Rockford Fosgate PA2 Manual page 19

Symptom
Signal Present LED
not illuminating
Signal Strength/
Clipping LED not
illuminating
Engine Noise
• If noise persists, see your Authorized Rockford Fosgate Dealer
Diagnosis
Source unit has no output.
Front panel A/B input switch
not selected to correspond-
ing input.
Clipping LED trim potenti-
ometer not calibrated to
system's gain settings.
Noise is radiating into RCA
cable.
Bad component in the sig-
nal chain.
Multiple grounds in the au-
dio system.
– 15 –
Remedy
Check system with known work-
ing source and repair or replace
original source as needed.
Check switch position and ad-
just to corresponding input if
necessary. Refer to Installation
section for further information
Adjust LED potentiometer as
described in the Installation sec-
tion of this manual.
Check connections and run the
RCA cables on a different route
away from sources of high cur-
rent.
Check connections and bypass
additional components (cross-
overs and preamps) between
the source unit and the ampli-
fier. Connect one component at
a time using muting plugs (RCA
signal shorted to shield) at the
input of each added component
to determine the culprit. Repair
or replace components as nec-
essary.
Check ground connections and
connect amplifiers, signal pro-
cessors, and other components
to a central location or try a
different grounding point on the
chassis.
TROUBLE-S
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