Sonardyne 8270 - Removal of the Battery Pack; Removal of CPU Boards; End-Cap Connector Tightening Procedure

WSM6 Manual
Document Ref: UM-8270-000
Issue: A Rev 0
Section 6
40 October 2011
6.5.1 Removal of the battery pack
It may be necessary to remove the battery pack following fault diagnosis. After disassembling the
WSM6 proceed as follows:
1. The battery pack may be removed by undoing the screw into the battery pack release clamp
(at the connector end-cap end of the assembly).
2. Lever the retaining tab of the battery connector on the Rx/Tx PCB gently to one side and pull
the connector out.
3. To release the battery it may be necessary also to cut through the small fillet of silicon rubber
which helps to retain the battery pack in position.
6.5.2 Removal of CPU Boards
It may be necessary to remove a CPU board following fault diagnosis. Following disassembly of the
WSM6 and removal of the battery pack, proceed as follows:
1. The upper CPU board may be removed by unscrewing the two grey fixing screws holding the
upper board to the lower board and prising the board away from the two connectors.
2. The lower board may be removed by disconnecting the transducer and unscrewing the six
fixing screws holding the lower board to the chassis.
3. The 2 flying leads to the tuning coil must be de-soldered to finally remove the board.
6.5.3 End-cap connector tightening procedure
Use the following procedure to tighten the end-cap connector. To assist in this process the
following tools are recommended:
Torque wrench. (Suitable for applying 5 Nm - 3.7lbf-ft.)
22mm Socket. (with long internal clearance, more than 36mm)
17mm Open ended Spanner.
1. Dismantle the transponder as detailed in Section 6.5 - Dismantling
2.
Place the socket over the external part of the connector, the long internal clearance is
required to avoid damage to the pins. Make sure the socket is well seated on the hexagonal
part of the connector.
3. Place the open-ended spanner over the internal locking nut to prevent it from rotating.
4. If the connector wires have already started to become twisted, loosen the locknut slightly and
rotate the connector so as to untwist the wires. Tighten the locknut to moderate tightness
without rotating the connector. If connector wires are found to be damaged, replace
connector. Refer to Section 10 – Spares for parts list.
5.
Connect the torque wrench to the socket and tighten the socket to a torque setting of 5 Nm
(44.3 lbf-in. or 3.7 lbf-ft.)