F3 Mine Detector Service Manual EN 4904-0004-4
Contents
1. P0713 A Figure 25 Lower Section of Speaker Pod Showing Unique Screw Part 4 Remove the lower half of the speaker pod by lifting the rear of the pod upwards b To replace the speaker pod When replacing or reassembling speaker pods it is important to note that an F3L speaker pod is only functional on an F3L configured detector Similarly the standard F3 speaker pod is only functional on the F3 detector To reassemble the speaker pod Ensure that the handle has been fully assembled and the wiring loom is in place See Section 3 6 e Peel back the shroud at the end of the speaker pod plug as shown in Figure 26 Figure 26 Upper Shell of Speaker Pod Showing Shroud Peeled Back Refit the lower half of the speaker pod by inserting the tongue at the front top of the handle into the recess in the lower half of the speaker pod Figure 27 Page 22 F3 Field Service Manual P0715 A Figure 27 Fitting Speaker Pod onto Handle Ensure the wiring loom plug emerges from the handle into the speaker pod in the correct position as shown in Figure 28 P0716 A Figure 28 Correct Position of Wiring Loom Plug Red Arrow e Using the unique screw Part 4 secure the speaker pod to the handle If the speaker pod socket is dry smear a small amount of silicon grease around the shroud to assist in maintaining a waterproof seal By securing the wiring loom plug between thumb and forefinger gently snap the speaker p2. NOTE If fitted the retainer plug will stop the coil cable from being retracted down the shafts once the coil plug is unscrewed from the electronics pack If a retainer plug is not fitted connect the coil cable pull through from the F3 Tool Kit to secure the coil cable Alternatively the cable can be secured by tying the plug to a length of string Remove the electronics pack from the upper shaft b To fit an electronics pack Slide the electronics pack on to the upper shaft until the coil socket is within 10cm 4ins of the end of the upper shaft Apply a small amount of silicon sealant to the coil socket thread If necessary remove coil pull through from the coil plug ensuring that the coil cable does not untwist Reconnect the coil plug Part 5 to the electronics pack using the coil plug retainer Part 4 or fingers DO NOT OVERTIGHTEN Remove excess sealant Slide the electronics pack all the way along the upper shaft ensuring the wiring loom cable lays in the cut out at the top of the electronics pack rear cover Refit the two screws Part 7 securing the electronics pack to the upper shaft Check the condition of the O ring Part 8 and apply a small amount of silicone grease as required Ensure the O ring Part 8 is positioned correctly in the groove under the bulkhead cover in the electronics pack rear panel Ensure that the keyway on the wiring loom plug Figure 12 is towards the bottom
3. 8008 0005 CAM LEVER F3 8008 0022 PRESSURE BLOCK UPPER F3 4308 0003 CAMLEVER PIVOT PIN 8008 0021 CAMLOCK BODY UPPER F3 6 8007 0023 o SHAFT BLACK F3 not part of Camlock Figure 47 Upper Camlock Assembly d To reassemble the upper camlock Refit the upper camlock body to the upper shaft ensuring that that the square hole in the camlock body is aligned with the cut out in the upper shaft Figure 48 Page 34 F3 Field Service Manual a Figure 48 Upper Camlock Positioned on Upper Shaft Place the tail of the upper pressure block into the recess in the rear of the upper camlock body and push the block down into the square hole Figure 49 NOTE Ensure that the pressure block does not protrude too far into the shaft If necessary push it back into the camlock body otherwise difficulty may be encountered when fitting the middle shaft P0747 A Figure 49 Reassembling the Upper Camlock Assembly Hold the cam lever in place whilst the cam lever pivot pin is pushed into the camlock body Open the upper cam lever Page 35 F3 Field Service Manual e To reassemble the middle camlock assembly Using Figure 50 as a guide attach the two collar shafts Part 3 to the rear of the middle shaft Upper Shaft P0706 A E 23004 0008 MIDDLE SHAFT KIT SVC BLACK F3 3004 0012 CAMLOCK KIT MIDDLE SHAFT F3 not shown see next figure 8007 0024 MIDDLE SHAFT BLACK F3 8003 0019 COLLAR SHAF
4. Figure 24 illustrates the major parts of the speaker pod 3004 0017 KIT SVC SPEAKER POD ASSY F3 3004 0037 KIT SVC F3L SPEAKER POD ASSY 0705 0019 SPEAKER UPPER ASSY F3 0708 0004 a SPEAKER LOWER 2701 0092 DECAL SPEAKER HANDLE F3 4003 0083 SCREW M3X10 SS fine pitch thread 4003 0084 SCREW NO 3X12 SS Figure 24 Exploded View of Speaker Pod NOTE Depending on the version of speaker pod there may be five instead of three Screw No 3x12 SS Part 5 a To remove the speaker pod Remove battery pack and sensitivity endcap from the detector Remove three or five depending on pod version screws Part 5 on underside of speaker pod Page 21 F3 Field Service Manual Remove the top half of the speaker pod by lifting the pod gently upward until the speaker pod plug comes clear of the handle Using fingers support the main wiring loom socket against the lower half of the speaker pod and disconnect the speaker pod plug from the main wiring loom NOTE Do not try and remove the loudspeaker ground balance audio reset button or wiring from the upper half of the speaker pod these components are permanently sealed into the upper half of the speaker pod Remove the screw Part 4 Figure 25 which secures the lower half of the speaker pod to the handle The nut for this screw sits in a recess between the two handle halves This screw is a unique screw and cannot be used on any other part of the detector
