Page 1
F3 Metal Mine Detector
Issue 1.4 4th February, 2005
Part No: 4904-0003
LEVEL 1 MAINTENANCE
FIELD SERVICE MANUAL
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F3 Field Service Manual – Level 1 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
may be reproduced by any process without written
permission from
Minelab Electronics
118 Hayward Avenue, Torrensville
South Australia.5031
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CONTENTS
SECTION PAGE
1. Introduction .....................................................................................................................4
1.1.
1.2.
2. Mechanical And Functional Testing Of The F3 ................................................................6
2.1.
2.2.
3. Disassembly And Reassembly Procedures ...................................................................12
3.1.
3.2.
3.3.
3.4.
3.5.
3.6.
3.7.
Levels Of Maintenance.............................................................................................4
How To Use This Manual .........................................................................................4
Level 1 Maintenance
Mechanical Testing...................................................................................................6
Functional Testing .................................................................................................... 7
Speaker Pod...........................................................................................................12
Handle.................................................................................................................... 15
Armrest...................................................................................................................18
Electronics Pack.....................................................................................................21
Coil .........................................................................................................................29
Shafts .....................................................................................................................34
Battery Pack ........................................................................................................... 44
4. Faultfinding Procedures ................................................................................................51
4.1.
4.2.
4.3.
4.4.
4.5.
4.6.
4.7.
Switch On Test Faultfinding....................................................................................51
Noise Cancel Faultfinding.......................................................................................51
Audio Reset Faultfinding......................................................................................... 51
Ground Balance Faultfinding ..................................................................................51
Test Piece Faultfinding ........................................................................................... 51
Alarm Tone Faultfinding ......................................................................................... 52
Earset Faultfinding..................................................................................................52
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F3 Field Service Manual – Level 1 Maintenance
1. INTRODUCTION
This manual is intended to instruct service technicians in functional
verification and Level 1 maintenance of the F3 mine detector. All sub-assemblies of
the F3 can be replaced without the need for adjustment or calibration. This service
manual includes all Level 1 maintenance procedures, including functional testing and
troubleshooting.
1.1. LEVELS OF MAINTENANCE
Levels of maintenance for the F3 comprise:
Level 1:
and most minor components of the F3 detector. This level of maintenance can be
conducted at demining field sites or local depots if required. Level 1 maintenance
includes full functional testing of the detector and does not require any specialized
facilities but does require the F3 Service Tool Kit.
Level 2: Level 2 maintenance encompasses Level 1 maintenance plus repairs
to the earset earphone and coil socket replacement. This level of maintenance
requires electronic workshop facilities and the F3 Service Tool Kit.
Level 1 maintenance includes replacement of all major components
Level 3: Level 3 maintenance encompasses Level 1 and Level 2 maintenance,
plus electronics pack PCB repair. Level 3 repairs are only conducted at Minelab’s
repair workshops located in Australia, Ireland and the USA.
1.2. HOW TO USE THIS MANUAL
Section 2 for comprehensive mechanical and functional testing of the F3. If any
mechanical component (eg armrest, coil) of the F3 requires replacement, Section 3
details Disassembly and Reassembly Procedures. If any faults are found during
functional testing, references to faultfinding procedures in Section 4 are included.
If doubt exists as to the mechanical integrity or performance of the F3, turn to
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F3 Field Service Manual – Level 1 Maintenance
LEVEL 1 MAINTENANCE
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F3 Field Service Manual – Level 1 Maintenance
2. MECHANICAL AND FUNCTIONAL TESTING OF THE F3
This section details mechanical and functional testing of the F3. Section 2.1
lists all mechanical testing and directs the user to applicable Level 1 repair
procedures if any defects are found. Section 2.2 lists functional testing of the F3
and will refer the user to the applicable faultfinding procedure if a fault is found. A
defective component is confirmed using the substitution method, so a complete and
fully serviceable F3 should be on hand (or a range of serviceable spare parts). After
any repair to the F3, Section 2.2 Functional Testing must be repeated in full to
ensure the F3 is fully serviceable before being returned to operational use.
2.1. MECHANICAL TESTING
Confirm that all components are present in the hard case. Unpack and fully
assemble the F3 (as described in Section 2.3 of the F3 Operations Manual). Fit
known good batteries, and fully extend the shafts. During assembly:
•
•
•
•
•
•
•
found during the above procedures, refer to the Section 3 disassembly and
reassembly procedures and follow these procedures to the point where the faulty
part can be replaced.
Ensure that the Sensitivity Endcap is correctly positioned and in good
condition. (Replace Endcap in accordance with Section 2.5 of the F3
Operations Manual.)
Ensure that the Battery Pack lid O-ring is present, clean and in good
condition. Ensure that the tether attaching the BP lid to the BP is present
and in good condition.
Ensure that the coil can be tilted smoothly and holds its position without
drooping. Ensure that it rotates smoothly to its three positions.
Ensure that the skid plate is firmly attached and in good condition.
Ensure that the shafts extend smoothly to their full extension and that the
camlocks hold the coil and shafts in position.
Ensure that the earset dustcaps (on detector earset socket and earset) are in
good condition. Do not plug the earset in at this stage.
Unlock the armrest camlock and ensure that the armrest slides smoothly from
the handle to the endcap. Ensure that the armstrap is in good condition.
Mechanical testing is now complete. To replace any worn or damaged parts
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F3 Field Service Manual – Level 1 Maintenance
2.2. FUNCTIONAL TESTING
This section details functional testing of the F3. It should be used to confirm
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 these tests to be
considered serviceable. References to faultfinding procedures in Section 4 are
included for repair as required. If a repair is completed, the full functional test
should be repeated from Section 2.2.1.
A Ground Balance (GB) Test Piece is required to properly test the F3. This
Note:
is needed to simulate mineralised or “noisy” ground and ensure correct F3
Ground Balance operation. The GB Test Piece can be a local piece of
mineralised ground (hot rock or a fired tile) that produces a response from the
F3.
2.2.1. Switch On Test
•
•
Hold the coil at least 600mm (24ins) from the ground and away from any
metallic objects and switch on the F3.
Ensure that four or five rising tones taking 12 to 15 seconds are heard. A
steady threshold tone should be heard a few seconds after the rising tones
finish.
