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TB0362A Page 11 of 14 05/28/10
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, controlled devices, or improper
installation. The following chart shows typical symptoms and possible causes.
A blown siren 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 speaker leads and replace the fuse. If the OUTPUT light comes on
with siren power on and Wail mode selected the amplifier is OK. Check the speaker or leads for possible shorting.
PROBLEMS
Symptom Possible Cause Check
No power or siren
output
No power to enable input (org wire)
Bad speaker
Connector(s) loose
Rear panel fuse blown
Loose connection at power source
Does backlighting or POWER light come on?
Is the OUTPUT light on face coming on in Wail?
Is an external fuse or circuit breaker used?
Are the negative leads connected to a good ground?
No siren tones Bad Speaker
High Voltage Protection
Is the OUTPUT light on face coming on in Wail?
Input voltage must be less than highest rated voltage.
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
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 a circuit breaker used with at least a 50A rating?
Horn function
stuck on or
Manual stuck on
Horn or Manual switch stuck
Aux Input improperly connected
Aux Input Polarity Option set wrong
Does the horn or manual switch return when released?
Is the Aux Input used and wired properly?
Is the AUX_P option properly configured?
Wrong siren tone Two-Tone option installed
Tone disabled.
Is the T-T option selected?
Check option switch settings.
Some siren tones
not working
Tone disabled Check option switch settings.
Light switches not
working
Loose output connections
Rear panel fuse blown
Do the Light Control switch indicators light?
Is the corresponding fuse blown?
RETURN
If you have any questions concerning this or any other Carson product, please contact our Technical Service
Department at (888) 577-6877. Many issues can be handled over the phone. We can also be reached via e-mail at
service@carson-mfg.com
If a product must be returned for any reason, please contact our Technical Service Department to obtain a Returned
Merchandise Authorization number (RMA#) before you ship the product to Carson. Please write the RMA# clearly on
the package near the mailing label. Be sure to provide a return address, contact and phone number, along with a brief
description of the problem.