Page 10 of 12 SC-1002/1012-10 Installation Instructions
3/27/07 CP4997A
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 the 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 Wail mode selected it is
OK. Check the speaker or leads for possible shorting.
PROBLEMS
PARTS
The following parts are available from Carson Manufacturing Company, Inc.:
Part Description
CP4062-K2523 3/16” quick-connect terminal - AMP#2-520194-2 or equivalent (SC-1012 only)
ED1602 Hardware Kit (bolts, nuts, lockwashers)
CP3571 Bracket, mounting
CP4956-06 Connector, 6-pin Terminal Block Plug
CP4688-10 Connector, 10-pin Terminal Block Plug (SC-1012 only)
CP4990-150 Fuse, 15 Amp Mini Automotive (Siren)
CP4990-250 Fuse, 25 Amp Mini Automotive (Lite)
CP4748-2 Switch, Red Rocker ON - OFF - ON (Mech - Wail - Yelp)
CP4751-2 Switch, Momentary Red Rocker Switch, (ON) - OFF - (ON) (Phsr - Horn) (SC-1012 only)
CP4995-2 Switch, Red Rocker (ON) - OFF - ON (Man - Standby - Auto)
CP4993 Switch, Lighted Rocker for Light Control
CP4998 Transistor, output (replace in pairs, 2 required)
SC-1012-10CH SC-1012 Remote Panel Assembly (includes rocker switches)
CP4997 Instruction Manual
Symptom Possible Cause Check
No power or siren
output
No power to enable input
Bad speaker
Connector(s) loose
Rear panel fuse blown
Loose connection at power source
Does backlighting or POWER light (SC-1012) come on?
Is the OUTPUT light on face coming on in Wail?
Do you hear a "pop" when turned on?
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
Tones 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?