Figure 1 Switch On Procedure
•
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 go to Section 4.1 for faultfinding
procedures.
2.2.2. Noise Cancel Test
•
Hold the coil stationary and at least 600mm (24ins) above the ground. Press
and immediately release the Noise Cancel button (black button located
behind the handle).
Note: The coil should not be moved during this procedure nor should metallic
objects be brought near the coil during this procedure.
Figure 2 Noise Cancel Procedure
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F3 Field Service Manual – Level 1 Maintenance
•
Noise Cancel will commence with two single beeps followed by 45 seconds of
sharp double beeps finishing with four single beeps.
•
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, go to Section 4.2
for faultfinding procedures.
2.2.3. Audio Reset Test
•
Hold the coil at least 600mm (24ins) off the ground and away from any
metallic objects.
Note: If the threshold seems to be at the correct volume, position the coil near a
piece of metal to conduct this procedure (If the coil is brought near a piece of
metal and the Audio reset Procedure is successfully completed, when the coil
is moved away from the piece of metal, another Audio Reset procedure will
need to be completed).
•
Press and immediately release the Ground Balance button (Green Button
located on top of the Handle (if the button is held too long, the detector will
begin to Ground Balance).
Figure 3 Audio Reset Procedure
•
•
Within two seconds the threshold tone will return to its correct level.
If the threshold tone does not return to the correct level, go to Section 4.3 for
faultfinding procedures.
2.2.4. Ground Balance Test
Note: Ensure the operator’s hands and arms are free of metallic objects (watches,
rings etc), and that no other metallic objects are near the coil.
a. If a Ground Balance Test Piece is being used:
•
Hold the ground balance button down for 3-4 seconds; this will reset the
detector internal ground balance setting.
•
Ensure that the coil is held stationary and away from any metal during this
procedure.
•
Move the Ground Balance Test Piece from approximately 150mm (6ins)
above the centre of the coil slowly towards the centre of the coil, a response
should be heard.
•
Press down and hold the green Ground Balance button whilst moving the
Ground Balance Test Piece from approximately 150mm (6ins) above the
centre of the coil slowly towards the centre of the coil (and touching the coil),
then out again approximately 150mm (6ins). Continue to move the Ground
Balance Test Piece slowly to and from the coil until the ‘Ground Balance OK’
tone is heard. (‘Ground Balance OK’ tone consists of a short high-pitched
double beep).
•
Release the Ground Balance button.
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F3 Field Service Manual – Level 1 Maintenance
•
Move the Ground Balance Test Piece from approximately 150mm (6ins)
above the centre of the coil slowly towards the centre of the coil, no response
should be heard.
•
If a response is still heard, repeat this procedure, if there is still a response,
go to Section 4.4 for faultfinding procedures.
b. If local ground is being used:
•
Ensure that this procedure is carried out on ground free of metal and hold the
coil about 150mm (6 ins) above the ground.
•
Press and hold the ground balance button down for 3-4 seconds, this will
reset the detector internal ground balance setting.
•
Slowly lower and raise the coil to the ground (touching the ground), a ground
response should be heard. If a response cannot be heard from the ground,
find an area of ground that produces a response when repeating the previous
step. If no ground can be found that produces a response from the detector,
a Ground Balance Test Piece must be used (Section 2.2.4.a).
•
Press down and hold the green Ground Balance button
and slowly lower the coil directly to the ground (touching the ground) then lift
the coil up again 150mm (6ins).
•
Continue to lower and raise the coil until the ‘Ground Balance OK’ tone is
heard. (‘Ground Balance OK’ tone consists of a short high-pitched double
beep).
Note: Movement of the coil during the entire Ground Balance procedure should be
slow, continuous and smooth and each down and up movement should take 3
to 4 seconds.
•
Release the Ground Balance button.
Figure 4 Ground Balance Procedure
•
Raise and lower the coil from the ground, no response from the ground
should be heard.
•
If the Ground Balance OK tone is not heard within 20 seconds of starting the
procedure, release the Ground Balance button and repeat this procedure.
•
If there is metal in the ground under the coil whilst Ground Balancing, the
detector will not ground balance correctly. Move the detector and repeat the
Ground Balance over ground that is free of any metallic objects.
•
If a response is still heard, repeat this procedure, if there is still a response
after repeating this procedure, go to Section 4.4 for faultfinding procedures.
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F3 Field Service Manual – Level 1 Maintenance
2.2.5. Test Piece Test
Note:
Ensure the operator’s hands and arms are free of metallic objects (watches,
rings etc), and that no other metallic objects are near the coil. 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.
a. Black Endcap.
•
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 (the Test Piece should be moved slowly
and smoothly during this procedure). A faint but clear response (change in
threshold tone volume and pitch) should be heard indicating that the
sensitivity of the detector is correct.
•
If the correct response is not heard, go to Section 4.5 for faultfinding
procedures.
•
Turn the detector off.
b. Red Endcap.
•
•
•
Remove the black endcap and fit the red endcap.
Turn the detector on, wait for the start up procedure to finish.
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 (the Test Piece should be moved slowly
and smoothly during this procedure). A clear response (change in threshold
tone volume and pitch) should be heard indicating that the sensitivity of the
detector is correct.
•
If the correct response is not heard, go to Section 4.5 for faultfinding
procedures.
2.2.6. Alarm Tone Test
•
Remove the red endcap (with the detector switched on). A continuous
cycling alarm tone should now be heard.
•
•
•
•
If the alarm tone is not heard go to Section 4.6 for faultfinding procedures.
Turn the detector off.
Remove the red endcap and fit the black endcap.
Turn the detector on and repeat the black endcap Test Piece procedure
(Section 2.2.5).
Figure 5 Test Piece Procedure
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2.2.7. Earset Test
•
Plug the earset into the detector as follows:
o
Undo the dustcaps from the Earset plug and Earset socket on the
detector. As shown in the following figure, gently hold the Earset plug
by the collar, and align the plug (raised dot on plug should be
uppermost) to the Earset socket before firmly sliding the collar onto
the socket.
F3 Field Service Manual – Level 1 Maintenance
Figure 6 Fitting the Earset
•
•
Ensure that the threshold tone is audible at the earphone.
If an earset ‘speaker on’ (4523-0027) is being tested, ensure that the
threshold tones can still be heard from the detector loudspeaker.