5. and dry conditions or at local depots No special tools are required but it is recommended that the F3 Service Tool Kit be used C Servicing the F3 is restricted to the exchange of line replaceable units following the identification of a faulty sub assembly Servicing DOES NOT include any repairs to printed circuit boards as this is only conducted at a Minelab facility d This manual should be read in conjunction with the F3 Operations Manual Additionally from time to time Minelab will issue Technical Service Notes which serve to supplement the information contained in this manual e Any questions regarding this manual or any repair procedure can be directed to Minelab via the following internet link http minelab com Page 4 F3 Field Service Manual 2 Mechanical amp Functional Testing Batteries Endcap Red Low Sensitivity F3 Soft Endcap o Black High Carry oS a Sensitivity F3 Bag M s 3 Ze Field Guide amp NSC Operations SS Manual underneath detector Battery Pack gt Bag amp Extension Cable or Spare Detector Battery Pack Earset a optional underneath Test Piece PO8SS C Figure 1 F3 Packed in its Hard Case a Whenever a detector is returned for servicing mechanical and functional tests must be completed to confirm and or identify the fault Figure 1 illustrates the complete detector when packed in its hard case A visual inspection should be conducted to ensure all parts are present and an
6. the right handle half if required Page 24 F3 Field Service Manual To assemble the handle Position the right handle half onto the upper shaft Lay the wiring loom into the cable channels and ensure the wiring loom plug exits the top of the handle in front of the upper screw boss Figure 31 Figure 31 Right Handle with Wiring Loom Correctly Positioned Ensure the lower portion of the wiring loom cable sits under the rear handle screw boss and cannot be snagged by the bolts once the handle is assembled Ensure the on off switch slider is correctly positioned Place the nut Part 4 which secures the speaker pod assembly to the handle into the recess near the top of the handle Figure 32 NOTE Ensure the nut remains in place during the rest of the assembly procedure otherwise it will not be possible to secure the speaker pod onto the handle Figure 32 Nut Part 4 Correctly Positioned in Handle Recess Fit the earset dustcap into the recess in the handle just forward of the earset plug Figure 33 Page 25 Hold the handle together tightly until the first two bolts have been fitted otherwise the internal nut or main wiring loom may become dislodged The four bolts should initially only be done 3 7 F3 Field Service Manual P0719 A Figure 33 Recess for Earset Plug Dustcap Carefully fit the left handle half to the right handle half and upper shaft Ensure both halves are secured to the upper shaft N
7. 0 gt P 0734 A Figure 19 Coil Cable with 52 Turns Slide the coil cable pull through the shafts starting from the lower end until the lower camlock assembly is resting above the coil Figure 20 Figure 20 Using the Pull Through to Thread Cable Through Shafts Page 19 F3 Field Service Manual NOTE It is important that the curly cable or coil cable pull through is not twisted as this will change the number of turns in the curly cable If the correct number of turns is not present the curly cable may stop the shafts from retracting correctly Refit the lower camlock assembly to the coil top The flat sides on the friction blocks should be facing down into the coil top Figure 21 Figure 21 Lower Camlock Assembly Showing Friction Block Fitment Position the two tabs at the rear of the coil retainer cover Figure 22 into the cut outs in the rear of the coil top Figure 22 Coil Retainer with Tabs Indicated Maintaining downward pressure on the coil retainer pivot the front of the coil retainer cover down towards the coil top o Use the palm of the hand to snap the coil retainer cover into the coil top Figure 23 Page 20 F3 Field Service Manual Bea F Tay Mh i P P n A iy 3 A a al i ea be oh ii l l P0738 A BE o PO0739 A Figure 23 Fitting the Coil Retainer e Reconnect the electronics pack to the coil cable as described in Section 3 3 b 3 5 Speaker Pod
8. 9 to the electronics pack rear panel Pull the bulkhead cover away from the electronics pack Gently unplug the wiring loom plug from the electronics pack printed circuit board Figure 35 Figure 35 Removal of Wiring Loom from Electronics Pack NOTE Extreme care must be taken when removing the wiring loom plug from the electronics pack DO NOT use excessive force as this may cause damage to the connector on the printed circuit board e Undo and remove the upper two screws Part 7 securing the electronics pack to the upper shaft Slide the electronics pack back along the upper shaft avoid snagging the wiring loom approximately 10cms 4ins Remove the bulk head cover Part 9 split grommet Part 12 and ribbon cover Part 13 from the wiring loom NOTE Page 27 F3 Field Service Manual To remove the split grommet use fingers to open the split wide enough for the ribbon cable to slide through Gently pull the wiring loom through the spine of the upper shaft toward the handle and remove it With a new wiring loom gently push the cable connector first through the spine of the upper shaft Figure 36 emerging at the opening at the end of the upper shaft NOTE The connector on the wiring loom should NEVER be pulled or forced because this could cause damage to the ribbon connection The wiring loom is designed to slide through the spine with ease but if necessary apply a small amount of silicone greas
9. Cancel tones emitted e replace wiring loom e replace electronics pack Audio Reset does e replace speaker pod not work e replace wiring loom e replace coil LEDs do not e ensure detector is F3L configuration if not speaker pod is illuminate F3L only incorrectly matched e pressing and hold the button and quickly press and release the green ground balance button e replace speaker pod F3L version e ensure detector has been switched on for 30 secs before conducting the test e conduct Audio Reset e fit and use an earset e if using an F3L ensure volume level is set to default e conduct Noise Cancel e ensure coil plug is securely fitted to electronics pack e replace electronics pack e replace coil Start Up tones keep e insert new batteries repeating e replace electronics pack e replace wiring loom In the collapsed e conduct Audio Reset position the detector e extend shafts makes aloud noise e conduct Audio Reset when coil is tilted work e replace wiring loom Shafts will not e fully extend leave for five minutes very slowly collapse shafts collapse e remove coil and remove any dirt located in the shaft and on the cable inspect cable for any damage if none ensure the coil Cannot hear the Test Piece has 52 turns and assemble back into the detector fit coil pin if not present e if cable damaged replace with new coil Page 41 F3 Field Service Manual ON OFF slide is very e di
