Related Manuals for Minelab F1A4
Summary of Contents for Minelab F1A4
- Page 1 FIELD SERVICE MANUAL F1A4 Metal Mine Detector NSN 6665-66-142-9741 LEVEL 1 MAINTENANCE LEVEL 2 MAINTENANCE Date: 1 June, 2005...
- Page 2 F1A4 Field Service Manual – Level 1 and Level 2 Maintenance Page 2...
- Page 3 F1A4 Field Service Manual – Level 1 and Level 2 Maintenance 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...
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Page 4: Table Of Contents
4.5 Noise Cancel test ....................19 4.6 Audio Reset Test....................19 4.7 Earset Test......................19 5. Troubleshooting and Repair of the F1A4 Control Box ............20 5.1 Troubleshooting the F1A4 Control Box..............20 5.2 F1A4 Control Box and Earset Repair Procedures ..........24 6. Reterminating the Coil Connector ..................33 7. -
Page 5: Introduction
INTRODUCTION This manual is intended to instruct service technicians in functional testing and Levels 1 and 2 maintenance of the F1A4 mine detector. All sub-assemblies of the F1A4 can be replaced without the need for adjustment or calibration. This service manual includes all Level 1 and Level 2 maintenance procedures, including functional testing and troubleshooting. -
Page 6: Level 1 Maintenance
F1A4 Field Service Manual – Level 1 and Level 2 Maintenance LEVEL 1 MAINTENANCE Page 6... -
Page 7: Mechanical And Functional Testing Of The F1A4
F1A4 should be on hand. After any repair to the F1A4, Section 2.2 Functional Testing, must be completed in full to ensure the F1A4 is returned for operational use. -
Page 8: Functional Testing
This section details functional testing of the F1A4. It should be used to confirm serviceability of an F1A4 before it is returned to the field for use and whenever doubt exists about the serviceability of an F1A4. The F1A4 must pass all these tests to be considered serviceable. - Page 9 The F1A4 should initially detect the GB Test Piece (a change of threshold tone will be heard) as the GB Test Piece is moved to and from the Coil. The F1A4 will then become “balanced” to it, i.e. the F1A4 threshold will remain stable as the GB Test Piece is moved to and from the Coil.
- Page 10 30 degrees side to side, listening for a change of threshold. If there is a noticeable threshold change (ie similar in volume to test piece threshold change), the Coil should be replaced (Section 3.4) or the F1A4 should be sent to an accredited F1A4 Level 2 maintenance workshop for repair.
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Page 11: Maintenance Procedures
CAMLOCK REPAIR PROCEDURES This procedure details the dismantling and re-assembly of the Camlocks fitted to the Upper Shaft of the F1A4. This is only necessary when a Camlock becomes damaged or worn. The F1A4 uses Camlocks in three locations – Upper Camlock locks the armrest into the Upper shaft, Lower Camlock locks the lower shaft into the Upper shaft and the Handle camlock locks the Handle onto the Upper shaft. - Page 12 F1A4 Field Service Manual – Level 1 and Level 2 Maintenance 3.1.1 Servicing the Upper and Lower Camlocks Knock out Camlock Pivot Pin with the 3 to 3.5mm punch. Remove Cam Lever from the Camlock Body. Remove Pressure Block from the Camlock Body.
- Page 13 F1A4 Field Service Manual – Level 1 and Level 2 Maintenance 3.1.2 Servicing the Handle Camlock Knock out Camlock Pivot Pin with the 3 to 3.5mm punch and Remove the Cam Lever. Remove the Stainless Steel Wear Plate, Assembly is the reverse of the dismantling procedure, with attention to the following: Use only new components from the Handle Camlock Service Kit.
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Page 14: Replacing The Handle Assembly
F1A4 Field Service Manual – Level 1 and Level 2 Maintenance REPLACING THE HANDLE ASSEMBLY Remove the Control Box, Lower Shaft and Armrest (if fitted) from the Upper Shaft. Remove the Upper Camlock as described in Section 3.1. Release the Camlock... -
Page 15: Replacing The Handgrip
F1A4 Field Service Manual – Level 1 and Level 2 Maintenance REPLACING THE HANDGRIP Remove the hand strap from the handle (refer to the ‘F1A4 Operations Manual if required). Cut the foam hand-grip down its length and remove it. Using water, wet the handle and the foam and slide the foam hand-grip onto the handle. -
Page 16: Level 2 Maintenance
F1A4 Field Service Manual – Level 1 and Level 2 Maintenance LEVEL 2 MAINTENANCE Page 16... -
Page 17: Testing The F1A4 Control Box
TESTING THE F1A4 CONTROL BOX This procedure details testing of the F1A4 Control Box and Earset, and should be carried out if there is any doubt about the serviceability of the F1A4, or after any repairs have been completed to the F1A4 Control Box. -
Page 18: Ground Balance Test
The F1A4 should initially detect the GB Test Piece (a change of threshold tone will be heard) as the GB Test Piece is moved to and from the Coil. The F1A4 will then become “balanced” to it, i.e. the F1A4 threshold will remain stable as the GB Test Piece is moved to and from the Coil. -
Page 19: Noise Cancel Test
If the correct tones are not heard, go to Section 5.1.4 AUDIO RESET TEST Momentarily press the AUDIO RESET button. The F1A4 should immediately BEEP. After 3 seconds the F1A4 should give five “high / low” beeps: BEEP BEEP BEEP... -
Page 20: Troubleshooting And Repair Of The F1A4 Control Box
Switch the F1A4 on to the Search position. The detector should take 6 seconds to run through the start up routine, comprising four rising tones, followed by a continuous background threshold tone. -
Page 21: Troubleshooting
The F1A4 should initially detect the GB Test Piece (a change of threshold tone will be heard) as the GB Test Piece is moved to and from the Coil. The F1A4 will then become “balanced” to it, i.e. the F1A4 threshold will remain stable as the GB Test Piece is moved to and from the Coil. - Page 22 GB Test Piece up and down, approximately 25 to 100mm from the Coil. The F1A4 should not respond to the test piece. If a response is heard check that there is no metal on the technician or the GB Test Piece and repeat the test.