•
If an earset ‘speaker off’ (4523-0025), green tubing on earset cable near
plug) is being tested, ensure that the threshold tones cannot be heard from
the detector loudspeaker.
•
If a volume control is fitted to the earset cable, ensure that it operates
correctly.
•
If any faults are found, go to Section 4.6 for faultfinding procedures, or
replace the earset.
•
Turn the detector off.
2.2.8. Battery Cable Test (if supplied)
•
•
Remove the battery pack from the detector.
Connect the battery pack to the detector using the battery pack extension
cable.
•
•
Turn the detector on and repeat the Test Piece test.
If the detector fails to function properly with the battery cable connected,
replace the battery cable as it is not repairable.
•
Turn the detector off, disconnect the battery pack extension cable and refit
the battery pack.
Functional testing has now been completed.
Remove the batteries from the battery pack.
Pack the detector and all accessories into the hard case.
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F3 Field Service Manual – Level 1 Maintenance
3. DISASSEMBLY AND REASSEMBLY PROCEDURES
Minelab F3 Tool Kit (Minelab Part No 3004-0018) is required for these
procedures. The kit comprises:
Minelab Part No Description
0005-0006 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 250mm
8701-0012 M3 Hex T Driver
8701-0013 Flat blade screwdriver 6.5mm x 150mm
Note: Numbers in brackets on all figures refer to the item number from the
applicable figure.
3.1. Speaker Pod
3.1.1. Speaker Pod Disassembly:
•
Remove battery pack and sensitivity endcap from the detector.
3004-0017 SPKR/GB SW POD KIT SVC F3
1 SPEAKER POD – TOP HALF
2 SPEAKER POD – LOWER HALF
3 2701-0092 DECAL SPEAKER/HANDLE F3
4 4003-0083 SCREW M3X10 SS (not part of Kit)
5 4003-0084 SCREW NO 3X12 SS
•
Invert detector and lay speaker pod in sensitivity endcap to protect ground
balance/audio reset button (or use other means to protect ground
balance/audio reset button).
•
Remove 3 screws (5) on underside of speaker pod.
Figure 7 Speaker Pod Exploded View
Figure 8 Speaker Pod Parts List
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F3 Field Service Manual – Level 1 Maintenance
P0713
-A
•
Remove the top half of the speaker pod – lift the pod gently upward and
disconnect the speaker pod plug from the main wiring loom. Support the
main wiring loom socket against the lower half of the speaker pod when
disconnecting the speaker pod plug.
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 (4) 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).
Figure 9 Lower Speaker Pod showing screw securing Lower Speaker Pod to Handle
•
Remove the lower half of the speaker pod – lift the rear of the pod upwards
and remove the pod towards the front of the detector.
Note: The speaker pods halves should always be kept attached to each other
during storage and transportation to ensure that the loudspeaker and ground
balance/audio reset button seals are not damaged.
3.1.2. Speaker Pod Reassembly:
•
Ensure that the handle has been fully assembled (Section 3.2.2 Handle
Reassembly).
•
Peel back the shroud at the end of the speaker pod plug.
Figure 10 Peel back the shroud at the end of the Speaker Pod Plug
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F3 Field Service Manual – Level 1 Maintenance
P0716
-A
•
Refit the lower half of the speaker pod. The tongue at the front top of the
handle should be inserted into the recess in the lower half of the speaker pod.
Figure 11 Tongue at front top of Handle (red arrow), tongue recess (yellow arrow)
•
The main wiring loom plug should come through the larger rear hole of the
lower half of the speaker pod.
Figure 12 Correct position of Main Wiring Loom Plug (red arrow), screw securing
Pod to Handle (yellow arrow)
•
Note:
•
•
•
Refit the screw securing the pod to the handle.
Whilst refitting the speaker pod, care must be taken not to damage the seal
between the loudspeaker and ground balance/audio reset button to the pod
housing. Damaging this seal may allow water into either the loudspeaker or
switch.
If the plug and socket are dry, smear a small amount of silicon grease around
the shroud to ensure they will be waterproof. Plug the speaker pod plug into
the socket on the main wiring loom. Roll the speaker pod plug shroud back
over the socket. Push the upper half of the pod down towards the handle
until both halves of the pod are correctly mated. The plug/socket will go
down into the handle.
Invert the detector and lay speaker pod in a sensitivity endcap to protect
ground balance/audio reset button (or use other means to protect ground
balance/audio reset button). Refit the three screws which hold the pod
halves together.
Refit sensitivity endcap and battery pack.
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F3 Field Service Manual – Level 1 Maintenance
3.2. Handle
3.2.1. Handle Disassembly:
The noise cancel button and earset connector are an integral part of the main
Note:
wiring loom and this assembly is waterproof. Do not try to disassemble the
main wiring loom. It is not repairable.
•
Remove the speaker pod (Section 3.1.1 Speaker Pod Disassembly).
•
•
•
•
•
Note:
Figure 13 Handle Exploded View
8013-0001 HANDLE ASSEMBLY F3
1 4002-0039 NUT M4 HEX SS
2 3004-0016 RIGHT HANDLE HALF (part of HANDLE L+R KIT F3)
3 3004-0016 LEFT HANDLE HALF (part of HANDLE L+R KIT F3)
4 4002-0038 NUT STANDARD SS F3
5 4309-0037 DUSTCAP EARSET F3
6 8301-0031 SWITCH ASSY SLIDER F3
7 9511-0023 WIRING LOOM F3 SHAFT/HANDLE
8 4003-0082 BOLT M4X20 SKT SS
9 4003-0081 BOLT M4X10 SKT SS
Figure 14 Handle Parts List
Undo and remove the four bolts and nuts holding the handle halves together.
Carefully separate the left handle half from the upper shaft.
Remove the earset dustcap (5).
Remove the nut (4) that secures the lower speaker pod screw to the handle.
The main wiring loom (7) and on/off switch assy slider (6) can now be
removed from the right handle.
If the main wiring loom (7) needs to be replaced, carry out Section 3.4.1
Electronics Pack Removal. Then carefully pull the loom towards the front of
the detector until the loom comes out of the upper shaft. After replacing the
loom, refit the electronics pack (Section 3.4.4 Electronics Pack Refit) and
reassemble the Handle.
