Troubleshooting Guide.25 - Orion COBALT Series Installation Manual

TROUBLESHOOTING GUIDE
This seaion crovxte vou with a catalog of amplifier symptoms and their probable causes and solu¬
tions. Before : -'"■g, make sure the vehicle's electrical system is working properly by
verifying that otner eiectncar items (e.g. headlights, windows, etc.) still function correctly.
SYMPTOM
PI^OaABLE CAUSE SOLUTION
No Audio LOW or ho Remote
TunvOn connections
Check remote turn-on voltage at amp
and head unit
Blown Fuse Replace with new fast-blow fuse
Power wires not
connected
Check butt splices or solder joints;
check Ground and Battery connections
Biown Speaker or
noc connected
Use VOM or DVM to measure speaker
coil impedance; check speaker wiring
connections
Audio cycles
on and ofl
Thermal Protection
C'-.. ■-
c'operly
tf'-s-.. ' j • : iTier oH
flxh une it gets too hot
Check location for for adequate
ventilation; check speaker wiring for
a short to chassis
Distorted Audn trC'.: -eTsitivity
nc; i:'. properly
or damaged speaker
cones
See Calibrating Input Sensitivity
procedure and check each step; inspect
each speaker for damage and repair or
replace suspected component
Low tum-on voltage
Refer to head unit owner's manual
Audio levei loaf Mute circuit is on
Check electrical system for low voltage:
check ground connection
Audio Ud(s
Speakers wired with
wrong polarity,
causing cancellation ol
bass frequencies
Check polarity of wires from amplifiers
to each speaker as defined by the
system design
External
blowing
hcofrect wiring or
short circuit
Refer to Llettrical installation and check
each installation step
Whining ncMse on
audio with engine
running
Ampfirier is picking
up alternator noise
Install an in-line noise filter on the head
unit power wire; check alternator
diodes or voltage regulator for
proper operation
Ticking noise
on audio with
engine running
Amplifier is picking
up radiated spark
noise
Check RCA audio cables routes; install
an in-line noise filter on the head unit
power wire
25