNECTOR PANEL METALWORK 20 614431 CONNECTOR PANEL LABEL 30 EGG1B305-CNL EGG1B305-CNL TOCO SOCKET 40 EGG1B307-CNL EGG1B307-CNL ULTRASOUND SOCKET 250 GCA-1S-255-LT GCA-1S-255-LT EARTH WASHER 260 GEA-1S-240-LN GEA-1S-240-LN BACK NUT...
  • Page 70 614365 Part Number Description 614398 SPEAKER WIRE - PREPARED 614399 SPEAKER 397-792 SLEEVING 614400 SPEAKER CLAMP PLATE 614401 SPEAKER MOUNT PLATE M3-NYLOC M3 NUT M3-WASHER M3 WASHER Issue: 2 DRAFT Rev: a...
  • Page 71 614365 Part Number* Part Number** Description 20 614404 US1 TDR CABLE ASSY 40 614402 US1 TRANSDUCER TOP 50 614408 614408 US1 BUTTON RED 60 614405 614405 US1 SERIAL NO LABEL 70 614407 614407 US1 TDR LABEL 80 M2.5X6-POZI-PAN M2.5X6-POZI-PAN POZIPAN SCREW 90 M2.5-WASHER-S M2.5-WASHER M2.5 WASHER SHAKE...
  • Page 72 614365 Part Number* Part Number** Description 614415 TOCO TDR TOP 614409 TOCO TDR BASE 614410 614410 TOCO BUTTON BLUE 614412 TOCO CABLE ASSY M2.5-WASHER-S M2.5-WASHER-S M2.5 WASHER SHAKE M2.5X8-POZI-PAN M2.5X8-POZI-PAN M2.5 POZI PAN WN1412-KB22-8 WN1412-KB22-8 SELF TAP SCREW 1211 1211 BOOT 100 1208 1208...
  • Page 73 614365 13 Warranty And Service Huntleigh Diagnostics' standard terms and conditions apply to all sales. A copy is available on request. These contain full details of warranty terms and do not limit the statutory rights of the customer. In the unlikely event that you need to return this product, please adopt local decontamination procedures and provide documentation which outlines the product's status.

  • Page 74: Overseas Offices

    Fax: 00168 9309 4582 ® Dopplex is a registered trade mark of Huntleigh Technology PLC in the UK. As part of the ongoing development programme the company reserves the right to modify specifications and materials of the Baby Dopplex without notice.

  • Page 75: Appendices

    (typically 0.8mm(1/32")) earth bonded. e.g.Weller EC3100D-ESP. Solder: SN62 type solder with multi cored flux type RA conforming to QQ-S-571e (US federal specification). e.g. Multicore 'smart wire'. If further information is required, please contact Huntleigh Diagnostics. Issue: 2 Draft Rev: a...
  • Page 76 614365 15.2 Appendix B Torque Settings cNm Display Panel Metalwork to case Display PCB Print Head Mounting Plate Print Head Support - Nuts Print Head Support - Screws Stepper Motor to Bracket Stepper Motor Bracket to Base Main PCB Chassis Speaker Bracket Screws Speaker Bracket Nuts Rear Panel PCB...

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