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F3 Field Service Manual – Level 1 Maintenance
3.2.2. Handle Reassembly:
•
•
Position the right handle half onto the upper shaft.
Locate the main wiring loom into the correct slots in the right handle half.
Starting from the main body of the main wiring loom, lay the cable into the
cable channels. Ensure that main wiring loom plug exits the top of the
handle in front of the upper screw boss (see figure below). Ensure that the
lower portion of the wiring loom cable sits under the rear handle screw boss.
There should be no excess cable at the bottom of the handle. Excess cable
should be carefully pulled through from the rear of the upper shaft.
•
Ensure that the on/off switch slider is correctly positioned.
Figure 15 Right Handle Half showing loom in cable channel (yellow, blue), on/off
switch slider (red), upper screw boss (orange), and cable under screw boss (green)
•
Place the nut (which secures the speaker pod assembly to the handle) into
the recess near the top of the handle. Care must be taken to ensure that
this nut stays in place during the following steps.
Figure 16 Handle Nut position
•
Fit the earset dustcap into the recess in the handle just forward of the earset
socket.
•
Carefully fit the left handle half to the right handle half and upper shaft.
Figure 17 Earset Dustcap position
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F3 Field Service Manual – Level 1 Maintenance
Hold the handle together tightly until the first two bolts have been fitted
Note:
otherwise the internal nut or main wiring loom may become dislodged. The
four bolts should initially only be done up loosely.
•
Fit one short (10mm) bolt and nut to the top position in the handle (this will
ensure that the internal nut stays in place).
•
Fit one long (20mm) bolt and nut to the rear of the handle (under the on/off
switch slider).
•
Fit one long (20mm) bolt and nut to the front of the handle (below the noise
cancel button).
•
Fit one short (10mm) bolt and nut to the remaining hole near the centre of the
handle.
•
•
Tighten the four bolts.
Place the earset dustcap over the earset socket.
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F3 Field Service Manual – Level 1 Maintenance
3.3. Armrest
3.3.1. Armrest Disassembly:
Figure 18 Armrest Exploded View
8013-0002 ARMREST ASSEMBLY F3
1 4002-0039 NUT M4 HEX SS
2 4003-0080 BOLT M4X30 SKT SS
3 4308-0003 CAMLEVER PIVOT PIN
4 3004-0015 LEFT ARMREST HALF (part of ARMREST L+R F3)
5 3004-0015 RIGHT ARMREST HALF (part of ARMREST L+R F3)
6 8008-0005 CAM LEVER F3
7 8008-0026 PRESSURE BLOCK ARMREST F3
8 8008-0030 WEAR PLATE F3
9 8005-0018 STRAP ARMREST F3
Figure 19 Armrest Parts List
•
•
Unlace the armstrap if required.
Undo and remove the three bolts and nuts holding the armrest halves
together. Carefully separate the armrest halves.
•
The cam lever, cam lever pivot pin and armrest pressure block can now be
removed.
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F3 Field Service Manual – Level 1 Maintenance
P0720
-A
Wear Plate
•
The wear plate can now be replaced if required. Glue the new wear plate
into the pressure block with a small drop of super-glue, allow the super-glue
to dry before reassembly.
Armrest
Pressure
Block
Figure 20 Glue the Wear Plate with a small drop of super-glue
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F3 Field Service Manual – Level 1 Maintenance
3.3.2. Armrest Reassembly:
•
•
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. (If the armrest is difficult to slide on the upper
shaft, the middle bolt may need to be loosened slightly.)
•
Refit the armstrap if required as follows (see figure below):
o With the buckle facing the correct way (rounded portion away from the
detector and up – see blue circle), feed the strap from the outside into
the slot in the right arm rest half (1).
o Feed the strap back over the top of the right arm rest half and back
through the lower slot in the buckle (same slot as the start of the strap)
(2).
o Feed the strap back through the slot in the right arm rest half (3).
o
Tighten the strap so that the buckle sits near the right armrest half.
o Feed the strap through the slot on the left arm rest half from the inside
(4).
o
Feed the strap across the top of the left armrest half (5) back through
the middle slot of the buckle (6).
o
Now feed the strap back through the top slot in the buckle so that the
end is now on the inside of the buckle (7).
Figure 21 Threading the Armstrap
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F3 Field Service Manual – Level 1 Maintenance
3.4. Electronics Pack
3.4.1. Electronics Pack Removal:
•
Remove battery pack and sensitivity endcap.
Figure 22 Electronics Pack Removal, Exploded View
1 8007-0023 UPPER SHAFT BLACK F3
2 9511-0023 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 3004-0001 ELECTRONICS PACK KIT SVC BLACK F3
7 4003-0078 SCREW M3X16 POSI SS
8 4309-0039 O-RING BULKHEAD 50MM
9 0703-0095 COVER BULKHEAD F3
10 4003-0084 SCREW NO 3X16 POSI SS
11 4003-0084 SCREW NO 3X16 POSI SS
12 4309-0044 GROMMET BULKHEAD F3
13 0703-0097 COVER RIBBON CABLE F3
Figure 23 Detector Parts List
•
This step only required if access to the split grommet is required: Undo and
remove the two screws (11) holding the ribbon cable cover (13) to the
bulkhead cover. Carefully pull back this cover and the split grommet (12)
along the main wiring loom cable.
•
Undo and remove the six screws (10) holding the bulkhead cover (9) to the
electronics pack rear panel. Pull and the bulkhead cover back along the main
wiring loom cable.
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F3 Field Service Manual – Level 1 Maintenance
Note:
•
Extreme care must be taken when unplugging the main wiring loom plug.
Carefully unplug the main wiring loom from the main PCB inside the
electronics pack.
Figure 24 Removing the Main Wiring Loom Plug (orange arrow)
•
Undo and remove the upper two screws (7) securing the electronics pack to
the upper shaft.
•
Slide the electronics pack back along the upper shaft approximately 10cms
(4ins).
Note: The coil plug retainer (4) is designed to aid in coil plug removal/refit. In
addition it stops the coil cable sliding down the shafts and stops the curled
coil cable from unravelling.
•
•
Disconnect the coil plug (5) (use the coil plug retainer to loosen the coil plug).
Remove the electronics pack from the upper shaft.
