Specifications

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Engine Noise
Source unit is not ground-
ed properly
Check connections and repair wiring
as necessary
Noise is radiating into
RCA signal cable
Check connections, run the RCA
cables on a different route away from
sources of high current
Bad component in the
signal chain
Check connections. Bypass all compo-
nents between the Source unit and the
amplifier. Connect one component at a
time to determine the culprit. Repair or
replace components as necessary
Noise is radiating into the
speaker cables
Disconnect speakers and connect a
test speaker to the output terminals or
the source unit. If noise is gone,
reroute the speaker cables away from
sources of high current
Multiple grounds in the
audio system
Check ground connections and
connect amplifiers, signal proces-
sors, and other components to a
central location or try a different
grounding point on the chassis
S YMPTOM D IAGNOSIS R EMEDY
CD skips
excessively
Source unit mounted at
an incorrect angle
Check mounting angle of source unit
(mount within ±20˚ from horizontal)
and repair as necessary
Source unit not secured
properly (Standard
Mount)
Check tightness of installation sleeve
and back strap; repair or replace as
necessary
Source unit not secured
properly (ISO Mount)
Check tightness of mounting screws
and repair or replace as necessary
Radiated Noises
No RF suppression
of blower motors
Connect filter cap (Radio Shack #272-
1085) in-line on B+ as close to blower
motor as possible
No RF suppression
of switches
Connect a .1µf – .01µf non-polarized
capacitor across switch contacts