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Minelab F3 COMPACT Metal Mine Service Manual

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F3 COMPACT Metal Mine
F3 Metal Mine Detector
Detector
Version 1: January 2012
Part No: 4904-0005

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Summary of Contents for Minelab F3 COMPACT Metal Mine

  • Page 1 F3 COMPACT Metal Mine F3 Metal Mine Detector Detector Version 1: January 2012 Part No: 4904-0005...

  • Page 2: Table Of Contents

    F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ Contents Introduction ............................ 3 Mechanical & Functional Testing ..................... 4 Disassembly & Reassembly Procedures ..................13 Opening the Detector Body ....................14 Closing the Detector Body ...................... 17 Main Printed Circuit Board (PCB) .................... 23 3.3.1 Removing the Main PCB ....................

  • Page 3: Introduction

    Line replaceable units are components or sub assemblies of the F3 COMPACT that can be purchased from Minelab for the purpose of repairing the F3 COMPACT. Line replaceable units include the following: 3004-0044...

  • Page 4: Mechanical & Functional Testing

    F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ 2. Mechanical & Functional Testing The detector set should be regularly checked to ensure all parts and accessories are present and in good working order. The F3 COMPACT is supplied as a mine detecting set comprising: F3 COMPACT Detector 4901-0103 Operations Manual...

  • Page 5: Mechanical Testing

    F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ 2.1 Mechanical Testing Confirm all parts and accessories are present and in good working order. Unpack the detector and prepare for use. Figure 2 identifies the major components of the F3 COMPACT. Mechanical testing and inspection includes checking: the detector for any obvious signs of damage, •...

  • Page 6: Functional Testing

    F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ 2.2 Functional Testing Functional testing is used to confirm the serviceability of an F3 COMPACT before it is returned to the field for use and whenever doubt exists about its serviceability. The F3 COMPACT must pass all tests to be considered serviceable and ready for use. Whenever a line replaceable unit is replaced or a repair is conducted, all functional testing must be completed.
  • Page 7 F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ Figure 4: Noise Cancel Note The coil should not be moved nor should metallic objects be brought near the coil during this procedure. If functioning correctly, the noise cancelling procedure will commence with two single •...
  • Page 8 F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ Figure 5: Audio Reset Within two seconds the threshold tone should return to its correct level • Ground Balance Test. This test confirms the F3 COMPACT is capable of ground balancing against mineralised ground. In doing so, it confirms the correct operation of the ground balance button, coil and associated circuitry.
  • Page 9 F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ Confirm the ground balance is correct by moving the ground balance test piece from • approximately 150mm (6in) above the coil towards the centre of the coil. If there is no alarm from the ground balance test piece the ground balance procedure is functional. Note Where the ground balance test is conducted using local soil Figure 6 illustrates the procedure to be followed.
  • Page 10 F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ Figure 7: Connecting the Earset LED Test. This test confirms the visual indicator (lights) can be enabled and operate correctly. To conduct the test: Turn on the detector. • Pass the coil over a metal object and check no LEDs are turned on. •...
  • Page 11 F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ Note Maximum sensitivity is only available 30 seconds after the threshold tone is heard. Do not test the F3 COMPACT with the test piece until 30 seconds after the threshold tone is heard. Hold the test piece above the middle of the coil with the rounded end (containing •...
  • Page 12 F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ Rotate the sensitivity knob clockwise to position 6 and confirm that a single high pitched • beep is heard. Conduct the test piece test and confirm that a louder audio response and an increased • number of LEDs are illuminated when compared to the previous position 4 or 2.

  • Page 13: Disassembly & Reassembly Procedures

    F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ 3. Disassembly & Reassembly Procedures This section describes the procedures required to exchange line replaceable units. Whenever a unit is replaced, mechanical and functional testing as described in Section 2 must be completed. It is recommended that the 3004-0055 F3 COMPACT service tool kit be used to conduct disassembly and reassembly procedures.

  • Page 14: Opening The Detector Body

    F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ 3.1 Opening the Detector Body In order to conduct repairs and replace many of the parts of this detector, the first step will often be to open the detector body. Many sections of this manual will refer back to this section.
  • Page 15 F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ Figure 11: Disconnecting Coil Plug and Removing Screws Turn the detector over onto its left side with speaker grill uppermost. • Using the 3mm hex key driver, remove all eight screws from the detector body. •...
  • Page 16 F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ Using fingers gently separate the left and right body halves. The battery end of the • detector will come away easily. The shaft end is held by two locating pins and will require more force to separate. Gently lift the right side off the left body half taking care not to pull or stretch the speaker •...

