5
Adjustment
It is necessary to disassemble the console to adjust the gain controls. Disassembly of the console is
done by turning the thumbscrew on the back of the console that secures the top to the bottom.
Carefully open the console. For details on the location of the adjustments see Fig.1 on page 5.
The incoming and outgoing gain controls should be adjusted clockwise, at the same rate, until
feedback occurs, then counterclockwise until the feedback stops. This should complete the
adjustment. If the incoming level is not sufficiently high enough, the outgoing level will have to be
reduced to be able to get additional incoming volume level. The gain levels are a balance;
adjustment of each has an effect on the other. If the incoming volume is still low, check to see if the
speaker back-box is in place and that the leads have hot melt glue on them. If the incoming level is
too high, adjust it to a lower level. Reassemble the console.
When installing a Fabaflasher, unplug the CALL BUTTON extension, and insert the
WHITE/BLACK WIRE, from the Fabaflasher signal harness to PIN #1 and the BLACK WIRE,
from the Fabaflasher signal harness to PIN #4. (See FIG. 1 on page 5.)
NOTE: The incoming volume knob should be turned all the way clockwise for this procedure.
NOTE: There is a separate volume control in the handle of the handset for the handset
speaker volume.
