Carson Optical SA-500 manual Service, Problems, Parts

SA-500 Installation and Operating Instructions Page 7

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 internal fuse doesn't necessarily mean that the unit is bad. If a speaker or speaker lead is shorted the internal 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

Symptom	Possible Cause	Check
No power	Power switch not turned on	Does backlighting come on?
	Connector loose	Do you hear a "pop" when turned on?
	Internal fuse blown	Is an external fuse or circuit breaker used?
	Loose connection at power source	Are the negative leads connected to a good ground?
No siren tone -	High Voltage Protection	The input voltage must be less than 16 volts.
PA works	Mic button stuck	Does mic button release properly?
	Cutout activated	Does the siren work when Cutout input is disconnected?
	Cutout Polarity Option set wrong	Is the CUT P option properly configured?
No PA	PA volume not set properly	Have you tried turning the PA volume control?
	Selector in Radio position	PA is not available in the Radio position
Distorted siren	Speaker assembly loose	Is the speaker bell or tip loose?
sound	Intermittent Aux Input connection	Is the Aux Input used and wired properly?
	Low vehicle voltage	The input voltage must be greater than 9 volts.
Intermittent siren	High Voltage Protection	Is the vehicle voltage regulator working properly?
tone	Connector loose	Is the connector tight on the back of the unit?
	Bad power connection	Is there a loose connection on a power lead?
	Mic button activation	Is something lying on the microphone?
	Circuit breaker in supply connection	Is a circuit breaker used with at least a 50A rating?
Horn function	Horn switch stuck	Does the horn switch return fully when released?
or	Man/Phsr switch stuck	Does the Man/Phsr switch return fully when released?
Manual or Phaser	Aux Input improperly connected	Is the Aux Input used and wired properly?
stuck on	Aux Input Polarity Option set wrong	Is the AUX P option properly configured?
No Radio	Unit not connected to radio	Is the radio connected properly to the unit?
	Radio volume too low	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 jumper cut?
	Aux Input set to wrong function	Is the AUX I jumper configured properly?
Phaser not work-	Phaser disabled	Is the PHSR option jumper cut?
ing
Horn not working	Horn disabled	Is the trace cut that disables the Horn switch?

PARTS

The following parts are available from Carson Manufacturing Company, Inc.:

Part	Description
CP4680-1	Siren Cover
ED1558	Hardware Kit (Connector, bolts, microphone bracket with screws)
CP4688-10	Power Connector
CP3633	Microphone Bracket with Screws
CP3966	1/4-20 x 3/8" Hex Locking Bolt
ATO/ATC 20A	20 Amp Automotive Fuse
CP4750	Noise Canceling Microphone W/Connector
SR-15-1	Microphone Strain Relief
CP4119	TIP36C Power Transistor
CP4702	Selector Switch Knob
CP3571	Mounting Bracket
CP4836	Instruction Manual

CP4836A 9/14/01