10. ER SHAFT BLACK F3 9511 0097 WIRING LOOM F3 SHAFT HANDLE 3 COIL CABLE PART OF 2021 0054 COIL F3 4 8009 0007 RETAINER PLUG F3 5 _ COIL PLUG PART OF 2021 0054 COIL F3 6 3004 0036 ELECTRONICS PACK KIT SVC F3L 6 3004 0001 ELECTRONICS PACK KIT SVC F3 8 4309 0039 O RING BULKHEAD 50MM 9 0703 0095 COVERBULKHEADF3 0703 0097 Figure 10 Electronics Pack NOTE The F3L electronics pack can be identified by a yellow dot on the rear of the housing To remove the electronics pack Remove battery pack and sensitivity endcap Undo and remove the six screws Part 10 holding the bulkhead cover Part 9 to the electronics pack rear panel Pull the bulkhead cover away from the electronics pack Gently unplug the wiring loom plug from the electronics pack printed circuit board Figure 11 Page 14 F3 Field Service Manual Figure 11 Removal of Wiring Loom from Electronics Pack NOTE Extreme care must be taken when removing the wiring loom plug from the electronics pack DO NOT use excessive force as this may cause damage to the connector on the printed circuit board Undo and remove the upper two screws Part 7 securing the electronics pack to the upper shaft Slide the electronics pack back along the upper shaft avoid snagging the wiring loom approximately 10cms 4ins exposing the coil plug Part 5 e Using the retainer plug Part 4 if fitted gently unscrew the coil plug Part 5
11. F3 Field Service Manual Middle Camlock Assembly Upper Shaft Lower Shaft PO701 A 3004 0011 CAMLOCK KIT LOWER SHAFT F3 8007 0022 CAMLOCK BODY LOWER F3 8008 0031 PRESSURE BLOCK LOWER F3 8008 0030 WEAR PLATE F3 8008 0029 CAM LEVER LOWER CAMLOCK F3 4308 0008 PINLOWER CAMLOCK F3 Figure 45 Lower Camlock Assembly To disassemble the middle camlock and shaft Using Figure 46 as a guide use the 3mm T handle hex driver to push out the cam lever pivot pin Part 5 from the middle camlock body Part 1 Remove the cam lever Remove the pressure block by pushing it out from inside the shaft Remove the middle shaft by pushing it back through the upper shaft Upper Shaft Middle Shaft z 3004 0012 CAMLOCK KIT MIDDLE SHAFT F3 8008 0023 CAMLOCK BODY MIDDLE F3 Page 33 F3 Field Service Manual 8008 0005 CAM LEVER F3 8008 0030 WEAR PLATE F3 8008 0024 PRESSURE BLOCK MIDDLE CAMLOCK F3 4308 0003 CAM LEVER PIVOT PIN Figure 46 Middle Camlock Assembly C To disassemble the upper camlock Using Figure 47 as a guide use the 3mm T handle hex driver to push out the cam lever pivot pin Part 4 from the upper camlock Part 5 e Remove the cam lever Remove the upper pressure block by pushing the block out from inside the shaft Remove the upper camlock body from the upper shaft 2 P0704 A 3004 0013 CAMLOCK KIT UPPER SHAFT F3 8008 0030 WEAR PLATE F3
12. F3 Metal Mine Detector SERVICE MANUAL PO699 B Version 4 Febrary 2010 Part No 4904 0004 MINELAB F3 Field Service Manual WARNING THIS DOCUMENT CONTAINS MINELAB ELECTRONICS LIMITED RIGHTS TECHNICAL DATA OR RESTRICTED RIGHTS DATA OR BOTH Minelab Electronics This work is copyright Apart from any use as permitted under the Copyright Act 1968 no part may be reproduced by any process without written permission from Minelab Electronics 118 Hayward Avenue Torrensville South Australia 5031 Page 2 CONTENTS Section 1 Introduction 2 Mechanical amp Functional Testing 2 1 Mechanical Testing 2 2 Functional Testing 3 Disassembly amp Reassembly Procedures 3 1 Introduction 3 2 F3 Tool Kit 3 3 Electronics Pack 3 4 Coil 3 5 Speaker Pod 3 6 Handle 3 7 Wiring Loom 3 8 Armrest 3 9 Shafts 3 10 Battery Pack 4 Fault Finding Procedures 4 1 Introduction 4 2 Trouble Shooting Table Page F3 Field Service Manual 1 Introduction a Servicing the F3 Series of detectors comprises fault finding repair and maintenance and is designed to be simple and fast thereby reducing the amount of time a detector is unusable Repair and maintenance is based on line replaceable units which can be fitted to a detector without the need for adjustment or calibration Additionally serviceable line replaceable units can be exchanged between detectors as required b Servicing the F3 can be conducted within the field under clean
13. If functioning correctly Noise Cancel will commence with two single beeps followed by 45 seconds of sharp double beeps and finishing with four single beeps Page d F3 Field Service Manual During the 45 seconds the detector scans the environment searching for the source of any electrical interference Once detected the F3 will automatically select a different operating frequency to eliminate or reduce the interference If the correct sequence of Noise Cancel beeps is not heard refer to Section 4 for faultfinding procedures Audio Reset Test This test confirms the audio reset button also the ground balance button wiring loom and electronics pack are functioning correctly The objective is to ensure the Threshold Tone returns to its correct volume if altered from its steady state The test is conducted as follows Hold the coil at least 600mm 24ins off the ground and away from any metallic objects Induce a Threshold Tone rise in volume by collapsing the lower shaft into the middle shaft Alternatively slowly move the coil toward a metal object and once the Threshold Tone increases in volume hold the detector stationary Once the Threshold Tone has increased in volume press and immediately release the green ground balance button Figure 5 NOTE If the ground balance button is not immediately released the F3 will commence the Ground e Balance procedure Figure 5 Audio Reset Within two seconds the Threshold
