F3 COMPACT Service Manual
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54
b.
Open the detector body and remove the main PCB as described in Section
3.3.1 -
Removing the Main PCB
. Once completed:
•
Identify the six way ribbon cable from the control switches to the interface PCB.
•
Open the locking bail of the connector on the interface PCB, disconnect the six way
ribbon cable.
•
Lay the detector body on its side with the control knobs facing upwards. Set the controls
to off and setting 4.
•
Using a 2mm hex key driver, undo the screws in the centre of each control knob and
remove the screw, bush, spring and knob from the switches.
•
Take note of the orientation of the switches and the ribbon cable and use a 10mm
spanner to remove the nut and locking washer from both switches.
c.
The control switches can now be removed and replaced.
Note
Use care handling the control switches and the flexible ribbon cable. These are internal
components and will be easily damaged if they are forced or misaligned.
Figure 92: Disconnecting Six Way Ribbon Cable
Figure 93: Removing Control Switch Knobs
