Paia 9308 Assembly And Using Manual page 15

( ) Install the knobs. Tighten the set screw slightly and rotate the
knob back and forth to see how well it's range of rotation
is balanced with the panel graphic. Reorient if not
satisfied and fully tighten the set screw when done (not
too tight.)
attaches to IC19.
( ) Attach the aluminum radiator fin to the tab of IC19 Using a
4-40 X 1/4" Machine Screw and #4 nut as shown in the
illustration.
Plug the wall-mount transformer into a 120-VAC outlet
and taggle the FatMan power switch to "ON." The LED to
the left of the switch should light and if it doesn't, you
should immediately unplug the unit from the wall and find
out why. The problem could be nothing more than a dead
wall outlet or bad wiring of the Power switch S4. Check
the orientation of all Integrated Circuits and polarity of
Capacitors (particulary C26, C27 and C30-C33 in the
power supply) and diodes (particulary D10 and D11).
Solder bridges on the circuit board may be the cause or a
poor solder connection almost anywhere.
When the POWER LED lights. Let the unit idle for a few
minutes while you check for parts that may be getting hot
(ICs in particular) or any unusual smell, smoke, sparks,
etc. Some parts WILL get hot during normal operation
and these are the 1W resistors that form R117 and the
voltage regulators (IC14, IC19 and {[C20). Some parts
will get warm over a period of 10-15 minutes, particularly
the uP and PROM (IC1 and IC3)