14. OTE up loosely Tighten the four bolts Wiring Loom To remove and exchange the wiring loom it is necessary to remove the speaker pod disassemble the handle and disconnect the electronics pack from the upper shaft a b To remove the speaker pod follow the instructions given in Section 3 5 a To disassemble the handle follow the instructions given in Section 3 6 a To disconnect the electronics pack refer to Figure 34 and proceed as follows P0699 B 8007 0023 UPPER SHAFT BLACK F3 9511 0097 WIRING LOOM F3 SHAFT HANDLE 3 COIL CABLE PART OF 2021 0054 COIL F3 8009 0007 RETAINER PLUG F3 Page 26 F3 Field Service Manual COIL PLUG PART OF 2021 0054 COIL F3 a 6 3004 0036 ELECTRONICS PACKKITSVCF3L_ 6 3004 0001 ELECTRONICS PACK KIT SVCF3 _ _ 8 4309 0039 O RING BULKHEAD 50MM 9 0703 0095 COVER BULKHEAD F3 Figure 34 Electronics Pack NOTE The F3 and F3L use different electronics packs and should not be interchanged unless the correct speaker pods F3L requires the speaker pod with LED display are also fitted Remove battery pack and sensitivity endcap Undo and remove the two screws Part 11 holding the ribbon cable cover Part 13 to the bulkhead cover Part 9 Carefully pull back the ribbon cable cover releasing the split grommet Part 12 from the bulk head cover Undo and remove the six screws Part 10 holding the bulkhead cover Part
15. T MIDDLE F3 Figure 50 Fitting the Middle Shaft Slide the middle shaft into the rear of the upper shaft with the square hole facing down Place the tail of the middle pressure block into the recess in the front of the middle camlock body and push the block into the square hole Refit the cam lever and cam lever pivot pin Figure 51 NOTE Ensure that the pressure block does not protrude too far into the shaft If required push it back into the camlock body otherwise difficulty may be encountered when fitting the lower shaft P0750 A E a P0751 A Page 36 F3 Field Service Manual P0752 A Figure 51 Reassembling Middle Camlock Assembly Slide the middle shaft all the way into the upper shaft and close the upper cam lever Open the middle cam lever f To reassemble the lower camlock and shaft Refit the cam lever with a lower camlock pin into the camlock body Open the lower cam lever Place the lower pressure block into the lower camlock body Figure 52 P0753 A Figure 52 Fitting Lower Pressure Block into Lower Camlock Slide the lower shaft through the upper middle shafts protruding section at front of the lower shaft uppermost Figure 53 Lower Shaft Upper Shaft Insert Lower Shaft sa this way Middle Shaft PO0705 A Figure 53 Inserting the Lower Shaft Page 37 F3 Field Service Manual Holding the detector and lower camlock assembly upsi
16. Tone should return to its correct level If the threshold tone does not return to the correct level refer to Section 4 for faultfinding procedures Ground Balance Test This test confirms the detector is capable of ground balancing against mineralised ground In doing so it confirms the correct operation of the ground balance button wiring loom and coil The test is conducted as follows Ensure hands and arms are free of metallic objects watches rings etc and that no other metallic objects are near the coil Keeping the detector stationary press and hold the ground balance button for five seconds then release the button NOTE This action will cause the F3 to delete the previously stored ground balance condition Unless this is done the detector will remember its last ground balance condition regardless of the unit being switched off or the batteries removed Page 8 F3 Field Service Manual Slowly move the ground balance test piece from approximately 150mm 6ins above the centre of the coil towards the centre of the coil and confirm that a rise in Threshold Tone occurs This confirms that the F3 is detecting the mineralised content of the ground balance test piece Press down and hold the ground balance button whilst slowly moving the ground balance test piece from approximately 150mm 6ins above the centre of the coil towards the centre of the coil and touching the coil Then move the ground balance test piece away fro
17. agnostics discover no system fault The test is conducted as follows C Extend the lower shaft at least 150mm 6ins Hold the coil at least 600mm 24ins from the ground and away from any metallic objects and switch on Ensure that four rising tones occur over approximately 12 seconds A steady threshold tone should be heard a few seconds after the rising tones finish NOTE On occasion it is possible that more than four rising tones occur This does not represent a fault provided the rising tones finish and a steady threshold tone is produced 24 or 60cm 12 seconds Figure 3 Switch ON Test If the correct tones are not heard check that good batteries are being used and that the batteries are fitted correctly If the correct tones are still not heard refer to Section 4 for faultfinding procedures Noise Cancel Test The test ensures the F3 successfully completes the noise cancel procedure required whenever local electrical interference is present During the test the Noise Cancel button wiring loom and electronics pack are checked for correct operation The test is conducted as follows Hold the coil stationary and at least 600mm 24ins above the ground and away from any large metal objects during the test Press and immediately release the Noise Cancel button Figure 4 Figure 4 Noise Cancel NOTE The coil should not be moved nor should metallic objects be brought near the coil during this procedure
