SA-380-10 Installation Instructions Page 7 of 8
CP4964A 07/29/05
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 or
improper installation. The following chart shows typical symptoms and possible causes.
A blown in-line fuse doesn't necessarily mean that the unit is bad. If a speaker or speaker lead is
shorted the in-line fuse will blow before the unit is damaged. Disconnect the SPKR leads and
replace the fuse. If the OUTPUT light comes on with siren power enabled and Yelp mode se-
lected it is OK. Check the speaker or leads for possible shorting.
PROBLEMS
PARTS
The following parts are available from Carson Manufacturing Company, Inc.:
Symptom Possible Cause Check
No power or siren
output
No power to orange Enable lead
Bad Speaker
Connections loose
In-line fuse blown
Loose connection at power source
Does backlighting come on?
Is the OUTPUT light on front panel coming on in Yelp?
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
All siren tones disabled
Input voltage must be less than highest rated voltage.
Does mic button release properly?
Check option switch settings.
No PA PA volume not set properly. Have you tried 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 Auxiliary input used and wired properly?
Input voltage must be greater than lowest rated voltage.
Intermittent siren
tone
High Voltage Protection
Connection loose
Bad power connection
Mic button activation
Circuit breaker in supply connection
Is the vehicle voltage regulator working properly?
Are the connections 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
stuck on or
Manual stuck on
Siren button stuck
Aux input improperly connected
Aux input polarity set wrong
Does the siren button return fully when released?
Is the auxiliary input used and wired properly?
Is the auxiliary polarity option set properly?
Wrong siren tone Two-Tone option selected
Aux function option set wrong
Check option switch settings?
Some siren tones
not working
Particular siren tones disabled Check option switch settings?
Part Description
CP3571 Bracket, Mounting
ATO/ATC 15A Fuse, 15 Amp Automotive
CP4852 Knob, selector switch
CP4750 Microphone, Noise Canceling w/Connector
CP3633 Microphone Bracket with mounting screws
SR-15-1 Microphone Strain Relief
CP4119 Transistor, output (2 required) (Industry standard TIP36C, Not Texas Instruments)
ED1602 Hardware Kit (bolts, nuts, lockwashers)
CP4964 Instruction Manual
To Next Page
Loading...
