GME MT400 Betriebsanleitung
TECHNICAL SERVICE
MANUAL
406MHz COSPAS-SARSAT Emergency Beacon,
MT400 Series EPIRB
Order Part Number: 310433
Drawing Number: 42772
Issue: 6
Status: Released
Date: 09-JUL-2018
Change History: 8235
17 Gibbon Road, Winston Hills NSW 2153, Australia
ABN: 93 000 346 814
gme.net.au
GME Pty Ltd
This document and the information contained
herein is the property of GME Pty Ltd. It may
not be copied, used or disclosed in whole or
in part except with prior permission of GME
Pty Ltd. It is supplied without liability for
errors or omissions.
2 TECHNICAL SERVICE MANUAL
APPLICABILITY
This document applies to the following models:
• MT400 [manually activated EPIRB, LiSO batteries]
• MT401 [manually & water activated EPIRB, LiSO batteries]
• MT403 [manually & water activated EPIRB, LiMnO batteries]
• MT403G [manually & water activated EPIRB + integral GPS, LiMnO batteries]
• MT401FF [float-free EPIRB, LiSO batteries]
• MT403FF [float-free EPIRB, LiMnO batteries]
• MT403FG [float-free EPIRB + integral GPS, LiMnO batteries]
SCOPE
Service Department level maintenance is outlined within this document. A suitable skill level is
assumed, as is access to common electronic and mechanical tools.
The scope of this document is limited to servicing and repair in any one or more of these cases:
• Inspection and performance check,
• Battery replacement, typically due to use or life expiry,
• Replacement of physical parts which may have been damaged or have deteriorated to a
point of no longer being serviceable,
• Exchange of a printed circuit card assembly that has failed in a manner not covered by the
product warranty (i.e. a non-electrical failure due to leakage or physical damage only).
NOTE:Repair of the printed circuit card assembly is not possible at the distributor level;
replacement of components is likely to affect module calibration. Specialist fixtures and facilities
only available at the factory are required to perform a module alignment after any repair
operation.
Additional servicing requirements may be imposed by other organisations and authorities on
particular users and installations (e.g. IMO/Circ. 1039). Such requirements are outside the scope
of this document and it is the responsibility of the agent carrying out the inspection and/or
service to determine which if any may apply. These requirements where applicable are always in
addition to, and do not replace, any of the requirements specified within this document.
ASSOCIATED DOCUMENTS
Reference to additional internal and external material may be required to complete some of the
operations detailed within this manual.
Furthermore, from time to time Technical Service Bulletins (TSBs) may also be released. These
bulletins contain information, which may be important to the continued service of specific
beacons, and the instructions contained therein must be followed.
It is possible to regularly verify the issue status and download as necessary new document
releases including TSBs via the support area on GME’s website. Always work with the latest
versions of this and other documentation.
GME’s home page web address is: www.gme.net.au
As information access is limited to approved organisations, distributors and dealers, you must
first apply for an account login. You can do this online from the SUPPORT page.
TECHNICAL SERVICE MANUAL 3
PRODUCT MAINTENANCE & SERVICE
4.1 INTRODUCTION
A number of service actions are identified within this manual, more than one may be applicable
at any beacon service. Please familiarise yourself with all available service actions to ensure that
a complete service is carried out.
Only manufacturer-authorised spares and components are approved for use in carrying out the
service operations contained here-in.
Access to a range of service tools is assumed. Particular specialised tools are listed in Table 6-5).
A dry, pressurised air source is required for leak testing.
4.1.1 MODEL VARIANTS
Please be aware the pictorial representations shown in a particular service operation step
may not always precisely depict all model variants or build revisions. In situations where this
detail discrepancy is important to the actions being described, it shall be addressed by a note,
alternate picture, or both.
4.2 BATTERY SERVICE KITS
These illustrations show the contents of the battery service kits.
The images show the batteries separate but the kits will be delivered with batteries fitted inside
the lower chassis.
For reasons of economy, the service kit is delivered with both coloured covers and both types of
switch slider track. Ensure that you use the one appropriate to your product.
4.2.1 MT400 SERIES BATTERY SERVICE KIT
These illustrations show the contents of the battery service kits.
The images show the batteries separate but the kits will be delivered with batteries fitted inside
the lower chassis.