18. de down to prevent the lower pressure block falling out slide the lower camlock assembly fully onto the lower shaft with a twisting motion P0754 A Figure 54 Attaching Lower Camlock Turn the detector back over and ensure that the lower camlock assembly is positioned on the lower shaft with the cam lever uppermost Refit the other lower camlock pin Figure 55 P0755 A Figure 55 Connected Lower Camlock Refit the friction blocks to the lower camlock body The flat side of the friction blocks should face down Connect coil Section 3 4 b electronics pack Section 3 3 b and wiring loom as applicable Page 38 F3 Field Service Manual 3 10 Battery Pack The battery pack is a line replaceable unit and is not normally disassembled for repair The major component parts of the battery pack are shown in Figure 56 0311 0018 BATTERY PACK F3 BLACK SCREW M3X20 SKT CAP PANEL ASSY CAP REAR BP F3 O RING ENDCAP BP EP F3 HOUSING BP BLACK F3 0703 0126 BATTERY TUBE BP F3 6 0703 0079 CAP FRONT BP F3 RIVET part of TETHER WITH RIVET KIT SVC BP F3 3004 0005 8 0705 0015 PANEL ASSY LID BP F3 BATTERY PACK LID 9 0703 0098 FACEPLATE CAP FRONT BP F3 Figure 56 Battery Pack Component Parts Page 39 F3 Field Service Manual 4 Fault Finding Procedures 4 1 Introduction A functional test failure Section 2 2 can generally be repaired by replacing one or all of the following line replaceabl
19. e to assist the movement of the wiring loom through the spine Figure 36 Pushing the Wiring Loom Through the Upper Shaft Spine Having threaded the new wiring loom attach the ribbon cable cover split grommet and bulkhead cover in the order shown in Figure 37 P0723 A Figure 37 Correct Placement of Wiring Loom Orange Ribbon Cover Blue Split Grommet Red and Bulkhead Cover Green Slide the electronics pack all the way along the upper shaft ensuring the wiring loom cable lays in the cut out at the top of the electronics pack rear cover Refit the two screws Part 7 securing the electronics pack to the upper shaft Check the condition of the O ring Part 8 and apply a small amount of silicone grease as required Ensure the O ring Part 8 is positioned correctly in the groove under the bulkhead cover in the electronics pack rear panel Ensure that the keyway on the wiring loom plug Figure 38 is towards the bottom of the electronics pack then plug the main wiring loom into socket on the printed circuit board inside the electronics pack Page 28 F3 Field Service Manual P0724 A P0725 A Figure 38 Correct Fitting of the Wiring Loom into the Electronics Pack NOTE Take great care when connecting the wiring loom plug to the electronics pack DO NOT force the connection because this could damage or break the connector on the printed circuit board Fold excess main wiring loom cable int
20. e units Coil Wiring Loom Electronics Pack a The F3 is designed so that line replaceable units can be exchanged between detectors without the need to calibrate This means that where spare parts are not available and more than one detector is faulty then parts from one detector can be used to make another serviceable For example if detector 1 has an unserviceable coil and detector 2 has an unserviceable electronics pack then the coil from detector 2 can replace the coil on detector 1 thereby producing a serviceable detector b Whenever a line replaceable unit is exchanged follow the applicable procedure described in Section 3 C Where the source of a fault is unknown due to the ease of replacement it is recommended that line replaceable units be exchanged in the following sequence Electronics Pack o Coil Wiring Loom 4 2 Trouble Shooting Table The following table identifies a number of faults and provides recommended solutions The suggested solutions should be investigated in the order they are listed Recommended Solutions F3 will not switch on e check batteries are installed correctly e replace batteries with fresh batteries e remove and refit battery pack e replace battery pack e replace wiring loom e replace electronics pack e remove battery pack and refit e check magnet on ON OFF slide has not been dislodged and connected to the wiring loom overmould replace wiring loom replace electron
21. eard Figure 8 Test Piece Test Page 11 F3 Field Service Manual If the test piece is not heard conduct audio reset and repeat the test If the test piece is still not heard refer to Section 4 for faultfinding procedures e Red Endcap Ensure the red endcap is securely fitted to the electronics pack switch on and wait until the steady threshold tone is heard Conduct the test as follows Hold the test piece above the middle of the coil with the rounded end containing the metallic target towards the coil Move the test piece towards the centre of the coil until it lightly touches the coil then move it sideways off the coil Confirm a faint but clear response change in threshold tone volume and pitch is heard If the test piece is not heard conduct audio reset and repeat the test It the test piece is still not heard refer to Section 4 for faultfinding procedures NOTE When using a yellow endcap volume and sensitivity levels can be customised using Minelab s application software The Test Piece Test as described above is not suitable for use with the F3 and a yellow endcap Where sensitivity testing is to be conducted using a specific customised configuration it is the responsibility of the user to provide an appropriate target with which to confirm the sensitivity of the detector satisfies operational requirements j Provided the detector passes all functional tests it is serviceable and ready for operati