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F3 Field Service Manual – Level 1 Maintenance
3.4.2. Electronics Pack Disassembly:
Plug retaining nut
Figure 25 Electronics Pack Exploded View
3004-0001 ELECTRONICS PACK KIT SVC BLACK F3
1 4005-0045 WASHER BAYONET EP F3
2 8008-0027 LEVER BAYONET EP F3
3 4003-0078 SCREW M3X16 POSI SS
4 0703-0082 CAP FRONT EP F3
5 4309-0040 O-RING ENDCAP BP EP F3
6 0701-0029 COVER BLACK EP F3
7 SHIM (if fitted)
Figure 26 Electronics Pack Parts List
•
Using the 7/8” tubular socket spanner, remove the plug retaining nut at the
front of the electronics pack. The washer bayonet, lever bayonet and shim (if
fitted) can now be removed if required.
•
Remove 4 screws holding the cap front to the electronics pack housing.
Remove the cap front.
•
Remove 4 screws from the electronics pack rear panel. Slide the electronics
pack housing away from the bulkhead.
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F3 Field Service Manual – Level 1 Maintenance
3.4.3. Electronics Pack Reassembly:
Note: During reassembly, check condition of all O-rings and seals, if any are
cracked or otherwise damaged, replace them. If they are dry, smear a small
amount of silicon grease on them.
•
Ensure that an O-ring is fitted in the electronics pack rear panel where the
housing sits and that the main PCBs are sitting correctly in the detents in the
electronics pack rear panel.
•
Slide the housing over the PCB against the O-ring on the electronics pack
rear panel (F3 logo towards front of the detector). Refit the four screws
securing the housing to the electronics pack rear panel. Ensure that these
screws are done up evenly otherwise the O-ring in the electronics pack rear
panel may be damaged.
•
•
Ensure that an O-ring is fitted in the cap front and on the plug base.
Refit the cap front and four screws. Ensure that these screws are done up
evenly otherwise the O-ring in the rear of the front cap may be damaged.
•
Refit the shim (if removed), lever bayonet and washer bayonet over the plug.
Lever bayonet must be in the ‘closed’ position.
•
Refit the plug-retaining nut.
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F3 Field Service Manual – Level 1 Maintenance
3.4.4. Electronics Pack Refit:
•
•
Clean all silicon sealant from the coil socket thread and coil plug.
Slide the electronics pack on to the upper shaft until the coil socket is within
10cm (4ins) of the end of the upper shaft.
Figure 27 Electronics Pack Exploded View
•
Apply a small amount of silicon sealant to the coil socket (see picture below)
and reconnect the coil plug (5) to the electronics pack. Use the coil plug
retainer (4) to tighten the coil plug. Remove excess sealant.
Figure 28 Apply a small amount of silicon sealant to the coil plug thread
Note: The coil plug must be tightened to ensure that water does not enter the rear
of the electronics pack.
•
Slide the electronics pack all the way along the upper shaft. Ensure that the
main wiring loom cable lays in the cut out at the top rear of the electronics
pack rear cover.
•
Refit the two screws securing the electronics pack (7) to the upper shaft.
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F3 Field Service Manual – Level 1 Maintenance
Figure 29 Electronics Pack showing Main Wiring Loom in cut out (orange) and
Ribbon Cover (blue), Split grommet (red) and Bulkhead Cover (green) on Main
Wiring Loom
•
Ensure that the ribbon cable cover, split grommet and bulkhead cover are
threaded on the main wiring loom (in that order).
Note: Extreme care must be taken when plugging in the main wiring loom plug.
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F3 Field Service Manual – Level 1 Maintenance
•
Ensure that the keyway on the main wiring loom plug is towards the bottom of
the electronics pack then plug the main wiring loom into socket on the main
PCB inside the electronics pack.
Figure 30 Plug the Main Wiring Loom into the Electronics Pack (yellow arrow shows
O-ring under bulkhead cover)
•
Fold excess main wiring loom cable into the electronics pack above the plug.
Figure 31 Fold excess cable into the Electronics Pack
Note: If the O-ring or the split grommet is dry, smear a small amount of silicon
grease around them.
•
Ensure that an O-ring (8) is positioned correctly in the groove under the
bulkhead cover in the electronics pack rear panel (see yellow arrow in figure
above).
•
Refit the bulkhead cover with six screws.
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F3 Field Service Manual – Level 1 Maintenance
•
If required, slide the split grommet over the thickened section of the main
wiring loom cable and position the split grommet (over thickened section) into
the bulkhead cover.
Figure 32 Split grommet (red arrow) over thickened area of main wiring loom (yellow)
•
If required, fit the ribbon cable cover (13) over the grommet and secure with
two screws.
•
Route the Main Wiring Loom around the cable router on the side of the
bulkhead cover as per the following figure.
Figure 33 Main Wiring Loom around cable router
•
Refit sensitivity endcap and battery pack.
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F3 Field Service Manual – Level 1 Maintenance
3.5. Coil
3.5.1. Coil Removal:
•
•
Retract the shafts.
Remove Electronics pack (Section 3.4.1 Electronics Pack Removal – the coil
plug is disconnected during this procedure).
Figure 34 Coil Exploded View
3004-0003 COIL KIT SVC F3
1 2004-0037 RETAINER COIL BLACK F3
2 2021-0054 COIL F3
3 4005-0039 BLOCK FRICTION COIL F3
4 8009-0007 RETAINER PLUG F3
Figure 35 Coil Parts List
•
Remove coil plug retainer from around the coil plug. Ensure that excessive
force is not applied to the coil plug. The coil plug will now slide down into the
shafts.
Figure 36 Removing the Coil Plug Retainer
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F3 Field Service Manual – Level 1 Maintenance
•
Using the 6.5mm screwdriver, carefully lever the coil retainer cover (1) off the
coil top and remove it.
Figure 37 Removing the Coil Retainer
•
•
•
Note:
Remove the lower shaft with lower camlock assembly from the coil top.
Carefully pull the coil cable out from inside the shafts.
Carefully lever the skid plate off the coil using the 6.5mm screwdriver.
If there is any damage to the coil or coil cable, the coil must be replaced.
There are no repairable parts of the coil.
3.5.2. Coil Refit:
•
•
•
Refit the skid plate by pushing it onto the coil.
Ensure that the lower camlock assembly is completely reassembled.
Connect the coil cable puller to the coil plug.