  • Page 17: Closing The Detector Body

    F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ Figure 16: Open Detector Body The body of the detector is now opened revealing the internal components which can now be replaced as required. 3.2 Closing the Detector Body The following procedure outlines the steps involved in closing and resealing the detector body: Ensure all parts are present, in good working order and lay the detector body on its left •...
  • Page 18 F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ Fit the coil cable into the cable router and check that the loop of coil cable within the • shaft hinge is positioned so that it will not be trapped when the detector body is closed. Refer to Figure 21.
  • Page 19 F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ Note The hinge cover holds the latch hinge and spring latch hinge in place. When the hinge cover is removed the spring may unintentionally disconnect from the latch. Ensure the battery lid is closed. • Connect the speaker connector to the PCB connector.
  • Page 20 F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ Ease the two halves of the detector together. Align the detector body right side with the • locating pins either side of the shaft hinge. Check the latch hinge and spring latch hinge are in place and connected. •...
  • Page 21 F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ Figure 23: Fitting Four Screws Identify the four Torx screws and check they all have O-rings fitted. Insert the four Torx • screws into the right side of the detector. The Torx screw positions have a Torx symbol next to their screw holes.
  • Page 22 F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ Note Do not move the detector with the hinge cover removed as this may result in the spring latch hinge and the latch hinge becoming disengaged. Confirm coil connector is tight and check the coil cable and the wiring loom are located •...

  • Page 23: Main Printed Circuit Board (Pcb)

    PCB is required this part number should be ordered. Note Repairs to and disassembly of the main PCB are not detailed in this manual. Repairs to the main PCB should only be conducted by authorised Minelab Engineers. Toroid Screw Battery Connector...

  • Page 24: Removing The Main Pcb

    F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ 67-50104 31-23040-980 4311-0080 0703-0208 0704-0009 67-50062 4005-0054 Figure 30: Parts of the Main PCB 3004-0053 Main PCB Kit, contains all parts in this table. 0703-0208 Cover Toroid 0704-0009 Gasket Toroid 31-23040-980 Screw Toroid M3x40 skt 4005-0054 Spacer Toroid mid 4311-0080...
  • Page 25 F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ Figure 32: Removing the Coil Connector Nut (18mm) Unscrew the screw toroid from the main PCB, using a 2.5mm hex key driver. • Disconnect the battery connector from the main PCB. • Screw Toroid Battery Connector Figure 33: Screw Toroid &...
  • Page 26 F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ Slide out the locking bails on the six way ribbon connector and disconnect the cable six • way ribbon. 10 way Connector Cable Six Way Ribbon Figure 35: 10 Way Connector and Six Way Ribbon Cable Slide the main PCB away from the battery assembly until the ends of the main PCB •...

  • Page 27: Main Pcb Assembly

    _______________________________________________________________________________________________________________________ 3.3.2 Main PCB Assembly When the line replaceable unit 3004-0053 Main PCB Kit is supplied by Minelab no assembly is required. However, in the event a main PCB is salvaged from one detector for use in another, it is important to check for correct assembly before fitting the main PCB to the detector.

  • Page 28: Installing The Main Pcb

    F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ Figure 39: Three Jumpers on Main PCB The main PCB is now ready to install into the detector. 3.3.3 Installing the Main PCB. Having opened the detector body and removed the faulty main PCB, install a serviceable main PCB as follows: Place the detector on its left side in a clean well lit area.
  • Page 29 F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ Cable of Coil Connector fitted into Cable Router O-Ring in place on Coil Connector Figure 41: Coil Connector Figure 42: Screw Toroid Fit the screw toroid as shown in Figure 42. • Lay the cable 10 way under the interface PCB. Take note of the connector key tab that •...
  • Page 30 F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ Align the cable six way ribbon with its connector. Slide the connector locking bail • outwards to accept the cable six way ribbon. Insert the cable six way ribbon into the connector then push the locking bail to secure. •...

  • Page 31: Coil

    F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ Fit the nut (18mm) to the coil connector and tighten. • Finish assembling the detector by closing the detector body, as described in Section 3.2 – Closing the Detector Body 3.4 Coil The coil is a line replaceable unit and Figure 47 illustrates the major parts of the coil. 3004-0044 Coil Kit, is a service kit containing the coil and associated parts.

  • Page 32: Skid Plate Replacement

    F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ 4308-0030 Pin Coil Pivot 4308-0031 Pin Coil Cable Table 2: Coil Parts 3.4.1 Skid Plate Replacement The skid plate is designed to protect the coil and may require replacement after long periods of use. There is no requirement to remove the skid plate to clean inside during routine maintenance or operation.
  • Page 33 F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ Coil Connector Figure 49: Removing Hinge Cover Unscrew and disconnect the coil connector. • Figure 50: Disconnecting Coil Connector Remove the pin coil cable from the upper end of the upper shaft. Turn the pin clockwise •...