22. ics pack After switching on check for tone using the earset the F3 makes no if there is tone through earset replace speaker pod sound from speaker if there is no tone through earset replace wiring loom if there is no tone through earset replace electronics pack Threshold tone is replace wiring loom intermittent including LEDs for F3L Threshold Tone is ensure area is free from local electromagnetic interference too loud conduct Audio Reset conduct Noise Cancel replace coil replace electronics pack replace wiring loom F3 will not switch off Page 40 F3 Field Service Manual On switch on the e check the coil plug is firmly secured to the electronics pack Coil Fault tone e inspect coil cable for damage if no damage replace occurs low pitched electronics pack double tone every e if damaged replace with new coil five seconds On switch on the e check endcap is secure Equipment Fault e replace electronics pack tone occurs low pitched slow oscillating tone ee aww ee aww After working in hot conduct Audio Reset conditions detector replace coil makes a loud noise replace electronics pack replace wiring loom Ground Balance replace speaker pod does not work replace wiring loom replace coil replace electronics pack Noise Cancel does Note Noise Cancel may not completely remove the effects of not work interference if the source is powerful or in close proximity no Noise Cancel e repeat Noise
23. m lever Part 6 cam lever pivot pin Part 3 and armrest pressure block Part 7 Inspect and replace parts as required b To assemble the armrest Position the right half of the armrest onto the upper shaft Fit the armrest pressure block cam lever pivot pin and cam lever into the right armrest half Carefully fit the left armrest half to the right armrest half and upper shaft Refit the three bolts and nuts NOTE If the armrest is difficult to slide on the upper shaft the middle bolt may need to be loosened Page 31 F3 Field Service Manual C To refit the armstrap use Figure 43 as a guide Figure 43 Lacing the Armstrap View from Coil 3 9 Shafts The following procedures detail shaft disassembly assembly and should be followed in order until the component to be replaced is accessible Figure 44 illustrates the components of the shaft assembly Upper Camlock Assembly Middle Camlock Assembly Upper Shaft Yoke and Lower Camlock Assembly P0711 A Figure 44 Shaft Assembly Components a To disassemble lower camlock and lower shaft Remove the electronics pack Section 3 3 a and coil Section 3 4 a Using Figure 45 as a guide use the 3mm T handle hex driver from the Tool Kit to push out the two lower camlock pins Part 5 Remove the lower camlock body Part 1 from the lower shaft Remove the lower shaft by pushing it back through the upper middle shafts Page 32
24. m the centre of the coil to a distance of 150mm 6ins Repeat this process until the Ground Balance OK tone consisting of a short high pitched double beep occurs This tone confirms the ground balance procedure has been completed correctly Release the ground balance button and confirm that a steady low volume Threshold Tone remains Confirm the ground balance is correct by moving the ground balance test piece from approximately 150mm 6ins above the centre of 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 lf an alarm occurs repeat the above procedure If ground balance cannot be achieved refer to Section 4 for faultfinding procedures NOTE Where the Ground Balance Test is conducted using local soil Figure 6 illustrates the procedure to be followed ene Figure 6 Ground Balance NOTE Successful ground balancing occurs within 5 to 10 seconds Where the ground balance test f piece or local ground conditions are not sufficiently mineralised the Ground Balance Ok tones may take a longer time to occur Earset Test This test test confirms the earset is operating correctly and is conducted as follows Plug the earset into the detector as shown in Figure 7 Page 9 F3 Field Service Manual Figure 7 Connecting the Earset Switch the F3 on and confirm the Threshold Tone is audible If an earset s
25. o the electronics pack above the plug Figure 39 Figure 39 Excess Wiring Loom Cable Folded Correctly Refit the bulkhead cover with six screws If necessary apply a light covering of silicone grease to the split grommet and fit it into the opening on the bulk head cover Figure 40 and secure it into place with the ribbon cover and two screws Figure 40 Split Grommet amp Bulk Head Cover Opening Page 29 d e F3 Field Service Manual Route the wiring loom around the cable router on the side of the bulkhead cover Figure 41 a Figure 41 Wiring Loom Routing Refit the sensitivity endcap To assemble the handle follow the instructions given in Section 3 6 b To assemble the speaker pod follow the instructions given in Section 3 5 b Page 30 F3 Field Service Manual 3 8 Armrest Figure 42 illustrates the major parts of the armrest P0693 A _ 8013 0002 ARMREST ASSEMBLY F3 NUT M4 NYLOC SS BOLT M4X30 SKT SS CAMLEVER PIVOT PIN reer Ta ARMREST HALF part of ARMREST L R 3004 0015 eal ARMREST HALF part of ARMREST 6 8008 0005 CAM LEVER F3 8008 0026 PRESSURE BLOCK ARMREST F3 8008 0030 WEAR PLATE F3 aa 9 8005 0018 STRAP ARMREST F3 Figure 42 Armrest Component Parts a To disassemble the armrest e Unlace the armrest if required e Undo and remove the three bolts and nuts holding the armrest halves together o Carefully pull the armrest halves apart exposing the ca
26. od socket onto the plug and roll back the shroud onto the wiring loom socket Figure 29 Figure 29 Connecting Speaker Pod to Wiring Loom Gently push the upper half of the pod down towards the handle until both halves of the pod are correctly mated Page 23 3 6 F3 Field Service Manual Refit the three or five depending on speaker pod version screws Part 5 which hold the pod halves together Refit sensitivity endcap and battery pack Handle Figure 30 illustrates the major parts of the handle 8013 0001 HANDLE ASSEMBLY F3 NUT M4 NYLOC SS RIGHT HANDLE HALF part of HANDLE L R LEFT HANDLE HALF part of HANDLE L R KIT NUT STANDARD SS F3 6 8301 0031 SWITCH ASSY SLIDER F3 _ 8 4003 0062 BOLT M4X20 SKTSS 9 4003 0061 BOLTM4X10SKTSS_ CS Figure 30 Exploded View of Handle NOTE The noise cancel button and earset connector are an integral part of the main wiring loom and this assembly is waterproof Do not try to disassemble the main wiring loom Itis not repairable To disassemble the handle Remove the speaker pod Section 3 5 a Undo and remove the four nuts and bolts holding the handle halves together Carefully separate the left handle half from the upper shaft Remove the nut Part 4 that secures the lower speaker pod screw to the handle Remove the earset dustcap Part 5 The wiring loom Part 7 and on off switch assembly slider Part 6 can now be removed from