For reasons of economy, the service kit is delivered with both coloured covers and both types of
switch slider track. Ensure that you use the one appropriate to your product.
Orange
activation
cover, MT401
slider track,
Slide switch,
MT400 slider
track, Yellow
activation
cover
Cap
4 screws for
securing the cap
to the chassis
Spring
Washer
Retention Nut
O-ring Seal
Antenna
O-ring Seal
Battery
Security seal,
Desiccant, Leak test
point screw (pan
head), Retention
screw (countersunk)
4 TECHNICAL SERVICE MANUAL
4.2.2 MT401 SERIES BATTERY SERVICE KIT
Part names are as for the MT400 series battery service kit, see above at Section 4.2.1.
4.2.3 MT403 SERIES BATTERY SERVICE KIT
Part names are as for the MT400 series battery service kit, see above at Section 4.2.1.
TECHNICAL SERVICE MANUAL 5
4.3 REPAIR MATRIX
The sequence of operations for each service type is given within Table 4-1. Multiple service types
may be combined provided the sequence of operations is maintained.
Para. Operation/ Nature of service Routine
inspection
Battery
Replace-
ment
External
Repair of
Fault
4.4.1 Inspection
4.4.2 External Switch Mechanism x x
4.4.3 Chassis Disassembly / Assembly,
including battery replacement xx
4.4.4 Cap Disassembly / Assembly x x x
4.4.5 Replacement of Desiccant Sachet xx
4.4.6 Leak Test
4.4.7 Security Seal Replacement
4.4.8 Reprogramming User Information xx
4.4.9 External Labelling Replacement /
Update
4.4.10 Produce Beacon Record
4.4.11 Transmission Test and Report
4.4.12 Packing for Return to Customer
KEY
This operation must be carried out
May be required depending on circumstances, refer to test criteria
xNot required.
4.4 SERVICING OPERATIONS
4.4.1 INSPECTION
This operation is carried out to determine whether the beacon has suffered from physical
or environmental abuse that will require rectification prior to its return into service. Correct
electrical operation of the EPIRB is assessed.
1. Carry out the inspections as outlined with the Emergency Beacon, Inspection Proforma
Drawing No. 42341.
2. Complete the form, noting all failures.
6 TECHNICAL SERVICE MANUAL
4.4.2 EXTERNAL SWITCH MECHANISM
This operation is carried out when:
• Access to the sealing screw is required.
• The switch mechanism or switch cover needs to be replaced.
Disassembly
For disassembly each step is to be completed in numerical order as follows:
1. Move the beacon activation switch to the ON position.
Note: IMMEDIATELY move on to and complete the next step.
2. Remove the screw and then the slider track completely from the beacon.
Assembly
To re-assemble and/or replace components each step is to be completed in numerical order as
follows:
1. Push the switch slider on to a slider track appropriate to the beacon model type.
MT400 type has
‘OFF’
Leave this hole
exposed when fitting
the switch slider
MT401type
has ‘READY’
2. Locate the switch and switch slider track so that the tongue provided on that track engages
into the slot provided at the front of the beacon cap. Place and then hold in position the
switch cover of the type appropriate to the beacon model type as shown.
WARNING: At this point, the switch is on. You must complete the next steps within 45 seconds
to avoid a live transmission.
Yellow switch covers are fitted to yellow
coloured beacons
Orange switch covers are fitted to orange
coloured beacons
TECHNICAL SERVICE MANUAL 7
3. Place and tighten the countersunk retention screw to a torque of 50 cN·m ± 5 cN·m.
4. Move the slider switch to the OFF or READY position.
WARNING: You must do this within 45 seconds to avoid a live transmission.
5. Close the switch cover.
4.4.3 CHASSIS DISASSEMBLY / ASSEMBLY, INCLUDING BATTERY REPLACEMENT
This operation is carried out in any of these cases:
• Internal access to the beacon is required
• A mechanical repair requires the EPIRB cap and chassis to be separated.
• The battery requires replacement
The EPIRB battery should be replaced when any of the following is evident or has occurred:
• The battery has reached (or exceeded) its expiry date or would otherwise reach its expiry in
the near term,
• The beacon has been activated or is suspected of having been activated, and/or
• The battery pack has failed or is considered suspect.