Figure 38 Coil with Coil Puller attached (1)
Figure 39 Coil with Coil Puller attached (2)
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F3 Field Service Manual – Level 1 Maintenance
P0737
-A
•
Curl or loosen the cable as required to ensure that there are 52 turns (+/- 0)
in the coil cable curly section.
Figure 40 Ensure that the coil cable has exactly 52 turns
•
Slide the coil cable puller through the shafts starting from the lower end until
the lower camlock assembly is resting above the coil.
Figure 41 Coil with puller through the shafts
It is important that the curly cable or pull through is not twisted, as this will
Note:
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 flats on the friction
blocks should be facing down into the coil top.
Figure 42 Lower Camlock Assembly positioned into Coil Top
•
Open the lower camlock.
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F3 Field Service Manual – Level 1 Maintenance
•
Position the two tabs at the rear of the coil retainer cover into the cut-outs in
the rear of the coil top. Pivot the front of the coil retainer cover down
towards the coil top. Use the palm of the hand to snap the coil retainer cover
into the coil top.
Figure 43 Positioning Coil Retainer Cover
Figure 44 Snap the Coil Retainer Cover into the Coil top
Figure 45 Coil Retainer Cover in place
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F3 Field Service Manual – Level 1 Maintenance
•
Pull the coil plug clear of the shaft, fit the coil plug retainer and disconnect the
coil cable pull through.
Figure 46 Fitting the Coil Plug Retainer
•
Refit the electronics pack (Section 3.4.4 Electronics Pack Refit - the coil plug
is reconnected during this procedure).
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F3 Field Service Manual – Level 1 Maintenance
Lower Shaft
Upper Shaft
Middle Camlock Assembly
Upper Shaft
Upper Camlock Assembly
Lower Shaft
Middle Camlock Assembly
Middle Shaft
3.6. Shafts
Note: The following procedure details shaft disassembly/assembly and should be
followed in order until the component to be replaced is accessible.
Yoke and Lower
Camlock Assembly
Figure 47 Complete F3 Shaft Assembly
3.6.1. Shafts Disassembly:
•
a. Lower camlock and lower shaft
Remove the Electronics pack and Coil, (Section 3.4.1 Electronics Pack
Removal and Section 3.5.1 Coil Removal).
Figure 48 Lower Camlock Assembly Exploded View
3004-0011 CAMLOCK KIT LOWER SHAFT F3
1 8007-0022 CAMLOCK BODY LOWER F3
2 8008-0031 PRESSURE BLOCK LOWER F3
3 8008-0030 WEAR PLATE F3
4 8008-0029 CAM LEVER LOWER CAMLOCK F3
5 4308-0008 PIN LOWER CAMLOCK F3
Figure 49 Lower Camlock Assembly Parts List
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F3 Field Service Manual – Level 1 Maintenance
Wear Plate
•
Remove the friction blocks from either side of the lower camlock body.
Figure 50 Lower Camlock Body with Friction Blocks on and off
•
Use the 3mm T handle hex driver to push out the two lower camlock pins (5),
one secures the lower camlock body to the lower shaft and the other holds
the lower cam lever in place.
•
•
•
Remove the lower camlock body from the lower shaft.
Remove the lower pressure block from the lower camlock body if required.
The wear plate can now be replaced if required. Glue the new wear plate
into the pressure block with a small drop of super-glue, allow the super-glue
to dry before reassembly.
Lower
Pressure
Block
Figure 51 Glue the Wear Plate with a small drop of super-glue
•
Remove lower shaft by pushing it back through the upper/middle shaft.
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Middle Shaft
Upp
er Shaft
Wear Plate
b.
F3 Field Service Manual – Level 1 Maintenance
Middle camlock and shaft
Figure 52 Middle Camlock Assembly Exploded View
3004-0012 CAMLOCK KIT MIDDLE SHAFT F3
1 8008-0023 CAMLOCK BODY MIDDLE F3
2 8008-0005 CAM LEVER F3
3 8008-0030 WEAR PLATE F3
4 8008-0024 PRESSURE BLOCK MIDDLE CAMLOCK F3
5 4308-0003 CAM LEVER PIVOT PIN
Figure 53 Middle Camlock Assembly Parts List
•
Use the 3mm T handle hex driver to push out the cam lever pivot pin from the
middle camlock body. Remove the cam lever. Remove the pressure block
by pushing it out from inside the shaft.
•
The wear plate can now be replaced if required. Glue the new wear plate
into the pressure block with a small drop of super-glue, allow the super-glue
to dry before reassembly.
Middle
Pressure
Block
Figure 54 Glue the Wear Plate with a small drop of super-glue
•
•
•
Remove the middle camlock body from the middle shaft.
Remove the middle shaft by pushing it back through the upper shaft.
Remove the two collar shafts from the rear of the middle shaft if required.
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F3 Field Service Manual – Level 1 Maintenance
Wear Plate
c. Upper camlock
Figure 55 Upper Camlock Kit Exploded View
3004-0013 CAMLOCK KIT UPPER SHAFT F3
1 8008-0030 WEAR PLATE F3
2 8008-0005 CAM LEVER F3
3 8008-0022 PRESSURE BLOCK UPPER F3
4 4308-0003 CAMLEVER PIVOT PIN
5 8008-0021 CAMLOCK BODY UPPER F3
6 8007-0023 UPPER SHAFT BLACK F3 (not part of Camlock Kit)
Figure 56 Upper Camlock Kit Parts List
•
Use the 3mm T handle hex driver to push out the cam lever pivot pin from the
upper camlock. Remove the cam lever. Remove the upper pressure block
by pushing the block out from inside the shaft.
•
The wear plate can now be replaced if required. Glue the new wear plate
into the pressure block with a small drop of super-glue, allow the super-glue
to dry before reassembly.
Upper
Pressure
Block
Figure 57 Glue the Wear Plate with a small drop of super-glue
•
Remove the upper camlock body from the upper shaft.
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F3 Field Service Manual – Level 1 Maintenance
3.6.2. Shafts Reassembly:
a. Upper camlock
•
Refit the upper camlock body to the upper shaft, ensuring that that the
square hole in the camlock is aligned with the cut-out in the upper shaft.