27. of the electronics pack then plug the main wiring loom into the socket on the printed circuit board inside the electronics pack Page 15 F3 Field Service Manual P0724 A P0725 A Figure 12 Correct Fitting of the Wiring Loom into the Electronics Pack NOTE Take great care when connecting the wiring loom plug to the electronics pack DO NOT force the connection because this could damage or break the connector on the printed circuit board Fold excess wiring loom cable into the electronics pack above the plug P 0726 A Figure 13 Excess Wiring Loom Cable Folded Correctly amp Cable Router Refit the bulkhead cover with six screws Route the wiring loom around the cable router on the side of the bulkhead cover Figure 13 Refit the sensitivity endcap Page 16 F3 Field Service Manual 3 4 Coil Figure 14 illustrates the major parts involved in removing and replacing the coil P0697 A 3004 0003 COIL KIT SVC F3 3004 0038 __ KIT SVC COIL RETAINER contains pt 1 amp 3_ Figure 14 Coil a To remove the coil Retract the shafts and remove the battery pack Remove the electronics pack as described in Section 3 3 a However there is no need to remove the electronics pack from the upper shaft Remove the coil plug retainer if fitted from around the coil plug Figure 15 Allow the coil cable to retract into the shafts P0729 A Figure 15 Removing Coil Plug Retainer Maintaining fi
28. ons The detector can now be packed into the hard case ensuring batteries are removed and stowed and all accessories are in place Page 12 F3 Field Service Manual 3 Disassembly amp Reassembly Procedures 3 1 Introduction 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 3 2 F3 Tool Kit The F3 Tool Kit Part No 3004 0018 is required to disassemble and reassemble the F3 The tool kit Figure 9 comprises e Minelab Part No Description 0005 0014 Silicon Grease 100g tube 0005 0010 Silicon Sealant 75g tube 8701 0009 Tubular Spanner 7 8 8701 0010 F3 Coil Cable Pull Through 8701 0011 Screwdriver Pozidrive No 1 e 8701 0018 Hex Key T Handle 2 5mm 8701 0012 Hex Key T Handle 3 0mm 8701 0013 Flat blade screwdriver 6 5mm x 150mm Figure 9 F3 Tool Kit NOTE All tools except the F3 Coil Cable Pull Through are commercially available If necessary a length of string can be used as the F3 Coil Cable Pull Through 3 3 Electronics Pack Figure 10 illustrates the major parts involved in removing and replacing the electronics pack The F3 and F3L use different electronics packs and should not be interchanged unless the correct speaker pods F3L requires the speaker pod with LED display are also fitted Page 13 F3 Field Service Manual PO699 B 8007 0023 UPP
29. peaker on 4523 0027 is being tested check that tones can also be heard from the detector loudspeaker If an earset speaker off 4523 0025 identified by green band on earset cable near the plug is being tested check that no tones can be heard from the detector loudspeaker NOTE If the detector being serviced is an F3L configuration contains LEDs on handle assembly the LEDs should illuminate when using an earset speaker on and extinguish when using an earset speaker off e If a fault is discovered refer to Section 4 for faultfinding procedures g Alarm Tone Test This test will produce an alarm when either the red endcap or yellow endcap is dislodged This is a safety feature designed to ensure the detector operates at the correct level of sensitivity To conduct the test e With a red or yellow endcap fitted and the detector switched on remove the endcap and confirm that a continuous cycling alarm tone is produced If an alarm tone does not occur refer to Section 4 for faultfinding procedures NOTE The red and yellow endcaps are detected by the electronics pack due to magnets located within the endcaps The black endcap has no magnets and represents the default sensitivity of the F3 This means the black endcap if dislodged will not cause an alarm because the detector is already operating at the default sensitivity h F3L LED and Volume Control Test For the F3L configuration LED and volume control is tes
30. psed smoothly and without any snagging Armrest Strap Endcap Armrest _ SAS Upper J Shaft is EI i OR ectronics Ly Pack R RY y Ground aie Battery Balance VA Pack Audio Reset Button Na Handle a m fe Middle On Off Switch Camlock Noise Cancel Button dy Shaft Middle Camlock Earset T Socket gt D Skidplate P0635 A P0621 A Figure 2 F3 Major Components amp Handle Controls a To replace any worn or damaged parts found during mechanical testing refer to Section 4 2 2 Functional Testing Functional testing is used to confirm the serviceability of an F3 before it is returned to the field for use and whenever doubt exists about the serviceability of an F3 The F3 must pass all tests to be considered serviceable and ready for use in operations Whenever a line replaceable unit is replaced all functional testing must be completed a Functional testing requires a ground balance test piece The ground balance test piece simulates mineralised ground which results in an alarm from the F3 A mineralised hot rock or adequate amounts of local mineralised soil is suitable Alternatively a floor tile may be suitable for use as a ground balance test piece NOTE Do not use any metal object as a ground balance test piece Page 6 b F3 Field Service Manual Switch ON Test The Switch ON Test checks that power is correctly supplied to the electronics pack and internal di
