509306
13
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Troubleshooting
Problem
Possible
Cause
Corrective
Action
Amplifier does not No power to +12V Check fuse(s)
turn on terminal
No power to REM Check head unit fuse(s) and
terminal wiring
Blown main fuse at
Replace fuse and identify
battery
cause
of
failure
Blown fuse at amplifier
Replace fuse and identify
cause
of
failure
Faulty ground Re-ground main power
ground to bare metal
chassis
Volume control too Input level control Re-adjust the input level
sensitive adjusted too high (refer to page 8)
Distorted sound Input level control Re-adjust the input level
adjusted too high (refer to page 8)
Blows fuse(s) at amp Power wires connected Reconnect power wires
backwards properly
Internal problem with Take unit for service
amp
Engine noise
I Ground loop(s) Use good quality shielded
Alternator whine RCA cables
Faulty ground at amp Re-ground amp to clean
bare metal chassis
Faulty ground at head Re-ground head unit to
unit clean bare metal chassis
Inductive coupling Re-route RCA and/or
speaker wires away from
factory harnesses
Input level on amp set Re-adjust input level (refer
too high to page 8)
Thermal protection
Amplifier driving 2 ohm
If the amplifier " thermals"
activated
load (4 ohms bridged) for frequently while driving
long durations
subwoofers, install fan to
keep amp cool.
11
POWER
1500.50
5-Channel
Amplifier
Short circuit Blown speakers Check all speakers
protection activated
Speaker wire(s) shorting Check for faulty wiring
to ground
Defective crossover
Faulty passive crossover
Low impedance Amp connected to Check speaker connections
protection activated improper load
Amp will not drive a 2 Verify that speakers are
ohm bridged load, 4 ohm connected properly
minimum
in
bridged
configuration
Speakers defective/ Check speakers
blown
Faulty passive Check crossovers
crossovers
Poor bass response Speakers out
of
phase
Check speaker polarity;
reverse the connection to
one speaker only if two
subwoofers are connected
to the amplifier.
NOTE:
If
the
protection
light
is
activated with
no
speakers connected
to
the amplifier,
and
all
the
power
connections are correct,
this
would
indicate an internal problem with the amplifier.
13


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