Troubleshooting - ADS P450.2 Owner's Manual

troubleshooting

symptom
no output
audio cycles on and off
distorted output
23
possible cause
low or no remote turn-on
input
fuse blown
power wires not connected
audio input not connected
or no output from source
speaker wires not connected
speakers are blown
thermal protection engages
when amplifier heatsink
temperature exceeds 90° C
loose or poor audio input
amplifier level sensitivity set too
high; exceeding maximum
output capability of amplifier
impedance load to amplifier too
low
shorted speaker wires
speaker not connected to
amplifier properly
internal crossover not set
properly for speaker
action to take
check remote turn-on voltage
output at amplifier and correct
as needed
check power wire integrity
and reversed polarity, repair
as needed and replace fuse
check power wire and ground
connections and repair or
replace as needed
check input connections and
signal integrity, repair or
replace as needed
check speaker wires and repair
or replace as needed
check system with known
working speaker and repair or
replace speakers as needed
make sure there is proper
ventilation for amplifier and
improve ventilation as needed
check input connections and
repair or replace as needed
reset gain referring to the
tuning section of the manual
for detailed instructions
check speaker impedance load
if below 2 stereo or 4
mono rewire speakers to
achieve a higher impedance
check speaker wire
connections and repair or
replace as needed
check speaker wiring and
repair or replace as needed
refer to the installation section
of this manual for detailed
instructions
reset crossovers referring to the
multi-cross™ crossover
configuration section of this
manual