31. rm downward pressure on the 6 5mm screwdriver carefully lever the coil retainer cover off the coil top and remove it Figure 16 Page 17 F3 Field Service Manual P 0730 A Figure 16 Removing the Coil Retainer Lift the lower shaft with lower camlock assembly out of the coil top Carefully pull the coil cable out from inside the shafts If necessary remove the coil pin for use with the replacement coil NOTE If there is any damage to the coil or coil cable the coil must be replaced There are no repairable parts on the coil To fit a new coil Ensure a skid plate is fitted to the coil If necessary connect a coil pin by Figure 17 inserting the coil pin into the top spirals of the coil cable positioning the coil pin so that the straight portion of cable is aligned with the channel in the coil pin pressing the coil pin onto the coil cable so that it is firmly held in position Figure 17 Inserting the Coil Pin Page 18 F3 Field Service Manual NOTE Once a coil pin is fitted to a coil cable it is not necessary to fit a coil plug retainer Connect the coil cable pull through to the coil plug Figure 18 mom eet P0733 A Figure 18 Coil Pull Through Connected to Coil NOTE If a coil pull through is not available a length of string can be used Prior to threading the cable through the shafts ensure the cable has 52 turns in the coil cable curly section Figure 19 52 TURNS
32. sassemble handle and remove dust and dirt difficult to move Armrest will not e loosen middle bolt move e disassemble armrest and clean e replace armrest Coil does not remain e replace friction blocks in place floppy shaft e replace lower shaft Water found inside e clean battery lid and apply silicone grease to battery lid O ring battery pack Camlocks will not e replace camlock pressure blocks collapsing close e replace swollen batteries if applicable oOo Page 42
33. ted as follows Turn on the detector with the black endcap fitted Conduct the test piece test and note the number of LEDs that light up and the tone and volume of the audio Increase the volume to maximum by pressing the button five times listening for the longer beep on the fifth press Recheck the detector with the test piece confirming an increased number of LEDs light up and the tone is louder 6 Decrease the sensitivity to normal by pressing the button five times listening for the double beep on the fifth press This indicates the detector sensitivity has returned to its default setting Page 10 F3 Field Service Manual Decrease the detector sensitivity to minimum by pressing the button five times listening for the longer beep on the fifth press Check the detector with the test piece and confirm there is no audio or LED indication to the test piece with detector set to its minimum sensitivity If the correct LED volume responses are not achieved refer to Section 4 for faultfinding procedures NOTE Regardless of minimum sensitivity at least one LED will remain illuminated provided an earset speaker off is not connected to the detector e Switch the F3 off and on this will revert the detector to default sensitivity Move the detector coil over a large metal target checking that the LEDs light up in the correct way Check that the LEDs can be extinguished by pressing and holding but
34. ton then quickly pressing and releasing the green ground balance button Once extinguished check the LEDs can be illuminated by pressing and holding the button and quickly pressing and releasing the green ground balance button If any fault is detected refer to Section 4 for faultfinding procedures L Test Piece Test This is a critical test and should be conducted last to confirm the detector is performing correctly and at an acceptable sensitivity level It should be conducted in an environment that is free from electrical interference and an earset must be connected The test is conducted as follows Ensure hands and arms are free of metallic objects watches rings etc and that no other metallic objects are near the coil Switch the detector on and confirm a steady threshold tone is present NOTE Maximum sensitivity is only available 30 seconds after the threshold tone is heard Do not test the detector with the test piece until 30 seconds after the threshold tone is heard Black Endcap Ensure the black endcap is securely fitted to the electronics pack Conduct the test as follows Hold the test piece above the middle of the coil with the rounded end containing metallic target away from the coil Move the test piece towards the centre of the coil until it lightly touches the coil then move it sideways off the coil Figure 8 Confirm a faint but clear response change in threshold tone volume and pitch is h
35. y missing items noted and replaced as necessary b To assist in identifying a faulty component it is useful to have serviceable line replaceable units on hand Subsequently by exchanging a suspect component with a serviceable assembly the fault can be confirmed and the faulty line replaceable unit identified NOTE At the completion of any servicing procedure ALL functional tests must be completed to confirm the detector is working correctly and no faults remain Page 5 F3 Field Service Manual 2 1 Mechanical Testing Confirm that all components are present in the hard case and unpack fully extend and insert batteries into the F3 as described in the F3 Operations Manual Figure 2 identifies the major components of the F3 During mechanical testing check the detector for any obvious signs of damage sensitivity endcap is correctly positioned and in good condition battery pack lid O ring is present clean and in good condition tether attaching the battery pack lid to the battery pack is present and in good condition coil can be tilted smoothly rotates and holds its position without drooping skid plate is firmly attached and in good condition shafts extend smoothly to their full extension and that the camlocks hold the coil and shafts in position earset dustcaps on detector earset socket and earset are in good condition armrest camlock and ensure the armrest slides smoothly armstrap is in good condition shafts can be colla
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