Figure 58 Upper Camlock Body on Upper Shaft, square holes aligned
•
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. Refit the
cam lever and cam lever pivot pin. Ensure that the pressure block does not
protrude too far into the shaft, push it back into the camlock body if required
or difficulty may be encountered when fitting the middle shaft.
Figure 59 Reassembling the Upper Camlock Assembly
•
Open the upper cam lever.
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F3 Field Service Manual – Level 1 Maintenance
3
Upper Shaft
b. Middle camlock and shaft
Figure 60 Fitting the Middle Shaft
3004-0008 MIDDLE SHAFT KIT SVC BLACK F3
1 3004-0012 CAMLOCK KIT MIDDLE SHAFT F3
2 8007-0024 MIDDLE SHAFT BLACK F3
3 8003-0019 COLLAR SHAFT MIDDLE F3
(not shown – see next figure)
Figure 61 Middle Shaft Parts List
•
Attach the two collar shafts to the rear of the middle shaft. They should fit
snugly on the shaft and sit closely together.
Figure 62 Attaching Collar Shafts to Middle Shaft
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F3 Field Service Manual – Level 1 Maintenance
•
Slide the middle shaft into the rear of the upper shaft, square hole facing
down.
Upper Shaft
Middle Shaft
Figure 63 Middle Camlock Assembly Exploded View
3004-0012
1 8008-0023 CAMLOCK BODY MIDDLE F3
2 8008-0005 CAM LEVER F3
3 8008-0030 WEAR PLATE F3
4 8008-0024 PRESSURE BLOCK MIDDLE CAMLOCK F3
5 4308-0003 CAM LEVER PIVOT PIN
CAMLOCK KIT MIDDLE SHAFT F3
Figure 64 Middle Camlock Assembly Parts List
•
Refit the middle camlock body to the middle shaft, ensuring that that the
square hole in the camlock is aligned with the cut-out in the middle shaft.
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F3 Field Service Manual – Level 1 Maintenance
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. Ensure that the pressure block does not
protrude too far into the shaft, push it back into the camlock body if required
or difficulty may be encountered when fitting the lower shaft.
Figure 65 Reassembling the 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.
c. 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 66 Fitting the Lower Pressure Block into the Lower Camlock Body
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F3 Field Service Manual – Level 1 Maintenance
Upper Shaft
Lower Shaft
Middle Shaft
•
Slide the lower shaft through the upper/middle shafts, protruding section at
front of the lower shaft uppermost.
Insert Lower Shaft
this way
Figure 67 Inserting the Lower Shaft
•
Holding the detector and lower camlock assembly upside down (to prevent
the lower pressure block falling out) slide the lower camlock assembly fully
onto the lower shaft with a twisting motion.
Figure 68 Slide the lower Shaft into the Lower Camlock Body with a twisting motion
•
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 69 Lower Camlock Body and Lower Shaft complete
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F3 Field Service Manual – Level 1 Maintenance
•
Refit the friction blocks to the lower camlock body.
Figure 70 Refit the Friction Blocks
•
Refit the Coil and Electronics pack, (Section 3.5.2 Coil refit and Section 3.4.4
Electronics Pack Refit).
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F3 Field Service Manual – Level 1 Maintenance
3.7. Battery Pack
3.7.1. Battery Pack Disassembly
Figure 71 Battery Pack Exploded View
0311-0018 BATTERY PACK F3 BLACK
1 4003-0078 SCREW M3X16 POSI SS
2 0705-0016 PANEL ASSY CAP REAR BP F3
3 4309-0040 O-RING ENDCAP BP EP F3
4 0701-0030 HOUSING BP BLACK F3
5 0703-0126 BATTERY TUBE BP F3
6 0703-0079 CAP FRONT BP F3
7 3004-0005 RIVET (part of TETHER WITH RIVET KIT SVC BP F3)
8 0705-0015 PANEL ASSY LID BP F3 (BATTERY PACK LID)
9 0703-0098 FACEPLATE CAP FRONT BP F3
10 4003-0079 SCREW M3X25 POSI SS
Figure 72 Battery Pack Parts List
a. Faceplate, Front Cap, Battery Pack Lid and Tether
•
Undo the battery pack lid. Remove the 4 screws (10) from the faceplate (9).
Remove the faceplate. The front cap and battery pack lid can now be
removed (together) from the battery pack housing. (To replace the battery
pack housing or battery tube, go now to 3.7.1 b.)
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F3 Field Service Manual – Level 1 Maintenance
•
At the end of the tether is the rivet, which secures the tether inside the battery
pack. Push the pin of the rivet all the way through the rivet, and then remove
the rivet from the tether. The tether can now be pulled out through the front
cap and faceplate.
Figure 73 Push the pin out of the rivet (yellow arrow)
Figure 74 Battery Pack Lid and Tether Exploded View
0705-0015 PANEL ASSY LID BP F3 (BATTERY PACK LID)
1 4003-0073 SCREW NO 4X16 POSI SS
2 4005-0061 WASHER
3 5904-0085 PCB LID BP F3
4 3004-0005 TETHER (part of TETHER WITH RIVET KIT SVC BP F3)
5 4309-0047 O-RING 50MM BP LID F3
6 0304-0018 LID BP F3
7 4309-0038 O-RING 11MM BP LID F3
8 4313-0002 LOCK LID BP F3
9 3004-0005 RIVET (part of TETHER WITH RIVET KIT SVC BP F3)
Figure 75 Battery Pack Lid and Tether Parts List
•
•
The battery pack lid, faceplate or front cap can now be replaced if required.
Undo the screw on the PCB inside the battery pack lid. All parts of the
battery pack lid can now be removed.
Page 45
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b. Rear Cap
•
Remove the four screws from the rear cap and remove the rear cap from the
battery pack housing.
0705-0016 PANEL ASSY CAP REAR BP F3
1 0703-0078 CAP REAR BP F3
2 4002-0026 COLLAR BAYONET CAP BP F3
3 4003-0067 SCREW NO 4X3/8 POSI SS
4 5904-0052 PCB CAP BP F3
5 2302-0029 SKT 6 PIN BP F3
F3 Field Service Manual – Level 1 Maintenance
Socket Retaining Nut
(part of item 5).
Figure 76 Battery Pack Rear Lid Exploded View
Figure 77 Battery Pack Lid Parts List
•
•
The housing and battery tube can now be removed and replaced if required.
