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PRR S-2 Turbine Operating Instructions
MD 21046-1532. A standard 9v alkaline battery can be substituted as a
temporary fix, but, since alkaline batteries can’t take a charge, it will
eventually wear down.
MANUALLY ADJUSTING THE PROTO-SOUND® VOLUME
Your Proto-Sound® system has two types of volume adjustment. A
manual turn knob on the bottom of the tender chassis (See Fig. 6 below)
allows you to control all the sounds in the system and a remote control
“RESET" option (Option # 6) allows you to control the volume level of the
engine chuff sounds remotely from the transformer. Turning the volume
adjustment knob one direction will increase the volume. Turning it the
opposite direction will lower the volume of all sounds: bell, whistle, and
enhanced neutral sounds. For information on operating the RESET volume
adjustment option, see the section entitled “Programming Proto-Sound®
RESET Options” on the following pages.
USING “RESET" TO PROGRAM PROTO-SOUND®
Proto-Sound® is equipped with several programmable features which are
accessed in the RESET state by moving the transformer throttle up and
down between full voltage and low voltage (8 volts) without shutting the
transformer off completely. Each time this is done you advance, one
feature at a time, through the available options. An air-release sound is
heard each time the throttle is advanced and returned. In addition, there are
special sounds to tell you what RESET position you are in.
Reverse Unit
Lockout Switch
Proto-Sound® Manual
Volume Adjustment Knob
Figure 6: Adjusting The Proto-Sound® Volume
