Carson SA-441-83FX 用户手册

 

TB0335B 

Page 8 of 10 

10/18/03 

 
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 panel fuse(s) 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. 
 
 
Note:  Older versions of this amplifier unit used one 20AMP fuse to supply both internal amplifiers.  This means that if 
one internal amplifier output is shorted and blows the fuse, the other internal amplifier will also lose power even though 
it may be fine.  Be sure to check both amplifier unit outputs for shorted wiring or speaker. 
 
 
PROBLEMS 

No Power or siren output  Power switch not turned on 

Bad Speaker 
Connector or connections loose 
Panel fuse(s) 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 power leads connected to a good buss? 

No siren tone – 
PA works 

High Voltage Protection 
Mic Button stuck 

The input voltage must be less than highest rating. 
Does Mic Button release properly? 

No PA 

PA volume not set properly 

Try turning the PA volume control. 

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? 
The input voltage must be greater than lowest rating. 

Intermittent siren tone 

High Voltage Protection 
Connector loose 
Loose connection at power source 
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? 
Check for loose leads back to power source. 
Is something lying on the microphone? 
Is a circuit breaker used with at least 50A rating? 

Horn or manual stuck on  Siren switch stuck 

Aux Input improperly connected 

Does the Siren pushbutton switch return fully when 
released? 
Is the Aux Input used and wired properly? 

No Radio 

Unit not connected to a radio 
Radio volume too low 

Is the radio connected properly to the unit? 
Can you hear the radio in the vehicle? 
Try adjusting the internal radio volume control. 

Wrong siren tone 

Ground system noise 

Are control head and amplifier connected to good 
ground? 

Dual mode switch does 
not work 

Only one internal amplifier works 
One speaker damaged 

Is one fuse on the amplifier blown? 
Try replacing the speaker. 

 
 
 
 

 
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@carsonsirens.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.