  • Page 34: Coil Pivot

    F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ Insert a flat tip screwdriver into the slot underneath the cap shaft and lift and remove the • cap shaft. Slide the coil out and off the lower shaft, exposing the coil cable. • Figure 53: Sliding the Coil Off the Shaft Push the coil cable connector into the shaft hinge whilst gently pulling the coil cable out •...

  • Page 35: Removing Coil Pivot

    F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ Coil Pivot Kit, contains all items in this Table 3004-0045 30-29011-514 O-Ring 25mm ID x2 4311-0074 Pivot Coil Yoke 4311-0086 Pivot Shaft 4003-0123 Screw Nylon M6x29 4003-0121 Thumb Screw Nylon 1/4BSW 4308-0030 Pin Coil Pivot 4003-0116 Screw Nylon M6x14 0703-0204...

  • Page 36: Fitting The Coil Pivot

    F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ Separate the pivot lower shaft from the pivot coil yoke. Gently feed the coil cable through • the pivot lower shaft removing the pivot shaft from the coil cable. Do not stretch the coil cable. Pivot Coil Yoke Pivot Lower Shaft Figure 58: Removing Pivot Lower Shaft...
  • Page 37 F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ O-Ring 5 Coils inside Pivot Figure 60: O-Ring and Coil Cable Identify the section of coil cable closest to the coil and wind or unwind the coil cable to • achieve five turns. The five turns of cable will be located within the pivot with the pin coil pivot passing through the centre.
  • Page 38 F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ Push the pin coil pivot into the pivot coil yoke. The pin must travel up the centre of the • five turns of cable inside the pivot. If there is resistance to inserting the pin open the pivot and try again.

  • Page 39: Fitting The Coil

    F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ 3.4.6 Fitting the Coil With practice and a pull through tool it is possible to fit the coil to the detector without opening the detector body. Open the detector body as described in Section 3.1 - Opening the Detector Body.
  • Page 40 F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ Fit the cover shaft hinge to the shaft and screw into place. • Slide the coil into the end of the lower shaft. Fit the cap shaft then fit the two screws • (14mm Nylon). Figure 68: Fitting Coil to Lower Shaft Thread the coil cable through the detector hinge and fit the shaft onto the detector •...
  • Page 41 F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ The coil has now been fitted to the detector. Check the assembly and all moving parts. Insert batteries and then carry out mechanical & functional testing as described in Section Mechanical & Functional Testing.

  • Page 42: Shafts

    F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ 3.5 Shafts The complete shaft assembly of the detector is a line replaceable unit and Figure 71 illustrates the major parts. 4311-0073 8007-0065 4308-0014 0703-0202 8008-0059 4308-0018 8009-0011 8008-0060 8008-0062 8007-0063 8008-0061 8007-0064 8009-0012 Figure 71: Shaft Parts 3004-0045 Shaft Kit, contains all items in this table 3004-0046...

  • Page 43: Replacing A Camlock

    F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ 3.5.1 Replacing a Camlock Camlock replacement can be achieved as follows: Open the camlock lever and using a pin punch and hammer drive the camlock pin out. • Figure 72: Removing Camlock Pin Once the camlock pin has been removed the camlock pressure block can be removed and •...
  • Page 44 F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ Figure 74: Shaft and Coil removed from Detector Remove the pin coil cable from the upper end of the upper shaft. Turn the pin coil cable • clock wise and then lift out. Figure 75: Removing Pin Coil Cable Remove the two nylon screws from the cap shaft on the lower shaft as indicated in Figure •...

  • Page 45: Fitting The Shafts

    F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ Figure 77: Removing Coil Cable from Shafts Figure 78: Detector Shaft and Coil 3.5.3 Fitting the Shafts The detector body needs to be opened in order to fit the shafts to the detector, refer to Section 3.1 –...

  • Page 46: Handle

    F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ 3.6 Handle The handle assembly is a line replaceable unit and Figure 79 illustrates the major parts of the handle. 3014-0016 4308-0026 8005-0068 0703-0207 4308-0024 31-03512-982 8005-0069 8005-0067 9511-0134 4006-0038 4311-0076 4308-0023 4311-0079 4006-0041 4308-0022 Figure 79: Handle Parts Handle Kit, contains all items in this table.

  • Page 47: Removing The Handle

    F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ 3.6.1 Removing the Handle The detector body must first be opened to remove the handle as described in Section 3.1 - Opening the Detector Body. Once completed: Figure 80: Disconnect Wiring Loom Handle Disconnect the wiring loom handle. Hold one side of the connector firm against the •...

  • Page 48: Fitting The Handle

    F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ 3.6.2 Fitting the Handle To fit the handle the detector body must be opened as described in Section 3.1 - Opening the Detector Body. Once completed: Thread the wiring loom handle into the detector body. •...

