Banner DF-G1-PR-Q7 Instrucciones de operaciones Pagina 161

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350 Cable Survey System
DPN 402197 © TSS (International) Ltd Page 10 of 26
A 2.5mm hexagonal key
Remove the ‘Power/Comms’ end-cap:
1. Use the 3mm hexagonal key to release and remove the four M4 × 12mm A4 stain-
less-steel screws that secure the end-cap to the housing.
2. Use the 2.5mm hexagonal key to remove the two button head screws from their
threaded holes near the edge of the end-cap.
3. Insert two of the M4 × 12mm screws into the holes vacated by the button head
screws and tighten them by hand until you feel resistance.
4. Use the 3mm hexagonal key to tighten the two M4 × 12mm screws alternately so
that they lift the end-cap away from the SEP housing.
5. After you have screwed the two jacking screws home, use your fingers to ease the
end-cap away from the SEP housing. Note that a partial vacuum may form inside
the housing and this may make it difficult to remove the end-cap. Do not insert
any hard or sharp instruments into the gap to act as a lever because this
may scratch the surface, following which corrosion will occur.
6. Remove the two jacking screws from the end-cap.
7. Do not allow strain to develop on the internal connectors as you ease the end-cap
away from the SEP housing. Disconnect the 8-way and the 6-way internal connec-
tors by pressing their two side-clips together and pulling the plugs and sockets
apart.
8. Disconnect the ground strap by pulling the spade connector and receptacle apart.
Remove the coil connector end-cap:
9. Remove the four M4 × 12mm A4 stainless-steel screws as before. Substitute two
of these screws in place of the two button head screws to jack the end-cap away
from the SEP housing. Remove the jacking screws from the end-cap.
10.Remove the end-cap carefully – note that it carries all the circuit board assem-
blies. Handle this assembly with care. Pull the end-cap carefully until the entire
assembly is free of the SEP housing and place it on the clean anti-static work sur-
face. Save the pack of desiccant that is wedged underneath the circuit-board
assembly and store it in a warm dry place while you work on the circuitry.
11.The Processor Board is located on one side of the central support block, and the
ADC and the Power Supply boards are located together on the other side.
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