WARNING: Always use the correct battery service kit.
• MT400BAT is for use only with MT400
• MT401BAT is for use only with MT401
• MT403BAT is for use only with MT403
To carry out the replacement you will need the applicable battery service kit; these kits include
battery pack, cap, chassis, ballast and miscellaneous items. See 4.2, Battery service kits, starting
on page 6.
Disassembly
For disassembly, each step is to be completed in numerical order as follows:
1. Ensure that you are using an antistatic mat and wearing the wrist strap.
CAUTION: This equipment contains static-sensitive componentry. Handling precautions are
required and an antistatic wrist strap must be worn.
8 TECHNICAL SERVICE MANUAL
2. Using a PH1 Phillips screwdriver, remove all four screws that retain the EPIRB cap to the
lower chassis. Discard the screws .
3. Firmly grasp the cap with one hand (not by the antenna), and the lower chassis with the
other hand, and fully separate them. The fit is reasonably tight and it may sometimes be
necessary to rock the two components in respect to each other to initiate the separation
process.
In extreme cases, apply air pressure to the leak test point to separate the cap from the lower
chassis. (Refer to 4.4.6, Leak Test.)
For water activation models the water sensor interface on the circuit board may momentarily
touch the metallic paint on the lower chassis during withdrawal, causing a beacon self test
operation to occur. The unit “may “beep” for 4–5 seconds.
WARNING: (Water Activated Models): If the cap and lower chassis are left only partially
separated sensor interface contact with the lower chassis may cause the beacon to activate after
50 seconds.
4. Extract the O-ring seal from the groove around the cap and discard it.
5. Disconnect the battery’s fly lead from the printed circuit board (PCB) by first squeezing the
latch release lever on the connector, and then withdrawing the connector housing vertically
away from the printed circuit board.
Take care not to bend the connector pins.
6. Using a PH2 Phillips screwdriver, undo and remove the screws which retain the battery pack
in the base of the EPIRB.
TECHNICAL SERVICE MANUAL 9
7. Fully discharge the old battery pack and dispose of it in accordance with local regulations.
Assembly
Assembly consists of essentially the disassembly operations in reverse sequence. Each step is to
be completed in numerical order as follows:
1. Ensure that you are using an antistatic mat and wearing the wrist strap.
CAUTION: This equipment contains static-sensitive componentry. Handling precautions are
required and an antistatic wrist strap must be worn.
2. Verify the model type shown on the original chassis.
Only the first five (5) characters are significant for the purpose of determining which service
kit type is to be used (that is, MT400, MT401 or MT403).
3. Obtain the correct battery service kit. Refer to Table 6-3 for ordering details.
4. Inspect all components for damage and replace as necessary.
You must always replace the O-ring seal located in the groove around the cap with a new
one prior to assembly of the beacon.
5. Note down the expiry date (month and year) marked on the top face of the replacement
battery pack. You will need this later when marking the battery expiry on the exterior of the
beacon.
Note: Depending on model and or build date of the EPIRB this information is either ink
stamped directly on to the battery pack housing or provided as a sticker.
Battery
expiry date
ink stamping
Battery
expiry
date
sticker
10 TECHNICAL SERVICE MANUAL
6. Fully seat the new O-ring in the groove, ensuring it is fitted evenly with no twists. A blunt
instrument may be of assistance. Whichever tool is used ensure that it does not damage the
face of the O-ring seal.
7. Connect the battery’s fly lead to the PCB.
8. There is only one correct orientation which allows the cap and lower chassis to correctly
mate. Ensure that the guides provided around the lip of the lower chassis mate with the
corresponding ridges provided on the cap (two on one long side, one on the other).
9. When mating the cap and lower chassis together, ensure that the 2 tongues provided on the
lower edge of the printed circuit board (PCB) module engage centrally within the respective
guides provided on the top face of the battery pack. Failure to do so will result in the PCB
unacceptably flexing when the cap and lower chassis are assembled together. A PCB so
flexed must be considered unserviceable.
10. Tighten all 4 screws securing the cap to the chassis evenly before finally tightening each
screw to a torque of 100 cN·m ± 10 cN·m.
Single rib on
chassis
Double rib on
chassis
Andere Handbücher für MT400
1
Dieses Handbuch passt für folgende Modelle
7
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