  • Page 49: Armrest

    F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ Figure 85: Correct Position of Wiring Loom Handle Assemble the detector and close the detector body as described in Section 3.2 - Closing the Detector Body. 3.7 Armrest The armrest is a line replaceable unit with or without slide as shown in Figure 86. 3004-0049 Armrest Kit 3004-0048 Armrest Kit with Slide.

  • Page 50: Battery Compartment

    F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ Armrest Slide Figure 87: Removing the Armrest The armrest assembly can now be replaced as an assembly. If the armrest slide assembly must also be replaced then the detector body must be opened as described in Section 3.1 - Opening the Detector Body.

  • Page 51: Battery Lid Replacement

    F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ 3.8.1 Battery Lid Replacement Open the detector body as described in Section 3.1 - Opening the Detector Body. Once completed: Figure 89: Opened Detector Body Note The battery lid can be replaced without opening the detector body if the tether is unscrewed from the battery lid.
  • Page 52 F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ Refit the battery compartment by first feeding the battery connector through the hole in • the detector body. Slide the battery compartment into position. • Connect the battery connector. • Refit the two mounting screws (12mm). •...

  • Page 53: Detector Body

    F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ 3.9 Detector Body The detector body is not a line replaceable unit. The following assemblies within the detector body are line replaceable units and are available as service kits: 3004-0054 Switches kit • 3004-0056 Wiring Loom Handle Socket Kit •...
  • Page 54 F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ Open the detector body and remove the main PCB as described in Section 3.3.1 - Removing the Main PCB. Once completed: Identify the six way ribbon cable from the control switches to the interface PCB. •...
  • Page 55 F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ Note Do not use a soldering iron on the switches or the flexible ribbon cable. Check each control switch has a clean and lightly greased O-ring correctly positioned on • the mounting face. Carefully align the control switches and the flexible ribbon cable within the detector body •...

  • Page 56: Speaker Replacement

    F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ 3.9.2 Speaker Replacement The speaker is a line replaceable unit and available as a service kit, 3004-0057 Speaker Kit. Figure 95 illustrates the major parts of the speaker. 30-29011-034 0708-0011 30-03512-982 9511-0130 30-29011-011 30-05214-001 Figure 95: Speaker Kit 3004-0057 Speaker Kit, contains all items in this table 0708-0011...

  • Page 57: Wiring Loom Earset Replacement

    F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ Figure 96: Replacing Speaker Assembly Check speaker assembly is in good working order and the speaker cable is correctly • sealed into the speaker assembly and the E-Clip is fitted. Check the speaker O-ring is clean, lightly greased and correctly positioned in its channel in •...

  • Page 58: Wiring Loom Handle Socket Replacement

    F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ Disconnect the wiring loom earset from the interface PCB. Unscrew the 13mm nut from the earset connector and remove the nut and the connector • dust cover. The wiring loom earset can now be removed and replaced as required. The wiring loom earset is fitted to the detector following the reverse order of the removal.

  • Page 59: Detector Body Parts

    F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ Wiring Loom Handle Socket Connector to Interface PCB E-Clip Figure 99: Wiring Loom Handle Socket The wiring loom handle socket can now be removed and replaced. To fit the wiring loom handle socket follow the removal instruction above in reverse order. Then assemble the detector as described in Section 3.2 Closing the Detector Body.
  • Page 60 F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ 31-24020-982 Screw M4x20mm Figure 101: Detector right side 31-24035-982 Screw M4X35 4003-0119 Screw M4x35 Torx 0703-0206 4003-0118 2705-0061 Screw M4x20 Torx 30-43000-001 Figure 102: Detector right side 4308-0027 5904-0176 4007-0009 4309-0068 Figure 103: Detector body...
  • Page 61 F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ 0703-0203 Hinge Cover 31-24045-982 Screw M4x45skt head 0703-0205 Chassis Left (switches side) 0703-0206 Chassis Right (speaker side) 0304-0027 Rod Handle Slide 4309-0068 Seal Detector Body 4007-0009 Latch Hinge 4308-0027 Pin Handle Pivot 5904-0176 Pin Handle Pivot 2703-0040 Decal Switches 2705-0061...

  • Page 62: Fault Finding Procedures

    F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ Fault Finding Procedures 4.1 Introduction A functional test failure can generally be repaired by replacing one or all of the line replaceable units. The F3 COMPACT is designed so that line replaceable units can be exchanged between detectors without the need to calibrate.
  • Page 63 F3 COMPACT Service Manual _______________________________________________________________________________________________________________________ Ground Balance does ● replace handle not work ● replace coil ● replace main PCB Noise Cancel does not Note: Noise Cancel may not completely remove the effects of work interference if the source is powerful or in close proximity (no Noise Cancel tones ●...

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