Loma IQ2 Service Manual page 90

RECEIVER INTERFACE BOARD
Located behind the removable end plate of your detector search head case is a
receiver interface board.
This board contains a user adjustable ferrite core that can be used to adjust the
balance signal when the detector is in its quiescent state.
Removing the screwed metal bung located on the removable end plate on the
search head case accesses the ferrite core. Instructions as to its use are in the
"Testing" section of this manual.
There are no user replaceable components located on this board. Should the
board develop a fault it will require replacing. Contact your local Group Service
Centre for help.
A simplified diagram showing the ferrite core position follows:
Module 8023
1 ORANGE
3 PINK
5 BLACK
7 WHITE
9 BLUE
11 YELLOW
Figure 10 Control Board Termination PL5
Accessed
through
end
plate
Figure 11 Receiver Balance Core
Maintenance
2 GREY
4 TURQUOISE
6 BROWN
8 RED
10 VIOLET
12 GREEN
6-20