HPK-100 Installation and Operating Instructions Page 7 of 8
CP5060A 02/04/10
SERVICE The complete system consists of the amplifier, speaker, and switch panel components along with
the wiring and electrical connections. A blown fuse on the amplifier does not necessarily
mean the amplifier is bad. If the system stops functioning or exhibits problems, first check that
the wire and electrical connections to each component are OK then check the following.
On the switch panel, check for power into (center terminal) and out of the switch. On the HORN
SELECT switch, check for power while pressing the horn ring. If there is not power into the
switch, check wire for bad connections and check fuses or breakers in the circuit. If there is
power into but not out of the switch, the switch itself may be bad.
While activating the amplifier (with horn ring), look for the output indicator to light up. If it
lights up the amplifier is OK. If not, check the fuse on the amplifier. If the fuse is OK then check
the POS and NEG power input leads for good supply and ground connections. If power into the
amplifier is OK then check that the voltage level at POS and NEG on the amplifier is less than the
rated voltage. If the voltage level is OK then the amplifier may be bad.
If the fuse on the amplifier is blown, disconnect the speaker leads at the amplifier and replace
the fuse. As before, activate the amplifier and look for the output indicator to light up. If the fuse
blows again then the amplifier may be bad.
If the output indicator on the amplifier lights up, disconnect the leads at the speaker and
check the speaker inputs with an ohm meter. If the reading is less than 1 ohm or reads as open
circuit then the speaker may be bad. If the ohm meter reading is OK then the wiring or connec-
tions between the amplifier and speaker may be faulty.
The following chart shows typical symptoms and possible causes.
PROBLEMS
PARTS and ACCESSORIES
The following parts and accessories are available from Carson Manufacturing Company, Inc.:
Part Description
CP5030 Cover, (not including chassis) (for amplifier)
CP4990-150 Fuse, 15 Amp Mini Automotive (for amplifier)
CP4993 Switch, Lighted Rocker (Lite switch on panel)
CP5044-2 Switch, Red Rocker ON - ON (Horn Select switch on panel)
CP4998 Transistor, output (2 required) (for amplifier)
Accessory Description * - standard accessory supplied with unit
ED1914 Cable, 4-P Lead Assembly 15FT (made w/ CP4688-04 Conn) (for amplifier)
CP4688-04 * Connector, 4-P Terminal Block Plug (for amplifier)
CP4051-XK-12 * Screw, Hex #8 Self Drilling (for mounting)
CP5060 * Manual, HPK-100 Instruction
ED1924 Cable, 6-P Lead Assembly 15FT (made w/ 3/16” Q.C. Terminals) (for switch panel)
CP4062-K2545 * Terminal, 3/16” Insulated Fem. Q.C. (for switch panel)
Symptom Possible Cause Check
No power or
output
Power not applied
Connector loose
Fuse blown
Loose connection at power source
High Voltage Protection
Bad speaker
Is the output indicator light coming on?
Is an external fuse or circuit breaker used?
Are the negative leads connected to a good ground?
Input voltage must be less than highest rated voltage.
Try another speaker.
Distorted sound Speaker assembly loose
Low vehicle voltage
Is the speaker bell or tip loose?
Input voltage must be greater than lowest rated voltage.
Intermittent 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 unit?
Is there a loose connection on a power lead?
Is a circuit breaker used with at least a 50A rating?