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 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
Symptom | Possible Cause | Check |
No Power or siren output | Power switch not turned on | Does backlighting come on? |
| Bad Speaker | Do you hear a “pop” when turned on? |
| Connector or connections loose | With siren on, yelp selected, listen for tone in |
| Panel fuse(s) blown | amplifier. |
| Loose connection at power source | Is an external fuse or circuit breaker used? |
|
| Are the power leads connected to a good buss? |
No siren tone – | High Voltage Protection | The input voltage must be less than highest rating. |
PA works | Mic Button stuck | Does Mic Button release properly? |
No PA | PA volume not set properly | Try turning the PA volume control. |
Distorted siren sound | Speaker assembly loose | Is the speaker bell or tip loose? |
| Intermittent Aux Input connection | Is the Aux Input used and wired properly? |
| Low Vehicle voltage | The input voltage must be greater than lowest rating. |
Intermittent siren tone | High Voltage Protection | Is the vehicle voltage regulator working properly? |
| Connector loose | Is the connector tight on the back of the unit? |
| Loose connection at power source | Check for loose leads back to power source. |
| Mic Button activation | Is something lying on the microphone? |
| Circuit breaker in supply | Is a circuit breaker used with at least 50A rating? |
| connection |
|
Horn or manual stuck on | Siren switch stuck | Does the Siren pushbutton switch return fully when |
| Aux Input improperly connected | released? |
|
| Is the Aux Input used and wired properly? |
No Radio | Unit not connected to a radio | Is the radio connected properly to the unit? |
| Radio volume too low | 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 | Only one internal amplifier works | Is one fuse on the amplifier blown? |
not work | One speaker damaged | Try replacing the speaker. |
RETURN
If you have any questions concerning this or any other Carson product, please contact our Technical Service Department at (888)
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.
TB0335B | Page 8 of 10 | 10/18/03 |
