Section 2 Detective+
6) Remove the Main PCB and its mounting chassis plate, exposing the
battery pack.
7) Remove the battery from the base of the unit and substitute it with
the replacement battery pack. Ensure that the Battery pack is located
within the rectangular retaining features of the lower case moulding.
8) Replace the PCB mounting chassis and fix to the lower case. Re-attach
the Earth connections to the Earth stud at the rear of the PCB
mounting chassis plate, and re-fit the cable connectors to their correct
positions on the Main PCB
9) Refit the cable lead from the top half of the case to the Main PCB and
carefully replace the top half of the case onto the lower half of the
case. Ensure that the integrity of the edge seal is maintained.
10) Replace the centre fixing bolt on top of the unit, replace and secure
the lamp cover.
Note: The user must comply with local environmental regulations when dispos-
ing of battery packs.
9.3 Replacing a Sensor Module
1) Remove the two security screws on top of the lamp cover on the top
side of the unit, and remove the lamp cover.
2) Remove the centre fixing bolt exposed when the lamp cover is
removed.
3) Carefully remove the top half of the unit enclosure, disconnecting the
attached cable at the Main PCB.
4) Remove the 5 pin molex JP3 labelled BATT connecting the battery to
the main board.
5) Identify the sensor module to be replaced and disconnect the flexible
pcb from it by lifting the shroud from the header and gently pulling on
the tail.
6) Remove the two Pozi-drive screws and the old sensor module.
7) Remove the old gasket/membrane assembly.
8) Fit the new components according to a reverse of the above, ensuring
that the shroud is pushed home over the header to grip the flexible
pcb tail securely. Replace the LED lead onto the main board connected
JP5.
9) Replace the battery lead onto the main board connector JP3.
10) Refit the cable lead from the top half of the case to the Main PCB and
carefully replace the top half of the case onto the lower half of the
Replacing a Sensor Module Detective+
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