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Page 10 of 12 SA-400-17 Installation and Operating Instructions
08/06/08 CP5012A
SERVICE
This unit is designed to provide years of reliable service under even the worst conditions. Many
times there may appear to be a problem with the unit when the true problem is in the speaker(s)
or improper installation. The following chart shows typical symptoms and possible causes.
A blown rear panel fuse doesn't necessarily mean that the unit is bad. If a speaker or speaker
lead is shorted this fuse will blow before the unit is damaged. Disconnect the SPKR leads and
replace the fuse. If the siren emits a sound when in the Yelp position it is OK. Check the speaker
(s) or leads for possible shorting.
PROBLEMS
See www.carsonsirens.com for additional information.
or contact our Service Department at:
E-mail service@carsonsirens.com or Phone (888) 577-6877
Symptom Possible Cause Check
No power or siren
output
Power switch not turned on
Bad speaker(s)
Connector loose
Fuse blown
Loose connection at power source
Does backlighting come on?
Do you hear a "pop" when turned on?
With siren on, yelp selected, listen for tone in amplifier.
Is an external fuse or circuit breaker used?
Are the negative leads connected to a good ground?
No siren tone -
PA works
High Voltage Protection
Mic button stuck
Input voltage must be less than highest rated voltage.
Does mic button release properly?
No PA PA volume not set properly
Selector in Radio position
Have you tried turning the PA volume control?
PA is not available in the Radio position
Distorted siren
sound
Speaker assembly loose
Intermittent Aux Input connection
Low vehicle voltage
Is the speaker bell or tip loose?
Is the Aux Input used and wired properly?
Input voltage must be greater than lowest rated voltage.
Intermittent siren
tone
High Voltage Protection
Connector loose
Bad power connection
Mic button activation
Circuit breaker in supply connection
Is the vehicle voltage regulator working properly?
Is the connector tight on the back of the unit?
Is there a loose connection on a power lead?
Is something lying on the microphone?
Is a circuit breaker used with at least a 50A rating?
Horn function
Or Manual stuck
on
Siren switch stuck
Aux Input improperly connected
Does the Siren switch return fully when released?
Is the Aux Input used and wired properly?
Aux Input is activated with positive or negative.
No Radio Unit not connected to radio
Radio volume too low
Is the radio connected properly to the unit?
Can you here the radio in the vehicle?
Have you tried turning the RAD volume control?
Wrong siren tone Two-Tone option installed Is the T-T option switch turned on?