WhitakerAudio J C Whitaker 20 W Stereo Audio Amplifier, Manual

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20 W Stereo Audio Amplifier
potentiometer. Note that there is a key tab at the base of the potentiometer. Using the
pliers, bend this tab down toward the face of the component so it is out of the way. Mount
R35 as follows. Mount R35 as follows. Place a lockwasher on the shaft and feed the
component through the chassis/front panel. Install a lockwasher and then a flat washer on
the shaft. Secure with the flat washer and nut provided. Do not tighten. The terminals of
the potentiometers should face downward toward the chassis bottom plate.
– Examine the 1/4-inch headphone jack. Note that one side is keyed at a 45-degree angle.
This edge denotes the common (ground) connection. The keyed edge should face toward
the bottom of the chassis. Mount the 1/4-inch headphone jack to the chassis/panel. Secure
using the nut provided. Do not tighten.
– Mount the power switch (SW51) to the front panel as follows. Unscrew the push-button
from the device. Remove the mounting nut from the shaft of the switch. Leave the fiber
washer and lockwasher in place. Mount the switch to the chassis/panel and secure using
the nut provided. Do not tighten. Note the connection terminals on the switch. The center
screw terminal should face toward the chassis bottom plate.
– Mount pilot lamp PL51 as follows. Thread the large mounting nut on the pilot lamp and
run down to the base of the threads. Place the lockwasher provided on the shaft. Mount the
pilot lamp to the chassis/panel and secure with the decorative nut provided. Run the
decorative nut down to be approximately flush with the mounting shaft. From the
underside of the chassis, spin the large mounting nut up toward the chassis and tighten.
– Using caution to not scratch the finish, tighten the front panel potentiometer mounting
nuts. Check to make sure the terminals of the potentiometers are facing downward toward
the chassis bottom plate. When tightening the nuts, do not use excessive force as this may
strip the threads and leave the component unusable.
– Using caution to not scratch the finish, tighten the headphone jack nut. It is often best to
tighten the jacks by holding the mounting nut steady and turning the body of the device
from the chassis side. This will reduce the possibility of scratching the font panel finish.
The keyed side of the 1/4-inch jack should face downward toward the bottom of the
chassis.