Installation 
EST3 Installation and Service Manual  5.51 
Vrms or 65-75 Vrms). Turning the pot clockwise increases 
the gain while counter-clockwise decreases the gain. 
8.  Press the AUX_INPUT_ADJ switch a second time to restore 
the input. 
9.  Reconnect the coded tone output of the CDR-3 back through 
the duration relay. 
10.  Reconnect the field wiring to the remaining amplifier 
modules.