Using the 7/8” tubular socket spanner, remove the socket-retaining nut.
Remove the two screws from the PCB.
•
The PCB and collar bayonet can now be removed from the cap rear.
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F3 Field Service Manual – Level 1 Maintenance
3.7.2. Battery Pack Assembly
During assembly, check condition of all O-rings and seals, if any are cracked
Note:
or otherwise damaged, replace them. If they are dry, smear a small amount
of silicon grease on them.
a. Faceplate, Front Cap, Battery Pack Lid and Tether
Figure 78 Battery Pack Lid and Tether Exploded View
0705-0015 PANEL ASSY LID BP F3 (BATTERY PACK LID)
1 4003-0073 SCREW NO 4X16 POSI SS
2 4005-0061 WASHER
3 5904-0085 PCB LID BP F3
4 3004-0005 TETHER (part of TETHER WITH RIVET KIT SVC BP F3)
5 4309-0047 O-RING 50MM BP LID F3
6 0304-0018 LID BP F3
7 4309-0038 O-RING 11MM BP LID F3
8 4313-0002 LOCK LID BP F3
9 3004-0005 RIVET (part of TETHER WITH RIVET KIT SVC BP F3)
Figure 79 Battery Pack Lid and Tether Parts List
•
Assemble all parts to the battery pack lid assembly, ensure that the O-ring is
present in the lock lid, the lock lid pin is in the recess of the lid, there is an Oring around the lid.
Figure 80 Lock Lid pin goes into recess in Lid (red), Lock Lid O-ring (yellow), O-ring
•
Ensure that the tether is present, the PCB is correctly aligned and that there
is a nylon washer is fitted to the screw. Refit the screw into the battery pack
lid.
around Lid (green)
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F3 Field Service Manual – Level 1 Maintenance
Figure 81 Battery Pack Lid Tether Assembly, nylon washer (yellow arrow)
•
Slide the tether through the slot in the front of the front cap. Fit the rivet into
the hole at the end of the tether and push the pin fully into the rivet.
Figure 82 Tether through the Front Cap, Front Cap O-ring (yellow)
•
•
Ensure that the O-ring is present in the rear of the front cap.
Position the front cap onto the housing, ensure that the tether is between the
battery tube and housing.
Figure 83 Fitting the Rivet
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F3 Field Service Manual – Level 1 Maintenance
Figure 84 Ensure that the Tether is between the Battery Tube and Housing
•
Fit the faceplate (over the lid) to the front cap and insert the four screws.
Ensure that these screws are done up evenly otherwise the O-ring in the rear
of the front cap may be damaged.
b. Rear Cap
•
Ensure that an O-ring is present in the rear cap and on the plug base.
Figure 85 Rear Cap O-ring and Plug O-ring
•
•
Note:
Align and position PCB to the rear cap and refit the two screws to the PCB.
Position the collar bayonet to the rear cap
The recess in the collar bayonet must be positioned over the protruding lug in
the rear cap.
Figure 86 Position the recess in the collar bayonet over the protruding lug
•
Refit the socket-retaining nut.
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F3 Field Service Manual – Level 1 Maintenance
Figure 87 Fully Assembled Battery Pack Rear Cap
•
Fit the fully assembled rear cap onto the housing, ensure that the overcurrent sensor is between the battery tube and housing.
Figure 88 Ensure that the over-current sensor is between the battery tube and
housing (yellow arrow)
•
•
Refit the four screws.
Ensure that these screws are done up evenly otherwise the O-ring in the rear
of the cap may be damaged.
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F3 Field Service Manual – Level 1 Maintenance
4. FAULTFINDING PROCEDURES
Faultfinding is carried out using the substitution method, whereby known
good components are substituted to confirm a faulty component. So a complete
and serviceable F3, or a range of parts should always be on hand to conduct these
faultfinding procedures. When a faulty component is identified, replace it using the
Disassembly and Reassembly procedures at Section 3.
4.1 Switch On Test Faultfinding
•
•
•
4.2 Noise Cancel Faultfinding
•
•
If the detector makes no noise at all, with known good batteries, replace the
battery pack.
If there is still no sound, plug an earset into the detector, if there is sound
from the earset, the problem may be either the loudspeaker (part of speaker
pod assembly), main wiring loom or electronics pack. Replace these one at a
time until the faulty component is identified.
If there is no sound from the earset or from the detector, the problem may be
either the on/off switch actuator, main wiring loom or the electronics pack.
Replace these one at a time until the faulty component is identified.
If nothing happens when the noise cancel button is pressed or if the wrong
tones are heard, the problem may be either the main wiring loom (which
contains the noise cancel button) or the electronics pack.
Replace these one at a time until the faulty component is identified.
4.3 Audio Reset Faultfinding
•
•
Note: The audio reset/ground balance button and main wiring loom can be checked
If the detector does not audio reset correctly, the problem may be either the
audio reset/ground balance button (part of speaker pod assembly), main
wiring loom or electronics pack.
Replace these one at a time until the faulty component is identified.
by ground balancing the detector, if the detector ground balances correctly,
the audio reset/ground balance button and main wiring loom are OK.
4.4 Ground Balance Faultfinding
•
•
Note:
If the detector does not ground balance correctly, the problem may be either
the audio reset/ground balance button (part of speaker pod assembly), main
wiring loom, coil or electronics pack.
Replace these one at a time until the faulty component is identified.
The audio reset/ground balance button and main wiring loom can be checked
by conducting an audio reset procedure, if the detector audio resets correctly,
the audio reset/ground balance button and main wiring loom are OK.)
4.5 Test Piece Faultfinding
Note: The detector may not detect the test piece until 30 seconds after the detector
has been turned on, this is normal.
•
•
If the detector does not detect the test piece correctly, the problem may be
either the coil or electronics pack.
Replace these one at a time until the faulty component is identified.
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F3 Field Service Manual – Level 1 Maintenance
4.6 Alarm Tone Faultfinding
•
•
If the detector does not sound an alarm tone when the red endcap is fitted or
removed whilst the detector is switched on, the problem may be either the red
endcap or the electronics pack.
The red endcap should have a small cylindrical magnet in the bottom right
hand corner (looking into the endcap), if this is present the red endcap is OK
and the electronics pack is faulty.
4.7 Earset Faultfinding
•
For any faults, replace the earset.
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