- Page 23 F1A4 Field Service Manual – Level 1 and Level 2 Maintenance 5.1.5 Audio Reset Troubleshooting 5.1.5.1 Audio Reset Test Momentarily press the AUDIO RESET button. The F1A4 should immediately BEEP. After 3 seconds the F1A4 should give five “high / low” beeps: BEEP BEEP BEEP BEEP...
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Page 24: F1A4 Control Box And Earset Repair Procedures
Section 4 for a complete functional test of the F1A4 Control Box. 5.2.1 Loudspeaker Replacement Place F1A4 Control Box on an Anti-static mat, ensuring that the wrist strap is being worn and is firmly connected to the Anti-static mat. Remove the 6 screws from the front panel and pull the front panel away from the case. - Page 25 F1A4 Field Service Manual – Level 1 and Level 2 Maintenance Remove the Ground Lead retaining screw (if fitted). Rotate the Rear Panel so that it can follow the PCB through the Main Box. Page 25...
- Page 26 F1A4 Field Service Manual – Level 1 and Level 2 Maintenance Pull the Front Panel, PCB and Rear Panel out of the Main Box from the Front. Unplug the blue ribbon connector from the Front Panel. Desolder all the wires, at the PCB, from the coil plug, loudspeaker, switch and earset connector (note wiring/PCB connections).
- Page 27 F1A4 Field Service Manual – Level 1 and Level 2 Maintenance factory repair facility. Assembly is the reverse of the dismantling process, with attention to the following: Ensure that the PCB is correctly orientated before fitting into case. The coil connector and power connector will be nearest the black mounting block and the power connector at the end with the clips.
- Page 28 F1A4 Field Service Manual – Level 1 and Level 2 Maintenance 5.2.5 Front Panel Replacement Place F1A4 Control Box on an Anti-static mat, ensuring that the wrist strap is being worn and is firmly connected to the Anti-static mat. Remove the 6 screws from the Front Panel and pull the Front Panel away from the case.
- Page 29 F1A4 Field Service Manual – Level 1 and Level 2 Maintenance 5.2.6 Earset Repair Procedures 5.2.6.1 Four Pin plug repair Refer to the illustration at end of this section. Parts required: Minelab PN Description 2301-0013 one (if req’d) Four pin plug 9501-0024 1.5m (If req’d)
- Page 30 F1A4 Field Service Manual – Level 1 and Level 2 Maintenance water, contact cleaner or other water based lubricant, ensuring that no moisture gets on the soldered pins. Slide down the back shell over the toothed inner sleeve onto the plug and screw down all the way.
- Page 31 F1A4 Field Service Manual – Level 1 and Level 2 Maintenance Page 31...
- Page 32 5.3.2 Wire Links Note: Early F1A4 Battery Carriers have 4 wire links (or round rings) and later F1A4 Battery Carriers only have 2 wire links. Both types are fully interchangeable. Check the wire links connecting the battery terminal PCBs to the main PCB. If these are the round ring type, desolder them and replace with 20mm links made of 0.4 or 0.45mm insulated PUR (enamelled copper wire).
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Page 33: Reterminating The Coil Connector
Note: Do not use excess solder. Repeat the tinning process for the centre wire. Solder the pre-tinned wires into the connector using industry standard practices. Re-assemble the connector and test the coil with a known serviceable F1A4 Control Box. Page 33... -
Page 34: F1A4 Control Box Internal Connection Details
F1A4 Field Service Manual – Level 1 and Level 2 Maintenance F1A4 CONTROL BOX INTERNAL CONNECTION DETAILS PCB TO FRONT PANEL CONNECTIONS – LIST COIL SOCKET FRONT PANEL PIN A J2-A PIN B J2-B BLACK PIN B J2-C WHITE or YELLOW... -
Page 35: Plug/Socket/Component Wiring - Illustration
F1A4 Field Service Manual – Level 1 and Level 2 Maintenance PLUG/SOCKET COMPONENT WIRING - ILLUSTRATION Page 35... -
Page 36: Pcb Wiring - Illustration
F1A4 Field Service Manual – Level 1 and Level 2 Maintenance PCB WIRING - ILLUSTRATION Earset plug, Loudspeaker, Ribbon Cable and Switch to PCB connections BLACK BLACK YELLOW RIBBON (ON/SEARCH) (COMMON) BLUE CABLE BLUE (BALANCE) YELLOW EARSET PLUG LOUD ON/OFF/GROUND BALANCE...